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Why does the See Also section of this article link to the French Wikipedia article for La Station d'écologie de Lamto? So far as I can tell, that article does not have anything to do with earthworms? TheMrP ( talk) 23:05, 5 February 2018 (UTC)
Earthworms are amazing creatures that play a vital role in soil ecosystems. They feed on organic matter in the soil and excrete it as castings, which are rich in nutrients and beneficial microorganisms. Earthworm excretion helps improve the soil structure, fertility, and water-holding capacity. It also reduces soil compaction and erosion, and enhances plant growth and health. — Preceding unsigned comment added by 2604:3D08:BD80:CF00:495:469A:4DF:2A77 ( talk) 21:37, 2 November 2023 (UTC)
Earthworm expert Cody Lundeen says earthworms have the nutritional content of two eggs.. Reports a reliable source — Preceding unsigned comment added by Raceingearthworms ( talk • contribs) 02:28, 13 April 2013 (UTC)
Could someone include the protein content/nutritional value of the common earthworm? They're delicious creatures, and very pleasant to eat for those with poor digestion.
Keep in mind the "Threats to Earthworms" Section. While they might be pretty yummy (Not that I would know) it's probably pretty dangerous to try to eat them because of all the chemicals in the ground that they consume.
Oh yes, I'm sure their delectable. —Preceding unsigned comment added by Zone156 ( talk • contribs) 23:51, 18 October 2007 (UTC)
[it's probably pretty dangerous to try to eat them because of all the chemicals in the ground that they consume] you could just cook it —Preceding unsigned comment added by 216.162.81.161 ( talk) 16:48, 4 May 2009 (UTC)
I would like to see nutritional information for earthworms. Percent protein, fat, etc, but particularly the amounts of vitamins and minerals. —Preceding unsigned comment added by 24.56.247.187 ( talk) 10:17, 6 May 2010 (UTC)
Cooking is good for killing microbes that can't take the heat, but I don't think it's going to do much to get rid of poison. -- 98.232.209.203 ( talk) 08:47, 27 June 2012 (UTC)
"Various species of earthworms are used in vermiculture, the practice of feeding organic waste to earthworms to decompose (digest) it, a form of composting by the use of worms. These are usually ''Eisenia Fetida'' or the Brandling worm, also known as the Tiger worm or Red Wriggler."
Eisenia Fetida doesn't actually live freely in the soil but in compost so arn't really earthwormsm, but I'll leave the article as it is for now... quercus robur
Soliciting opinions: Should there be entries for some of the more interesting species/varieties (e.g. Red Wrigglers)? FZ 01:25, 18 Jun 2004 (UTC)
Oligochaeta (which is either a class or subclass depending on the author)
Except that the taxobox lists oligochaeta as an order. I'm not knowledgable enough to correct this myself, but consistency within the oage would be nice. Rho 23:02, 16 Sep 2004 (UTC)
This page in my User namespace has some information about earthworms that can be added here, if anyone so desires: User:Stellertony/Notepad/Earthworm Stellertony the Bookcrosser 06:52, 17 May 2005 (UTC)
I have heard that earthworms have powerful regenerative abilities, being able to regrow if cut in half. I have even heard that if cut in half, an earthworm can regenerate into two new individuals. Is this true? Please add info to the article. SpectrumDT 22:26, 4 November 2005 (UTC)
G.E. Gates spent several years determining the regenerative abilities of earthworms. Because the incision levels from anterior or posterior overlap in several species then, in theory at least, it is possible to get two worms from one "individual". Head regererates are farily common in some Lumbricidae, and I have seen them in Pontoscolex corethrurus (Glossoscolecidae). One of the most adept regenerators is Perionyx excavatus (Megascolecidae). Hope this helps the discussion. Rob B.
This is great that there is challenging opinion here. Why is the research by Gates not more widely publicised? Has it had peer criticism? I notice he starved the worms for the experiment. One would expect that this would impair their growth, so perhaps in normal living conditions, with access to food and normal soil moisture, they might regenerate even better? I'm not a scientist really but I am researching earthworm conservation and it would be useful to know the truth, more up to date research if helpful as there's such conflicting information online.
So... would it be possible to really review all the research and even explain why many sites say cutting is not good for them? I expect it uses up energy unnecessarily. Natalie W. — Preceding unsigned comment added by 2.121.204.48 ( talk) 12:17, 10 December 2012 (UTC)
"Lumbricus terrestris Linnaeus, 1758 replacing anterior segments from as far back as 13/14 and 16/17 but tail regeneration was never found." - i am not sure i understand this correctly, because i do not know english well. replacing means regrowing? so if head us cut off, it can regrow ? ie small part of head site is cut and thrown off , and the left long tail regrows new head ? (whole length is near 100). what does mean "13/14 and 16/17" ? line between section 13 and 14 and line between sections 16 and 17 ??? "tail regeneration" is regrowing new tail ? i understand this as i written. but russian text at
ru:Регенерация and reply in this topic says vise versa --
Qdinar (
talk) 17:02, 18 June 2013 (UTC)
The article refers to Gates (1972) without identifying the publication further. Is this
? -- Lambiam 09:23, 14 May 2021 (UTC)
Until fairly recently, earthworms have been considered good for North American soil. With the realization that they endanger forests in the United States that have adapted to grow without them, I think we probably are overplaying their role as decomposers "that almost all plants and animals rely on". This makes them seem as important as the fungi, and they are certainly not.
can anyone provide knowledge of whether or not it was actually the NA glaciers that depleted wide areas of earthworms, and they are not therefor "invasives", they are in reality re-populators. —Preceding
unsigned comment added by
206.51.193.200 (
talk) 18:51, 2 September 2010 (UTC)
When did earthworms evolve? Or more precise; when did they leave water and started to live in the earth in terrestrial enviroments? Why did they do it and what adaptations did they go through? Who were their ancestors? In what ways have the worms and the plants evolved together in symbiosis? And why is it so hard to find information about these things?
Do some earthworms play dead?
Amynthas hupeiensis will coil but remain motionless when disturbed, unlike most other pheretimoids, and it emits quite a strong odour. So yes, perhaps it is playing possum.
Do earthworms mate in mating balls like garter snakes? I recently observed a small mass of earthworms forming something quite like a garter snake mating ball. The references I found online in a quick bit of googling all seemed to describe earthworms mating in pairs.
The rainstorm section should be rewritten. The fourth theory presented in the section, about carbonic acid, is completely false. Although the ground may contain a good amount of carbon dioxide, carbonic acid is NEVER present in sufficient quantities to affect the pH in any significant way. —Preceding unsigned comment added by 69.248.83.175 ( talk) 15:23, 25 November 2007 (UTC)
"The classroom dissection of the earthworm and other animals has become controversial in recent years. One response to this has been the development of online "virtual dissections" But.....they're worms. I mean. They don't even have a brain. How could they feel pain? Besides, in Biology 2, I disected a dead one which was preserved in formaldehyde (or some substitute thereof).
Zad
68
13:26, 16 May 2012 (UTC)The crop...Isn't that for storage? I read in this article that it is for grinding, but have read elsewhere that the "gizzard" performs this function in earthworms. I think (and I'm probably wrong) that the crop is a portion of the digestive just before the gizzard, which stores the dead organic matter it eats prior to grinding. Any ideas? Is it different in oligocheates? —Preceding unsigned comment added by Aydan Wessels ( talk • contribs)
I would find it very interesting to know something about who are the closest relatives to the earthworms, when they first left the water and crawled onto land, and how much impact they have had on the flora and faune of earth since they first evolved and how important they are today etc. If this could be added somewhere in the article, it would imprive greatly. 217.68.114.116 15:53, 29 November 2006 (UTC)
can someone find a better pic for the anatomy?-- Cyhborg 13:03, 2 December 2006 (UTC)
http://kentsimmons.uwinnipeg.ca/16cm05/1116/33-23-EarthwormAnatomy-L.jpg' Sorry, I don't know how to get it onto the article...
I don't know much (anything) about Earthworms, but I found this article to be very informative and well written. I'd like to offer a friendly critique: the article could use a great deal more citations throughout.
Nice work to everyone that's contributed so far! I've gone ahead and given it a B-class rating, I hope you're all in agreement. A great example of a developing wikipedia article. I've also added this article to my watchlist and will keep a sharp eye out for vandalism (it's about all I can help out with here). -- Nemilar 04:39, 13 March 2007 (UTC) PLEASE help to reduce the vandalism - almost every other edit is mischievous. —Preceding unsigned comment added by 123.198.14.36 ( talk) 17:26, 1 November 2007 (UTC)
What do earthworms eat? Can someone knowledgeable expand this article with this information? Kwertii 23:55, 25 April 2007 (UTC)
They feed off the bacteria in the soil. — Preceding unsigned comment added by Duderdude12345 ( talk • contribs) 21:13, 19 May 2012 (UTC)
There is a bit on accumulation up the foodchain (in 'threats' section). COuple of comments: 1. Bioconcentration factors (BCFs) of >20 are very common. I don't know where this figure came from. 2. OK, the principle of bioaccumulation is well-established, but are there any real examples of wildlife mortality (or any health problems at all?) from eating toxic worms? I'm not aware of any in the scientific literature -- if this isn't backed up by citing something reliable, I think this should be deleted. jake b 20:31, 8 May 2007 (UTC)
Can editors please stop changing the taxobox to a colour other than pink. Thankyou. Abbott75 10:29, 12 May 2007 (UTC)
I'd appreciate it if people gave more information of the genes in worms.
can earth worms see red light? 205.222.248.204 16:47, 7 June 2007 (UTC)
According to google...
9cm = about 3 1/2 inches
10m = about 32 feet
However the Giant Gippsland Earthworm article gives 3 meters as a length for a big one. (That's about 10ft) I wonder if these numbers are reliable? or a bit mixed up? Billybigarms 11:43, 10 June 2007 (UTC)
ANSWER: this datum is pretty reliable, Amynthas mekongianus is also ~3m.
what are the improtance of earthworms to farmers? —Preceding
unsigned comment added by
190.80.53.60 (
talk) 19:41, 13 February 2008 (UTC)
This section is written in an overly positive (almost hyperbolic) style. I have deleted just a couple of the more extreme statements. 155.198.148.173 ( talk) 21:09, 8 January 2008 (UTC)
I agree that this section needs some work. Specifically, under the "chemical" subheading, I read that "Investigations in the US show that fresh earthworm casts are 5 times richer in available nitrogen, 7 times richer in available phosphates and 11 times richer in available potash than the surrounding upper 6 inches (150 mm) of soil.", with no reference whatsoever. I read similar figures in Steve Solomon's "Organic Gardener's Composting", which I will investigate to see what source he cites. However, the references for this article as a whole needs some serious improvement. I would be interested to know whether earthworm casts are so concentrated because of some special habit or property of the earthworm, or whether it is simply due to the universal nature of heterotrophs to concentrate nutrients in their poop. Any ideas? Noclock ( talk) 23:47, 15 April 2009 (UTC)
can anyone verify or cite reliable information on the amount of worm castings a worm produces in a day, particularly re the statement often heard that they produce their weight in castings each day. —Preceding unsigned comment added by 206.51.193.200 ( talk) 18:53, 2 September 2010 (UTC)
I don't know why someone has changed this to four categories - there are three standard accepted ecophysiological categories not four! Earthworms pretty much only live in what we would commonly call 'topsoil' layers, which are not to be confused with actual soil horizons. Epige worms are litter/compost worms. I have checked the reference given for this comment (no. 4), and although it's not the best (that would be the original reference from Bouche -- this one isn't a proper peer-reviewed article), it does quite correctly give the three classes only, so I have left it in there. 155.198.148.173 ( talk) 19:59, 7 July 2008 (UTC)
How do earthworms move? in detail please 61.68.238.233 ( talk) 08:50, 8 September 2008 (UTC)
Worms are really helpful to the soil. Especially for the farmers. —Preceding unsigned comment added by 124.107.181.61 ( talk) 05:57, 28 September 2008 (UTC)
Sadly, this whole article is losing consistency - it's written very patchily, with different levels of fact and speculation in different places. There are all kinds of statements and comments just shoved in at random, i.e. in inappropriate sections. I think it would be ideal if someone would do a complete rewrite (maybe I'll have a go in the future, but don't have time now). I've also added Edwards + Bohlen's "Biology and Ecology of Earthworms" under further reading, as I have always considered this the most comprehensive and authoritative text for the general reader. (I see there's a 4th edition coming out but haven't got a copy yet.) Is there a way to highlight this text in particular, as a way of getting reliable information on earthworms? (I don't count myself as an expert earthworm biologist, for sure.) Worldoffish ( talk) 18:05, 16 March 2009 (UTC)
erthworms have no eyes thats it —Preceding unsigned comment added by 119.95.151.88 ( talk) 11:53, 17 March 2009 (UTC)
earthworms as well as leeches and many segmented marine worms are annelids they belong to phylum annelids they name phylum comes from latin term annulus which main ring annelids have bodies that are divided into segmentation they have more complex bodies and well developed organ system than any other worms CEATED BY; EDDMARC —Preceding unsigned comment added by 119.95.151.88 ( talk) 12:03, 17 March 2009 (UTC)
{{
cite book}}
: Unknown parameter |coauthors=
ignored (|author=
suggested) (
help) Pp. 40-141 say that: earthworm species are either very localized or near-global in distribution; the near-global ones have been spread accidentally by humans; the localized ones live in the northern hemisphere, between the deserts and seas to the south and the southern limit of the
Quaternary
glaciations, which suggests that more northerly populations were wiped out by the ice and the southerly populations have been very slow to re-colonize the devastated areas. --
Philcha (
talk) 21:07, 12 April 2009 (UTC)The entire Behavior subsection "Rainstorms," despite being poorly written, completely trivial, and totally lacking in attribution or citation, is likely adapted completely from this website:
http://www.miscfaq.com/earthworms-surface-rain/
As it stands, it should be removed until it becomes coherent, informative (which it is not), and attributable.
I just found this site here: http://www.masterliness.com/a/Earthworm.htm It looks like it plagiarized this page almost word for word, though it looks like it may have been an older version. —Preceding unsigned comment added by 173.166.27.154 ( talk) 19:13, 19 May 2011 (UTC)
These single celled earthworms eat in a unique way: their mouth cavity connects directly into the digestive tract without any intermediate processes. Most earthworms are decomposers feeding on undecayed leaf and other plant matter, others are more geophagous.
Single celled earthworms? I don't think such a thing exists! Does the writer really mean "singled celled" or do they mean "single cavity" or something odd that I'm not thinking of? This should either be explained or removed! —Preceding unsigned comment added by John Elson ( talk • contribs) 15:57, 30 September 2009 (UTC)
they are edible and great and nutritious full of protein.Great for you body to take in.....:) —Preceding unsigned comment added by 204.100.229.90 ( talk) 20:39, 1 March 2010 (UTC)
Shut up. That's actually a bit cruel to earthworms, and it's a bit disgusting. I prefer perred salami 78.150.185.30 ( talk) 10:44, 10 April 2010 (UTC)
"...worms may be using the moist conditions on the surface to travel more quickly than they can underground, thus colonizing new areas more quickly...".
How could a worm care to colonize if it is living well off where it is at?
By Bernie
189.129.200.44 ( talk) 07:38, 12 May 2010 (UTC)
What about including a section on earthworms' bioluminescent properties? Bowenj10 ( talk) 03:35, 6 September 2010 (UTC)
This article does not mention where Earthworms live around the world. In know the exist in Asia. Where else do they live and what kinds of worms exist at different places? —Preceding unsigned comment added by 183.89.179.62 ( talk) 11:36, 5 April 2011 (UTC)
"However, this behavior is limited to only a few species and L. terrestris is rarely, if ever, one of those found stranded on impermeable surfaces, this hypothesis does not seem likely to be true." because there is no citation. Yyes I am aware that the section as a whole is screaming for them, but this particular sentence seemed a little too subjective. I mean "this hypothesis does not seem likely to be true."? Come on now, then I can say my hypothesis is that you are a neanderthal and it is absolutely, definitely, highly, most likely, to be true ;) — Preceding unsigned comment added by Hodeken ( talk • contribs) 16:15, 19 October 2011 (UTC)
I think this topic is notable enough and distinct enough to deserve its own article, along the lines of Gypsy moths in the United States. There is more information that could be added, and probably will be added as awareness grows among the public. The parent article is almost large enough that a split could be advisable based on size alone.-- Brambleshire ( talk) 15:21, 29 April 2012 (UTC)
Zad
68
19:34, 14 May 2012 (UTC)I am removing this whole section from the article, because it's entirely unsourced personal speculation and original research. But I didn't want to lose it entirely so I'm putting it here. I'll go back later and see if I can find reliable source support for any of this, but I haven't seen it addressed yet in good scientific sources.
Earthworms can sometimes be found on the surface of the ground following heavy rain storms, as a storm may flood the soil with excessive water. However, if the surface where they find themselves is unexpectedly paved, rocky, or compacted (hardened), they may become stranded, potentially suffering injury or death from causes such as heat, exposure, dehydration, or predation. Note, there are some earthworm species that can survive for several days in water if it is sufficiently oxygenated.
Earthworms may also come to the surface during rain in order to mate, and therefore, an alternative hypothesis concerning "stranding" behavior is that as some species (notably Lumbricus terrestris) come to the surface to mate, they may become stranded.
Another hypothesis is that the worms may be using the moist conditions on the surface so they can breathe and to travel more quickly than they can underground, thus moving to and colonizing new areas more quickly. Since the relative humidity of the surface and air is higher during and after rain, they do not become dehydrated quite as rapidly. However, if true, this is a very risky behavior near dawn, in high summer, or in the daytime, since earthworms die quickly when exposed to direct sunlight with its high heat, light and strong UV content, and are more vulnerable to predators such as birds.
A further hypothesis is that, because there are many other organisms beside the earthworm in the ground as well, and these organisms all tend to increase respiration as water content of the soil increases, carbon dioxide gas may dissolve into the rainwater forming a higher than usual acid content carbonic acid in the soil area. As the soil becomes too acidic for the worms, they seek a more neutral environment on the surface.
Zad
68
02:22, 18 May 2012 (UTC)
"An earthworm is a segmented animal commonly found living in soil that is shaped like a tube (the gut) within a tube (the body)." - i've never seen soil shaped like a tube within a tube. 99.183.195.160 ( talk) 16:18, 3 September 2012 (UTC)
I have a zoology text on my desk that declares the dorsal vessel to the the "true heart" and the aortic arches to be simply valves the regulate the flow of blood to the ventral vessel in a steady flow. Every illustration I find via google searches of images seems to label the aortic arches as the hearts. Which is it? Zedshort ( talk) 22:31, 18 April 2013 (UTC)
Zad
68
00:42, 19 April 2013 (UTC)
We could use a better sketch of the anatomy. I searched WP for such a thing and found nothing compelling. I am not familiar with the process of adding images to the library. Zedshort ( talk) 03:06, 22 April 2013 (UTC)
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"Several common earthworm species are mostly parthenogenetic, that is, with asexual reproduction resulting in clones."
The above statement, located under 1.6, Reproduction, should have a clearer definition or "parthenogenetic", or none at all. Currently the goal of the sentence appears to be to communicate that many common species of earthworm are capable of parthenogenesis and define the term, but is sloppy. The sentence may simply be "Several common earthworm species are mostly parthenogenetic." Alternatively, "that is, with asexual reproduction resulting in clones" could be revised to something like "that is, are capable of asexual reproduction yielding clones."
Under 3, Locomotion and importance to soil, there are a couple simple errors. "...as a result of the its movment through its lubricated tunnels" should be corrected to read "as a result of their movement through their lubricated tunnels."
MacabreMirth (
talk) 07:03, 30 April 2013 (UTC)
Are there any estimates of the total number of earthworms in the world? Some sources say that there can be maybe 1,000,000 per acre of good soil. Some information about numbers would be good in the article. 86.160.221.91 ( talk) 21:50, 17 February 2014 (UTC)
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(Please add this link below to the bottom of your English page, so that the Finnish link will appear in the language bar, thank you)
16hiljat ( talk) 01:03, 20 May 2014 (UTC)
It may be useful to include information as to how earthworms are being used in restoration projects. [1] Physiology-is-fun ( talk) 08:47, 27 January 2016 (UTC)
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What is the birthing process like with earthworms?
Eathworms is the article I have chosen. This article was pretty lengthy, but included basic information about this animal. The information stays pretty relevant to the topic. While reading I did notice some gaps and lack of citations at first, but the author and others were able to add information and the correct citations.One thing that bothered me was the layout of the page and how many topic changes there were. They may be able to group certain topics together such as Orgin and History with Evolution. As far as tone goes, this article is pretty scientific and so most information presented are facts.
ChicagoCub21 ( talk) 20:16, 17 September 2018 (UTC)Martin
not a subclass. 82.177.40.11 ( talk) 10:47, 22 September 2018 (UTC)
Are earthworms in a single taxon? Is it a paraphyletic group or a polyphyletic group? Is it Megadrilacea (which the citation, ITIS, says in invalid)? Is it just Lumbricina and Moniligastrida, and excluding Haplotaxida? Is it Lumbricina, Moniligastrida, and Haplotaxida, and thus equivalent to Oligochaeta? Taxoboxes are not allowed to have multiple parents: one needs to be chose and the disputes can be discussed in the text. If it is just a common name, and not a taxon, then the taxobox should be removed. If is para/polyphyletic, then a {{ paraphyletic group}} box should be used. What's there now is a mess, and the article does not make it any clearer. -- Nessie ( talk) 04:00, 2 March 2019 (UTC)
Voice concern 2402:8100:2650:FA23:3B36:D87F:2662:65ED ( talk) 09:26, 9 January 2022 (UTC)
Hello CactiStaccingCrane and @ ZoombomberGuy: I think we should be this detailed. Invasive Spices ( talk) 10 February 2022 (UTC)
I came here while working on the article biodiversity loss which has a small section on earthworms. I was surprised to see that there was no dedicated section about "threats" in this article? I have added that now and moved one paragraph and a link to there, as a starting point. This is for example one paper about it: https://www.mdpi.com/2571-8789/2/2/33 . And this one: https://www.jstage.jst.go.jp/article/ras/3/0/3_25/_pdf/-char/en EMsmile ( talk) 12:07, 2 February 2024 (UTC)
This article is written in American English, which has its own spelling conventions (color, defense, traveled) and some terms that are used in it may be different or absent from other varieties of English. According to the relevant style guide, this should not be changed without broad consensus. |
This
level-4 vital article is rated C-class on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | ||||||||||||||||||||||||||||
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Why does the See Also section of this article link to the French Wikipedia article for La Station d'écologie de Lamto? So far as I can tell, that article does not have anything to do with earthworms? TheMrP ( talk) 23:05, 5 February 2018 (UTC)
Earthworms are amazing creatures that play a vital role in soil ecosystems. They feed on organic matter in the soil and excrete it as castings, which are rich in nutrients and beneficial microorganisms. Earthworm excretion helps improve the soil structure, fertility, and water-holding capacity. It also reduces soil compaction and erosion, and enhances plant growth and health. — Preceding unsigned comment added by 2604:3D08:BD80:CF00:495:469A:4DF:2A77 ( talk) 21:37, 2 November 2023 (UTC)
Earthworm expert Cody Lundeen says earthworms have the nutritional content of two eggs.. Reports a reliable source — Preceding unsigned comment added by Raceingearthworms ( talk • contribs) 02:28, 13 April 2013 (UTC)
Could someone include the protein content/nutritional value of the common earthworm? They're delicious creatures, and very pleasant to eat for those with poor digestion.
Keep in mind the "Threats to Earthworms" Section. While they might be pretty yummy (Not that I would know) it's probably pretty dangerous to try to eat them because of all the chemicals in the ground that they consume.
Oh yes, I'm sure their delectable. —Preceding unsigned comment added by Zone156 ( talk • contribs) 23:51, 18 October 2007 (UTC)
[it's probably pretty dangerous to try to eat them because of all the chemicals in the ground that they consume] you could just cook it —Preceding unsigned comment added by 216.162.81.161 ( talk) 16:48, 4 May 2009 (UTC)
I would like to see nutritional information for earthworms. Percent protein, fat, etc, but particularly the amounts of vitamins and minerals. —Preceding unsigned comment added by 24.56.247.187 ( talk) 10:17, 6 May 2010 (UTC)
Cooking is good for killing microbes that can't take the heat, but I don't think it's going to do much to get rid of poison. -- 98.232.209.203 ( talk) 08:47, 27 June 2012 (UTC)
"Various species of earthworms are used in vermiculture, the practice of feeding organic waste to earthworms to decompose (digest) it, a form of composting by the use of worms. These are usually ''Eisenia Fetida'' or the Brandling worm, also known as the Tiger worm or Red Wriggler."
Eisenia Fetida doesn't actually live freely in the soil but in compost so arn't really earthwormsm, but I'll leave the article as it is for now... quercus robur
Soliciting opinions: Should there be entries for some of the more interesting species/varieties (e.g. Red Wrigglers)? FZ 01:25, 18 Jun 2004 (UTC)
Oligochaeta (which is either a class or subclass depending on the author)
Except that the taxobox lists oligochaeta as an order. I'm not knowledgable enough to correct this myself, but consistency within the oage would be nice. Rho 23:02, 16 Sep 2004 (UTC)
This page in my User namespace has some information about earthworms that can be added here, if anyone so desires: User:Stellertony/Notepad/Earthworm Stellertony the Bookcrosser 06:52, 17 May 2005 (UTC)
I have heard that earthworms have powerful regenerative abilities, being able to regrow if cut in half. I have even heard that if cut in half, an earthworm can regenerate into two new individuals. Is this true? Please add info to the article. SpectrumDT 22:26, 4 November 2005 (UTC)
G.E. Gates spent several years determining the regenerative abilities of earthworms. Because the incision levels from anterior or posterior overlap in several species then, in theory at least, it is possible to get two worms from one "individual". Head regererates are farily common in some Lumbricidae, and I have seen them in Pontoscolex corethrurus (Glossoscolecidae). One of the most adept regenerators is Perionyx excavatus (Megascolecidae). Hope this helps the discussion. Rob B.
This is great that there is challenging opinion here. Why is the research by Gates not more widely publicised? Has it had peer criticism? I notice he starved the worms for the experiment. One would expect that this would impair their growth, so perhaps in normal living conditions, with access to food and normal soil moisture, they might regenerate even better? I'm not a scientist really but I am researching earthworm conservation and it would be useful to know the truth, more up to date research if helpful as there's such conflicting information online.
So... would it be possible to really review all the research and even explain why many sites say cutting is not good for them? I expect it uses up energy unnecessarily. Natalie W. — Preceding unsigned comment added by 2.121.204.48 ( talk) 12:17, 10 December 2012 (UTC)
"Lumbricus terrestris Linnaeus, 1758 replacing anterior segments from as far back as 13/14 and 16/17 but tail regeneration was never found." - i am not sure i understand this correctly, because i do not know english well. replacing means regrowing? so if head us cut off, it can regrow ? ie small part of head site is cut and thrown off , and the left long tail regrows new head ? (whole length is near 100). what does mean "13/14 and 16/17" ? line between section 13 and 14 and line between sections 16 and 17 ??? "tail regeneration" is regrowing new tail ? i understand this as i written. but russian text at
ru:Регенерация and reply in this topic says vise versa --
Qdinar (
talk) 17:02, 18 June 2013 (UTC)
The article refers to Gates (1972) without identifying the publication further. Is this
? -- Lambiam 09:23, 14 May 2021 (UTC)
Until fairly recently, earthworms have been considered good for North American soil. With the realization that they endanger forests in the United States that have adapted to grow without them, I think we probably are overplaying their role as decomposers "that almost all plants and animals rely on". This makes them seem as important as the fungi, and they are certainly not.
can anyone provide knowledge of whether or not it was actually the NA glaciers that depleted wide areas of earthworms, and they are not therefor "invasives", they are in reality re-populators. —Preceding
unsigned comment added by
206.51.193.200 (
talk) 18:51, 2 September 2010 (UTC)
When did earthworms evolve? Or more precise; when did they leave water and started to live in the earth in terrestrial enviroments? Why did they do it and what adaptations did they go through? Who were their ancestors? In what ways have the worms and the plants evolved together in symbiosis? And why is it so hard to find information about these things?
Do some earthworms play dead?
Amynthas hupeiensis will coil but remain motionless when disturbed, unlike most other pheretimoids, and it emits quite a strong odour. So yes, perhaps it is playing possum.
Do earthworms mate in mating balls like garter snakes? I recently observed a small mass of earthworms forming something quite like a garter snake mating ball. The references I found online in a quick bit of googling all seemed to describe earthworms mating in pairs.
The rainstorm section should be rewritten. The fourth theory presented in the section, about carbonic acid, is completely false. Although the ground may contain a good amount of carbon dioxide, carbonic acid is NEVER present in sufficient quantities to affect the pH in any significant way. —Preceding unsigned comment added by 69.248.83.175 ( talk) 15:23, 25 November 2007 (UTC)
"The classroom dissection of the earthworm and other animals has become controversial in recent years. One response to this has been the development of online "virtual dissections" But.....they're worms. I mean. They don't even have a brain. How could they feel pain? Besides, in Biology 2, I disected a dead one which was preserved in formaldehyde (or some substitute thereof).
Zad
68
13:26, 16 May 2012 (UTC)The crop...Isn't that for storage? I read in this article that it is for grinding, but have read elsewhere that the "gizzard" performs this function in earthworms. I think (and I'm probably wrong) that the crop is a portion of the digestive just before the gizzard, which stores the dead organic matter it eats prior to grinding. Any ideas? Is it different in oligocheates? —Preceding unsigned comment added by Aydan Wessels ( talk • contribs)
I would find it very interesting to know something about who are the closest relatives to the earthworms, when they first left the water and crawled onto land, and how much impact they have had on the flora and faune of earth since they first evolved and how important they are today etc. If this could be added somewhere in the article, it would imprive greatly. 217.68.114.116 15:53, 29 November 2006 (UTC)
can someone find a better pic for the anatomy?-- Cyhborg 13:03, 2 December 2006 (UTC)
http://kentsimmons.uwinnipeg.ca/16cm05/1116/33-23-EarthwormAnatomy-L.jpg' Sorry, I don't know how to get it onto the article...
I don't know much (anything) about Earthworms, but I found this article to be very informative and well written. I'd like to offer a friendly critique: the article could use a great deal more citations throughout.
Nice work to everyone that's contributed so far! I've gone ahead and given it a B-class rating, I hope you're all in agreement. A great example of a developing wikipedia article. I've also added this article to my watchlist and will keep a sharp eye out for vandalism (it's about all I can help out with here). -- Nemilar 04:39, 13 March 2007 (UTC) PLEASE help to reduce the vandalism - almost every other edit is mischievous. —Preceding unsigned comment added by 123.198.14.36 ( talk) 17:26, 1 November 2007 (UTC)
What do earthworms eat? Can someone knowledgeable expand this article with this information? Kwertii 23:55, 25 April 2007 (UTC)
They feed off the bacteria in the soil. — Preceding unsigned comment added by Duderdude12345 ( talk • contribs) 21:13, 19 May 2012 (UTC)
There is a bit on accumulation up the foodchain (in 'threats' section). COuple of comments: 1. Bioconcentration factors (BCFs) of >20 are very common. I don't know where this figure came from. 2. OK, the principle of bioaccumulation is well-established, but are there any real examples of wildlife mortality (or any health problems at all?) from eating toxic worms? I'm not aware of any in the scientific literature -- if this isn't backed up by citing something reliable, I think this should be deleted. jake b 20:31, 8 May 2007 (UTC)
Can editors please stop changing the taxobox to a colour other than pink. Thankyou. Abbott75 10:29, 12 May 2007 (UTC)
I'd appreciate it if people gave more information of the genes in worms.
can earth worms see red light? 205.222.248.204 16:47, 7 June 2007 (UTC)
According to google...
9cm = about 3 1/2 inches
10m = about 32 feet
However the Giant Gippsland Earthworm article gives 3 meters as a length for a big one. (That's about 10ft) I wonder if these numbers are reliable? or a bit mixed up? Billybigarms 11:43, 10 June 2007 (UTC)
ANSWER: this datum is pretty reliable, Amynthas mekongianus is also ~3m.
what are the improtance of earthworms to farmers? —Preceding
unsigned comment added by
190.80.53.60 (
talk) 19:41, 13 February 2008 (UTC)
This section is written in an overly positive (almost hyperbolic) style. I have deleted just a couple of the more extreme statements. 155.198.148.173 ( talk) 21:09, 8 January 2008 (UTC)
I agree that this section needs some work. Specifically, under the "chemical" subheading, I read that "Investigations in the US show that fresh earthworm casts are 5 times richer in available nitrogen, 7 times richer in available phosphates and 11 times richer in available potash than the surrounding upper 6 inches (150 mm) of soil.", with no reference whatsoever. I read similar figures in Steve Solomon's "Organic Gardener's Composting", which I will investigate to see what source he cites. However, the references for this article as a whole needs some serious improvement. I would be interested to know whether earthworm casts are so concentrated because of some special habit or property of the earthworm, or whether it is simply due to the universal nature of heterotrophs to concentrate nutrients in their poop. Any ideas? Noclock ( talk) 23:47, 15 April 2009 (UTC)
can anyone verify or cite reliable information on the amount of worm castings a worm produces in a day, particularly re the statement often heard that they produce their weight in castings each day. —Preceding unsigned comment added by 206.51.193.200 ( talk) 18:53, 2 September 2010 (UTC)
I don't know why someone has changed this to four categories - there are three standard accepted ecophysiological categories not four! Earthworms pretty much only live in what we would commonly call 'topsoil' layers, which are not to be confused with actual soil horizons. Epige worms are litter/compost worms. I have checked the reference given for this comment (no. 4), and although it's not the best (that would be the original reference from Bouche -- this one isn't a proper peer-reviewed article), it does quite correctly give the three classes only, so I have left it in there. 155.198.148.173 ( talk) 19:59, 7 July 2008 (UTC)
How do earthworms move? in detail please 61.68.238.233 ( talk) 08:50, 8 September 2008 (UTC)
Worms are really helpful to the soil. Especially for the farmers. —Preceding unsigned comment added by 124.107.181.61 ( talk) 05:57, 28 September 2008 (UTC)
Sadly, this whole article is losing consistency - it's written very patchily, with different levels of fact and speculation in different places. There are all kinds of statements and comments just shoved in at random, i.e. in inappropriate sections. I think it would be ideal if someone would do a complete rewrite (maybe I'll have a go in the future, but don't have time now). I've also added Edwards + Bohlen's "Biology and Ecology of Earthworms" under further reading, as I have always considered this the most comprehensive and authoritative text for the general reader. (I see there's a 4th edition coming out but haven't got a copy yet.) Is there a way to highlight this text in particular, as a way of getting reliable information on earthworms? (I don't count myself as an expert earthworm biologist, for sure.) Worldoffish ( talk) 18:05, 16 March 2009 (UTC)
erthworms have no eyes thats it —Preceding unsigned comment added by 119.95.151.88 ( talk) 11:53, 17 March 2009 (UTC)
earthworms as well as leeches and many segmented marine worms are annelids they belong to phylum annelids they name phylum comes from latin term annulus which main ring annelids have bodies that are divided into segmentation they have more complex bodies and well developed organ system than any other worms CEATED BY; EDDMARC —Preceding unsigned comment added by 119.95.151.88 ( talk) 12:03, 17 March 2009 (UTC)
{{
cite book}}
: Unknown parameter |coauthors=
ignored (|author=
suggested) (
help) Pp. 40-141 say that: earthworm species are either very localized or near-global in distribution; the near-global ones have been spread accidentally by humans; the localized ones live in the northern hemisphere, between the deserts and seas to the south and the southern limit of the
Quaternary
glaciations, which suggests that more northerly populations were wiped out by the ice and the southerly populations have been very slow to re-colonize the devastated areas. --
Philcha (
talk) 21:07, 12 April 2009 (UTC)The entire Behavior subsection "Rainstorms," despite being poorly written, completely trivial, and totally lacking in attribution or citation, is likely adapted completely from this website:
http://www.miscfaq.com/earthworms-surface-rain/
As it stands, it should be removed until it becomes coherent, informative (which it is not), and attributable.
I just found this site here: http://www.masterliness.com/a/Earthworm.htm It looks like it plagiarized this page almost word for word, though it looks like it may have been an older version. —Preceding unsigned comment added by 173.166.27.154 ( talk) 19:13, 19 May 2011 (UTC)
These single celled earthworms eat in a unique way: their mouth cavity connects directly into the digestive tract without any intermediate processes. Most earthworms are decomposers feeding on undecayed leaf and other plant matter, others are more geophagous.
Single celled earthworms? I don't think such a thing exists! Does the writer really mean "singled celled" or do they mean "single cavity" or something odd that I'm not thinking of? This should either be explained or removed! —Preceding unsigned comment added by John Elson ( talk • contribs) 15:57, 30 September 2009 (UTC)
they are edible and great and nutritious full of protein.Great for you body to take in.....:) —Preceding unsigned comment added by 204.100.229.90 ( talk) 20:39, 1 March 2010 (UTC)
Shut up. That's actually a bit cruel to earthworms, and it's a bit disgusting. I prefer perred salami 78.150.185.30 ( talk) 10:44, 10 April 2010 (UTC)
"...worms may be using the moist conditions on the surface to travel more quickly than they can underground, thus colonizing new areas more quickly...".
How could a worm care to colonize if it is living well off where it is at?
By Bernie
189.129.200.44 ( talk) 07:38, 12 May 2010 (UTC)
What about including a section on earthworms' bioluminescent properties? Bowenj10 ( talk) 03:35, 6 September 2010 (UTC)
This article does not mention where Earthworms live around the world. In know the exist in Asia. Where else do they live and what kinds of worms exist at different places? —Preceding unsigned comment added by 183.89.179.62 ( talk) 11:36, 5 April 2011 (UTC)
"However, this behavior is limited to only a few species and L. terrestris is rarely, if ever, one of those found stranded on impermeable surfaces, this hypothesis does not seem likely to be true." because there is no citation. Yyes I am aware that the section as a whole is screaming for them, but this particular sentence seemed a little too subjective. I mean "this hypothesis does not seem likely to be true."? Come on now, then I can say my hypothesis is that you are a neanderthal and it is absolutely, definitely, highly, most likely, to be true ;) — Preceding unsigned comment added by Hodeken ( talk • contribs) 16:15, 19 October 2011 (UTC)
I think this topic is notable enough and distinct enough to deserve its own article, along the lines of Gypsy moths in the United States. There is more information that could be added, and probably will be added as awareness grows among the public. The parent article is almost large enough that a split could be advisable based on size alone.-- Brambleshire ( talk) 15:21, 29 April 2012 (UTC)
Zad
68
19:34, 14 May 2012 (UTC)I am removing this whole section from the article, because it's entirely unsourced personal speculation and original research. But I didn't want to lose it entirely so I'm putting it here. I'll go back later and see if I can find reliable source support for any of this, but I haven't seen it addressed yet in good scientific sources.
Earthworms can sometimes be found on the surface of the ground following heavy rain storms, as a storm may flood the soil with excessive water. However, if the surface where they find themselves is unexpectedly paved, rocky, or compacted (hardened), they may become stranded, potentially suffering injury or death from causes such as heat, exposure, dehydration, or predation. Note, there are some earthworm species that can survive for several days in water if it is sufficiently oxygenated.
Earthworms may also come to the surface during rain in order to mate, and therefore, an alternative hypothesis concerning "stranding" behavior is that as some species (notably Lumbricus terrestris) come to the surface to mate, they may become stranded.
Another hypothesis is that the worms may be using the moist conditions on the surface so they can breathe and to travel more quickly than they can underground, thus moving to and colonizing new areas more quickly. Since the relative humidity of the surface and air is higher during and after rain, they do not become dehydrated quite as rapidly. However, if true, this is a very risky behavior near dawn, in high summer, or in the daytime, since earthworms die quickly when exposed to direct sunlight with its high heat, light and strong UV content, and are more vulnerable to predators such as birds.
A further hypothesis is that, because there are many other organisms beside the earthworm in the ground as well, and these organisms all tend to increase respiration as water content of the soil increases, carbon dioxide gas may dissolve into the rainwater forming a higher than usual acid content carbonic acid in the soil area. As the soil becomes too acidic for the worms, they seek a more neutral environment on the surface.
Zad
68
02:22, 18 May 2012 (UTC)
"An earthworm is a segmented animal commonly found living in soil that is shaped like a tube (the gut) within a tube (the body)." - i've never seen soil shaped like a tube within a tube. 99.183.195.160 ( talk) 16:18, 3 September 2012 (UTC)
I have a zoology text on my desk that declares the dorsal vessel to the the "true heart" and the aortic arches to be simply valves the regulate the flow of blood to the ventral vessel in a steady flow. Every illustration I find via google searches of images seems to label the aortic arches as the hearts. Which is it? Zedshort ( talk) 22:31, 18 April 2013 (UTC)
Zad
68
00:42, 19 April 2013 (UTC)
We could use a better sketch of the anatomy. I searched WP for such a thing and found nothing compelling. I am not familiar with the process of adding images to the library. Zedshort ( talk) 03:06, 22 April 2013 (UTC)
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"Several common earthworm species are mostly parthenogenetic, that is, with asexual reproduction resulting in clones."
The above statement, located under 1.6, Reproduction, should have a clearer definition or "parthenogenetic", or none at all. Currently the goal of the sentence appears to be to communicate that many common species of earthworm are capable of parthenogenesis and define the term, but is sloppy. The sentence may simply be "Several common earthworm species are mostly parthenogenetic." Alternatively, "that is, with asexual reproduction resulting in clones" could be revised to something like "that is, are capable of asexual reproduction yielding clones."
Under 3, Locomotion and importance to soil, there are a couple simple errors. "...as a result of the its movment through its lubricated tunnels" should be corrected to read "as a result of their movement through their lubricated tunnels."
MacabreMirth (
talk) 07:03, 30 April 2013 (UTC)
Are there any estimates of the total number of earthworms in the world? Some sources say that there can be maybe 1,000,000 per acre of good soil. Some information about numbers would be good in the article. 86.160.221.91 ( talk) 21:50, 17 February 2014 (UTC)
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(Please add this link below to the bottom of your English page, so that the Finnish link will appear in the language bar, thank you)
16hiljat ( talk) 01:03, 20 May 2014 (UTC)
It may be useful to include information as to how earthworms are being used in restoration projects. [1] Physiology-is-fun ( talk) 08:47, 27 January 2016 (UTC)
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What is the birthing process like with earthworms?
Eathworms is the article I have chosen. This article was pretty lengthy, but included basic information about this animal. The information stays pretty relevant to the topic. While reading I did notice some gaps and lack of citations at first, but the author and others were able to add information and the correct citations.One thing that bothered me was the layout of the page and how many topic changes there were. They may be able to group certain topics together such as Orgin and History with Evolution. As far as tone goes, this article is pretty scientific and so most information presented are facts.
ChicagoCub21 ( talk) 20:16, 17 September 2018 (UTC)Martin
not a subclass. 82.177.40.11 ( talk) 10:47, 22 September 2018 (UTC)
Are earthworms in a single taxon? Is it a paraphyletic group or a polyphyletic group? Is it Megadrilacea (which the citation, ITIS, says in invalid)? Is it just Lumbricina and Moniligastrida, and excluding Haplotaxida? Is it Lumbricina, Moniligastrida, and Haplotaxida, and thus equivalent to Oligochaeta? Taxoboxes are not allowed to have multiple parents: one needs to be chose and the disputes can be discussed in the text. If it is just a common name, and not a taxon, then the taxobox should be removed. If is para/polyphyletic, then a {{ paraphyletic group}} box should be used. What's there now is a mess, and the article does not make it any clearer. -- Nessie ( talk) 04:00, 2 March 2019 (UTC)
Voice concern 2402:8100:2650:FA23:3B36:D87F:2662:65ED ( talk) 09:26, 9 January 2022 (UTC)
Hello CactiStaccingCrane and @ ZoombomberGuy: I think we should be this detailed. Invasive Spices ( talk) 10 February 2022 (UTC)
I came here while working on the article biodiversity loss which has a small section on earthworms. I was surprised to see that there was no dedicated section about "threats" in this article? I have added that now and moved one paragraph and a link to there, as a starting point. This is for example one paper about it: https://www.mdpi.com/2571-8789/2/2/33 . And this one: https://www.jstage.jst.go.jp/article/ras/3/0/3_25/_pdf/-char/en EMsmile ( talk) 12:07, 2 February 2024 (UTC)