From Wikipedia, the free encyclopedia

Stenella
Temporal range: Neogene–Present
Striped dolphin
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Artiodactyla
Infraorder: Cetacea
Family: Delphinidae
Subfamily: Delphininae
Genus: Stenella
Gray, 1866
Type species
Steno attenuatus [1]
Gray, 1846
Species

S. attenuata
S. frontalis
S. longirostris
S. clymene
S. coeruleoalba
S. rayi

Stenella is a genus of marine mammals in Delphinidae, the family informally known as the oceanic dolphins. [2] [3] [4]

Species

Currently, five species are recognised in this genus: [3]

Image Common Name Scientific name Distribution
Pantropical spotted dolphin S. attenuata eastern Pacific Ocean
Atlantic spotted dolphin S. frontalis tropical areas of the Atlantic Ocean. I
Spinner dolphin S. longirostris Pacific Ocean
Clymene dolphin S. clymene Atlantic Ocean.
Striped dolphin S. coeruleoalba North and South Atlantic Oceans, including the Mediterranean

S. rayi was a species of this genus found in North Carolina, in the early Pliocene. [5]

The common name for species in this genus is the "spotted dolphins" or the "bridled dolphins". [2] [3] They are found in temperate and tropical seas all around the world. [2] [3] Individuals of several species begin their lives spotless and become steadily more covered in darker spots as they get older. [2] [3]

The genus name comes from the Greek stenos meaning narrow. [2] [3] It was coined by John Gray in 1866 when he intended it as a subgenus of Steno. [2] Modern taxonomists recognise two genera. [2] [3]

The clymene dolphin (S. clymene) is the only confirmed case of hybrid speciation in marine mammals, descending from the spinner dolphin (S. longirostris) and the striped dolphin (S. coeruleoalba). [6]

Stenella dolphins tend to be more active during nighttime and spend their daytime resting. Although these dolphins are supposed to spend 60% of their daytime resting, they happen to be exposed to human activities for 80% of their day. These patterns of sleep deprivation can have negative impact on their resting habit and leads to decline in their population size. [7]

References

  1. ^ Wilson, D. E.; Reeder, D. M., eds. (2005). Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Johns Hopkins University Press. ISBN  978-0-8018-8221-0. OCLC  62265494.
  2. ^ a b c d e f g Tinker, Spencer Wilkie (1988). Whales of the World. Brill Archive. p. 310. ISBN  9780935848472.
  3. ^ a b c d e f g Klinowska, Margaret; Justin Cooke (1991). Dolphins, Porpoises and Whales of the World. IUCN. p. 429. ISBN  9782880329365.
  4. ^ Walker, Ernest Pillsbury; Ronald M. Nowak; John E. Heyning; Randall R. Reeves; Brent S. Stewart; John E. Heyning; Randall R. Reeves; Brent S. Stewart (2003). Walker's Marine Mammals of the World. JHU Press. p. 264. ISBN  9780801873430.
  5. ^ Bianucci, Giovanni (May 2013). "Septidelphis morii , n. gen. et sp., from the Pliocene of Italy: new evidence of the explosive radiation of true dolphins (Odontoceti, Delphinidae)". Journal of Vertebrate Paleontology. 33 (3): 722–740. doi: 10.1080/02724634.2013.744757. ISSN  0272-4634.
  6. ^ Amaral, Ana R.; Lovewell, Gretchen; Coelho, Maria M.; Amato, George; Rosenbaum, Howard C. (2014). "Hybrid Speciation in a Marine Mammal: The Clymene Dolphin (Stenella clymene)". PLOS ONE. 9 (1): e83645. doi: 10.1371/journal.pone.0083645. PMC  3885441. PMID  24421898.
  7. ^ Tyne, Julian A.; Christiansen, Fredrik; Heenehan, Heather L.; Johnston, David W.; Bejder, Lars (2018). "Chronic exposure of Hawaii Island spinner dolphins ( Stenella longirostris ) to human activities". Royal Society Open Science. 5 (10): 171506. doi: 10.1098/rsos.171506. ISSN  2054-5703. PMC  6227997. PMID  30473795.


From Wikipedia, the free encyclopedia

Stenella
Temporal range: Neogene–Present
Striped dolphin
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Artiodactyla
Infraorder: Cetacea
Family: Delphinidae
Subfamily: Delphininae
Genus: Stenella
Gray, 1866
Type species
Steno attenuatus [1]
Gray, 1846
Species

S. attenuata
S. frontalis
S. longirostris
S. clymene
S. coeruleoalba
S. rayi

Stenella is a genus of marine mammals in Delphinidae, the family informally known as the oceanic dolphins. [2] [3] [4]

Species

Currently, five species are recognised in this genus: [3]

Image Common Name Scientific name Distribution
Pantropical spotted dolphin S. attenuata eastern Pacific Ocean
Atlantic spotted dolphin S. frontalis tropical areas of the Atlantic Ocean. I
Spinner dolphin S. longirostris Pacific Ocean
Clymene dolphin S. clymene Atlantic Ocean.
Striped dolphin S. coeruleoalba North and South Atlantic Oceans, including the Mediterranean

S. rayi was a species of this genus found in North Carolina, in the early Pliocene. [5]

The common name for species in this genus is the "spotted dolphins" or the "bridled dolphins". [2] [3] They are found in temperate and tropical seas all around the world. [2] [3] Individuals of several species begin their lives spotless and become steadily more covered in darker spots as they get older. [2] [3]

The genus name comes from the Greek stenos meaning narrow. [2] [3] It was coined by John Gray in 1866 when he intended it as a subgenus of Steno. [2] Modern taxonomists recognise two genera. [2] [3]

The clymene dolphin (S. clymene) is the only confirmed case of hybrid speciation in marine mammals, descending from the spinner dolphin (S. longirostris) and the striped dolphin (S. coeruleoalba). [6]

Stenella dolphins tend to be more active during nighttime and spend their daytime resting. Although these dolphins are supposed to spend 60% of their daytime resting, they happen to be exposed to human activities for 80% of their day. These patterns of sleep deprivation can have negative impact on their resting habit and leads to decline in their population size. [7]

References

  1. ^ Wilson, D. E.; Reeder, D. M., eds. (2005). Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Johns Hopkins University Press. ISBN  978-0-8018-8221-0. OCLC  62265494.
  2. ^ a b c d e f g Tinker, Spencer Wilkie (1988). Whales of the World. Brill Archive. p. 310. ISBN  9780935848472.
  3. ^ a b c d e f g Klinowska, Margaret; Justin Cooke (1991). Dolphins, Porpoises and Whales of the World. IUCN. p. 429. ISBN  9782880329365.
  4. ^ Walker, Ernest Pillsbury; Ronald M. Nowak; John E. Heyning; Randall R. Reeves; Brent S. Stewart; John E. Heyning; Randall R. Reeves; Brent S. Stewart (2003). Walker's Marine Mammals of the World. JHU Press. p. 264. ISBN  9780801873430.
  5. ^ Bianucci, Giovanni (May 2013). "Septidelphis morii , n. gen. et sp., from the Pliocene of Italy: new evidence of the explosive radiation of true dolphins (Odontoceti, Delphinidae)". Journal of Vertebrate Paleontology. 33 (3): 722–740. doi: 10.1080/02724634.2013.744757. ISSN  0272-4634.
  6. ^ Amaral, Ana R.; Lovewell, Gretchen; Coelho, Maria M.; Amato, George; Rosenbaum, Howard C. (2014). "Hybrid Speciation in a Marine Mammal: The Clymene Dolphin (Stenella clymene)". PLOS ONE. 9 (1): e83645. doi: 10.1371/journal.pone.0083645. PMC  3885441. PMID  24421898.
  7. ^ Tyne, Julian A.; Christiansen, Fredrik; Heenehan, Heather L.; Johnston, David W.; Bejder, Lars (2018). "Chronic exposure of Hawaii Island spinner dolphins ( Stenella longirostris ) to human activities". Royal Society Open Science. 5 (10): 171506. doi: 10.1098/rsos.171506. ISSN  2054-5703. PMC  6227997. PMID  30473795.



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