Biology:Stenella
| Stenella | |
|---|---|
| |
| Striped dolphin | |
Scientific 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 | |
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 |
|---|---|---|---|
.jpg) |
Pantropical spotted dolphin | S. attenuata | eastern Pacific Ocean |
_NOAA.jpg) |
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 |
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).[5]
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.[6]
References
- ↑ 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. http://www.departments.bucknell.edu/biology/resources/msw3/browse.asp?id=14300084.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 Tinker, Spencer Wilkie (1988). Whales of the World. Brill Archive. p. 310. ISBN 9780935848472. https://books.google.com/books?id=ASIVAAAAIAAJ&q=%22Stenella%22&pg=PA137.
- ↑ 3.0 3.1 3.2 3.3 3.4 3.5 3.6 Klinowska, Margaret; Justin Cooke (1991). Dolphins, Porpoises and Whales of the World. IUCN. p. 429. ISBN 9782880329365. https://books.google.com/books?id=QynOriR1MxEC&q=%22Stenella%22.
- ↑ 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.
- ↑ 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. PMID 24421898.
- ↑ 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" (in en). Royal Society Open Science 5 (10): 171506. doi:10.1098/rsos.171506. ISSN 2054-5703. PMID 30473795.
Wikidata ☰ Q594051 entry
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