Английская Википедия:Cephalorhynchus
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Cephalorhynchus is a genus in the dolphin family Delphinidae.
Extant species
It consists of four species:
| Image | Scientific name | Common name | Distribution |
|---|---|---|---|
| Файл:Commerson Dolphin closer.jpg | Commerson's dolphin | C. commersonii | Argentina including Puerto Deseado, in the Strait of Magellan and around Tierra del Fuego, and near the Falkland Islands, near the Kerguelen Islands in the southern part of the Indian Ocean |
| Файл:Black dolphins around isla gordon.jpg | Chilean dolphin | C. eutropia | coast of Chile |
| Файл:Heaviside-Delphin.jpg | Heaviside's dolphin | C. heavisidii | coast of northern Namibia at 17°S and as far south as the southern tip of South Africa |
| Файл:Hector'sDolphinsCloudyBay 21Feb2012 AnjanetteBaker.tif | Hector's dolphin | C. hectori | coastal regions of New Zealand |
The species have similar physical features—they are small, generally playful, blunt-nosed dolphins—but they are found in distinct geographical locations.
A phylogenetic analysis by Шаблон:Harvnb indicated the two species traditionally assigned to the genus Lagenorhynchus, the hourglass dolphin L. cruciger and Peale's dolphin L. australis are actually phylogenetically nested among the species of Cephalorhynchus, and they suggest these two species should be transferred to the genus Cephalorhynchus. Some acoustic and morphological data support this arrangement, at least with respect to Peale's dolphin.
According to Шаблон:Harvnb, Peale's dolphin and the Cephalorhynchus species are the only dolphins that do not whistle (no acoustic data are available for the hourglass dolphin). Peale's dolphin also shares with several Cephalorhynchus species the possession of a distinct white "armpit" marking behind the pectoral fin.
References
Шаблон:Cetacea Шаблон:Odontoceti Шаблон:Taxonbar Шаблон:Authority control
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- Oceanic dolphins
- Cetacean genera
- Animals that use echolocation
- Taxa named by John Edward Gray
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