Grampus griseus
– Data Deficient
Taxonomy
|
Kingdom:
|
ANIMALIA
|
|
Phylum:
|
CHORDATA
|
|
Class:
|
MAMMALIA
|
|
Order:
|
CETACEA
|
|
Family:
|
DELPHINIDAE
|
|
Scientific Name:
|
Grampus griseus
|
|
Species Authority:
|
(G. Cuvier, 1812)
|
|
Common Name/s:
|
GREY DOLPHIN (Eng)
RISSO'S DOLPHIN (Eng)
DAUPHIN DE RISSO (Fre)
GRAMPUS (Fre)
DELFÍN DE RISSO (Spa)
FABO CALDERÓN (Spa)
|
Assessment Information
|
Red List Category & Criteria:
|
DD ver 2.3 (1994)
|
|
Year Assessed:
|
1996
|
|
Annotations:
|
Needs updating
|
|
Assessor/s:
|
Cetacean Specialist Group
|
|
Justification:
|
Extract from Reeves et al. (2003, p. 40): "Risso’s Dolphins are abundant in tropical and temperate latitudes throughout the world’s oceans (Kruse et al. 1999). They prey almost exclusively on squid. A recent study of habitat preferences in the northern Gulf of Mexico indicated that Risso’s Dolphins occur mainly on steep sections of the upper continental slope (Baumgartner 1997). There are an estimated 29,000 off the eastern United States (Waring et al. 2001), 2700 in the northern Gulf of Mexico (Waring et al. 2001), 16,500 off the western United States (Carretta et al. 2001), 83,000 in three areas of concentrated occurrence off Japan (Miyashita 1993), and 175,000 in the eastern tropical Pacific (Wade and Gerrodette 1993).
Risso’s Dolphins are hunted regularly in Japan, with reported catches in recent years ranging from about 250–500 (see tables of catches of small cetaceans appended to annual reports of the Sub-committee on Small Cetaceans of the IWC’s Scientific Committee, published in the annual supplement of the Journal of Cetacean Research and Management). They are also a major target of artisanal hunting, and taken often in gillnets and other fishing gear in Sri Lanka and the Philippines. Populations in these areas with large kills have not been properly assessed."
|
|
History:
|
| 1994 | - | Insufficiently Known (Groombridge 1994) |
|
Geographic Range
|
Countries:
|
Native:
Albania; Anguilla; Antigua and Barbuda; Argentina; Aruba; Australia; Bahamas; Bangladesh; Barbados; Belgium; Bermuda; Bosnia and Herzegovina; Brunei Darussalam; Cambodia; Canada; Cayman Islands; Chile; China; Costa Rica; Croatia; Cuba; Denmark; Dominica; Dominican Republic; Estonia; Finland; France; Germany; Greece; Grenada; Haiti; India; Indonesia; Iran, Islamic Republic of; Iraq; Ireland; Italy; Jamaica; Japan; Jordan; Kenya; Korea, Republic of; Kuwait; Lebanon; Lithuania; Malaysia; Maldives; Malta; Mexico; Montenegro; Myanmar; Namibia; Netherlands; Netherlands Antilles; New Caledonia; New Zealand; Norway; Oman; Pakistan; Palau; Papua New Guinea; Philippines; Poland; Portugal; Puerto Rico; Qatar; Russian Federation; Saint Kitts and Nevis; Saint Lucia; Saint Pierre and Miquelon; Saint Vincent and the Grenadines; Saudi Arabia; Seychelles; Singapore; Slovenia; Solomon Islands; South Africa; Spain; Sri Lanka; Sweden; Syrian Arab Republic; Taiwan, Province of China; Tanzania, United Republic of; Thailand; Timor-Leste; Trinidad and Tobago; Turkey; United Arab Emirates; United Kingdom; United States; United States Minor Outlying Islands; Viet Nam; Virgin Islands, British; Virgin Islands, U.S.; Yemen
|
|
FAO Marine Fishing Areas:
|
Native:
Atlantic-eastern central; Atlantic-northeast; Atlantic-northwest; Atlantic-southeast; Atlantic-southwest; Atlantic-western central; Indian Ocean-eastern; Indian Ocean-western; Pacific-eastern central; Pacific-northeast; Pacific-northwest; Pacific-southeast; Pacific-southwest; Pacific-western central
|
Habitat and Ecology
