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Original source: http://tosaweb.ncsd.k12.wy.us/faculty/cjourgensen/resources.html
Author: Alessio Marrucci
Permission: GNU Free Documentation License
Vaquita
Order : Cetacea
Suborder : Odontoceti
Family : Phocoenidae
Species : Phocoena sinus
One could see a Vaquita alone or with others. Just like other phocoenids, a Vaquita utilizes sonar to communicate and to move about. A Vaquita could be found at the Gulf of California in the undeep areas. They live in warm aquatic habitat. The Vaquita can stand the changes in temperature of the Gulf of California, which range from 14 to 36 degrees celsius. Their diet mainly consists of bony fish and squids.
They reach sexual maturity around 3 to 6 years, and they give birth seasonally. Gestation time frame is 10.6 months. The males engage in mating with as many of their females as they could. Ovulation of the female does not happen annually, thus, giving birth every year is not possible. At present, they are now categorized as critically endangered, just hundreds are still alive. These porpoises get entangled from fishing equipment, like the nets for shrimps. These sea animals are also constantly at risk due to a case of mistaken identity, they are very similar to the size of a seabass-like called Totoabo, and the hunting for the latter remains present. As such, both kinds of animal are under threat.
The Cochito, gulf of california harbour porpoise, gulf of california porpoise, gulf porpoise, vaquita is listed as Critically Endangered (CR), facing an extremely high risk of extinction in the wild, on the IUCN Red List of Threatened Species
Countries
Mexico
Facts about the vaquita
"Up to one-sixth of the remaining population of vaquitas are known to die annually in gillnets set legally for sharks, rays, mackerels, chanos or in gillnets set sometimes legally, sometimes illegally for an endangered fish called totoaba.
Description: The Vaquita is one of the smallest of all cetaceans, and is rarely viewed in the wild.
In particular, vaquitas are caught in gill-nets set to catch totoaba; although data are "sketchy", one study, which attempted to calculate the total number of porpoises killed by fisheries by combining figures of official observers with interviews with fishermen, produced an annual mortality rate of between 39 and 84 vaquitas.
The Influence of Man: Vaquitas are taken by accident in gillnets set for sharks and rays.
The Vaquita is one of the smallest cetaceans and is almost extinct.
Vaquitas are not very active, swimming slowly, and have never been seen breaching.
The word "vaquita" is Spanish for little cow. (Full text)
The vaquita (Phocoena sinus) is believed to be the most recently derived species in the genus, and appears to have been a decendant of the modern day Burmeister's porpoise that "re-colonised" the Northern Hemisphere during the cooler periods of the late Pleistocene and was subsequently "trapped" in the upper Sea of Cortez as tropical waters once again warmed and the last (Full text)
Threats to the Species The greatest threat to the remaining vaquita is incidental mortality in fishing gear. (Full text)
The vaquita (Phocoena sinus) is one of the world's rarest small cetaceans, second only to the baiji (Lipotes (Full text)
) The vaquita is the smallest living cetacean, weighing up to 55 kg (120 lb). (Full text)
The Vaquita (Phocoena sinus) is a rare species of porpoise . (Full text)
</table> The Vaquita (Phocoena sinus) is a rare species of porpoise. (Full text)
Vaquitas are not intentionally hunted but at least 25 a year are entangled and die in fishing nets set for other species. (Full text)
Phocoena sinus is listed in Appendices I & II of Cites (see "links"). (Full text)
vaquita is listed in the IUCN Red List (Full text)
World Range & HabitatThe Vaquita, Phocoena sinus, is found only in the northern area of the Gulf of California in coastal, shallow water. (Full text)
Box 271, La Jolla, CA 92038 USA The abundance of the only population of vaquitas, Gulf of California harbor porpoise (_Phocoena sinus_), is estimated from four surveys conducted in Mexico between 1986 and 1993, using a variety of methods. (Full text)
Alarming increase in marine vaquita deaths in past six months 8 Jun 2004 Six vaquitas are reported to have died in fishing nets over the past six months, further threatening the survival of the world's smallest and most critically endangered porpoise. (Full text)
But getting information about the decline of the vaquita is more difficult. (Full text)
The vaquita is one of the world’s most endangered cetaceans. (Full text)
Vaquitas are never observed in pairs or groups. (Full text)
The Vaquita is a cetacean (Full text)
The vaquita is one of the most endangered species of whale. (Full text)
Vaquita Vaquita Scientific Classification Kingdom: Animalia Phylum: Chordata Class: Mammalia Order: Cetacea Suborder: Odontoceti Family: Phocoenidae Genus: Phocoena Species: sinus Binomial name Phocoena sinus The Vaquita (Phocoena sinus) is a rare species of porpoise . (Full text)
Vaquitas are disappearing because they are being trapped and drowned inadvertently in gillnets set for mackerels, sharks, rays and other species. (Full text)
Like other porpoises, vaquitas are stocky, with a blunt head and no beak. (Full text)