Report of the International Whaling Commission (1995)
This paper reviews available information on the population biology and incidental mortality of the vaquita, Phocoena sinus. A re-examination of previous records and the collection of new records reveals that…
Report of the International Whaling Commission (1995)
Sightings of 37 groups of vaquitas, Phocoena sinus, with an estimated total of 62 individuals, are reported from six major systematic surveys and four small boat surveys in the Gulf…
Conservation Biology (2000)
The world's most endangered marine cetacean, the vaquita (Phocoena sinus), continues to be caught in small-mesh gillnet fisheries throughout much of its range. We monitored fishing effort and incidental vaquita…
Aquatic Mammals (1996)
A comparison of the acoustic waveforms of three different species, Phocoena phocoena, Phocoena sinus and Neophocaena phocaenoides of the sub-family Phocoeninae is made with the species Phocoenoides dalli of the…
Aquatic Mammals (1991)
This report describes the first sounds recorded from the phocoenid porpoise, vaquita, (Phocoena sinus, Norris & McFarland, 1958). High-frequency recordings were obtained near free-ranging vaquita in the northern Gulf of…
Journal of Morphology (2010)
All extant members of Phocoenidae (porpoises) have been characterized as pedomorphic based on skeletal characters. To investigate the ontogenetic background for pedomorphosis and assess interspecific differences in ontogeny among phocoenids,…
The Anatomical Record (2013)
Evolution of endocranial anatomy in cetaceans is important from the perspective of echolocation ability, intelligence, social structure, and alternate pathways for circulation to the brain. Apart from the importance of…
Molecular Phylogenetics and Evolution (1995)
Portions of the cytochrome b gene and control region of the mitochondrial DNA molecule were sequenced to investigate systematic relationships among the six extant species of true porpoises, (Cetacea: Phocoenidae).…
Marine Mammal Sci (1999)
Uncertainty about the magnitude of various risks facing endangered species can paralyze conservation action. The vaquita is a naturally rare porpoise that has declined to the low hundreds of individuals…
Marine Mammal Sci (1994)
A total of 1,715 km of boat-based surveys and 1,521 km of aircraft-based surveys was conducted from 1986–1989 to assess the distribution, relative abundance, and ecological relationships of cetaceans in…