Aquatic Mammals (2009)
Heterochrony, the change in timing of developmental processes, is thought to be a key process shaping the numerous limb morphologies of tetrapods. Through a delayed offset in digit development, all…
Heterochrony, the change in timing of developmental processes, is thought to be a key process shaping the numerous limb morphologies of tetrapods. Through a delayed offset in digit development, all…
A highly unusual sighting is described of a group of ca. 150 Burmeister’s porpoises near Isla Guañape Sur (08°28’04”S, 78°58’16.7”W) off the north-central Peruvian coast, in September 2001. The fishermen…
Published and new fresh and museum specimens of Burmeister's porpoise, Phocoena spinipinnis, collected prior to the recent research in Peru, Chile and Argentina, are listed and described. Distribution is from…
Although thought to be fairly common off the western and southeastern coasts of South America, Burmeister's porpoise (Phocoena spinipinnis) has seldom been seen alive by cetacean researchers. Published sightings are…
Eight fresh specimens of Burmeister's porpoise caught in gillnets in the Necochea area (Buenos Aires Province) were studied for external morphometrics, age, basic reproductive data, organochlorine pollutant levels and parasites.…
Burmeister's porpoise (Phocoena spinipinnis), one of the most common small cetaceans in Peruvian waters, suffers the second highest fishing mortality. Biological data obtained from porpoises caught in gillnets off Peru…
(...) Phocoena spinipinnis may be distinguished externally from all other members of the genus by the slightly convexed anterior and posterior borders and the rounded blunt tip of the dorsal…
(...) In 1872, Louis Agassiz undertook a voyage around the continent of South America on the ship Hassler for the purpose of zoological investigation. No detailed account of this expedition…
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,…
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…