(...) Although various sensory mechanisms are present in cetaceans, special navigational problems occur when animals are in a pelagic environment which can minimize available cues. Dawbin (1966) has observed that…
Some growth parameters of the western North Pacific dalli-type Dall's porpoise were estimated from 167 specimens taken with hand-held harpoons on two cruises and compared with data obtained previously from…
(...) Makino (1948) studied chromosomes of a male P. dalli using traditional sectioning of testis tissue. Since it was generally accepted in those days that the two color morphs represent…
(...) This document attempts to gather together as much information as is available on the extent of current killings of small cetaceans throughout the world, and also to highlight some…
For the first time in cetaceans, the development of the terminalis system and its continuity between the olfactory placode and the telencephalon has been demonstrated by light microscopy. In the…
The early postnatal growth of bottlenose dolphins and finless porpoises was studied using 97 body length records of 61 individuals born in aquariums. The growth rates observed were similar to…
(...) In the original description of the vaquita, Phocoena sinus, Norris and McFarland (1958) gave the range as “certainly occurring in the upper Gulf of California and probably extending south…
The vaquita (Phocoena sinus) is a small porpoise found only in the northern Gulf of California. This species may have been subject to high levels of mortality in the gill-net…
(...) During August and September 1986 a cooperative research effort was organized between a consultant of the IUCN/UNEP Burmeister's Porpoise Project (KVW) and the head of the marine mammal and…
(...) Spondolytis deformans, a pathological deformation of the vertebral column, has so far been found in 41 cases in 26 recent and extinct cetacean species, among them the harbour porpoise…