Aquatic Mammals (1986)
(...) 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…
Investigations on cetacean sonar VII: Underwater sounds of Neophocaena phocaenoides of the Japanese coastal population
Kamminga, C.; Kataoka, T.; Engelsma, F. J.
Aquatic Mammals (1986)
This paper describes the sonar sounds from four captive Neophocaena, two males and two females, which were tape recorded and processed with regard to their behaviour in the time and…
Topographic distribution of sizes and density of ganglion cells in the retina of a porpoise, Phocoena phocoena
Mass, A. M.; Supin, A. Ya.; Severtsov, A. N.
Aquatic Mammals (1986)
(...) Dolphins are well-known for their developed hearing and echolocation systems. However, data on the organization of other sensory systems in these animals are limited. Namely, the organization of the…
Energy budget of a small cetacean, the harbour porpoise, Phocoena phocoena (L.)
Yasui, W. Y.; Gaskin, D. E.
Ophelia (1986)
The objective of this study was to assemble the components of an energy budget for the harbour porpoise in the western Bay of Fundy, Canada. The annual energetic requirements for…
Chromosome number of two color types of the Dall’s porpoise
Yabu, H.; Ogi, H.
Scientific Reports of the Whales Research Institute (1986)
(...) 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…
A review of human impact on small cetaceans
Northridge, S.; Pilleri, G.
Investigations on Cetacea (1986)
(...) 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…
Ontogenetic development of the nervus terminalis in toothed whales
Buhl, E. H.; Oelschläger, H. A.
Anatomy and Embryology (1986)
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…
Perinatal growth of delphinoids: Information from aquarium reared bottlenose dolphins and finless porpoises
Kasuya, T.; Tobayama, T.; Saiga, T.; Kataoka, T.
Scientific Reports of the Whales Research Institute (1986)
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…
Distribution of the vaquita, Phocoena sinus, in Mexican waters
Brownell, Robert L.
Marine Mammal Sci (1986)
(...) 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…
Factors affecting the recovery of Phocoena sinus, the vaquita or Gulf of California harbor porpoise
Barlow, J.
NMFS Administrative Report No. 86-37 (1986)
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…