Marine Mammal Sci (1992)
Dall's porpoises from the Sea of Japan population taken by a dolphin fishery vessel were examined. Estimated body lengths at sexual maturity were similar to those for the truei-type population…
Observations on the distribution and behavior of Dall’s porpoise (Phocoenoides dalli) in Monterey Bay, California
Jefferson, T.
Aquatic Mammals (1991)
A study of Dall's porpoise distribution and behaviour between September 1986 and February 1989 confirmed the year-round presence of these animals in Monterey Bay, California. Dall's porpoises in the Bay…
Studies on echolocation of porpoises taken in salmon gillnet fisheries
Hatakeyama, Yoshimi; Soeda, Hideo
Sensory Abilities of Cetaceans (1990)
(...)In the Bering Sea, marine mammals, particularly Dall's porpoises, Phocoenoides dalli, get incidentally entangled in gillnets of the Japanese mothership salmon fishery. The maximum total number of Dall's porpoises to…
Photo-identification techniques applied to Dall’s porpoise (Phocoenoides dalli) in Puget Sound, Washington
Miller, E. J.
Report of the International Whaling Commission (1990)
Dorsal fin photographs of Dall's porpoise, Phocoenoides dalli, were taken in northern Puget Sound, Washington in order to assess the feasibility of using photo-identification techniques in studies of this species.…
Sexual dimorphism and development of external features in Dall’s porpoise Phocoenoides dalli
Jefferson, T. A.
Fishery Bulletin (1990)
Examination of 95 Dall's porpoise specimens incidentally caught in gill nets, and 4 collected as beach strandings, indicate significant sexual dimorphism and developmental variation in several aspects of external morphology…
Sexual dimorphism and development of external features in Dall’s porpoise (Phocoenoides dalli)
Jefferson, T.A.
Master's Thesis - San Jose State University (1989)
Examination of 95 Dall's porpoise specimens incidentally caught in gillnets, and four collected as beach strandings, indicate that there is significant sexual dimorphism and developmental variation in several aspects of…
Calving seasonality of Dall’s porpoise in the eastern north Pacific
Jefferson, Thomas A.
Marine Mammal Sci (1989)
(...) Four newborn Dall’s porpoises were examined by the author during July of 1987 and 1988. All had muted color patterns, and some evidence of umbilical remnants, fetal folds, and…
Use of organochlorines as chemical tracers in determining some reproductive parameters in Dalli-type Dall’s porpoise Phocoenoides dalli
Subramanian, AN.; Tanabe, Shinsuke; Tatsukawa, Ryo
Marine Environmental Research (1988)
Persistent organochlorines (PCBs and p,p′-DDE) in the bodies of dalli- and truei-type Dall's porpoises (Phocoenoides dalli) from the Bering Sea and the northwestern North Pacific were used as chemical tracers…
Distribution and abundance of Dall’s porpoises off Japan
Miyashita, T.; Kasuya, T.
Scientific Reports of the Whales Research Institute (1988)
Results of nine whale sighting cruises in the Japanese coastal waters in 1983 through 1986 and some additional cruises provided following conclusion. Dall's porpoises inhabit waters below 24°C, but the…
Phocoenoides dalli
Jefferson, Thomas A.
Mammalian Species (1988)
(...) Order Cetacea, Suborder Odontoceti, Family Phocoenidae. The family contains four extant genera: Phocoena, Australophocaena, Neophocaena, and Phocoenoides (Barnes, 1985). Barnes (1984, 1985) has proposed two subfamilies within the Phocoenidae.…