Homosexual and masturbating behaviors in a group of captive Yangtze finless porpoises (Neophocaena asiaeorientalis asiaeorientalis)

ZHANG, Changqun; ZHENG, Yang; PLATTO, Sara; HAO, Yujiang; WANG, Ding
Acta Theriologica Sinica (2015)

Similar to terrestrial mammals, male-female sexual behavior is significant for the survival and continuation of certain cetacean species. However, non-reproductive mating behaviors, i.e. homosexual behaviors and masturbation, are widespread in…


Abundance estimates of Pacific white-sided dolphin, northern right whale dolphin, Dall’s porpoise and northern fur seal in the north Pacific, 1987-1990

Buckland, S.T.; Cattanach, K.L.; Hobbs, R.C.
Bulletin of the International North Pacific Fisheries Commission (1993)

Line transect analysis was applied to the 1987-1990 North Pacific marine mammal sightings survey data, with a regression adjustment for size-biased sampling of schools. Abundance of Pacific white-sided dolphins is…


Investigations on cetacean sonar XI: Intrinsic comparison of the wave shapes of some members of the Phocoenidae family

Kamminga, C.; Cohen Stuart, A.; Silber, G. K.
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…


Evaluation of immune and stress status in harbour porpoises (Phocoena phocoena): can hormones and mRNA expression levels serve as indicators to assess stress?

Müller, Sabine; Lehnert, Kristina; Seibel, Henrike; Driver, Jörg; Ronnenberg, Katrin; Teilmann, Jonas; van Elk, Cornelius; Kristensen, Jakob; Everaarts, Eligius; Siebert, Ursula
BMC Vet Res (2013)

The harbour porpoise is exposed to increasing pressure caused by anthropogenic activities in its marine environment. Numerous offshore wind farms are planned or under construction in the North and Baltic…


Morphology and variation in porpoise (Cetacea: Phocoenidae) cranial endocasts

Racicot, Rachel A.; Colbert, Matthew W.
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…


Clicking in a Killer Whale Habitat: Narrow-Band, High-Frequency Biosonar Clicks of Harbour Porpoise (Phocoena phocoena) and Dall’s Porpoise (Phocoenoides dalli)

Kyhn, Line A.; Tougaard, Jakob; Beedholm, Kristian; Jensen, Frants H.; Ashe, Erin; Williams, Rob; Madsen, Peter T.
PLoS ONE (2013)

Odontocetes produce a range of different echolocation clicks but four groups in different families have converged on producing the same stereotyped narrow band high frequency (NBHF) click. In microchiropteran bats,…