Geographical variations of postcranial skeleton among the Yangtze, Yellow Sea and South China Sea populations of the finless porpoise, Neophocaena phocaenoides, in Chinese waters were studied with t-test, covariance analysis…
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…
The population of finless porpoises (Neophocaena phocaenoides) that inhabits China’s Yangtze River is unique. All other known populations of the species are distributed principally in marine waters. This population is…
(...) Neophocaena phocaenoides is the only member of the family Phocoenidae without a dorsal fin (Fig. I ). In its place is a low, geographically-variable dorsal ridge (sometimes inappropriately called…
Quantitative study of behavior should be preceded by precise description and definition of behavior. Therefore, an ethogram, which includes the comprehensive descriptions of the characteristic behavior of a species, should…
Two species of freshwater dolphin are known to have existed in the Yangtse River, China, for over two thousand years. One is a white form, the Baiji (Lipotes vexllifer), the…
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…
This paper reports the population status of the endangered Chinese River dolphin - Lipotes vexillifer, the factors causing the population decline of Lipotes and protective measures adopted in recent years,…
We have 189 specimens available for this work. One-hundred and sixty-seven specimens from the Yangtze, Yellow Sea and South China Sea populations were aged and used in studying the growth…
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