Abundance decline in the narrow‐ridged finless porpoise population off the Pacific coast of eastern Japan

Shirakihara, Kunio; Nakahara, Fumio; Shinohara, Masanori; Shirakihara, Miki; Hiramatsu, Kazuhiko; Irie, Takahiro
Population Ecology (2019)

The narrow‐ridged finless porpoise Neophocaena asiaeorientalis is a small‐toothed whale with a coastal habitat and is sensitive to human activity. Aerial sighting surveys were conducted in 2012 to evaluate the…


Histological variation in blubber morphology of the endangered East Asian finless porpoise (Neophocaena asiaeorientalis sunameri) with ontogeny and reproductive states

Ji, Junhua; Nabi, Ghulam; Zeng, Xianyuan; Hao, Yujiang; Wang, Ding
Zoological Studies (2019)

The highly lipid-rich blubber in the hypodermis is a specialized structure that functions in thermoregulation, energy storage, buoyancy control, locomotion, and streamlining the body shape in marine mammals. The key…


Agonistic interactions and dominance relationships in three groups of captive odontocetes: Method of assessment and inter-species/group comparison

Serres, Agathe; Hao, Yujiang; Wang, Ding
Aquatic Mammals (2019)

Social group dynamics are known to impact odontocetes’ health and welfare in captivity. Social dominance and agonistic interactions that occur to establish and maintain these relationships might express themselves differently…