Mammalia (1997)
We collected testes from 62 male harbor porpoise (Phocoena phocoena) incidentally caught in gillnets of commercial fisheries in the Gulf of St-Lawrence, in June-July- August. In adults (≥4 years), both…
Non-invasive fecal steroid measurements for monitoring the reproductive status of a critically endangered Yangtze finless porpoises (Neophocaena asiaeorientalis asiaeorientalis)
Hao, Yu-jiang; Nabi, Ghulam; Deng, Xiao-Jun; Wang, Ding
Frontiers in Endocrinology (2019)
Yangtze finless porpoise (Neophocaena asiaeorientalis asiaeorientalis) is a critically endangered freshwater cetacean dwelling in the Yangtze River and its adjoining lakes. Affected mainly by the various anthropogenic activities in this…
The evolution of genital shape variation in female cetaceans
Orbach, Dara N.; Hedrick, Brandon; Würsig, Bernd; Mesnick, Sarah L.; Brennan, Patricia L. R.
Evolution (2017)
Male genital diversification is likely the result of sexual selection. Female genital diversification may also result from sexual selection, although it is less well studied and understood. Female genitalia are…
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…
Review on breeding biology of Yangtze finless porpoise (Neophocaena phocaenoides asiaeorientalis)
Hao, Yujiang; Wang, Ding; Zhang, Xianfeng
Acta Theriologica Sinica (2006)
There are three Neophocaena phocaenoides subspecies recognized in Chinese waters: South China Sea population, N. p. phocaenoides; Yellow Sea population, N. p. sunameri; and Yangtze population, N. p. asiaeorientalis. The…
About stranding and accidentally caught cetaceans in the Black Sea: Death reasons, feeding characteristics and pregnancy status
Bilgin, Sabri; Onay, Hatice; Köse, Ozay; Yeşilçiçek, Tuncay
Türk Tarım ve Doğa Bilimleri Dergisi (2018)
This study was carried out to determine stranding levels, dead reasons and some reproduction features and diet of the Black Sea’ cetacean species (harbour porpoise, Phocoena phocoena and common dolphin,…
Basin-scale distribution of harbour porpoises in the Baltic Sea provides basis for effective conservation actions
Carlén, Ida; Thomas, Len; Carlström, Julia; Amundin, Mats; Teilmann, Jonas; Tregenza, Nick; Tougaard, Jakob; Koblitz, Jens C.; Sveegaard, Signe; Wennerberg, Daniel; Loisa, Olli; Dähne, Michael; Brundiers, Katharina; Kosecka, Monika; Kyhn, Line Anker; Ljungqvist, Cinthia Tiberi; Pawliczka, Iwona; Koza, Radomil; Arciszewski, Bartlomiej; Galatius, Anders; Jabbusch, Martin; Laaksonlaita, Jussi; Niemi, Jussi; Lyytinen, Sami; Gallus, Anja; Benke, Harald; Blankett, Penina; Skóra, Krzysztof E.; Acevedo-Gutiérrez, Alejandro
Biological Conservation (2018)
Knowledge on spatial and seasonal distribution of species is crucial when designing protected areas and implementing management actions. The Baltic Proper harbour porpoise (Phocoena phocoena) population is critically endangered, and…
Testicular morphology and spermatogenesis in harbour porpoises (Phocoena phocoena)
Kesselring, T.; Viquerat, S.; IJsseldijk, L. L.; Langeheine, M.; Wohlsein, P.; Gröne, A.; Bergmann, M.; Siebert, U.; Brehm, R.
Theriogenology (2019)
Knowledge about reproductive parameters in male harbour porpoises such as testicular histology and germ cell maturation as well as seasonal changes in spermatogenesis is scarce. Thus, the aim of the…
Some remarks on gestation and birth in Cetacea and other aquatic mammals
Slijper, E. J.
Hvalrådets Skrifter: Scientific Results of Marine Biological Research (1956)
Excerpt unavailable - partial file available
Position at birth and possible effects on calf survival in finless porpoises (Neophocaena asiaeorientalis)
Deng, Xiaojun; Hao, Yujiang; Serres, Agathe; Wang, Kexiong; Wang, Ding
Aquatic Mammals (2019)
Odontocetes are usually reported giving birth to calves in breech position (fluke-first). Cephalic position (head-first) is less frequently observed and, therefore, is considered to be abnormal for the parturition. However,…