Reproductive Pattern of the Sun Bear (Helarctos malayanus) in Sarawak, Malaysia

Journal of Veterinary Medical Science

Masatsugu SUZUKI¹  Noriyuki OHTAISHI¹  Manabu ONUMA² 

[1] Laboratory of Wildlife Biology, Graduate School of Veterinary Medicine, Hokkaido University;Semenggoh Wildlife Rehabilitation Center, Sarawak Forestry Department Wisma Sumber Alam

关键词: Helarctos malayanus;    ovulation;    pseudopregnancy;    seasonality;    sun bear;   

DOI  :  10.1292/jvms.63.293

学科分类：兽医学

来源: Japanese Society of Veterinary Science

【 摘 要 】

References(29)Cited-By(14)Fecal progesterone assays were conducted in 3 captive female sun bears (Helarctos malayanus) segregated from males to characterize the species-specific reproductive pattern in their original distribution area in Sarawak, Malaysia. Peaks of fecal progesterone concentrations were observed once annually, and lactation was observed after increasing progesterone concentrations in all females without mating stimulus. These results suggest that sun bears in Sarawak, Malaysia, may have a seasonal reproductive pattern and ovulation was noted to occur spontaneously, followed by pseudopregnancy.

【 授权许可】

Unknown