To clarify the effect of paternal life-history form and egg size on offspring life-history traits (e.g., growth and maturation) in masu salmon (Oncorhynchus masou), we studied an artificially fertilized population for 3 years using mark-recapture ...
Toshiaki Yamamoto   Shigeru Kitanishi   Masato Sato   Masaru Yagisawa   Daisuke Kishi   
Ecology of Freshwater Fish 30(3) 296-305 2021年7月
Offspring growth is greatly influenced by both the maternal and paternal genotypes. However, although the effects of maternal genotype on offspring growth are recognised widely, ecological studies of the paternal genotype have not focused on the l...
Toshiaki Yamamoto   Shigeru Kitanishi   Neil B. Metcalfe   
Evolutionary Ecology 35(2) 253-269 2021年4月
Offspring traits are influenced by complex interactions among parent genotypes and phenotypes. However, ecological studies of these effects have tended to focus on one of either maternal or paternal influences. In this study, we investigated the e...
Despite being well-researched in several other bear species, the act of infanticide has yet to be documented in Asiatic black bears (Ursus thibetanus). We captured video footage of an apparent infanticide event in May 2016 using sensor cameras pla...
The Journal of veterinary medical science 2020年2月 [査読有り]
We analyzed the genotypes of three pregnant females and their litters to investigate the phenomenon of multiple paternity in wild raccoon dogs (Nyctereutes procyonoides) using 17 microsatellite markers. If a female has mated with only one male dur...