نتایج جستجو برای: sex identification
تعداد نتایج: 612009 فیلتر نتایج به سال:
Unambiguous identification of the sex of live birds is critical in numerous areas of avian research, including studies of alternative reproductive tactics, sexratio manipulation, and conservation biology (e.g. van Rhijn 1973, Snyder and Snyder 1989, Stamps 1990). However, identification of sex can be problematic for researchers dealing with young birds or sexually monomorphic species. Technique...
the late sexual maturity in sturgeon and the absence of morphological differences between males and females makes sex discrimination difficult. identification of sex at an early life stage is of high interest in caviar production because it allows efficient selection of females. in this study, the genome of 10 mature male and 10 mature female specimens of persian sturgeon (acipenser persicus...
Numerous avian species are sexually monomorphic, especially nestlings, posing difficulties in determining their sex by morphological traits alone. Despite the difficulties, sex identification of birds is an essential part of ex situ conservation breeding programs for endangered species, and the sex of individuals is an integral component of information required for research concerning ecology, ...
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