Relationship between semen quality and level of heterozygosity on the model of endangered population of Western capercaillie

Abstract

Sperm quality is a very important population survival factor, which can be influenced by the level of male's genetic diversity and can influence reproduction effectiveness, what may be crucial in terms of decision about local, endangered population protection plans. Thus, we analysed if heterozygosity and age influence sperm quality in the engendered European capercaillie (Tetrao urogallus) population in Polish breeding stations. Obtained results showed no relationship between normal sperm morphology and heterozygosity, as well as age and sperm morphology, but it was shown that both high and low level of heterozygosity significantly influenced the percentage of abnormal sperm. Thus, heterozygosity level can be a useful tool for population reproduction potential prediction, however, further research on how those abnormalities influence fertilization process are needed.

Keywords: capercaillie; captive breeding; heterozygosity; species protection; sperm quality.