Sperm mobility is known to be an important determinant of a male's sperm competitive ability. Although more debated, sperm length and its relation to sperm swimming ability has also been proposed to ...
Behavioral Ecology and Sociobiology, Vol. 52, No. 6 (Nov., 2002), pp. 485-495 (11 pages) The aim of this study was to examine effects of seasonal and social factors on male androgen excretion in a ...
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