SPERMATOGENESIS INDICES IN INBRED STRAINS DD/HE AND BALB/CLAC AND THEIR F1 RECIPROCAL CROSSES
Abstract
We have shown that among 13 inbred mice strains males the DD/He strain has the lowest proportion of mobile sperm and moderate sperm count and proportion of abnormal sperm heads. Males of the BALB/cLac strain have the highest proportion of mobile sperm and abnormal sperm heads, but a moderate sperm count. It is known that Y chromosome genes are important for spermatogenesis. Thus, Y chromosome mutations may be responsible for interstrain differences in spermatogenic parameters. Reciprocal cross can be a useful tool to examine the effect of the Y chromosome on sperm count and the proportions of mobile and morphologically abnormal sperm. The sperm count in DD/He males is higher than in BALB/cLac ones, but both crosses show equal values, exceeding those in the paternal strains. Males of cross BALB/cLac × DD/He have a higher proportion of mobile sperm than males of DD/He × BALB/cLac. The greatest proportion of abnormal sperm heads has been recorded in the BALB/cLac strain. The proportions of abnormal sperm heads in the hybrids were small but little different from each other.
About the Authors
M. A. Kleshchev
Institute of Cytology and Genetics SB RAS, Novosibirsk, Russia,
Russian Federation
Russian Federation
L. V. Osadchuk
Institute of Cytology and Genetics SB RAS, Novosibirsk, Russia,
Russian Federation
Russian Federation
A. V. Osadchuk
Institute of Cytology and Genetics SB RAS, Novosibirsk, Russia,
Russian Federation
Russian Federation
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