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Published on: February 6, 2018
Synaptonemal Complex Analysis of Spermatocytes in Hybrids of Silver Fox and Blue Fox
I Gustavsson1, M Świtoński2, K Larsson3
1Departments of Animal Breeding and Genetics.
Abstract:
Investigations of male meiosis in silver fox x blue fox hybrids have revealed meiotic arrest at the first prophase stage. Synaptonemal complex analysis using light and electron microscopy demonstrated the occurrence of multivalents, bivalentlike structures, and unpaired axes. We conclude that the sterility of male hybrid foxes probably is due to pairing problems of chromosomes caused by extensive karyotypical differences of the two species, resulting in unpaired chromosomes, chromosome segments, and broken chromosomes.
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