Non-reciprocal gonadal dysgenesis in hybrids of the chironomid midge Chironomus thummi

In male hybrids of the cross Chironomus thummi thummi (stock Hl) ♀♀ x Ch. th. piger (stock E) ♂♂, but not the reciprocal cross, rudimentary testes develop at a growth temperature of 21 ° C. Within the dysgenic testes of these hybrids a number of abnormalities are observed which are restricted to the germ line. Approximately 60% of the hybrid males show… CONTINUE READING