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A transmissible factor involved in hybrid sterility in drosophila melanogaster

✍ Scribed by D. S. Angus; J. A. Raisbeck

Book ID: 104630686
Publisher: Springer Netherlands
Year: 1979
Tongue: English
Weight: 521 KB
Volume: 50
Category: Article
ISSN: 0016-6707
DOI: 10.1007/bf00123282

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✦ Synopsis

Certain wild strains of Drosophila melanogaster when crossed with laboratory strains or other wild strains produce sterile progeny non-reciprocally. Australian D. melanogaster males from South Australia produce sterile progeny when mated with Canton S females. The sterility is transmissible and may be cured by rearing the pre-adult stages at low temperature. In the sterile flies gonad development is inhibited during the pupal stage. The testes fail to produce sperm bundles and in the ovaries the ovarioles remain immature. Sterile intrastrain progeny were produced by feeding dialysed, heat treated fractions of sterile adult homogenate to Canton S females. The data indicate that the transmissible agent is a heat stable molecule of low molecular weight. The effects of the sterility factor on the female reproductive system implicate a hormonal imbalance which reflects the nucleo-cytoplasmic imbalance of the interstrain hybrids.

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