Geschlechtschromosomen und Geschlechtsbestimmung bei einigen Calliphorinen (Calliphoridae, Diptera)

C-banding and FISH in chromosomes of the blow flies Chrysomya megacephala and Chrysomya putoria (Diptera, Calliphoridae)

“…Among the Calliphoridae studied to date, including most Chrysomya species, the sex chromosomes are medium length, heterochromatic chromosomes, and sex is probably controlled by a determinant male factor present in the Y chromosome (Üllerich 1963(Üllerich , 1976(Üllerich , Bedo 1991. Variations in sex chromosome size were reported by Boyes and Shewell (1975) for C. putoria and we also observed variations in the occurrence of a secondary constriction in X chromosomes.…”

Male crossing over and genetic sexing systems in the Australian sheep blowfly Lucilia cuprina

“…This is most frequently accomplished by artificially linking appropriate mutations with sex using rearrangements between sex-determining chromosomes and other chromosomes, although other sex-determining mechanisms can be exploited (reviewed by Whitten & Foster, 1975). Insects with Y-mediated sex determination, such as most higher Diptera (Boyes, 1967;Ullerich, 1963) are especially amenable to genetic sexing. Genetic sexing may assist in rearing economically important insects such as silkworms (Tazima, 1964), or in genetic pest control strategies involving release of sterilized or genetically altered males.…”

The effect of different proportions of males and females over the Chrysomya albiceps (Wiedemann 1819) (Diptera, Calliphoridae) biotic potential and longevity under laboratory conditions

“…albiceps is a bisexual species, however the females reproduce themselves monogenically. The males cannot influence the sex of their offspring, and the regulation of the percentage of the sexes is effected at the populational level (Ullerich 1963). observed that this species besides being bisexual and reproducing themselves monogenically, may originate, in a same generation, males as well as females.…”