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Le potentiel reproducteur des adultes de drosophila melanogaster: Variations génétiques en réponse aux régimes lumineux

The reproductive potential of D. melanogaster adults: genetic variations in the responses to environmental light regimes

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Abstract

The number of eggs oviposited, the egg hatchability and the number of offspring produced were measured at 25°C under three light regimes: LL, LD 12 : 12, DD. Two wild genotypes were studied at the same time: a French strain (Colmar) and a tropical African genotype obtained by crossing two strains from Brazzaville and Libreville. These data were compared to those previously obtained with F1 heterozygotes between two inbred laboratory strains (vestigial x Champetières, Allemand et al., 1976).

Significant differences between strains were observed for all the characters considered. Moreover, the responses to the light regimes changed with the genotypes and the characters studied (see Table 2 and Fig. 3) thus demonstrating their genetic independence. In the cases where the treatments had a significant effect, the maximum total egg production was observed in darkness while the maximum egg-hatchability took place under LD 12 : 12. Possible genetic variation within species should always be taken into account in ecophysiological studies.

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  1. Laboratoire d'Entomologie expérimentale et de Génétique (associé au C.N.R.S.), 43 boulevard du 11 novembre 1918, F. 69621, Villeurbanne, France

    R. Allemand

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  1. R. Allemand
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Allemand, R. Le potentiel reproducteur des adultes de drosophila melanogaster: Variations génétiques en réponse aux régimes lumineux. Genetica 47, 1–7 (1977). https://doi.org/10.1007/BF00122433

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