Duration of pairing and use of allosperm in Biomphalaria glabrata (Gastropoda: Planorbidae)

Memórias do Instituto Oswaldo Cruz

Marc Vianey-liaud²  Henri Nassi¹  Felix Lancastre¹  Jacques Dupouy¹ 

[1] ,Université des Sciences et Techniques du Languedoc Instituto des Sciences de l'Evolution Laboratoire de Génétique,France

关键词: Biomphalaria;    pigmentation;    albinism;    selfing;    crossing;    allosperm;    Biomphalaria;    pigmentação;    albinismo;    atofecundação;    fecundação cruzada;    aloesperma;   

DOI  :  10.1590/S0074-02761989000100008

来源: SciELO

【 摘 要 】

Virgin homozygous black pigmented and albino Biomphalaria glabrata are paired during a period varying from 1 to 20 days. The rate of cross-fertilized parents is statistically similar for the various lengths of pairing. As a whole, nearly 80% of the albino snails produce a pigmented progeny. This production begins as soon as the snails are mated and continues after their separation. To measure the actual use of the allosperm, its use during the postmating period must be added to the length of mating. So, it appears that the real use of the allosperm is statistically constant (mean slightly inferior to 8 weeks) and not related to the length of the previous pairing.

【 授权许可】

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