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Influence de l'Accouplement Différé sur la Fécondité, le Sex-Ratio, l'Oviposition, la Formation du Bouclier et le Comportement Chez Quatre Espèces de Cochenilles Diaspines [Hom., Diaspididae]

Influence de l'Accouplement Différé sur la Fécondité, le Sex-Ratio, l'Oviposition, la... Summary The consequences of a long-continued virginity have been studied in Aonidiella aurantii, Lepidosaphes beckii, Parlatoria zizyphus and P. pergandei. In A. aurantii and L. beckii, there is none significant difference, with regard to the fecundity, between the reference test and the isolated females. In P. zizyphus, just as in P. pergandei, the fecundity decreases in a significant manner on and after 10 days of mating delay. The sex-ratio is strongly increased in favour of the males in all species, and in a manner all the more significant as the mating is delayed. The oviposition duration is significantly shortened in all species. For those whose fecundity is unchanged, the rythm of the larval coming out is strongly increased at his beginning (heavy initial coming out). In P. zizyphus, the initial laying is lightly increased, the laying rythm remaining comparable with the reference's one; in P. pergandei, this emergence rythm is lighter than in the reference. With regard to the shields, these of A. aurantii, L. beckii and P. pergandei have undergone some modifications (rigidity, appearance). Furthermore, many females of A. aurantii and P. pergandei have leaved the protection of their shield. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Annales de la Société entomologique de France (N S ) Taylor & Francis

Influence de l'Accouplement Différé sur la Fécondité, le Sex-Ratio, l'Oviposition, la Formation du Bouclier et le Comportement Chez Quatre Espèces de Cochenilles Diaspines [Hom., Diaspididae]

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Publisher
Taylor & Francis
Copyright
© 1982 Société entomologique de France
ISSN
2168-6351
eISSN
0037-9271
DOI
10.1080/21686351.1982.12278323
Publisher site
See Article on Publisher Site

Abstract

Summary The consequences of a long-continued virginity have been studied in Aonidiella aurantii, Lepidosaphes beckii, Parlatoria zizyphus and P. pergandei. In A. aurantii and L. beckii, there is none significant difference, with regard to the fecundity, between the reference test and the isolated females. In P. zizyphus, just as in P. pergandei, the fecundity decreases in a significant manner on and after 10 days of mating delay. The sex-ratio is strongly increased in favour of the males in all species, and in a manner all the more significant as the mating is delayed. The oviposition duration is significantly shortened in all species. For those whose fecundity is unchanged, the rythm of the larval coming out is strongly increased at his beginning (heavy initial coming out). In P. zizyphus, the initial laying is lightly increased, the laying rythm remaining comparable with the reference's one; in P. pergandei, this emergence rythm is lighter than in the reference. With regard to the shields, these of A. aurantii, L. beckii and P. pergandei have undergone some modifications (rigidity, appearance). Furthermore, many females of A. aurantii and P. pergandei have leaved the protection of their shield.

Journal

Annales de la Société entomologique de France (N S ) – Taylor & Francis

Published: Jul 31, 1982

Keywords: Homoptera; Diaspididae; Aonidiella; Lepidosaphes; Parlatoria; accouplement différé; ponte; fécondité; sex-ratio; bouclier; comportement.

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