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IMPACT OF SOYBEAN PHENOLOGY ON VELVETBEAN CATERPILLAR (LEPIDOPTERA: NOCTUIDAE): OVIPOSITION, EGG HATCH, AND ADULT LONGEVITY1

Published online by Cambridge University Press:  31 May 2012

F. Moscardi ,
C. S. Barfield  and
G. E. Allen
F. Moscardi
Affiliation:
Department of Entomology and Nematology, University of Florida, Gainesville 32611
C. S. Barfield*
Affiliation:
Department of Entomology and Nematology, University of Florida, Gainesville 32611
G. E. Allen
Affiliation:
Department of Entomology and Nematology, University of Florida, Gainesville 32611
*
3From whom reprints should be requested.
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Abstract

Adult females of the velvetbean caterpillar, Anticarsia gemmatalis Hübner, from larvae fed on progressively aged soybean, Glycine max (L.), foliage had variable reproductive characteristics. Mean oviposition rates ranged from 963.4 to 515.0 eggs/female when larvae fed on early vegetative and senescent leaves, respectively. Average daily oviposition peaked ca. 4 days after adult emergence, decreased sharply to day 10, and remained at a low level until adult mortality. Mean daily egg hatch decreased with female age, but female longevity was not affected significantly.

Résumé

Les femelles adultes d’Anticarsia gemmatalis, Hübner provenant de larves nourries de feuillage de plus en plus âgé de soya, Glycine max (L.), ont montré des caractéristiques reproductives variables. Les femelles obtenues ont déposé en moyenne 963.4 et 515.0 oeufs lorsque les larves ont été nourries de feuillage jeune et senescent, respectivement. La ponte journalière moyenne a atteint un maximum environ 4 jours après l’émergence, pour ensuite diminuer rapidement jusqu’au jour 10, et demeurer à un faible niveau jusqu’à la mort des femelles. Le taux journalier moyen d’éclosion des oeufs a diminué avec l’âge des femelles, mais la longévité des femelles n’a pas été affectée significativement.

Type
Articles
Information
The Canadian Entomologist , Volume 113 , Issue 2 , February 1981 , pp. 113 - 119
Copyright
Copyright © Entomological Society of Canada 1981

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Footnotes

1

Approved for publication as Fla. Agric. Exp. Sta. Journal Series No. 2575.

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