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AGE, FECUNDITY, WEIGHT, AND THE INTRINSIC RATE OF INCREASE OF THE LUPINE APHID MACROSIPHUM ALBIFRONS (HOMOPTERA: APHIDIDAE)

Published online by Cambridge University Press:  31 May 2012

B. D. Frazer  and
B. Gill
B. D. Frazer
Affiliation:
Agriculture Canada, Research Station, Vancouver, British Columbia V6T 1X2
B. Gill
Affiliation:
Agriculture Canada, Research Station, Vancouver, British Columbia V6T 1X2
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Abstract

The fecundity, survivorship, and rate of development of the lupine aphid Macrosiphum albifrons Essig were determined and summarized into life tables from which the intrinsic rate of increase was computed. The life tables, using a time scale in days, were converted to a variable life table model using a physiological time scale based on an estimated thermal threshold of development of 3.59° (± 0.587°). A method of determining age and fecundity of adult aphids was developed from weight and embryo content. The use of intrinsic rate of increase and of the method of aging in field population dynamics are discussed.

Résumé

La fécondité, la longévité et le taux de croissance du puceron du lupin Macrosiphum albifrons Essig ont été déterminés et résumés en tableaux de cycle biologique à partir desquels on a calculé le taux intrinsèque de multiplication. Les tableaux qui utilisent une échelle de temps en jours ont été convertis en un modèle de cycle biologique variable au moyen d’une échelle physiologique basée sur le seuil thermique estimatif de développement de 3,59° (± 0,587°). On a mis au point une méthode de détermination de l’âge et de la fécondité des pucerons adultes à partir du poids et du contenu de l’embryon. L’auteur examine l’utilisation du taux intrinsèque de multiplication et de la méthode de détermination de l’âge dans une perspective de dynamique des populations.

Type
Articles
Information
The Canadian Entomologist , Volume 113 , Issue 8 , August 1981 , pp. 739 - 745
Copyright
Copyright © Entomological Society of Canada 1981

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