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Variability in oviposition in four strains of Callosobruchus rhodesianus (Pic) from different geographical areas of Zimbabwe

Published online by Cambridge University Press:  19 September 2011

D.P. Giga ,
I. Kadzere  and
J. Canhão
D.P. Giga
Affiliation:
University of Zimbabwe, Department of Crop Science, P.O. Box MP 167, Harare, Zimbabwe
I. Kadzere
Affiliation:
University of Zimbabwe, Department of Crop Science, P.O. Box MP 167, Harare, Zimbabwe
J. Canhão
Affiliation:
University of Zimbabwe, Department of Crop Science, P.O. Box MP 167, Harare, Zimbabwe
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Abstract

The fecundity and duration of oviposition in three strains of Callosobruchus rhodesianus from the highveld, middleveld and lowveld regions of Zimbabwe and a laboratory strain were recorded on cowpea and greengram. Within-legume variability for both parameters was high among the four strains. The lowveld strain was the least fecund and had the longest duration of oviposition. The middleveld strain showed the highest fecundity on cowpea, but did not differ significantly from the other three strains on greengram.

Résumé

La fécondité et la durée de la ponte chez trois biotypes de Callosobruchus rhodesianus des régions du haut veld, du moyen veld et du bas veld du Zimbabwe ont été rapportées sur le niébé et le haricot doré (golden gram/greengram/mung bean: Vigna radiata/Phaseolus aureus). La variabilité intra-légume des deux paramètres était élevée parmi les quatre biotypes. La biotype du bas veld était le moins fécond et sa ponte durait le plus longtemps. La biotype du moyen veld présenta la plus haute fécondité sur le niébé mais qui n'était pas significativement différente de la ponte des trois autres biotypes sur le haricot doré.

Keywords

Callosobruchus rhodesianusgeographical strainsovipositionoviposition periodZimbabweCallosobruchus rhodesianusbiotypes géographiquespontepériode de ponteZimbabwe
Type
Research Articles
Information
International Journal of Tropical Insect Science , Volume 16 , Issue 3-4 , December 1995 , pp. 311 - 315
Copyright
Copyright © ICIPE 1995

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