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Allozyme variation and an estimate of the inbreeding coefficient in the coffee berry borer, Hypothenemus hampei (Coleoptera: Scolytidae)

Published online by Cambridge University Press:  10 July 2009

Philippe Borsa*
Affiliation:
ORSTOM, Institut Francais de Recherche Scientifique pour le Développement en Coopération, Noumea, Nouvelle-Calédonie
D. Pierre Gingerich
Affiliation:
Department of Ecology and Systematics, Cornell University, Ithaca, New York, USA
*
P. Borsa, ORSTOM, BP A5, Noumea, New Caledonia.

Abstract

Seven presumed Mendelian enzyme loci (Est-2, Est-3, Gpi, Idh-l, Idh-2, Mdh-2 and Mpi) were characterized and tested for polymorphism in coffee berry borers, Hypothenemus hampei (Ferrari), sampled in Côte d′Ivoire, Mexico and New Caledonia. The average genetic diversity was H = 0.080. Two loci, Mdh-2 and Mpi were polymorphic, and thus usable as genetic markers. The population structure of H. hampei was analysed using Weir & Cockerham's estimators of Wright's F-statistics. A high degree of inbreeding (f = 0.298) characterized the elementary geographic sampling unit, the coffee field. The estimate of gene flow between fields within a country was Nm = 10.6 and that between countries was Nm = 2. The population genetic structure in H. hampei could be related to its known population biological features and history.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1995

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