Allozyme polymorphism in the cotton bollworm Helicoverpa armigera (Lepidoptera: Noctuidae): comparison of African and European populations

Nibouche Samuel, Buès Robert, Toubon Jean-François, Poitout S.. 1998. Allozyme polymorphism in the cotton bollworm Helicoverpa armigera (Lepidoptera: Noctuidae): comparison of African and European populations. Heredity, 80 : 438-445.

https://doi.org/10.1046/j.1365-2540.1998.00273.x

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Résumé : Genetic variability of 22 populations of #Helicoverpa armigera# (Hübner) (Lepidoptera, Noctuidae) was studied by comparison of allozyme frequencies at 15 loci. Seven loci were polymorphic at the 99% level. Populations originated from the south of France, Portugal, Morocco, Tunisia, Burkina Faso and Ivory Coast. Few significant deviations from Hardy-Weinberg equilibrium occurred, except for the #Acp# locus. Overall comparison of allele frequencies revealed significant differences for four loci, although the value of 0 was low (0.007). At a lower geographical scale, two situations were observed. Populations from France and Portugal showed significant differences when comparing allele frequencies, although 0 was low (0.0099). On the other hand, in northern and western Africa, no significant difference exists even when comparing populations located on either side of the Sahara desert. Results are discussed in relation to the migratory abilities of the species.

Mots-clés Agrovoc : Gossypium, Helicoverpa armigera, insecte nuisible, polymorphisme génétique, allozyme, variation génétique, population animale

Classification Agris : H10 - Ravageurs des plantes

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