période de cohabitation dans les greniers après les récoltes du niébé. Abstract : With an automatic image analysis device, we studied the temporal distribution of the locomotor activity of E orientalis and E vuilleti during 24 hours, and over several days to know whether the activity rhythms of these two Eupelmidae play a role in their competitive interactions. The analysis of locomotor activit...

Cowpea, Vigna unguiculata [L.] Walp. is a widely planted nutritious grain legume [1]. It is cultivated in many West African countries including Nigeria. Cowpea is a source of dietary protein, vitamins and mineral salts. It has been consumed by human since the earliest practice of Agriculture in developing countries of Africa, Asia, and Latin America [2]. The pulse beetle, Callosobruchus maculat...

tents reduces yield, while feeding scars and holes on testa reduce the quality and marketability of pea seed. The pea weevil, Bruchus pisorum (L.) (Coleoptera: Bruchidae), is In addition, weevil-damaged seed has lower germination one of the most intractable pest problems of cultivated pea, Pisum sativum L. The availability of resistant cultivars would give growers rates and is prone to structur...

Maternal effects occur when the phenotype or environment of a mother affects the phenotype of her offspring via some mechanism other than the transmission of genes. The primary objective of this review is to use examples from my own research on the interaction between seed beetles and their host plants to illustrate how maternal effects influence ecological interactions in nature. I explain how...