| Gaia: | Bruchids feed primarily on legume seeds, which include some economically important crops such as the bean (Phaseolus vulgaris L.), chickpea (Cicer arietinum L.), lentil (Lens culinaris Medik.) and tamarind (Tamarindus indica L.) among others. Whereas the first is the main source of protein in the human diet; Vigna unguiculata (L.) Walp because of its nutritional properties could replace the bean, pests, in particular bruchids, are a major problem and cause considerable postharvest losses. For this reason, it is necessary to determine population parameters of Acanthoscelides obtectus (Say, 1831), Callosobruchus maculatus (Fabricius, 1775) from two different hosts and Zabrotes subfasciatus (Boheman, 1833) fed with V. unguiculata through a demographic study under controlled conditions. Population parameters were estimated with the cohort life table technique, the Log rank test (p
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