Effects of calyx fluid from a population of Cotesia sesamiae (Cameron) (Hymenoptera: Braconidae) on the immune response of its host Busseola fusca Fuller (Lepidoptera: Noctuidae)

Publication Type

Journal Article

Journal Name

Entomologia Experimentalis et Applicata

Publication Date

1-1-1993

Abstract

Banana weevil females laid on an average 2.7 eggs/week in rhizome material and 0.7 eggs/week in pseudostem material in the laboratory. At extremely high weevil population densities the egg‐laying activity declined. Under controlled field conditions 0.7 eggs/week were laid in banana suckers and 1.3 eggs/week in stumps of harvested suckers. 25% of the weevil stages found in suckers in the field were eggs of which 78% were laid in the rhizome and 22% in the pseudostem base. The majority of eggs was deposited in the crown area of the rhizome followed by the remaining surface area of the rhizome, the walls of abandoned larval tunnels in rhizome and pseudostem and the leaf sheaths. 58% of the eggs found were considered accessible to egg predators. 1993 The Netherlands Entomological Society

Keywords

banana weevil, Cosmopolites sordidus, egg predators, egg‐laying sites, ferility

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