Reproduction now or later: Optimal host-handling strategies in the whitefly parasitoid Encarsia formosa

Article Abstract:

Burger and coworkers developed a dynamic state variable model to understand host-handling behavior in the whitefly parasitoid Encarsia formosa from an adaptive viewpoint. The model predicts that when the function of host feeding is to gain nutrients for egg maturation, the host-feeding gain does not offset the loss of an opportunity to oviposit under presumably field conditions.

Aleyrodidae, Whiteflies, Burger Dairy Co.

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Timing of reproduction in a Darwin's finch: Temporal opportunism under spatial constraints

Article Abstract:

Temporal variation in reproductive activity in small ground finches in the Galapagos archipelago, Ecuador is studied by determining gonad sizes and plasma luteinizing hormone (LH) concentrations. High temporal flexibility and opportunistic breeding is indicated.

Influence, Reproduction (Psychology), Spatial analysis (Statistics), Archipelagoes

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