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View Resource Egg size plasticity in bean beetles (Callosobruchus maculatus): Does host bean species matter?

In this exercise, students design a series of experiments (1) to test whether female bean beetles adjust the size of their eggs on different host bean species and (2) to determine whether differences in egg size based on host bean species are optimal. Most often, students design experiments in which different females are allowed to lay eggs on different bean species that vary in nutritional...

 

Publisher: EcoEd Digital Library

View Resource Rapid Adaptation of Bean Beetles to a Novel Host

Bean beetles (Callosobruchus maculatus) are phytophagous insects that lay their eggs on the surface of several species of beans in the family Fabaceae. Larval development is completed within the bean. Therefore, we would expect strong selection when the beetle switches to a new host. Students are provided with live cultures of beetles containing adults that have been raised on mung beans (Vigna...

 

Publisher: EcoEd Digital Library

View Resource Exploring the Lotka-Volterra Competition Model with Two Species of Parasitoid Wasps

In this Experiment, students design an experiment to examine intraspecific and interspecific competition using two species of parasitoid wasps (Nasonia vitripennis and Melittobia digitata). Students examine the effect of both types of competition on reproductive output in the wasps. One or two females are placed on a single host: alone, or a competitor of the same species (intraspecific), with a...

 

Publisher: EcoEd Digital Library

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