Physiological Attributes of Reproductively Active and Dormant Mexican Bean Beetles 12

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Abstract
Measurements of several physiological parameters of adult Mexican bean beetles, Epilachna varivestis Mulsant (Coleoptera: Coccinellidae), throughout the season indicate a reproductive diapause. Both sexes of diapausing Mexican bean beetles had an increased dry weight, enlarged fat bodies, reduced inactive gonads, reduced respiration rates and lower water contents than reproductively active beetles. The type of host plant (i.e., lima bean vs soybean) influenced values of certain parameters, e.g., dry weight, fat body index and gonad length of male beetles were significantly higher for individuals reared on lima bean rather than soybean.

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