Date of Award

4-2015

Document Type

Poster Session

Department

Environmental Science

First Advisor

Joseph K. Staples

Keywords

Holarcti Insect Species, Cocoons, water vapor uptake, Pine Sawfly

Abstract

For many Holarctic insect species, overwintering in a tightly spun cocoon provides protection against predators and pathogens, physical damage, and extreme fluctuations in environmental conditions. Research with insect cocoons has shown that the physical properties of the cocoon wall play an important role in regulating the diffusion of water vapor and respiratory gases. In an attempt to better understand properties of water vapor diffusion across the cocoon wall, we measured relative amounts of water uptake or loss in overwintering cocoons of the Introduced Pine Sawfly (Diprion similis (Hartig)) in Maine. We also characterized the relative density of silk fibers arranged along the interior and exterior cocoon wall.

Included in

Entomology Commons

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