Hopkins Marine Station Student Paper

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(full paper is archived in the Miller Library)

Title: A comparative study of the water-proofing proerties of the cuticles of four species of isopods
Student Author(s): DeRiemer, Kathy
Pages: 32
Location: Final Papers Biology 175H
Date: June 1973
Keywords: Isopoda
Abstract: The cuticles of four species of isopods, the terrestrial species Armadillidium vulgare and Porcellio scaber, and the marine species Idotea montereyensis and Idotea resecata, were examined, focusing attention on whether or not there is a detectable lipid layer, such as occurs in insects, which might aid in water-proofing the integument of these animals. The rates of water loss over a range of temperatures were compared. A comparison of such rates with those of animals which had been treated with chloroform, a lipid solvent, is presented, and the results suggest that similar methods used in the past may lead to erroneous conclusions. No lipids were detectable in the cuticles with histochemical techniques. Basic structural similarities and differences in the cuticles of the four species are given, and the significance of these results are discussed.