The surface microstructure of marine and terrestrial isopoda (Crustacea,Peracarida) |
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Authors: | Powell C V L Halcrow K |
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Institution: | (1) Department of Biology, University of New Brunswick, P.O. Box 5050, E2L 4L5 Saint John, N.B., Canada |
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Abstract: | Summary The microstructure of the surface of thirteen marine littoral and two terrestrial isopods was investigated by scanning electron microscopy. A great diversity of surface ornamentation is present, including non-sensory microscales, pits, tubercles, and ridges, and sensory tricorns, pit organs, pores, papillae and setae. Microscales are common features of the integument surface; their shape and size are highly variable. Tricorns were not observed on the marine littoral isopods. Several hitherto undescribed structures were observed including spade-like projections from the tergite surface of Oniscus asellus, hair-like filaments associated with the microscales of Jaera and ridged conical protuberances on Edotea triloba and E. montosa. The possible function of certain surface microstructures is discussed. |
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