Hopkins Marine Station Student Paper

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(full paper is archived in the Miller Library)

Title: Embryonic development and developmental conditions within the marsupium of Porcellio scaber and Idothea resecata
Student Author(s): Yim, Randall Anthony
Faculty Advisor(s): Burnett, Robin
%E Abbott, Donald
%E Phillips, John
Pages: 22
Location: Final Papers Biology 175H
Date: June 1973
Keywords: Isopoda
Abstract: Evidence suggests that developing embryos increase in both inorganic and organic weight within the brood pouch. Brood fluid appears to contain a higher concentration of solute than other fluids found in the animals' environment. Several hypotheses can be developed to describe these results: a) the mother is actively concentrating minerals and/or nutrients within the brood fluid; b) a decrease in brood size is noted through development. Perhaps decaying embryos provide and important source for other developing embryos. More work is needed to concretely say if the mother is actively supplying minerals and/or nutrients to developing embryos. The evidence I have presented is circumstantial but highly suggestive that indeed themother is active in embryonic development.