Hopkins Marine Station Student Paper

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(full paper is archived in the Miller Library)

Title: Fecundity and intertidal size class distribution of the marine isopod Idotea (Pentidotea) stenops Benedict
Student Author(s): Sellers, Robert G.
Faculty Advisor(s): Abbott, Isabella
Pages: 21
Location: Final Papers Biology 175H
Date: June 1973
Keywords: Isopoda
Abstract: Embryos were removed from the marsupia of ovigerous females of Idotea stenops and examined for developmental stage and total number present. Statistical analyses suggest that body length of females and embryonic stage of young both influence fecundity, body length contributing positively and developmental stage contributing negatively. Embryos at different stages of development were observed in the brood pouches of only a few individuals. Juvenile isopods were found to inhabit only the brown algal Egregia menziesii while adults inhabited both Egregia and Laminaria setcheilli. The relative size and number of isopods decreased with increasing tidal height. Juvenile isopods comprise the bulk of the population in all study areas.