Hopkins Marine Station Student Paper

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(full paper is archived in the Miller Library)

Title: Osmoregulation in Tigriopus californicus
Student Author(s): Merchant, Thomas C.
Faculty Advisor(s): Burnett, Robin
Pages: 17
Location: Final Papers Biology 175H
Date: June 1977
Keywords: high tide pools
Abstract: Tigriopus californicus exhibit a unique osmoregulatory behavior which is highly adaptive in the high splash pool habitat. They conform osmotically in intermediate salinities and regulate hypo and hyper osmotically in high and low salinities respectively. Gut fluid appears to remain isosmotic with the environment. Evidence is presented to suggest the gut may be a regulatory surface in Tigriopus. The range of osmoconformance depends on the length of acclimation to a given salinity. O2 consumption in Tigriopus is high in low salinities decreasing as salinity rises. Metabolism appears not to change significantly over the conforming range 35 to 60 0/00