Show simple item record

dc.contributor.advisorAnderson, J. W.
dc.creatorBedford, William Brian
dc.description.abstractRangia cuneata (Gray, 1832), an estuarine lamellibranch of the marine family Mactridae, is found in areas subject to salinity fluctuations ranging between 0 and 25°/oo. As adults these clams are capable of surviving several months in freshwater and at least two months in full-strength seawater. The present study was conducted to determine the effect of environmental salinity variation on selected physiological parameters. At salinities of 5°/oo or less Rangia responds by maintaining its blood osmotic concentration at approximately 60 m0sm/liter above the medium. Uptake of dissolved glycine is sharply reduced at salinities below 5°/oo, but between 6 and 25°/oo there was no significant difference in the rate of glycine uptake by whole animals or isolated gill tissue. ...en
dc.format.extent122 leavesen
dc.rightsThis thesis was part of a retrospective digitization project authorized by the Texas A&M University Libraries. Copyright remains vested with the author(s). It is the user's responsibility to secure permission from the copyright holder(s) for re-use of the work beyond the provision of Fair Use.en
dc.titleThe physiological ecology of the estuarine clam Rangia cuneata (Gray)en
dc.typeThesisen A&M Universityen of Philosophyen
dc.contributor.committeeMemberBerner, Leo
dc.contributor.committeeMemberCox, Elenor R.
dc.contributor.committeeMemberDarnell, R. M.
dc.contributor.committeeMemberSweet, Merrill H.
dc.format.digitalOriginreformatted digitalen
dc.publisher.digitalTexas A&M University. Libraries

Files in this item


This item appears in the following Collection(s)

Show simple item record

This item and its contents are restricted. If this is your thesis or dissertation, you can make it open-access. This will allow all visitors to view the contents of the thesis.

Request Open Access