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Creator:: Lidrich, Joseph Stanley
Abstract:: In freshwater the crayfish, Pacifasticus leniusculus, maintains sodium balance by absorbing sodium against a large concentration gradient. The site of uptake is the gills. The rate of uptake is regulated and can be increased by depleting the animals of sodium Neither the mechanism of sodium transport or the regulatory mechanism...
Resource Type:: Masters Thesis
Full Text:: normal animal. Journal of Experimental Biology 37:83 -99. Bryan, G. W. 1960b. Sodium regulation in the

Creator:: Kerley, David Emmet
Abstract:: Osmotic and ionic regulation was studied in the North American crayfish Pacifastacus leniusculus (Dana), stepwise acclimated to increasing salinities. Stepwise acclimation involved transferring crayfish at 48 hour intervals from freshwater to 100% seawater in 20% increments. In experiments where 70% seawater was used, animals were moved directly from 40 to...
Resource Type:: Dissertation
Full Text:: remain unchanged when the animal is stressed to increasing salinities. Estimations of urine volumes by

Creator:: Yuen, Rosalind Wai-ping
Resource Type:: Masters Thesis
Full Text:: whole animal and of the excised gi1l, green gland and gut were rneasured. Results obtained for the

Creator:: Turner, Lewis McDonald
Resource Type:: Masters Thesis
Full Text:: arthropods has been investigated by many workers. Measurements of the oxygen uptake of the whole animal

Creator:: Kerley, David Emmet
Resource Type:: Masters Thesis
Full Text:: not mean that the body fluids are isotonic to the external medium, but that the blood of the animal

Creator:: Morse, Howard Curtis
Abstract:: The gills of an Oregon crayfish, Pacifastacus leniusculus Dana, were examined with histological and histochemical techniques and their fine structure was investigated by electron microscopy. Special attention was given to the structural basis of active ion uptake. The histology of these gills was the same as that of other crayfish...
Resource Type:: Dissertation
Full Text:: approach to determine the site of salt uptake is to immerse the living animal in a dilute solution of

Creator:: Foster, Jack
Resource Type:: Masters Thesis
Full Text:: periodicities in the animal kingdom. I. The invertebrates. Journal of the Tennessee Academy of Science 19:179

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