Characterization of cholinesterase activity in tissues of the grass shrimp (Palaemonetes pugio)

2002 ◽  
Vol 72 (3) ◽  
pp. 186-192 ◽  
Author(s):  
Peter B Key ◽  
Michael H Fulton
Keyword(s):  
Cholinesterase Activity ◽  
Grass Shrimp ◽  
Palaemonetes Pugio

LOCALIZATION AND CHARACTERIZATION OF CHOLINESTERASE IN SUBCELLULAR FRACTIONS OF RAT BRAIN AND BEEF PITUITARY

1961 ◽  
Vol 39 (9) ◽  
pp. 1335-1345 ◽  
Author(s):  
Surendra S. Parmar ◽  
Morley C. Sutter ◽  
Mark Nickerson
Keyword(s):  
Rat Brain ◽  
Cholinesterase Activity ◽  
Succinic Dehydrogenase ◽  
Anterior Lobe ◽  
Subcellular Fractions ◽  
Posterior Pituitary ◽  
Low Concentrations ◽  
Pituitary Glands ◽  
Hydrolysis Of

Fresh rat brains and fresh anterior and posterior pituitary glands of beef were separated by differential centrifugation into subcellular fractions, characterized on the basis of sedimentation and succinic dehydrogenase activity. Cholinesterase activity was measured by both manometric and colorimetric methods, the results of which were comparable. Cholinesterase activity of rat brain was found mainly in the microsome and supernatant fractions. It was quite uniformly distributed in all subcellular fractions of both anterior and posterior pituitary. Comparisons of the relative rates of hydrolysis of acetylthiocholine and butyrylthiocholine, and of inhibition by eserine, indicated that brain contains a much higher percentage of acetylcholinesterase than do both lobes of the pituitary, which contain relatively low concentrations of the specific enzyme. Total cholinesterase activity and its sensitivity to inhibition by eserine in the posterior pituitary were found to be midway between those of the anterior lobe and of the brain, from which the posterior pituitary was derived during embryological development.

Effects of the anti-fouling herbicide Irgarol 1051 on two life stages of the grass shrimp, Palaemonetes pugio

2007 ◽  
Vol 43 (1) ◽  
pp. 50-55 ◽  
Author(s):  
Peter B. Key ◽  
Katy W. Chung ◽  
Jennifer Hoguet ◽  
Yelena Sapozhnikova ◽  
Michael H. Fulton
Keyword(s):  
Grass Shrimp ◽  
Life Stages ◽  
Palaemonetes Pugio ◽  
Irgarol 1051

Avoidance of pesticides by grass shrimp (Palaemonetes pugio)

1973 ◽  
Vol 9 (3) ◽  
pp. 129-133 ◽  
Author(s):  
David J. Hansen ◽  
Steven C. Schimmel ◽  
James M. Keltner
Keyword(s):  
Grass Shrimp ◽  
Palaemonetes Pugio
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