SREL Reprint #0955




Enzyme Levels in Natural Mosquitofish Populations

Edwin H. Liu, Michael H. Smith, Mary Jo W. Godt, Ronald K. Chesser, A. Keith Lethco, and David J. Henzler



Adenosine deaminase (ADA), lactate dehydrogenase (LDH), and malate dehydrogenase (MDH) activity levels were measured in mosquitofish populations from contrasting natural environments.  Significant differences in enzyme level, in the level of soluble protein, and in length and weight were observed among populations from different habitats.  MDH and LDH activities were highest in running-water populations, whereas ADA was elevated in coastal environments.  Still-water females were longer and weighed less than running-water females.  The regression relationships of length vs. weight and protein vs. weight also varied significantly among populations.  The proportion of enzyme activity variation which could be accounted for by habitat, location, or log length was not the same for the three enzymes, suggesting that biological and physical factors influence the activities of various enzymes in different ways.


SREL Reprint #0955

Liu, E.H., M.H. Smith, M.J.W. Godt, R.K. Chesser, A.K. Lethco, and D.J. Henzler. 1985. Enzyme levels in natural mosquitofish populations. Physiological Zoology 58:242-252.

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