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Professor Emeritus of Zoology
Phone:
Fax:RM/Lab:
lorenlindahill@sbcglobal.net
Current Research Interests
Organismic responses of fishes to environmental variables. A vast array of topics within this subject area are available for both thesis and dissertation research.
Fishes exhibit the capacity for sensitivity to numerous water quality parameters. This sensitivity is related to such components as dissolved oxygen, salinity, hydrogen ion, temperature, etc. It is most unlikely that in natural conditions, variations in a single variable occur without simultaneous variations of one or more other variables. Thus new stimulus configurations arise, the fishes response to which may be entirely different from responses to variations of individual components of the configuration. Studies both in the field and laboratory indicate the need to analyze the effects of interaction of commonly occurring environmental variables on the habitat selection and partitioning of fishes.
The sensory components of the fish nervous system are extremely highly discriminative, and the sensitivity of the sense cells is often surprisingly extreme, as, for example, olfaction detection among certain fish species; sound communication and reception; and vision capabilities of fishes underwater and above the water. The sense organs of fish receive physical or chemical stimuli from the environment. Physical changes in heat flow or touch are felt through skin receptors; visual stimuli involve changes in light intensity and quality; and acoustical stimuli are received through the inner ear or lateral line.
Curriculum Vitae
M.S. ,University of Arkansas
B.S.., West Texas State University
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