Theses and Dissertations


Title: Food interrelationships of six fish species in Halawakee Creek, Alabama

Name: Mathur, Dilip

Degree: PhD

Chair: Dr. John S. Ramsey

Resides: FAA Library

University: Auburn

Location: Auburn, Alabama

Date: 1972

Pages: 122

Keywords: Food Interrelationships,Campostoma anomalum,Ericymba buccata,Notropis baileyi,Notropis venustus,Notropis zonistius,Percina nigrofasciata,Halawakee Creek,Alabama.

Abstract:

Daily and seasonal food and feeding interrelationships of six fish species (Campostoma anomalum, Ericymba buccata, Notropis baileyi, Notropis venustus, Notropis zonistius and Percina nigrofasciata) of Halawakee Creek, Alabama were studied. Some 4,400 stomachs were analyzed. To a certain extent the species appeared to exhibit ecological separation in habitat specialization, level in water at which food was obtained, major foods, specialized or generalized feeding and time of maximal food intake over the 24-hour period. Ecological separation and superabundance of certain food items may be operative in reducing the potential interspecific competition. However, there was considerable similarity in the niches of N. baileyi and N. zonistius. Food of the smallest and largest sizes of E. buccata, N. baileyi and N. zonistius changed with growth. The shift involved a graduate change in the proportions of the different kinds of foods consumed, and the addition of new types. The diets of various sizes of C. anomalum, N. venustus and P. nigrofasciata did not exhibit appreciable changes with growth. Distinct seasonal changes in food habits of the six species were noted and probably were related to the availability and abundance of the prey organisms. Feeding activity was maximal during spring and early summer months and minimal in winter months.

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