Theses and Dissertations


Title: Food of channel catfish and white catfish in ponds that received supplemental feed

Name: Devaraj, Kamarath Viduran

Degree: PhD

Chair: Dr. John S. Dendy

Resides: FAA Library

University: Auburn

Location: Auburn, Alabama

Date: 1970

Pages: 125

Keywords: Food,Channel Catfish,White Catfish,Supplemental Feed.

Abstract:

Studies on analysis of the contents of stomachs of channel catfish, Ictalurus punctatus (Rafinesque) and white catfish, Ictalurus catus (Linnaeus), were made during the period of April through October, 1969. The specimens were obtained by seine hauls from experimental ponds, on days with supplemental feeding and on days without supplemental feeding. The examination of the stomach contents revealed that channel catfish and whith catfish , when they were relatively small, fed mostly on crustaceans and small insects larvae. As they grew, they changed to a diet of large insect larvae and fish. However, filamentous algae, mollusks, oligochaetes and detritus were found in all size groups. Supplemental feed was earen by all size groups. Ninnows, centrarchids and unidentifiable fish remains were found in the stomachs of catfish 157 to 410 mm in total length.The stomach content indicated an inverse relationship between the quantity of supplemental feed and other natural food organisms eaten. Presence of carps and bassas in ponds did not influence the food habits of these fishes. Similarly, artificial aeration of ponds appeared to cause no differences in the food organisms consuned. On days when supplemental feed was not available the fish fed mostly on chironomid larvae and crustaceans. Presence of various food items from filamentous algae, mollusks, oligochaetes, crustaceans, aquatic insects and fish, to detritus, indicated the omnivorous nature of the catfishes. These fishes had no definite peak times of feeding through periods of 24 hours.

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