Theses and Dissertations

Title: Production and growth of the threadfin shad, Dorosoma petenense (Gunther), alone and in combination with piscivorous species

Name: Swingle, Hugh Alan

Degree: MS

Chair: Dr. E.E. Prather

Resides: FAA Library

University: Auburn

Location: Auburn, Alabama

Date: 1967

Pages: 65

Keywords: Production,Growth,Threadfin Shad,Piscivorous Species.


Adult threadfin shad were stocked in ponds at rates of 100, 200, 800, and 1,600 per acre to determine the most efficient rate of stocking for maximum production of young. The most efficient stocking rate was found to be less than 100 adults per acre. Addition of supplemental pelleted feed did not contribute to the rate of growth of young shad, but did increase the growth and spawning frequency of adults. However, the benefits did not justify the cost of supplemental feeding. Threadfin shad spawned first in mid-May and at intervals throughout the summer until the second week of August. Small threadfin shad are available as forage for young piscivorous fish during the time they are needed most. Threadfin shad withstood predation by largemouth bass, Micropterus salmoides (Lacepede) or flathead catfish, Pylodictis olivaris (Rafineque) when only one predator was present. Young threadfin shad were completely eliminated from two ponds containing large numbers of bluegill, Lepomis macrochirus Rafinesque in addition to one piscivorous species.

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