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Document Type
Thesis - University Access Only
Award Date
1993
Degree Name
Master of Science (MS)
Department / School
Wildlife and Fisheries Science
First Advisor
Walter G. Duffy
Keywords
food habits, emeral shiner, spottail shiner, lake oahe, south dakota
Abstract
Abundance, age/length relationships, and food habits were studied for the emerald shiner Notropis atherinoides and the spottail shiner Notropis hudsonius at three sites on Lake Oahe, South Dakota, in 1990. Emerald and spottail shiners were among the most abundant species sampled in beach seine hauls between May and September. Spottail shiners were occasionally caught in small mesh gill nets. Emerald shiners were common in the upper and middle reservoir but were rare near the lower end of Lake Oahe. Spottail shiners were captured in higher numbers by night seining than by daytime seining. Age groups 0-3 were present for both species. Emerald and spottail shiners ate primarily large zooplankton and insects. Both species showed a preference for Daphnia. Shifts in feeding from zooplankton to insects occurred for both species when zooplankton abundance was low. The diets of emerald and spottail shiners showed considerable overlap on several sampling dates, indicating possible competition. Emerald and spottail shiners provide a prey base for predator fish in Lake Oahe in habitats where the primary prey, rainbow smelt Osmerus mordax is scarce or absent.
Library of Congress Subject Headings
Notropis -- Oahe, Lake (S.D. and N.D.) -- Feeding and feeds
Notropis -- Oahe, Lake (S.D. and N.D.) -- Geographical distribution
Description
Includes bibliographical references (page 46-51)
Format
application/pdf
Number of Pages
62
Publisher
South Dakota State University
Rights
Copyright © Deborah C. Sewell. All rights reserved.
Recommended Citation
Sewell, Deborah C., "Food Habits and Distribution of the Emerald Shiner, Notropis atherinoides Rafinesque, and the Spottail Shiner, Notropis hudsonius (Clinton), in Lake Oahe, South Dakota" (1993). Electronic Theses and Dissertations. 402.
https://openprairie.sdstate.edu/etd/402