A Discriminant Functions Analysis of Sunfish (Lepomis) Food Habits and Feeding Niche Segregation in the Lake Pontchartrain, Louisiana Estuary
- 1 September 1978
- journal article
- research article
- Published by Oxford University Press (OUP) in Transactions of the American Fisheries Society
- Vol. 107 (5) , 713-719
- https://doi.org/10.1577/1548-8659(1978)107<713:adfaos>2.0.co;2
Abstract
The food habits of four species of sunfish, Lepomis macrochirus, L. microlophus, L. punctatus, and L. gulosus were studied in the Lake Pontchartrain estuary. Forty estuarine food items were identified from stomach samples. Although the food items were different from those of Lepomis spp. in fresh water, specific feeding patterns in regard to prey size and space partitioning were comparable. A discriminant functions analysis was used to objectively compare specific differences in stomach content data. Differences in discriminant function scores appeared to be due to interspecific feeding niche segregation.Keywords
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