Habitat Use of Suwannee Bass and Largemouth Bass in the Withlacoochee River, Florida

We investigated the microhabitat selection of largemouth bass (Micropterus salmoides) and Suwannee bass (M. notius) using multivariate logistic regression modeling. Relative use probabilities for cover types were similar among juvenile and adult bass of both species with minor differential use. However, the water velocity and depth selection functions between juveniles were associated with slow and shallow locations, while the selection functions between adults were associated with intermediate speeds and depths. The predictive abilities of the habitat selection models significantly differed between juvenile and adult bass of both species, between adult largemouth bass and Suwannee bass, but not between juvenile largemouth bass and Suwannee bass.

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