Richard L. Cailteux

Evaluation of Three Low Frequency Electrofishing Pulse Rates for Collecting Catfish in Two Florida Rivers

We evaluated three low frequency electrofishing pulse rates (30, 15, and 7.5 pulses per second [pps]) for differences in relative abundance, size structure and species composition of catfish species in two north Florida rivers (Apalachicola and Suwannee). Three species of catfish were collected from each river: Apalachicola River-flathead catfish (Pylodictis olivaris), channel catfish (Ictalurus punctatus), and blue catfish (I. furcatus); Suwannee River-spotted bullhead (Ameiurus serracanthus), channel catfish, and white catfish (I. catus). In both rivers, the dominant catfish species (...


Differences in Largemouth Bass Food Habits and Growth in Vegetated and Unvegetated North-central Florida Lakes

Stomachs of 5,818 largemouth bass (Micropterus salmoides) were examined from 10 north-central Florida lakes to determine differences in food habits of largemouth bass in lakes with abundant aquatic macrophytes (vegetated) and lakes nearly devoid of aquatic macrophytes (unvegetated). We found significant differences (P < 0.05) between stomach contents of 6 length groups of largemouth bass (range: 60-640 mm TL) from vegetated and unvegetated lakes. The 152- to 254-mm length group exhibited the greatest number of diet differences. Atherinids, decapods, and odonates were consumed more...


Reevaluating the Use of Acrylic Tubes for Collection of Largemouth Bass Stomach Contents

Stomach contents of 434 largemouth bass (Micropterus salmoidesfloridanus) were collected with clear acrylic tubes. Sixty-four percent of the bass contained food. No significant differences (P > 0.05) in percent recovery of food items by weight occurred among 3 biologists for the 6 size groups studied. Greater than 80% recovery by weight of all food was obtained with acrylic tubes in 6 size groups of bass ranging from 100 to 590mm TL. Seven percent of bass that yielded no food when sampled with tubes actually contained food. Appropriate tube size was important in efficient food...