Charles E. Cichra

Movement and Habitat Selection Of Largemouth Bass in a Florida Steep-sided Quarry Lake

The movement and habitat selection of largemouth bass (Micropterus salmoides) was determined in a north-central Florida lake from 18 April 2002 to 1 May 2003 via radio telemetry. The study site was a steep-sided, 7-ha flooded limerock quarry, composed of six conjoined sub-basins. Twelve largemouth bass were internally implanted with radio transmitters (of no more than 18% of the total length of the fish). Limnetic areas were selected over littoral areas during the summer (May through October) and fall/winter (November through January) periods. Only one fish used littoral areas more than...


Prey Vulnerability to Peacock Cichlids and Largemouth Bass Based on Predator Gape and Prey Body Depth

The interaction of prey fish body depth and predator gape size may produce prey assemblages dominated by invulnerable prey and excessive prey-to-predator biomass ratios. Peacock cichlids (Cichla ocellaris) were stocked into southeast Florida canals to consume excess prey fish biomass, particularly spotted tilapia (Tilapia mariae). The ecomorphologically similar largemouth bass (Micropterus salmoides) was already present in the canals. We present relations of length-specific gape size for peacock cichlids and largemouth bass. Both predators have broadly overlapping gape size, but largemouth...


Relationships of White Crappie Populations to Largemouth Bass and Bluegill

During summer, 1976, fish population data were collected by gillnetting, electrofishing, and seining from 30 flood prevention lakes that maintained coexisting populations of white crappie (Pomoxis annularis), largemouth bass (Micropterus salmoides), and bluegill (Lepomis macrochirus). Abundance and size composition characteristics for white crappie were compared by simple correlation techniques to abundance and size composition characteristics for largemouth bass and bluegill Total numbers of white crappie were not significantly correlated to total numbers of largemouth bass or bluegill...


Differential Resistance Of Northern And Florida Largemouth Bass To Cold Shock

Texas stocks of northern and Florida largemouth bass (Micropterus salmoides salmoides and M. s. floridanus) were compared for resistance to cold shock. The 45 advanced fmgerlings of each subspecies had nearly identical rearing histories and were acclimated to a common temperature near 21 C. Laboratory tests were conducted at constant temperatures ranging from 5.3 to 13.5 C. Over all tests, more than twice as many Florida bass as northern bass died during the 7 days ofobservation. Weestimated that the 96-h median tolerance limit was about 6 C for northern bass and about 8.5 C for the...