Scott Henderson

Suspected Natural Hybridization of Striped Bass and White Bass in Two Arkansas Reservoirs

In 1981, hybrid striped bass (Morone saxatilis x Morone chrysops) appeared in Lake Maumelle and Beaver Lake, Arkansas, both which had only been stocked with striped bass (Morone saxatilis). Therefore, it was suspected that natural hybridization might have occurred between striped bass and native populations of white bass (Morone chrysops). Scale sample analysis revealed that the hybrid striped bass collected from Lake Maumelle were from 1978 and 1979 year classes. Hybrids from the 1979 year class were collected from Beaver Lake. Review of historical stocking data did not reveal any...


Production Potential Of Catfish Grow-Out Ponds Supplementally Stocked With Silver And Bighead Carp

Three experimental ponds were stocked with a polyculture of channel catfish (Ictalurus punctatus). silver carp (Hypopthalmichthyes molit rix) , and bighead carp (Aristichthes nobilis). Three control ponds were stocked with catfish alone. In 2 of the 3 sets of ponds, there was little difference in catfish production (less than I and 10% by weight) while total production in the polyculture ponds far exceeded the controls with catfish alone. In the remaining set. catfish production was less in the polyculture pond but total production remained higher as a result of the additional growth of...


Preliminary Studies on the Tolerance of the White Amur, Ctenopharyngodon idella, to Rotenone and Other Commonly Used Pond Treatment Chemicals

The White Amur, Ctenopharyngodon idella, was found to be able to withstand recommended pond treatment concentrations of potassium permanganate, formalin, copper sulfate, and malachite green. In all instances, 100% of the test fish survived a 96 hour tolerance period at concentrations above the dosages recommended and used by the Arkansas Game and Fish Commission for disease and vegetation control in earthen ponds. Both rotenone and antimycin were bio-assayed for possible use as a toxicant selective toward the White Amur. Both show promise as 100% mortality was recorded for test fish at...