W. D. Harvey

Largemouth bass (Micropterus salmoides) held at lO.7 and 26.7 C in insulated fiberglass tanks were treated with rotenone and inspected daily to determine days-tosurfacing and change in body weight. Fish held at lO.7 C surfaced in 3-12 days, whereas fish held at 26.7 C surfaced within 24 hours. Fish at each temperature gained weight after death. Analysis of weight gain in fish held at 10.7 C produced no significant relationship between weight-gain and period of submergence for fish submerged 7 or more days. Weight gain was an exponential function of total length in fish held at lO.7 C and a...

At the request of Texas state game wardens, a low intervention weight-loss program was implemented for 48 officers assigned to 3 law enforcement districts and the department headquarters staff. The program was designed to take advantage of the social interaction and support of wardens assigned to the same unit. At termination of the l4-week program, 90% of the participants had lost weight and mean weight loss for all officers was 8.6Ib. Weight-loss was related to initial weight of participants and to the district of assignment. Program cost was similar to those of other low intervention...

Isoelectric focusing (IEF) and densitometric scanning were used to identify 6 species of catfish based on diagnostic bands and banding patterns produced by muscle proteins. Blue catfish (lctalurus furcatus), white catfish (Ictalurus catus), and flathead catfish (Pylodictis olivaris) each have diagnostic bands in pH 4-5 gels that allow positive species identification. IEF of channel catfish (Ictalurus punctatus) musculature in this pH range exhibits a polymorphic system. One of the bands is diagnostic for this species when present, allowing identification of 58% of the channel catfish...

Natural reproduction of hybrid striped bass (Marone chrysops x M.saxatiUs) was documented in Lake Palestine, Texas. Electrophoresis and isoelectric focusing analysis indicated 29% of the sampled Marone spp. were non F-l hybrids. These individuals apparently resulted when F-l hybrids reproduced with white bass and/or F-l hybrids. Age analysis revealed the non F-l hybrids were from years when hybrid striped bass were not stocked.