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Showing 1 to 20 of 56 for “"channel catfish"”.
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Oxytetracycline Induced Photosensitivity in Channel Catfish (Ictalurus punctatus)
… injection with oxytetracycline was evaluated in channel catfish. In a controlled experiment, only oxytetracycline-injected fish that were exposed to direct sunlight exhibited necrotic ocular and dorsolateral epidermal lesions. All of the affected fish died within 8 d. All of the fish from three …
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Investigations into DNA vaccination against Channel Catfish Virus
The leading viral killer of commercially produced channel catfish is Channel Catfish Virus (CCV). Studies conducted to evaluate DNA vaccination against CCV compared encoded gene, dose, multiple DNA vaccines, and immune response to vaccination. Genes were selected (ORFs 1 and 3 [immediate early …
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Experimental cage culture of channel catfish in Virginia
Three strains of channel catfish, Ictalurus punctatus (Rafinesque), from the southeastern United States were cultured in cages to select a strain that would attain a marketable size during the relatively short Virginia growing season. The strains were compared in terms of yield, survival, mean …
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A Standardized Ultrasonography Classification for Channel Catfish Ovarian Development
… tool in genetic improvement programs for channel catfish Ictalurus punctatus. A literature review on the use of ultrasonography in fish reproduction generated a comprehensive reference data set intended to benefit existing and potential users. It exposed the need for reporting of …
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Material and Acoustic Properties of Swimbladders of Tilapia and Channel Catfish
… in Tilapia (an auditory generalist) and the channel catfish (an auditory specialist). The swimbladder was struck with a piezoelectric impact hammer. Amplitude and timing characteristics of bladder sound and displacement were compared for strikes of different amplitudes. Most of the first …
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Culture of Channel Catfish in East-Central South Dakota Dugout Ponds
… (mean weight 39.4 g, mean total length 108.4 mm) channel catfish (Ictalurus punctatus) at stocking rates of 309, 618, 1,235, and 1,853 fish/ha. Supplemental food was provided in 16 ponds (four at each stocking rate) at a rate of 4% body weight every other day. Fish in four ponds stocked, one at …
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Temperature acclimation in the channel catfish, Ictalurus punctatus: Seasonal variation and cellular mechanisms
… composition and activities of liver enzymes of channel catfish acclimated to $7\sp\circ\rm C,$ $15\sp\circ\rm C,$ or $25\sp\circ\rm C.$ Fall and winter catfish exhibited positive acclimation for total liver protein and DNA, hepatosomatic index, and activity of pentose phosphate shunt enzymes, …
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An Assessment of the Channel Catfish Population in the Big Sioux River, South Dakota
Prior to this research, no catfish-specific studies had been conducted on the Big Sioux River (BSR) despite the fact that channel catfish Ictalurus punctatus are the most harvested and most preferred gamefish by recreational anglers on the BSR. Some South Dakota catfish anglers have requested …
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Feeding Ecology and Factors Influencing Growth and Recruitment of Channel Catfish in South Dakota Reservoirs
Channel Catfish Ictalurus punctatus are a major sportfish in the Missouri River basin, and despite being one of the most abundant species in South Dakota rivers and reservoirs, the impact of Channel Catfish populations and factors that influence their dynamic rates are not known. To address the …
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Cage culture of channel catfish in a heated effluent from a power plant, Thomas Hill Reservoir
The thermal effluent from electric power plants has been a subject of increased concern because of possible detrimental effects to the enviornment. Power demands in the united states have increased tremendously and may double over the next decade (Yee 1972). The need for electrical power is and …
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Population Characteristics and Habitat Selection of Channel Catfish (Ictalurus punctatus) in the Lower James River, South Dakota
… characteristics and habitat preferences of the channel catfish Ictalurus punctatus in the lower James River, South Dakota. Length, weight, and pectoral spines were collected from 327 channel catfish captured with hoop nets and trotlines. The mean hoop net catch rate (l.35 ± 0.25) was lower than …
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EFFECTS OF ALTERNATIVE PREY AS A BUFFER TO PREDATION OF CHANNEL CATFISH (ICTALURUS PUNCTATUS) BY LARGEMOUTH BASS (MICROPTERUS SALMOIDES)
Channel catfish have pectoral spines that lock to defend against gape-limited predators such as largemouth bass. Previous work indicated that spines increase survival of channel catfish exposed to bass but did not determine whether bass avoid catfish if less dangerous species are available. We …
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Temperature Acclimation of Enzyme Activities and Protein Synthesis in Channel Catfish (Ictalurus Punctatus). In Vivo and In Vitro Studies
Hepatocytes from 15(DEGREES)C acclimated catfish isolated by collagenase perfusion were maintained for 3-4 weeks in primary culture at 7, 15, and 25(DEGREES)C on biomatrix prepared from liver structural proteins. Specific activities of enzymes of cultured hepatocytes showed acclimatory compensation …
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