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Showing 1 to 20 of 38 for “"Ictalurus punctatus"”.
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Oxytetracycline Induced Photosensitivity in Channel Catfish (Ictalurus punctatus)
Photosensitivity following 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 …
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Temperature acclimation in the channel catfish, Ictalurus punctatus: Seasonal variation and cellular mechanisms
Seasonal variations were seen in liver 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 …
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Population Characteristics and Habitat Selection of Channel Catfish (Ictalurus punctatus) in the Lower James River, South Dakota
… 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 mean catch rates …
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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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The use of selected enzyme activities as indices of growth and nitrogen metabolism in fingerling channel catfish (Ictalurus punctatus)
… evaluating dietary proteins for channel catfish (Ictalurus punctatus) and to gain basic knowledge of its nitrogen metabolism with respect to dietary protein quantity and protein quality. Experiments l, 2 and 3 were short-term (7-week) growth trials with fingerling catfish in aquaria under …
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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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Uptake of Mercury and Relationship to Food Habits of Selected Fish Species in the Shenandoah River Basin, Virginia
… of mercury in Catostomus commersoni, Ictalurus punctatus, Lepomis auritus, and Micropterus dolomieu by studying food habits, total mercury and methylmercury in common prey items, and bioaccumulation dynamics of methylmercury in the mercury contaminated South River and South Fork of the …
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ECOLOGICAL AND SOCIOLOGICAL IMPLICATIONS OF TISZA RIVER MINE TAILINGS POLLUTION AND EFFECT OF CHRONIC CADMIUM EXPOSURE ON FISH PHYSIOLOGY
… exposure on a model species, channel catfish (Ictalurus punctatus). Specific research questions discussed in the following chapters include: (1.) What is the current distribution of metals in the lower Tisza River Basin and are metals transported from the main channel to floodplain habitats?; …
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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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A Standardized Ultrasonography Classification for Channel Catfish Ovarian Development
… 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 instrument control …
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Behavioral avoidance by fish of residual chlorine in power plant discharges
… Carp (Cyprinus carpio), channel catfish (Ictalurus punctatus) and golden shiners (Notemigonus crysoleucas) were tested at 6, 12, 18, 24 and 30-C acclimation temperatures in a steep concentration gradient. Residence time in the treated water was determined to be the most simple and …
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High-throughput sperm cryopreservation of aquatic species
… to aquatic species. The blue catfish Ictalurus furcatus was selected for research due to its role in production of hybrid catfish with eggs from channel catfish Ictalurus punctatus. A high-throughput cryopreservation pathway was developed by systematically evaluating each process …
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Predation, turbidity, and other factors influencing juvenile Salmonid survival in the lower Snake River
… walleye (Sander vitreus) and channel catfish (Ictalurus punctatus). Consumption information is crucial because the construction of the Snake River hydrosystem has created a series of reservoirs, which have altered the river 's flow regimes, riparian vegetation, and turbidity. Further, several …
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Self-caught fish consumption and methylmercury advisories in Tuscaloosa County, Alabama
… (Micropterus salmoides) and channel catfish (Ictalurus punctatus) near the Lake Tuscaloosa study site where current advisories are issued. Environmental conditions seem to support greater rates of mercury methylation and bioaccumulation at the site with existing advisories. Still, there is a …
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A Survey of the Fishes and Habitat of the White River, South Dakota
… chub Platygobio gracilis (44%), channel catfish Ictalurus punctatus (22%), and plains minnow Hybognathus placitus (13%). Sturgeon chub Macrhybopsis gelida, were found at 10 study reaches and composed 4% of the fish community. Excluding incidental species, 94% of the fish species were native to …
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