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Showing 1 to 20 of 47 for “"fish growth"”.
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Snail grazing effects on the composition and metabolism of benthic diatom communities and subsequent effects on fish growth
… of nutrient cycling stimulates algal growth, but this effect is overwhelmed at higher densities by overgrazing and stirring inhibition. The dominant benthic algal group in the containers were pennate diatoms. Grazed containers contained a larger percentage of the non-motile classes of …
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Growth Correlates of Several Lotic Fishes
Relationships between growth rates of three fish species and stream morphology, riparian type, and fish community structure were examined in South Dakota wadeable streams during summer 2002 and 2003. Study sites represented all physiographic provinces in South Dakota and a variety of riverine …
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An Ecological Approach to Feed Management in Fish Rearing Ponds
Channel catfish (Ictalurus punctatus) has been the most important cultured fish in the United States by yield and commercial value for the past 60 years, and at least 31 states stock this species into lakes and reservoirs as a sportfish. Catfish culturists have historically used a “black box” …
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Determination of the effects of pulse starches (pea, lentil and faba bean) versus cornstarch on growth performance and glucose tolerance in rainbow trout (Oncorhynchus mykiss)
… for humans and terrestrial animals. However, in fish, protein and lipid are more efficiently used for energy than carbohydrates. Despite this, stud-ies have shown that diets with an appropriate amount of carbohydrate improve growth in fish. Therefore, as a first step in examining what is already …
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Relationships between climate, growth and fisheries production in a commercially exploited marine fish
Climate variability can affect fish populations and fisheries production in numerous ways, including inducing measurable fluctuations in fish growth, condition, and fisheries production. Unfortunately, mechanisms driving these linkages are poorly understood for most exploited species, which hinders …
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Investigation into three potential modifying factors in larval fathead minnow (Pimephales promelas) growth and survival
The responses of larval fish to toxicants in subchronic toxicity tests may be modified by events and stressors not associated with the toxicants themselves. In the following work, three potential modifying factors related to larval fish growth, survival, and response to toxicant stress were …
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Food, Growth, and Reproduction of White Crappies (Pomixis Annularis) and Black Crappies (P. Nigromaculatus) in Lake Poinsett, South Dakota
The food habits, food selectivity, growth, condition, and population structures of the white crappies (Pomoxis annularis) and black crappies (P. nigromaculatus) in Lake Poinsett, South Dakota, were studied from May, 1975, to May, 1976. The total food volume of 173 adult white crappies consisted of …
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Effects of chronic, sublethal ferric iron exposure on the critical swim speed of rainbow trout (Oncorhynchus mykiss) and critical thermal maximum of cutthroat trout (Oncorhynchus clarkii)
… gills were examined for histological changes and fish growth was measured as endpoints. No significant changes in Ucrit growth or gill histology were found in the first experiment, although suggestive trends were noted. The Ucrit experiment was challenging on multiple levels, in part due to the …
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Variability in Growth and Age of the Duskystripe Shiner Along a Stream Gradient
… was conducted to describe the variability in growth and age structure of the duskystripe shiner (Luxilus pilsbryi) along a stream gradient. Duskystripe shiners (n= 600) were sampled from eleven sites representing 4 stream orders. Fish were collected in the spring of 2010 using seining …
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A comparison of growth rates of coarse fish in gravel-pit lakes in south-east England and of population structure in selected lakes
Age and growth rates of the coarse fish of 39 gravel-pit lakes in South-East England are compared. Species composition and growth rate are very variable, the commonest species being roach (Rutilus rutilus L.), bream (Abramis brama L.), tench (Tinca tinca L.), perch (Perca fluviatilis L.) and pike …
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Modeling thermal environment of a recirculating aquaculture system facility
Economic viability of fish production in recirculating aquaculture system (RAS) facility depends on minimizing the energy requirements of operating such facilities. The fish growth and water quality aspects of RAS have been studied in considerable details. However, the understanding of the thermal …
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Recovery From and Effects of a Catastrophic Flood and Debris Flow on the Brook Trout (<i>Salvelinus fontinalis</i>) Population and Instream Habitat of the Staunton River, Shenandoah National Park, VA
… trees from the riparian zone, and eliminated fish from a 1.9km section of the stream. By June 1998, both young-of-year (YOY) and age 1+ <i>S. fontinalis</i> had recolonized the debris flow affected area. The event provided a rare opportunity to examine recovery of the <i>S. fontinalis</i> …
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Evaluation of a 23-cm (9-in) Minimum Length Limit for Black and White Crappies in Lake Alvin, South Dakota
The South Dakota Department of Game, Fish and Parks (SDGFP) implemented a 23-cm (9-in) minimum length limit for black Pomoxis nigromaculatus and white P. annularis crappies in 36-ha Lake Alvin , South Dakota beginning 1 January 1996. Both relative abundance [catch per unit effort (CPUE)] and size …
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INTERANNUAL VARIABILITY IN MORPHOMETRIC CONDITION OF LARVAL FISH AS A FUNCTION OF ENVIRONMENTAL VARIABLES IN BEAUFORT, NC
… influenced by oceanic conditions experienced by fish larvae. Variations in larval abundance and condition have not been consistently related to juvenile abundance and recruitment for many fisheries species. By studying how environmental factors affect larval fish condition, we may be able to …
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Effects And Interactions Of Antibiotic, Butyrate, And Temperature On Sailfin Molly (Poecilia Latipinna) Metabolism And Gut Microbiota
… microbiome dynamics is crucial for optimizing fish health and growth, particularly in aquaculture settings. This study examines the effects of antibiotic, butyrate, and temperature treatments on the metabolism and gut microbiota of sailfin molly (Poecilia latipinna) alone and in combination. …
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Feeding of Black Bullheads Ictalurus Melas (Rafinesque) in Experimental Cages
… July 25, 1969, through October 21, 1969. The fish, collected from Lake Poinsett, were grown in five cages each with a water volume of 2.6 m³ and five cages each with a volume of 3.86 m³. The larger cages contained nearly 60 percent of the total 323 m³ of water volume in the cages. No …
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Zooplankton and Ichthyoplankton in a Power Plant Cooling Reservoir
… of the reservoir. Spawning times and larval fish growth rates were similar to those in other northern lakes. The number of ichthyoplankton in entrainment water is similar to that estimated in reservoir. Lepomis spp. made up 90.5% of the total number entrained. An estimated 100% of all …
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An Evaluation of the Fishery Resource in a portion of the James River, South Dakota Scheduled for Channel Modification
The fish populations of a 193 km (120 mi) section of the James River between Tacoma Park and Redfield, South Dakota that is scheduled for stream modification under the Oahe Irrigation project were evaluated from October 74 to July 76. Twenty-two species of fish were captured in the James River …
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A mathematical model for simulating the bioenergetics and growth of largemouth bass (Micropterus salmoides)
Observed growth in weight of an individual fish is the result of an interaction between the environment and the fish's bioenergetic system. A species-specific model is presented which simulates the bioenergetics and growth of largemouth bass (Micropterus salmoides). The model is used to simulate …
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Growth and mortality of buka fish, lates stappersii (boulenger, 1914) in the southern part of lake Tanganyika, Zambia.
Population growth parameters and mortality rates of Lates stappersii were investigated for the southeast and southwest arms of Lake Tanganyika, Zambia from April, 2022 to August, 2022. Exploitation ratio was studied. Furthermore, water quality parameters were investigated. Fish samples were …
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