Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 31 for “"cyprinids"”.
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Cheating and Selfishness in Reproductive Interactions among Nest Associative Cyprinids
… the nest association between Nocomis and other cyprinids. I assessed the role of host parental care while testing for the selfish-herd effect. Additionally, I examined multiple nest associates in order to elucidate potential cheaters. I utilized gonadosomatic index (GSI) to compare reproductive …
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The Importance of Cover and Other Habitat Features to The Distribution and Abundance of Illinois Stream Fishes (Sunfish, Cyprinids)
… more often associated with these features than cyprinids. Depth was a better predictor of fish distribution than cover, but correlations between fish abundances and habitat features varied among streams and years. In general, fish were more strongly associated with habitat features in …
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The life cycle of the parasite Pomphorhynchus tereticollis in reference to 0+ cyprinids and the intermediate host Gammarus spp in the UK.
… uses a Gammarus spp as an intermediate host and cyprinids and salmonids as final hosts although the main hosts are Squalis cephalus (S. cephalus) and Barbus barbus (B. barbus). Research on P. tereticollis has primarily focused on mature fish while there is limited research on 0+ fish and the …
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The influence of hydraulics, hydrology and temperature on the distribution, habitat use and recruitment of threatened cyprinids in a Western Cape river, South Africa
This study aims to explore the relationships between river flow and fish ecology in the context of the riverscape model of river ecosystems by examining the seasonal distribution of two endangered fish species, i.e. the Clanwilliam yellowfish and Clanwilliam sawfin, in relation to their physical …
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Distribution of larval fishes in the Winfield Pool, Kanawha River, and direct impacts of commercial navigation traffic on larval fish survival
… by sampling two sites with bongo and push nets. Cyprinids, clupeids, and <i>Aplodinotus grunniens</i> dominated collections. Main channel densities were a fraction of the densities along the shoreline, indicating the importance of the shoreline as a nursery. Diel trends in abundance were evident …
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Factors affecting the dispersal of coarse fish
… behaviour and ecology of wild and stocked cyprinids in floodplain rivers, especially under the influence of elevated flows. This study examined the factors affecting the lateral and longitudinal dispersal of juvenile and adult (wild and stocked) coarse fish in three lowland river …
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Growth, Food Habits, and the Relative Effectiveness of Stocking Rainbow Trout (Salmo gairdneri) in South-Central South Dakota
… were coleopterans, dipterans, odonates, and cyprinids. Odonates and cyprinids were more frequently consumed by larger trout. The maximum surface temperatures recorded were 26.0 C in 1977 and 28.5 C in 1978. All ponds contained water with temperatures and dissolved oxygen levels within the …
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Effects of acid mine drainage on limnological conditions and fish assemblages in the Cumberland Plateau region of the North Chickamauga Creek System, Tennessee
… (2 species) and Centrarchidae ( 6 species). Cyprinids accounted for 93% of the catch at the reference sites, while centrarchids comprised 92% of the catch at AMD sites. Fish species richness and abundance (cyprinids and total) estimates averaged lower at A.MD than reference sites. Stream pH …
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Distributions, Assemblage Structure, and Habitat Associations of Fishes in Two Streams of the Red Bird River Watershed, Kentucky
… riffles and runs while avoiding pools; whereas cyprinids selected pools while avoiding riffles and runs. Elisha Creek produced more total individuals; but overall the distributions, assemblage structures, and habitat associations exhibited by the fish communities in both Gilbert's Big Creek and …
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Effects of urbanization on instream habitat and fish assemblages in the chattanooga metropolitan area, Tennessee-Georgia
… correlate d with declines of the proportions of cyprinids and percids, as well as an increase in centrarchid proportions. Findings from this study suggest that urban development has induced adverse transformations in both habitat quality and biotic health in Chattanooga area streams. Percent …
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Habitat use by fishes of the New River, West Virginia
… in the habitats of the study area. The cyprinids and percis preferred shallow areas, but preferences for velocity differed among the species and lifestages. Spawning and habitat preferences of the endemic bigmouth chub, Nocomis platyrhynchus, were described. Bigmouth chubs used areas …
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Survey of the Fishes and Habitat of Western South Dakota Streams
… 34 species (9 families) were collected. Native cyprinids dominated the fish community. Cyprinids accounted for 85.4% of the fish community and catostomids accounted for 4.9%. Relatively low watershed development and the presence of few introduced species accounted for the persistence of the …
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Fish-Habitat Associations in Small Backwaters of the Upper Missouri River, North Dakota
… backwaters; one group was comprised of cyprinids and catostomids, while the other consisted of centrarchids and percids. The two assemblages generally preferred different habitat characteristics and were rarely found in large numbers together. The cyprinid-catostomid assemblage tended to …
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Fish and Habitat Relations at Multiple Spatial Scales in Cheyenne River Basin, South Dakota
… fishes, relict fish species, and fluvial cyprinids indicating that tributaries contain habitats for a diversity of fish species. River reaches had the highest richness and similarity scores indicating a stable source habitat for small stream assemblages. Thus, conserving diversity of small …
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A mechanistic framework for understanding prairie stream fish distributions
… distributions of four pairs of congeneric cyprinids and found that species within each pair exhibited contrasting stream-size preferences. I then used field experiments to test for differences in individual-level performance between one pair of species (Pimephales notatus and P. vigilax) …
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A Survey of the Fishes and Habitat of the White River, South Dakota
… representing 20 species and five families. Cyprinids (74%) and Ictalurids (23%) were the dominant families and 79% of the catch was made up of flathead chub Platygobio gracilis (44%), channel catfish Ictalurus punctatus (22%), and plains minnow Hybognathus placitus (13%). Sturgeon chub …
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Effects of water color on food web structure in freshwater lakes
… species composition to brook trout, small native cyprinids, and bottom dwelling fish. While small chaoborids were unaffected by the presence of fish, larger species showed increased abundances in more colored lakes. Water color also influenced the vertical position of the zooplankton prey, …
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Early life history dynamics of a stocked striped bass (Morone saxatilis) population and assessment of strategies for improving stocking success in Smith Mountain Lake, Virginia
… quality diet of invertebrates and small, age-0 cyprinids, while large-mode juveniles consumed only larger, energetically more profitable age-0 alewives. This disparity in food habits, largely due to the inability of small-mode striped bass to consume distributionally- and …
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An ecosystem-based approach to balancing cage aquaculture, capture fisheries, and biodiversity conservation in Lake Victoria, Kenya
… eutrophic waters, indigenous catfishes and cyprinids were abundant, while Nile perch and haplochromines were abundant in the open less eutrophic waters. Along the inner gulf-open lake gradient, Nile perch population structure, size at 50% maturity, and feeding patterns differed. There were …
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Distribution and life history of the endangered James Spinymussel, pieurobema collina (bivalvia: unionidae)
… observations and laboratory tests confirmed that cyprinids serve as fish hosts for P. collina glochidia. Glochidia of the James spinymussel were identified on the common shiner (Notropis cornutus), rosyside dace (Clinostomus funduloides), bluehead chub (Nocomis leptocephalus), pumpkinseed (Lepomis …
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