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 13 of 13 for “"fish hosts"”.
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Investigating trophic interactions between parasites and their marine fish hosts using stable isotope analysis
… trophic interactions between parasites and their hosts need to be assessed. Here, I investigated host-parasite interactions using stable isotope analyses on a broad range of marine fish hosts and their associated copepod and monogenean gill parasites. The study also provides insight into the gill …
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Population biology and fish hosts of several federally endangered freshwater mussels (Bivalvia: Unionidae) of the upper Tennessee River drainage, Virginia and Tennessee
… strigillata</i>. Population assessments and fish host identifications were completed for the tan riffleshell and purple bean populations. Host fish for <i>E. f. walkeri</i> were limited to the banded and mottled sculpin, greenside darter, redline darter, fantail darter, and snubnose darter. …
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The parasites of Callorhinchus capensis (St. Joseph elephant fish).
… relationships between the parasites and their fish hosts in terms of sex, size and the condition factor of the fish were investigated.
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Life history of the endangered fine-rayed pigtoe pearly mussel, Fusconaia cuneolus (Lea, 1840), in the Clinch River, Virginia
… of gravidity and glochidial release, required fish hosts, and age and growth characteristics of Fusconaia cuneolus were studied in the upper Clinch River, Virginia during 1986 and 1987. This summer brooder is gravid from mid-May through late July, releasing most glochidia in midJune. Gills of …
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Distribution and life history of the endangered James Spinymussel, pieurobema collina (bivalvia: unionidae)
… gravidity and glochidial release periods, fish host requirements, age class structure, growth characteristics, and juvenile survival. Stream surveys conducted at 243 sites in 20 counties revealed new populations of this species in three subdrainages (Catawba Creek, Pedlar River, and Mechums …
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Reproductive Biology of the Rabbitsfoot Mussel (Quadrula Cylindrica) (Say, 1817) in the Upper Arkansas River System, White River System and the Red River System
… larvae per female. I compared potential fish hosts in the Spring River (KS upper Arkansas River system), the Little River (AR Red River system) and the Black River (AR White River system). Blacktail shiner (Cyprinella venusta) from the Black River and Little River and cardinal shiner …
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Host Specificity of Freshwater Mussels: a Critical Factor in Conservation
… a unique life cycle in which they parasitize a fish host during their larval stage. While fish hosts of many mussel species have been identified, little is known of variation in host-specificity among populations, within species. I investigated host compatibility in two populations of the …
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Genetics, demography and modeling of freshwater mussel (Bivalvia: Unionidae) populations in the Clinch River, U.S.A.
… nuclear DNA microsatellites. These species use fish hosts with varying dispersal capabilities, ranging from low, moderate, and high, respectively. Patterns of mtDNA polymorphism exhibited different trends for long-term population sizes for each species during the Holocene (~10,000 ya to …
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Reproductive Biology of the Flat Floater Mussel, Anodonta Suborbiculata, Say, 1831 (Mollusca: Unionidae)
… 1995 and 1996. Drop-off of most juveniles from fish hosts occurred between March 17 and April 18 in 1996. Natural glochidial cysts of A. suborbiculata were observed on the fins of gizzard shad, white crappie, largemouth bass, bluegill, golden shiners, and freshwater drum, but not on common carp, …
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Ecological consequences of indigenous and non-indigenous freshwater fish parasites.
… considerable consequences for their freshwater fish hosts, irrespective of whether they are intermediate or final hosts. The ecological consequences of infection arise from processes including parasite manipulation, where the parasite manipulates the host to increase their chance of transmission …
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Assessing Freshwater Mussels (Bivalvia: Unionidae) in South Dakota and Identifying Drivers of Assemblage Variation
… were significant in driving the assemblages. Fish hosts were found not to limit mussel distributions, instead, widespread land conversions to cultivated crop agriculture may be influencing assemblage distributions. Priority conservation areas were determined via a previously published ranking …
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Studies of the host-microbe relationship in aquaculture-raised animals
Aquatic animals, such as fish and shellfish, provide important economic and nutritional benefits for human society. Due to overexploitation of natural fish sources through traditional wild-caught fisheries, aquaculture (generally described as fish farming or culturing) has grown into an …
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Biodiversity and systematics of parasitic Crustacea infesting southern African freshwater fishes
… them to thrive in an array of habitats and hosts. Freshwater parasitic crustaceans are mostly found attached to the external surfaces of their host. These attachment structures are also adapted to the sites of infestation on their hosts. As a result of the pathological impacts of certain …