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.
Results
Showing 1 to 15 of 15 for “"fish host"”.
-
Life History Observations and Determination of Potential Host Fish Species for Chipola Slabshell, Elliptio chipolaensis
… from the female in conglutinates The potential fish host species for Elliptio chipolaensis are the bluegill and redbreast sunfish. Sixty percent of the bluegill successfully transformed E. chipolaensis glochidia into juvenile mussels while 80% of the redbreast sunfish were successful.</p>
-
SCALE-DEPENDENT VARIATION IN MOLECULAR AND ECOLOGICAL PATTERNS OF INFECTION FOR ENDOHELMINTHS FROM CENTRARCHID FISHES
… of helminths in a widely distributed freshwater fish host. Equally rare are studies considering both large- and small-scale patterns of infection of helminth communities in a widely distributed aquatic host(s). Vanishingly few studies exist making large-scale population-level comparisons of …
-
Ebonyshell Host Identification and Reproductive Biology
… the effects of navigational dams on its primary fish host, the skipjack herring. I investigated the reproductive biology of ebonyshell to understand factors limiting its reproduction and to investigate the possibility of captive propagation for population restoration. Ebonyshell have been …
-
Using parasite communities to discriminate between sympatric morphs of threespine sticklebacks (Gasterosteus aculeatus) in lake Þingvallavatn, Iceland
Fish in lake systems can undergo adaptive radiation when different groups within a species occupy distinct parts of the lake, reducing competition between them and leading to resource-based polymorphism. This enables the morphs to specialize within their habitats, giving rise to rapid divergence, …
-
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 …
-
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. …
-
Studies on the biology of Cyathocephalus truncatus (Pallas, 1781) (Cestoda : Spathebothridea) in its fish and crustacean hosts
… Eastburn Beck and Driffield Beck,all fish were found to be infected with the cestode Qvathocephalus trunca. A prevalence of 2.2% was recorded for the procercoids of C.truncatus in the amphipod crustacean Gammarus pulex in the same habitat. Other helminth parasites recorded in both fish …
-
Community Composition and Function of the Hindgut Microbiome in Seaweed-Eating Marine Fish
… short-chain fatty acids (SCFAs) that benefit the host. Microbial communities assist the fish host overcome nutritional limitations (e.g., protein, energy and vitamins). It is unclear which taxonomic groups contribute to the break down of dietary macroalgae along the fish gut and how they help …
-
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 …
-
Ecto-and endo- parasites of silver kob (Argyrosomus Inodorus) from northern Namibia (21º 24ºS)
… been identified as a candidate species for finfish culture due to its outstanding qualities. There is little information available on the health of this species, especially parasite infestation that can pose a threat to fish cultivation and therefore to the success of mariculture. This study …
-
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 …
-
A Holistic Approach to Taxonomic Evaluation of Two Closely Related Endangered Freshwater Mussel Species, the Oyster Mussel (Epioblasma capsaeformis) and Tan Riffleshell (Epioblasma florentina walkeri) (Bivalvia: Unionidae)
… Quantitative genetic variation was observed in fish host specificity, with transformation success of glochidia of E. capsaeformis significantly greater (p<0.05) on the greenside darter Etheostoma blennioides, and that of E. f. walkeri significantly greater (p<0.05) on the fantail darter E. …
-
Biology, Captive Propagation, and Feasibility of Pearl Culture in the Pink Heelsplitter (Potamilus Alatus) (Say, 1817) (Bivalvia: Unionidae)
… (Sciaenops ocellatus) was identified as a new fish host for P. alatus, as 48 active juveniles were transformed by this species, which is not a natural host. Four glochidia were observed on the fins versus 2,307 on the gills of five red drum. Freshwater drum also was verified as a suitable host …
-
Spironucleus Vortens of the Freshwater Angelfish (Pterophyllum scalare): Growth Requirements, Chemotherapeutants, Pathogenesis and Immunity
… been reported in vertebrates, particularly in fish. This suggests a potentially important role of these parasites in the fish culture industry. Though the majority of hexamitids are not known to cause disease in their vertebrate host, those that have been documented as associated with disease …