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 18 of 18 for “"host fish"”.
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Host Fish Assessment and Gravidity for the Mussel Elliptoideus sloatianus
… suitable habitat and the potential blockage of host fish passage into areas where the mussel lives. For this study, we located three populations of £. sloatianus in the Flint River in southwest Georgia. Gravid mussels were collected in late winter through early spring when the river was above …
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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>
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Identification of Host Fish and Experimental Culture of Juveniles for Selected Freshwater Mussel Species in Virginia
Host fishes for the state-endangered Tennessee heelsplitter (Lasmigona holstonia) and state-threatened black sandshell (Ligumia recta) were identified through induced infestations of glochidia on potential hosts. Largemouth bass (Micropterus salmoides), yellow perch (Perca flavescens), convict …
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Evaluation of immunological techniques for host fish identification, and cryopreservation of embryos for conserving rare freshwater mussels
… to and become encysted in the gills or fins of host fish species. The immune responses of the host fish to the parasite affects the susceptibility of the fish to glochidia of different mussels. The immune response provides an opportunity to identify which fish species are hosts. The number and …
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Restoration of the endangered Cumberland elktoe (Alasmidonta atropurpurea) and Cumberland bean (Villosa trabalis) (Bivalvia: Unionidae) in the Big South Fork National River and Recreation Area, Tennessee and Kentucky
… This study was conducted to identify host fish for Cumberland elktoe (Alasmidonta atropurpurea) and Cumberland bean (Villosa trabalis), to determine suitable juvenile culture conditions for Epioblasma brevidens and V. trabalis, and to locate sites important to future mussel restoration …
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Partitioning along reproductive niche dimensions in sympatric New Zealand freshwater bivalve species
… and complex symbiotic life-phase dependent on host-fish. Although new data on their reproductive biology is being increasingly documented, particularly in the Northern Hemisphere, major gaps remain in New Zealand where two threatened Hyriidae, Echyridella aucklandica and E. menziesii, can …
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Acquired and Cross Immunity of Largemouth Bass (Micropterus Salmoides) to the Glochidia Larvae of Unionid Mussels
… (family Unionidae) are temporary parasites of host fish, where they are contained within dermal cysts. The immune responses of largemouth bass (Micropterus salmoides) to glochidia of the broken rays mussel (Mapsilis reeveiana) were investigated to determine 1) the persistence of acquired …
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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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Ultrastructure and function of the gastrointestinal tract in marine herbivorous fishes
… of temperate and tropical marine herbivorous fishes was described using histological and ultrastructural approaches. Radial distribution of endosymbiotic microbiota in the hindgut, and the association of microbiota with degradation of algal fragments were also examined. The overall aim was to …
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Sensitivity of early life stages of freshwater mussels (Bivalvia: Unionidae) to copper
… to the encapsulation of the glochidium by the host fish. Juvenile mussels reduced their activity during 24-hour exposures to copper concentrations as low as 17 to 24 ug/L and concentrations of 30 to 42 ug/L caused mortality. Juvenile mussels and glochidia within the marsupia are probably the …
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Population Biology of the Tan Riffleshell (<I>Epioblasma florentina walkeri</I>) and the Effects of Substratum and Light on Juvenile Propagation
… in culture environments. Infestations of host fish (fantail darters, <I>Etheostoma flabellare</I>), obtained from four river drainages, with tan riffleshell glochidia showed that significantly more juveniles transformed per fish from infestations on fantail darters from Indian Creek (mean …
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Immunological responses of fishes to glochidia of freshwater mussels
… immunological aspects of the interaction between fish and glochidia were studied using glochidia of the Alabama rainbow mussel (Villosa iris). Tested host species was the rock bass (Ambloplites rupestris) and non-host fishes were common carp (Cyprinus carpio) and goldfish (Carassius auratus). …
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Occurrenceand distribution of fish parasites of potential threat to the acquaculture sector along the okavango river, Namibia
… parasites. Previously studies were conducted on fish parasites on the Okavango Delta, Botswana. This thesis is the first on fish parasites in the Kavango River, Namibia. The study aims to identify parasites occurring on commercially farmed fish i.e.: Oreochromis andersonii, Tilapia rendalli and …
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The effects of natural and anthropogenic stressors on the stress response and tissue-level response in teleost fish
… studies allow for the understanding of how fish are affected in situ, where multiple natural and anthropogenic stressors exist. Using laboratory and field-based experimental design, physiological indices of fish health were measured in fish exposed to natural and anthropogenic stressors in …
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Development of Molecular and Morphological Resources for Identification and Monitoring of Freshwater Mussel Species in the Genera Fusconaia and Pleurobema in the Green River, Kentucky
… studies to assess life history, habitat, host-fish availability, and current reproduction of these mussels in the Green River.
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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 …
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Occurrence and Impact of the Asian Fish Tapeworm Bothriocephalus acheilognathi in the Rio Grande (Rio Bravo del Norte)
… as an incidental hitchhiker of its native host, Ctenopharyngodon idella (Andrews et al. 1981; Hoffman 1999). It is established in ten states in USA with the most recent discovery in the Rio Grande in Texas (Bean et al. 2007). Occurrence of this exotic tapeworm in the Rio Grande potentially …
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Occurrence and Impact of the Asian Fish Tapeworm Bothriocephalus acheilognathi in the Rio Grande (Rio Bravo del Norte)
… as an incidental hitchhiker of its native host, Ctenopharyngodon idella (Andrews et al. 1981; Hoffman 1999). It is established in ten states in USA with the most recent discovery in the Rio Grande in Texas (Bean et al. 2007). Occurrence of this exotic tapeworm in the Rio Grande potentially …