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Showing 1 to 20 of 58 for “"freshwater mussel"”.
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A Quantitative Survey of the Freshwater Mussel (Unionidae) Fauna in Honeoye Creek, New York
… needed for monitoring the status and health of freshwater mussel communities in Honeoye Creek and other watersheds in New York State in the future. Quantitative surveys were performed at 20 sampling sites to assess the status of freshwater mussels in Honeoye Creek. Fifteen species were observed …
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Development and validation of standardized sampling protocols for assessing freshwater mussel populations in Missouri
Freshwater mussels are among the most threatened aquatic fauna in North America. Given the need for continued monitoring of threatened mussel species, an evaluation of the effectiveness of metrics from visually-based sampling methods is an essential step in assessing populations. We surveyed 14 …
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Effects of Cadmium on Calcium homeostasis and physiological conditions of the freshwater Mussel Anodonta anatina
Summary As the result of the worldwide decline of freshwater mussels, some significant wetland and riverine habitats are threatened. It has been shown that cadmium (Cd), among other heavy metals, is present at surprisingly high levels in freshwater pearl mussels from mountain brooks in central …
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Genetic and Morphological Analyses of Three Freshwater Mussel Species in Isolated River Drainages Across Appalachia
… of Kentucky and Tennessee are known for their freshwater mussel species diversity. These river systems harbor dense populations of freshwater mussels that have significant impacts on surrounding ecosystems; however, due to their sedentary lifestyles, freshwater mussels are particularly …
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Genetics, demography and modeling of freshwater mussel (Bivalvia: Unionidae) populations in the Clinch River, U.S.A.
Genetic variation was examined in two endangered mussel species, Epioblasma brevidens and E. capsaeformis, and a common species Lampsilis fasciola, in the Clinch River, TN, by screening mitochondrial DNA (mtDNA) sequences and nuclear DNA microsatellites. These species use fish hosts with varying …
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Sampling adequacy of freshwater mussel surveys and variation of mussel species richness in Illinois wadeable streams
Freshwater mussels are one of the most imperiled groups of animals in North America. Effective conservation strategies and resource management of freshwater mussels require adequately characterizing local mussel assemblages. However, sampling protocols for mussel surveys, including sampling …
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Identification of Host Fish and Experimental Culture of Juveniles for Selected Freshwater Mussel Species in Virginia
… design were tested for suitability in juvenile mussel culture. In one system (high maintenance), juveniles of the wavy-rayed lampmussel, Lampsilis fasciola, were kept in culture dishes, and in the other system (low maintenance), the juveniles were kept in culture beds. At the end of the 16-wk …
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Population demographics of six freshwater mussel species (Bivalvia: Unionidae) in the upper Clinch river, Virginia and Tennessee
… distributions, and mortality rates of six mussel species were examined at four sites in the Clinch River, Virginia and Tennessee, to identify potentially impacted sites in the upper river. The bioaccumulation of copper in mussel shells also was examined as a possible contributing factor to …
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The capacity of native fish and a freshwater mussel species to control suspended solids in wastewater stabilization ponds
… of several native fish species and the freshwater mussel, <i>Elliptio complanata</i>, to reduce suspended solids and phytoplankton was compared in laboratory and field enclosure experiments. Fathead minnows (<i>Pimephales promelas</i>), gizzard shad (<i>Dorosoma cepedianum</i>), and the …
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Spatial Distribution of Fine Sediment and Juvenile Freshwater Mussel Settling in the Gravel Bedded Dan River, North Carolina
… were related to the settling of juvenile freshwater mussels to predict areas in the reach where mussels may be able to settle based on the local shear velocity. Our model results suggest that there are areas in the margins of the channel that will allow juvenile mussels to settle when …
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River-Floodplain Connectivity and Sediment Transport Potential: Applications to Sediment Dynamics on Floodplains and Juvenile Freshwater Mussel Settling in Rivers
… sediment transport and deposition, and juvenile mussel settling in three river systems in the US. A two-dimensional hydrodynamic model was developed and simulated model results were coupled with field measurements to study river-floodplain systems of the East Fork White River in Indiana, South …
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Distributional analysis of the freshwater mussel fauna of the Tennessee River system, with special reference to possible limiting effects of siltation
Mussel studies in the Tennessee River drainage (1973 - 1982) examined ecology and distribution and investigated factors limiting to distribution. This river system presently supports 71 freshwater mussel species, 25% of which are endemic to the Cumberlandian Region. Species have been extirpated …
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Geochemical and Taphonomic Signatures of Freshwater Mussel Shells as Evidence of Mercury-Related Extirpations in the North Fork Holston River, Virginia
This study utilized freshwater mussel shells to assess the role of mercury contamination in the North Fork Holston River, an aquatic habitat affected by extensive extirpations of mussel populations starting in the early 1970's. Mussel shells (n=366) collected from 5 sites, upstream and downstream …
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Development of DNA markers and the genetic analysis of seven populations of the freshwater mussel Lampsilis radiata siliquoidea (Bivalvia: Unionidae) in north central Minnesota
… in seven different sized populations of the freshwater mussel Lampsilis radiata siliquoidea (Bivalvia: Unionidae) in north central Minnesota. Random amplified polymorphic DNA (RAPD), heteroduplex, and single-stranded conformational polymorphism (SSCP) analyses were performed using nuclear DNA …
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Assessment of morphological and molecular genetic variation of freshwater mussel species belonging to the genera Fusconaia, Pleurobema, and Pleuronaia in the upper Tennessee River basin
Select freshwater mussels in the genera Fusconaia, Pleurobema, and Pleuronaia were collected primarily in the upper Tennessee River basin from 2012 to 2014 for phylogenetic and morphological assessments. Freshwater mussels in these genera are similar in appearance, hence the need for phylogenetic …
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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
Freshwater mussel species in the genera Fusconaia and Pleurobema are particularly challenging to identify in the field. In this study, mussels from these genera were collected from the Green River, Kentucky for genetic and morphological analyses. I used molecular markers to detect any cryptic …
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Modeling the Biogenic Effects of Freshwater Mollusks on Bedload Transport and Dynamics in a Gravel-Bedded Stream
… the influence of ecosystem engineers such as the freshwater mussel has been a common source of interest in ecohydrogeomorphic literature, limited by methods and complexity of application. This thesis investigates the influence of biogenic variables on sediment characteristics, the interaction of …
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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)
… and characterized for the endangered oyster mussel Epioblasma capsaeformis from the Clinch River, TN. Microsatellite loci also were amplified for individuals collected from the following additional populations or species: (1) E. capsaeformis from Duck River, TN; (2) E. florentina walkeri from …
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A Quantitative Survey of the Freshwater Mussel Fauna in the Powell River of Virginia and Tennessee, and Life History Study of Two Endangered Species, Quadrula sparsa and Quadrula intermedia
… of 23 species was collected at PRKM 152.6. Mussel abundances (mussels/person-h and mussels/m2) ranged from 0.33 to 21.98 mussels/person-h and 0.00 to 2.24 mussels/m2. Recent recruitment (individuals < 40 mm, depending on the species) was observed for 15 species, including the endangered …
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