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Role of Dreissena as ecosystem engineers : effects to native bioturbators and benthic community structure and function /DeVanna, Kristen M. January 2006 (has links)
Thesis (M.S.)--University of Toledo, 2006. / Typescript. "Submitted as partial fulfillment of the requirements for The Master of Science Degree in Biology (Ecology-track)." Bibliography: leaves 26-34.
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Sensitivity of early life stages of freshwater mussels (Bivalvia: Unionidae) to copper /Jacobson, Peter James, January 1990 (has links)
Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1990. / Vita. Abstract. Includes bibliographical references (levaes 151-161). Also available via the Internet.
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Conservation genetics of two rare freshwater mussels: the tidewater mucket (Leptodea ochracea) and the yellow lampmussel (Lampsils cariosa) /Kelly, Morgan W. January 2004 (has links)
Thesis (M.S.) in Wildlife Ecology--University of Maine, 2004. / Includes vita. Includes bibliographical references (leaves 65-76).
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Variability in and coupling of larval availability and settlement of the mussel Perna perna : a spatio-temporal approach /Porri, Francesca. January 2003 (has links)
Thesis (Ph. D. (Zoology & Entomology))--Rhodes University, 2004.
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Isolation and characterization of repetitive DNA sequences and their use in DNA fingerprinting and the population genetics of Perna viridis (L.) (Bivalvia : Mytilidae) /Chan, May-ngor. January 1997 (has links)
Thesis (M. Phil.)--University of Hong Kong, 1998. / Includes bibliographical references (leaves 78-92).
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The population structure and habitat requirements of the freshwater pearl mussel, Margaritifera margaritifera, in ScotlandTarr, Elizabeth Clare. January 2008 (has links)
Thesis (Ph.D.)--Aberdeen University, 2008. / Title from web page (viewed on Apr. 20, 2009). Includes bibliographical references.
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Eicosanoid biosynthesis in the gonads of the mussel Mytilus edulisCoffa, Gianguido January 2001 (has links)
No description available.
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Relationship Between the Invasive Eurasian Milfoil (Myriophyllum spicatum L.) and Macrophyte Diversity Across Spatial ScalesGräfe, Simon January 2014 (has links)
The effect of the invasive macrophyte Myriophyllum spicatum L. on native macrophyte diversity was studied across 21 lakes at small (1 quadrat) and large (18 quadrats) scales and in mesocosms. No relationship was observed between M. spicatum and native richness at either spatial scale, or native evenness at small scales; however, at large scales native evenness was negatively correlated with the cover of M. spicatum in lakes. This suggests that M. spicatum can grow in lakes with other dominant species, contrary to predictions that invasive species will outcompete other dominant species. While macrophyte communities were mainly distinguished by environmental and spatial variables, M. spicatum was a significant predictor of the remaining variation in community composition. Within lakes M. spicatum occurred in deep water apart from other species; however, competition studies in mesocosms did not find sufficient evidence that this isolation was due to superior competitiveness.
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The effect of salinity, temperature, season and intertidal height on calcium uptake by Mytilus edulis (Linnaeus)Robinson, Donald C. E. January 1982 (has links)
This study has shown that season, salinity, temperature and intertidal height all affect the rate up calcium uptake by mussels. For summer-adapted mussels, calcium uptake was found to be temperature dependent over the range of acute temperatures measured (1°-23°C). When subjected to a range of salinities over a three week period, summer-adapted mussels showed calcium-uptake rates which were salinity dependent from 25%-75% SW, and which did not show any increase in uptake rate in salinities greater than 75% SW. For winter-adapted mussels, calcium uptake was temperature independent over a temperature range from 5°-l7°C. At higher and lower temperatures, uptake was reduced. When subjected to a range of salinities over a three-week period, winter-adapted mussels were also unable to compensate for the lower concentration of calcium in the seawater, and did not show any increase in the uptake rate in salinities greater than 75% SW.
It was found that high and low intertidal mussels had different calcium uptake rates, and that transplantation could alter the uptake rate of transplanted mussels to the uptake rate of untransplanted controls. In the intertidal zone a gradient of shell size was found, which could be associated with the change in uptake range over the intertidal range. Differences in immersion time between the two. sites could not explain all of the differences in uptake rate, but high intertidal mussels were found to have less total dry weight of soft parts than low mussels, and correcting for this difference accounted for the
the remainder of the difference in calcium-uptake rate between
the two sites.
The soft parts of the mussel were found to become saturated with ⁴⁵Ca after four hours, while the shell accumulated calcium for the duration of the experiment. The mantle and gill tissue held the same amount of calcium when corrected for differences in weight, while the viscera held a greater pool of calcium. Accounting for real increases in the amount of calcium accumulated by the shell showed that the uptake rates reported in this study are about 59% of the absolute uptake rates. / Science, Faculty of / Zoology, Department of / Graduate
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The Unioninae (Mollusca, Pelecypoda, Naiadacea) of Fishery Bay, South Bass Island, Lake Erie /Stansbery, David H. January 1960 (has links)
No description available.
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