Dissertations / Theses: 'Zebra mussels'

1

Frost, Paul Christopher. "Zooplankton in Western Lake Erie: before and after Zebra Mussels." Connect to resource, 1997. http://rave.ohiolink.edu/etdc/view.cgi?acc%5Fnum=osu1243355900.

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2

Gräfe, Simon. "Relationship Between the Invasive Eurasian Milfoil (Myriophyllum spicatum L.) and Macrophyte Diversity Across Spatial Scales." Thèse, Université d'Ottawa / University of Ottawa, 2013. http://hdl.handle.net/10393/30331.

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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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3

Patterson, Matthew Alan. "Energy Reserves in Native Freshwater Mussels (Bivalvia:Unionidae) with and without Attached Zebra Mussels: Effects of Food Deprivation." Thesis, Virginia Tech, 1998. http://hdl.handle.net/10919/46495.

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This project evaluated the feasibility of salvaging zebra mussel-infested freshwater mussels from their native habitat by determining 1) how zebra mussel infestation affects unionid feeding and body condition, 2) how starvation in quarantine affects body condition of unionids, and 3) what feeding regime maintain unionid condition in quarantine.

The effects of zebra mussel infestation on two mussel species were evaluated through glycogen analyses of mantle tissue and gut content analysis. Specimens of Amblema p. plicata (Say, 1817) and Quadrula p. pustulosa (I. Lea, 1831), collected from a heavily infested reach of the Ohio River in 1996, had significantly lower (p<0.05) glycogen levels than specimens collected from a low-infestation reach upstream. In 1996 and 1997, heavily infested Amblema p. plicata and Quadrula p. pustulosa had significantly less (p<0.01) organic matter and fewer algal cells in their guts than lightly infested specimens. In addition, gut contents of individual A. p. plicata contained significantly less (p<0.05) organic matter and fewer algal cells than the combined gut contents of all zebra mussels (18-33 mm in length) attached to their shells. Gut analyses also revealed significant diet overlap between native unionids and infesting zebra mussels. Thus, competitive interactions or interference by zebra mussels likely reduced unionid ingestion and consequently reduced glycogen stores.

During quarantine, unionids salvaged from a lightly infested area and starved for 30 days had glycogen levels that declined dramatically. After 30 days without supplemental feeding, mean glycogen levels of A. p. plicata declined 85%, and mean glycogen levels of Q. p. pustulosa declined 70%. Thus, feeding of unionids is necessary to maintain their condition during lengthy quarantine.

To determine the best feeding regime for unionids in quarantine, assimilation efficiencies and carbon budgets were established for the rainbow mussel, Villosa iris (Lea, 1829), using radio-labelled cultures of Neochloris oleoabundans (Chantanachat and Bold 1962) at three cell concentrations. Assimilation efficiencies for Villosa iris at 100,000cells/ml, 10,000 cells/ml, and 1,000 cells/ml were similar (45-56%); however, regardless of these similarities, assimilation efficiencies from this study indicate that Neochloris oleoabundans is readily assimilated (~50% AE) by Villosa iris . In addition, total assimilation was maximized at 100,000cells/ml, which indicates that Villosa iris has the greatest amount of energy available for growth, reproduction, and maintenance of condition in captivity at this cell concentration.

During a second quarantine experiment, specimens were provided with 100,000cells/ml of N. oleoabundans twice per day. Initial mean glycogen levels for Amblema p. plicata (9.4 + 2.4 mg/g) and Quadrula p. pustulosa collected from ORM 175.5 in July 1997 were not significantly different (p>0.3) than the mean glycogen levels of A. p. plicata and Q. p. pustulosa collected from the same site in July 1996. Glycogen stores of unionids entering quarantine, therefore, were similar in both the starvation and controlled feeding experiments. After 7, 14, and 30 days of controlled feeding in quarantine, mean glycogen levels of A. p. plicata and Q. p. pustulosa did not change significantly (p>0.1). Thus, quarantine protocol for salvaged native mussels should include the feeding of algae to captive specimens to sustain glycogen levels prior to relocation.
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4

Jokela, Anneli. "Factors affecting the impact of invasive mussels on native freshwater mussels." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=101146.

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Biological invasions are among the leading causes of species diversity loss; however, the impacts of invasion are context-dependent and can vary with the local environment. The mechanisms governing variation in impact and their relationship to specific abiotic and biotic factors remain largely unexplored. Recent local declines in native unionid mussels have been attributed to the invasion of North American lakes and rivers by the Eurasian zebra mussel ( Dreissena polymorpha), as a result of intense fouling of unionid shells by zebra mussels. My research investigated the role of abiotic and biotic factors in mediating the impact of zebra mussels on native mussels. I examined the impact of zebra mussels on unionids in a habitat thought to be suboptimal for zebra mussels and compared this to the impact observed in other invaded habitats. A predictive model relating fouling intensity to local environmental variables (calcium concentration, sediment particle size) was developed, and a predator-exclusion experiment was conducted to investigate the role of predation in mediating fouling intensity. Overall, I found that two abiotic factors of the local environment were significant predictors of fouling intensity and that relationships used to predict the impact of zebra mussels could be extended to a broader range of habitats.

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Pontius, Ruth Atkins. "The impact of zebra mussels (Dreissena polymorpha) on pelagic food webs." The Ohio State University, 2000. http://rave.ohiolink.edu/etdc/view?acc_num=osu1400072667.

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6

Regoli, Lidia. "Organotins in zebra mussels, Dreissena polymorpha, and sediments from the Saint-Lawrence River." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0018/MQ55088.pdf.

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7

Ma, Xuewen. "Bioprocessing of algae and transfer of hydrophobic contaminants by zebra mussels (Dreissena polymorpha)." Connect to resource, 1996. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1232734419.

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8

McLaughlan, Claire. "Cultivation of invasive zebra mussels (Dreissena polymorpha) for the improvement of reservoir water quality." Thesis, University of Cambridge, 2015. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.708521.

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9

Zhu, Bin. "Direct and indirect ecological effects of Dreissenid mussels (the zebra mussel Dreissena polymorpha and the quagga mussel D. bugensis) on submerged macrophytes in North American lakes." Related electronic resource: Current Research at SU : database of SU dissertations, recent titles available full text, 2006. http://proquest.umi.com/login?COPT=REJTPTU0NWQmSU5UPTAmVkVSPTI=&clientId=3739.

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10

Tessier, Catherine. "Ecotoxicological impacts of zebra mussels, Dreissena polymorpha, a new food source for lesser scaup, Aythia affinis." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=34468.

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Zebra mussels (Dreissena polymorpha) have invaded a great proportion of the waters of the eastern part of North America. This mollusk may be a useful sentinel species for bioaccumulation of heavy metals and organic contaminants in aquatic ecosystems. The zebra mussel's capacity to bioaccumulate cadmium at environmentally relevant exposure and to sequester metals in metal-binding proteins, metallothioneins, was investigated. Elevated (relative to control) concentrations of Cd$ sp{2+}$ were detected in Dreissena exposed to $ ge$2 $ mu$g Cd/liter suggesting that zebra mussels cannot regulate Cd$ sp{2+}$ of trace exposure concentration. More than 85% of the measured Cd$ sp{2+}$ was bound to metallothioneins.
Lesser scaup (Aythya affinis) was assessed as a model species for potential impacts of zebra mussels on higher trophic levels. The feasibility of incubating and rearing scaup in semi-natural conditions was evaluated. A series of biomarkers was assessed in 3 groups of scaup fed a contaminant-free diet or diets containing zebra mussels from the St-Lawrence River or Lake Erie.
Lesser scaup proved to be a suitable species to raise in captivity providing daily water misting through out incubation and strict hygiene conditions during brooding. A hatching success of 89% was achieved. Appropriate housing, feeding and bathing conditions yielded low (3%) post-hatching mortality.
Phagocytosis and respiratory burst activities of heterophils of scaup were suppressed after 6 weeks of feeding on zebra mussels, compared to the control group. These two heterophilic functions were negatively correlated with the incidence of pododermatitis (bacterial feet infection), suggesting a suppression of the non specific immunity. Increased liver/body mass ratio and decreased hepatic vitamin A (retinol and retinyl palmitate) concentrations were observed in scaups fed zebra mussels. Lipid accumulation and glycogen overload were found in the livers of scaups fed mussels from the St-Lawrence River and the Lake Erie groups, respectively. These immunological, biochemical and histopathological biomarkers show promise for monitoring "early" injury and may help in the understanding of health impairment of different species of waterfowl exposed to xenobiotics via contaminated food sources.

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11

Bowman, Michelle F. "The potential for zebra mussels, Dreissena polymorpha, to alter lower food web dynamics, a mesocosm approach." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq21082.pdf.

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12

Tessier, Catherine. "Ecotoxicological impacts of zebra mussels, Dreissena polymorpha, a new food source for lesser scaup, Aythya affinis." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ30403.pdf.

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13

Brown, Joshua Evan. "Genetic Portraits of Introduced Gobies and Mussels: Population Variation Delineates Invasion Pathways." University of Toledo / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1261147796.

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14

Bodamer, Betsy L. "The effects of wetland streams on the secondary dispersal of zebra mussels (Dreissena polymorpha) in connected lake-stream systems /." Connect to full text in OhioLINK ETD Center, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=toledo1196720548.

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Thesis (M.S.)--University of Toledo, 2007.
Typescript. "Submitted as partial fulfillment of the requirements for The Master of Science Degree in Biology (Ecology-track)." "A thesis entitled"--at head of title. Bibliography: leaves 19-23.

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15

Harper, Kathryn M. "Yellow perch consumption of invasive mussels in the St. Lawrence River." Thesis, McGill University, 2007. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=101134.

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Biological invasions are a global phenomenon that can threaten native species and disrupt ecosystem processes. Exotic species also impact ecosystems in less conspicuous ways by provoking native species to alter their foraging behaviour. Subtle impacts such as diet shifts are frequent, and can have consequences for food web dynamics and the fitness of native predators. Diet shifts involving the consumption of exotic species require native predators to recognize, capture and handle novel prey. In this thesis, I document a diet shift in the St. Lawrence River involving a common native fish and Eurasian mussels that invaded the river in the early 1990s. I conducted diet analysis of yellow perch (Perca flavescens) at multiple sites in the upper St. Lawrence River and discovered that they consumed substantial quantities of zebra and quagga mussels (Dreissena spp.) in the Soulanges Canal, an artificial waterway west of Montreal. This was unexpected because perch lack adaptations for crushing molluscs. This foraging innovation was not observed at the same site in the early 1990s or at other sites at any time. Mussel shells were weaker at this site, probably because of exposure to calcium-poor water. This suggests that water chemistry mediates yellow perch predation on mussels. This study provides an example of diet shifts involving exotic prey and illustrates the influence of abiotic factors on species interactions.

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16

Mellina, Eric. "Patterns in the distribution and abundance of zebra mussels (Dreissena polymorpha) in the St. Lawrence River in relation to substrate and other physico-chemical factors." Thesis, McGill University, 1993. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=69641.

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Using SCUBA and an in situ method of quantifying substrate characteristics, I describe patterns of zebra mussel (Dreissena polymorpha) distribution along the St. Lawrence and Hudson Rivers and in Oneida Lake, New York, and develop empirical models for their abundance. Calcium-poor waters originating from rivers draining the Canadian Shield resulted in a lack of zebra mussel along the north shore of the St. Lawrence River east of Montreal until Portneuf despite an abundance of suitable substrate. Calcium concentrations of 15 mg/L or less were found to limit the distribution of zebra mussel. The entire south shore from Cornwall, Ontario to Ile d'Orleans, Quebec was colonized by zebra mussel wherever suitable substrate was found. In the Hudson River, along the south shore of the St. Lawrence River and in Oneida Lake variability in density was primarily related to substrate type which explained between 38% and 91% of the variance. Other factors such as Secchi depth, calcium concentration of the water, the presence of crayfish, native unionid abundance and the maximum width of the river at the site increased the amount of explained variance across the different systems. The influence of substrate type on zebra mussel density and the predictions of the model were also tested using data from the literature, where substrate type explained 75% of the variability in density. The scatter of the literature data above the predictions of the empirical model suggests that North American zebra mussel populations may continue to grow before reaching equilibrium levels. While water chemistry parameters may be useful predictors of the presence or absence of zebra mussel in a given water body, physical factors play a far greater role in determining local abundance.

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17

Timar, Levente. "Modeling the Anthropogenic Spread of an Aquatic Invasive Species: The Case of Zebra Mussels and Transient Recreational Boating in Wisconsin." NCSU, 2008. http://www.lib.ncsu.edu/theses/available/etd-07112008-122212/.

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Transient recreational boating is the principal overland vector of dispersal for several freshwater invasive species. Traditional models of human-mediated aquatic invasions use aggregate data on boating patterns, and are unable to incorporate changes in boater behavior. This limits their practicality because most control policies, by targeting the human vector, are expected to have behavioral consequences, and a complete policy assessment needs to consider the resultant shift in invasion pressure. In this dissertation, I develop a framework that utilizes site choice probabilities from a travel cost recreation demand model to quantify anthropogenic invasion threat to a water body. This integrated behavioral approach enables the researcher to trace the effects of any perturbation that elicits a behavioral response, and to translate them into changes in site-specific invasion probabilities. I employ spatial and temporal data on the distribution of zebra mussels in Wisconsin, and the results of a large revealed preference boater survey in the state to empirically implement the model. Finally, I demonstrate via counterfactuals that a control policy that reduces the desirability of an infested choice alternative is less effective than a traditional model would imply. In some situations, the policy may be not only expensive in terms of lost consumer surplus, but also counterproductive in terms of increasing (instead of decreasing) the probability of zebra mussel spread to the uninfested water bodies it is designed to protect. Similar unintended consequences would be impossible to identify in a traditional, non-behavioral approach.

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18

Churchill, Christopher J. "Population Dynamics of Zebra Mussels (Dreissena Polymorpha) in a North Texas Reservoir: Implications for Invasions in the Southern United States." Thesis, University of North Texas, 2013. https://digital.library.unt.edu/ark:/67531/metadc407755/.

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This dissertation has two main objectives: first, quantify the effects of environmental conditions on spatio-temporal spawning and larval dynamics of zebra mussels (Dreissena polymorpha [Pallas 1771]) in Lake Texoma, and second, quantify the effects of environmental conditions on survival, growth, and reproduction of young of the year (YOY) juvenile zebra mussels. These biological responses directly influence population establishment success and invasive spread dynamics. Reproductive output of the zebra mussel population in Lake Texoma was significantly related to water temperature and lake elevation. Annual maximum larval (veliger) density decreased significantly indicating a population crash, which was likely caused by thermal stress and variability of lake elevation. In 2011, temperatures peaked at 34.3°C and lake elevation decreased to the lowest level recorded during the previous 18 years, which desiccated a substantial number of settled mussels in littoral zones. Estimated mean date of first spawn in Lake Texoma was observed approximately 1.5 months earlier than in Lake Erie, and peak veliger densities were observed two months earlier. Veligers were observed in the deepest oxygenated water after lake stratification. During a 69-day in situ experiment during summer in Lake Texoma, age-specific mortality of zebra mussels was generally high until temperatures decreased to approximately 28°C, which was observed after lake turnover in late summer. No study organism died after temperatures decreased to less than 26°C, which indicates individuals that survive high summer temperatures are likely to persist into autumn/winter. Shell length growth and soft tissue growth rates were related to temperature and chlorophyll-a concentration, respectively. Growth rates of study organisms were among the highest ever reported for D. polymorpha. Water temperature and body size influenced reproduction of YOY zebra mussels in Lake Texoma. Fecundity of females were positively related to temperature; however, sperm production was negatively related to temperature, which indicates males could be more sensitive to physiologically-stressful conditions than females and could perform better in cooler waters. YOY mussels spawned up to approximately 40,000 eggs and 3.47E+08 sperm after a single-summer growing season. Reproductive effort and reproductive mass were independent of sex. YOY individuals from each study site (n = 5) were able to spawn viable gametes capable of sperm binding and egg cleavage, which provides the first evidence that YOY zebra mussels can successfully reproduce. Individual mortality of zebra mussels will likely be high in warm waters and intermittent, extreme droughts, which are observed more frequently at lower latitudes, can significantly reduce population sizes. However, rapid growth and single-season maturation can decrease generation times and could facilitate establishment and spread of zebra mussels in warm-water environments in the southern United States.

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19

Mooney, Karen Marie. "The occurrence of cyanobacteria and cyanotoxins in Irish lakes and their relationship with environmental influences and Zebra Mussels Dreissena polymorpha." Thesis, Queen's University Belfast, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.546337.

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20

DeVanna, Kristen M. "Role of Dreissena as ecosystem engineers : effects to native bioturbators and benthic community structure and function /." Connect to Online Resource-OhioLINK, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1165420236.

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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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21

High, Kim. "Metal-specific high-performance liquid chromatography detection approaches for the characterization of metallothionein-like proteins from freshwater mussels." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape16/PQDD_0012/NQ29958.pdf.

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22

Jones, Lisa A. 1976. "Influence of physico-chemical factors on the distribution and biomass of invasive mussels in the St. Lawrence River." Thesis, McGill University, 2005. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=82257.

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Biological invasions threaten the stability and biodiversity of freshwater ecosystems worldwide. The impacts of an invading species often vary across systems, making their prediction difficult. When data from multiple invaded sites are available, statistical models can be developed to correlate an invader's distribution and abundance with local environmental variables; such models could then provide managers with useful tools to help prioritize efforts to control the invader. The introduction of the zebra mussel (Dreissena polymorpha) and quagga mussel (D. bugensis) to North America ranks among the most ecologically and economically disruptive aquatic invasions ever documented. While some attempts have been made to predict zebra mussel occurrence and abundance, none have been made for quagga mussels. Furthermore, few studies have been based on river systems, which possess the bulk of North American freshwater biodiversity. I related zebra and quagga mussel occurrence and biomass to physical habitat variables (calcium concentration, substrate size and depth) in the St. Lawrence River. I then developed predictive models of abundance for each species from combinations of these variables. Each variable explained a significant amount of variation in mussel biomass, but different combinations of variables were obtained for each species. Although these models do not account for all of the variation in abundance, they do provide a useful basis for predicting dreissenid distribution and abundance in other invaded river systems.

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23

DeVanna, Kristen M. "Spatial Correlation and Facilitation Between Dreissena and Hexagenia: Possible Food-Web Disruption?" University of Toledo / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1320935549.

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24

Zhang, Hongyan. "Ecological modeling of the lower trophic levels of Lake Erie." Columbus, Ohio : Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1163785412.

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Costa, R. J. "Improved solutions for zebra mussel control." Thesis, University of Cambridge, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.598014.

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The aim of the project presented in this dissertation was to develop improved chemical solutions for zebra mussel control. Three solution concepts were explored: (i) the combination of toxins; (ii) the encapsulation of toxins; and (iii) the exploitation of the seasonality of the species’ tolerance to toxins. The potential of binary mixtures of potassium chloride and poly(diallyldimethyl ammonium chloride) (polyDADMAC) as well as quaternary mixtures containing these chemicals and niclosamide ethanolamine salt and 2-(thiocyanomethylthio)benzothiazole (TCMTB) as assessed. Potassium chloride and polyDADMAC were observed to act more than additively on adult zebra mussels. The examination of the joint effects of these two toxins also suggested that potassium chloride dosages as low as 10mg/l impair the ability of the zebra mussels to perceive the presence of other biocides in the water column, and as a result inhibit protective valve closure responses. This study indicated that the combined application of potassium chloride and polyDADMAC (and possible other pairs of toxins) is likely to be of great practical value. The study of the performance of the quaternary antagonised in the presence of the others. Furthermore, the joint action of the four toxins was observed to be less than additive, and the sensitivity of the animals to potassium chloride and polyDADMAC decreased in the presence of niclosamide ethanolamine salt and TCMTB. These results seriously compromise the potential of the quaternary mixture for zebra mussel control. A promising polyDADMAC-loaded formulation was developed. The encapsulated biocide was shown to double the polymer toxic effects (even under rather unfavourable laboratory testing conditions).

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Reyes, Pascual Marta. "How is the zebra mussel influecing roach populations?" Thesis, Uppsala universitet, Limnologi, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-134428.

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Stoeckmann, Ann Marie. "Energy allocation strategies of the Zebra mussell, Dreissena Polymorpha /." The Ohio State University, 1997. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487947501135737.

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Cottrell, Catherine. "Zebra mussel adhesion and aspects of its prevention using copper." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0022/NQ49828.pdf.

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Kallmeyer, Diane E. "Density dynamics of zebra mussel (Dreissena polymorpha) larvae in a study zone of the Indiana waters of Lake Mighigan from May through August of 1990-1997." Virtual Press, 1999. http://liblink.bsu.edu/uhtbin/catkey/1137832.

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Alix, Muriel. "Zebra mussel (Dreissena polymorpha) population in the newly formed Cardiff Bay." Thesis, Cardiff University, 2010. http://orca.cf.ac.uk/54122/.

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Zebra mussels are among the worlds most prolific invasive species, but few case studies assess occurrence and effects in artificial water bodies. Cardiff Bay was invaded soon after formation in 2001. Over four years, planktonic veliger surveys, Side Scan Sonar, under-water video, colonisation samplers and mesocosm experiments were used to investigate all life stages. Veligers were produced in 1-3 spawning events from May to September, with frequency and timing apparently varying facultatively under contrasting conditions between years. Peak densities reached 8-14 ind., with local variations reflecting flow, and numbers declined during high discharge. Veliger settlement as juveniles also declined at sits or times with the greatest flow, and settled densities in a dry year (2007) were 120 times greater than in a wet year (2008). Local substrate availability also affected settlement pattern. While no aggregation of zebra mussels occurred in the Bay's soft sediments, hard substrates and vertical surfaces at 0.5-7 m depth have been colonised extensively at densities of 250-6 600 . Local density estimates alongside crude assessments of habitat available suggest that Cardiff Bay could be occupied by a population of in excess of 10-31 million adults (excluding the Bay's aeration system), consistent with the large veliger density recorded in the water column. Most mussels are 1 year old, but year-class structure (4 cohorts) show that the Bay must have been occupied at least as early as 2003. These data are consistent with a rapidly established, large and extensive population of zebra mussels in Cardiff Bay now maintained by prolific larval production and settlement. In addition to the large risks of contamination of boats and onward dispersal, zebra mussels could have large ecological and environmental effects on Cardiff Bay.

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Bartrand, Timothy A. "Experimental investigation of a vacuum apparatus for zebra mussel control in closed conduits." Ohio : Ohio University, 1997. http://www.ohiolink.edu/etd/view.cgi?ohiou1177611369.

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Elliott, Paul. "The zebra mussel in England : biology, impacts, and control using micro-encapsulated toxins." Thesis, University of Cambridge, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.442562.

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33

Naddafi, Rahmat. "The Invasion of the Zebra Mussel - Effects on Phytoplankton Community Structure and Ecosystem Function." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis Acta Universitatis Upsaliensis, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-8301.

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34

Boles, Larry C. "Potential for Population Regulation of the Zebra Mussel, Dreissena polymorpha, in the Hudson River." W&M ScholarWorks, 1996. https://scholarworks.wm.edu/etd/1539617718.

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35

Yu, Neng. "Zebra mussel (Dreissena polymorpha) colonization in a thermally stratified reservoir and its ecological impacts /." The Ohio State University, 1998. http://rave.ohiolink.edu/etdc/view?acc_num=osu1488186329501931.

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36

Coffman, Curtis D. "Characteristics of the 1990-1994 zooplankton community at a sample location in Lake Michigan near Michigan City, Indiana, with emphasis on zebra mussel (dreissena polymorpha) dynamics." Virtual Press, 1995. http://liblink.bsu.edu/uhtbin/catkey/941348.

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The Summer (May through August) community of crustacean zooplankton and zebra mussel (Dreissena polvmorpha) larvae at a 15 m sample site in Lake Michigan near Michigan City was evaluated for the years 1990 through 1994. Yearly mean densities were compared with investigations done at the same sample location by Johnson (1972) and Ball State University (unpublished data) during 1970 and 1971, respectively to investigate possible changes in community composition during the past 25 years. Potential declines in crustacean zooplankton relating to the 1991 introduction of the filter-feeding zebra mussel were also evaluated.Overall declines in major species since 1970-71 included Bosmina longirostris, Daphnia retrocurva, and Diacyclops thomasi. Recent increases in the nearshore fish population of alewife (Alosa pseudoharengus) and spottail shiner (Notropis hudsonius) may have influenced the densities of these species in recent years. Copepod nauplii were the only crustaceans to increase in overall abundance since the period of 1970-71, as the number of invertebrate predators appeared to decrease. Other species did not show any noticeable change in long-term abundance or during the 1990-94 period.Zebra mussel larvae were first observed in the zooplankton complex studied on June 17, 1991. -Densities of larvae reached maximal levels for the period of study in 1994 with two large reproductive pulses of 195,000 and 210,000/m3 in June and August, respectively. The mean abundance during 1994 made up 65% of the total crustacean zooplankton/zebra mussel community complex. Evaluation of the vertical stratification of zebra mussel larvae in 1994 revealed a strong (r2=0.75, p<0.0005) tendency for veligers to remain in the upper 10 m of the water column due to thermal stratification.
Department of Biology

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37

Cayón, David. "Different anti-predator defenses induced by roach and signal crayfish in the invader zebra mussel." Thesis, Uppsala universitet, Limnologi, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-132605.

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Peñarrubia, Lozano Luis. "Genetic characterization of the Iberian populations of two invasive mollusks: zebra mussel and asiatic clam." Doctoral thesis, Universitat de Girona, 2016. http://hdl.handle.net/10803/399584.

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The zebra mussel and the Asian clam are two invasive aquatic species worldwide. Both species are present in the Iberian Peninsula for several years. However, introduction history and colonization routes of these two invasive species in the Iberian Peninsula remain mainly unknown. We have developed new molecular markers for each species to be used in population genetics studies. Then, we characterized the genetic structure of the Iberian populations in order to infer their possible colonization routes. Our results show how the zebra mussel invasion into the Iberian Peninsula involves a single invasion episode with a separate colonization history than the rest of Europe. In Asian clam, our results revealed that at least two colonization episodes have occurred in the Iberian Peninsula. Finally, we have developed a genetic method based on environmental DNA for dreissenid larvae detection in waterbody samples, increasing the sensibility of the routinely zebra mussel larvae detection methods
El mejillón cebra y la almeja asiática son dos especies acuáticas invasoras, presentes en la Península Ibérica desde hace muchos años. Sin embargo, no se conocen de manera cierta ni la historia de su invasión ni sus rutas de colonización. Desarrollamos nuevos marcadores moleculares para usarlos en estudios de genética de poblaciones. Seguidamente, caracterizamos la estructura genética de las poblaciones ibéricas para inferir posibles rutas de invasión. Nuestros resultados muestran que la invasión del mejillón cebra en la Península Ibérica se basa en un único y reciente episodio de invasión, diferente al resto de Europa. Respecto a la almeja asiática, nuestros resultados mostraron que ha habido al menos dos episodios de colonización en la Península Ibérica. Finalmente, desarrollamos un método genético basado en DNA ambiental para detectar larvas de especies de dreissenidos en masas de agua, incrementando la sensibilidad de los métodos rudimentarios de detección de larvas de mejillón cebra

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39

Maguire, C. M. "The zebra mussel (Dreissena polymorpha) in Lough Erne : invasion, population dynamics and early ecological impacts." Thesis, Queen's University Belfast, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.268332.

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Edwards, William J. "Impacts of the Zebra Mussel (Dreissena Polymorpha) on Large Lakes: Influence of Vertical Turbulent Mixing." The Ohio State University, 2002. http://rave.ohiolink.edu/etdc/view?acc_num=osu1392139735.

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41

Severson, Andrea Marie. "Effects of zebra mussel (Dreissena polymorpha) invasion on the aquatic community of a great plains reservoir." Thesis, Manhattan, Kan. : Kansas State University, 2010. http://hdl.handle.net/2097/4139.

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42

Brooks, Andrew Allen. "Relationships between toxic metal concentrations from zebra mussel wastes and proximity to selected Lake Erie shipwrecks." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/mq30934.pdf.

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43

Sarkis, Samia Christiane. "The turkey-wing mussel, Arca zebra : aspects of its ecology, reproduction and physiology in Bermudan waters." Thesis, University of Plymouth, 1992. http://hdl.handle.net/10026.1/2701.

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Growth and reproductive potential of the turkey-wing mussel in Bermuda was assessed following field studies, the determination of nutrient storage sites and nutrient use during periods of reproduction, and seasonal fluctuations in the scope for growth index. Larval and post-larval development were also described and were typical of the family Arcidae. Furthermore, post-larval production, by controlled laboratory rearing, was suggested as a useful tool for enhancement of stocks for this species. Both preliminary field and laboratory studies indicated slow shell growth of the species throughout its life cycle. Temperature minima recorded during the winter months were suggested to have a negative effect on growth of Area zebra in the field. Gonadal development, expressed as gonadic index (dry gonad weight/empty shell weight x100) and confirmed by histological analyses, indicated a "rest" period during the winter months. The reproductive cycle was assessed and two well-defined spawning seasons, early summer (June) and autumn (September), were determined. The metabolic processes occurring prior to the summer spawning period were regulated by a glycogen-based metabolism with the pedal muscle as main storage organ. Processes regulating the second reproductive activity are characterized by a direct reliance on ingested food, favoured by high environmental temperature and food supply. Calorific values pointed to a low storage of nutrient. The adaptability of the turkey-wing mussel to low food supply was demonstrated by its response to laboratory-induced starvation, expressed as the molar ratio of oxygen consumed to ammonia excretion (O/N). Temperature played a significant role in the responses of the physiological variables in scope for growth (SFG) affecting most crucially clearance rate, hence energy inake. The inherently high growth efficiency (K2) determined for A. zebra in Bermuda, and determination of temperature as the key causal agent of its scope for growth, suggests the limitation of the Bermuda environment to the growth and reproduction of the species.

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Zu, Ermgassen Philine Susanne Ermgard. "Freshwater non-indigenous species in Great Britain and their interactions with the zebra mussel, Dreissena polymorpha." Thesis, University of Cambridge, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.608651.

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Deng, Yuming. "Present and expected economic costs of zebra mussel damages to water users with great lakes water intakes /." Connect to resource, 1996. http://rave.ohiolink.edu/etdc/view.cgi?acc%5Fnum=osu1249669221.

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Deng, Yuming. "Present and expected economic costs of zebra mussel damages to water used with Great Lake water intakes." The Ohio State University, 1996. http://rave.ohiolink.edu/etdc/view?acc_num=osu1249669221.

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47

Woller-Skar, M. Megan. "Zebra Mussel (Dreissena Polymorpha) Promotion of Cyanobacteria in Low-Nutrient Lakes and the Subsequent Production and Fate of Microcystin." Bowling Green State University / OhioLINK, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1256928121.

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48

Bidwell, Joseph R. "Control strategies for the zebra mussel, Dreissena polymorpha, and the Asian clam, Corbicula fluminea comparative stress responses and nontarget impact /." Diss., Connect to this title online, 1993. http://scholar.lib.vt.edu/theses/available/etd-10212005-122959/.

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Ricciardi, Anthony. "The role of the zebra mussel (Dreissena polymorpha) in structuring benthic macroinvertebrate communities in the St. Lawrence River /." Thesis, McGill University, 1996. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=34438.

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This research examined how an invasive macrofouling organism, the Eurasian zebra mussel (Dreissena polymorpha), alters benthic communities in a riverine ecosystem. Controlled field experiments using artificial substrates showed that macroinvertebrate abundance is significantly enhanced within Dreissena beds, and that the physical habitat provided by mussel shells has a greater impact on macroinvertebrate abundance than biological factors (e.g., food provided by mussel biodeposits). Data collected at field sites before and after the establishment of dense Dreissena colonies suggested that these colonies alter macroinvertebrate communities on hard substrates primarily by enhancing populations of deposit-feeding organisms (e.g., amphipod crustaceans) and predators (e.g., flatworms), and by displacing fauna that are poorly adapted to interstitial substrate (e.g., large gastropods, net-spinning caddisfly larvae). Freshwater sponges were the only organisms found to compete successfully with Dreissena for hard substrate; sponge overgrowth caused significant local mortality of zebra mussels at all sites where sponges were abundant.
The capacity for Dreissena to displace native freshwater mussels (Family Unionidae) in the St. Lawrence River was examined over a four year period by quadrat sampling at selected sites. Dreissena preferentially colonized unionid mussels in the river. Mean infestation loads (number of zebra mussels per unionid mussel) in the St. Lawrence were 10-100 times lower than in the Great Lakes,.but resulted in similar high mortality. Severe declines in unionid species richness and abundance occurred in areas of the river that supported dense Dreissena populations ($>$4,000 mussels/m$ sp2).$ Analysis of data from the Great Lakes-St. Lawrence River system suggests that mass mortality and extirpation of unionid populations typically occurs within 4-5 years following initial colonization of unionids by Dreissena, and that Dreissena infestation will increase the future tate of extinction of North American unionids by nearly 10-fold.

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Ricciardi, Anthony. "The role of the zebra mussel, Dreissena polymorpha, in structuring benthic macroinvertebrate communities in the St. Lawrence River." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape16/PQDD_0003/NQ30370.pdf.

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Dissertations / Theses on the topic 'Zebra mussels'

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