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Spatial and temporal distributions of Dreissena spp. veligers in Lake Huron: does calcium limit settling success?
Kirkendall, Darren S; Bunnell, David B; Armenio, Patricia M; Eaton, Lauren A; Trebitz, Anett S; Watson, Nicole M.
Afiliação
  • Kirkendall DS; U.S. Geological Survey, Great Lakes Science Center, 1451 Green Road, Ann Arbor, Michigan 48105, USA.
  • Bunnell DB; U.S. Geological Survey, Great Lakes Science Center, 1451 Green Road, Ann Arbor, Michigan 48105, USA.
  • Armenio PM; U.S. Geological Survey, Great Lakes Science Center, 1451 Green Road, Ann Arbor, Michigan 48105, USA.
  • Eaton LA; Department of Environmental Science, University of Toledo, 2801 West Bancroft Street, Toledo, Ohio 43606, USA.
  • Trebitz AS; U.S. Environmental Protection Agency, Office of Research and Development, Great Lakes Toxicology and Ecology Division, Duluth, Minnesota, USA.
  • Watson NM; Department of Fisheries and Wildlife, Michigan State University, 480 Wilson Road, East Lansing, MI 48824.
J Great Lakes Res ; 47(4): 1040-1049, 2021 Aug.
Article em En | MEDLINE | ID: mdl-35464820
The larval stage of invasive Dreissena spp. mussels (i.e., veligers) are understudied despite their seasonal numerical dominance among plankton. We report the spring and summer veliger densities and size structure across the main basin, North Channel, and Georgian Bay of Lake Huron, and seek to explain spatiotemporal variation. Monthly sampling was conducted at 9 transects and up to 3 sites per transect from spring through summer 2017. Veliger densities peaked in June and July, and we found comparable densities and biomasses of veligers between basins, despite differences in density of juvenile and adult mussels across these regions. Using a generalized additive model to explain variations in veliger density, we found that temperature, chlorophyll a, and nitrates/nitrites were most important. We generated an index of veliger attrition based on size distributions that revealed a higher rate of attrition in the North Channel than the rest of the lake. A logistic model indicated a threshold calcium concentration of around 22 mg/L was necessary for veligers to survive to larger sizes and recruit to their juvenile and benthic adult life stages. Improved understanding of factors that regulate the production and survival of Dreissena veligers will improve the ability of managers to assess future invasion threats as well as explore potential control options.
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Texto completo: 1 Base de dados: MEDLINE Tipo de estudo: Prognostic_studies Idioma: En Ano de publicação: 2021 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Tipo de estudo: Prognostic_studies Idioma: En Ano de publicação: 2021 Tipo de documento: Article