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Full-Text Articles in Life Sciences
Animals And Their Epibiota As Net Autotrophs: Size Scaling Of Epibiotic Metabolism On Snail Shells, Nicole Lukens, Benjamin Kraemer, Vanessa Constant, Ellen J. Hamann, Ellinor Michel, Anne M. Socci, Yvonne Vadeboncoeur, Peter B. Mcintyre
Animals And Their Epibiota As Net Autotrophs: Size Scaling Of Epibiotic Metabolism On Snail Shells, Nicole Lukens, Benjamin Kraemer, Vanessa Constant, Ellen J. Hamann, Ellinor Michel, Anne M. Socci, Yvonne Vadeboncoeur, Peter B. Mcintyre
Biological Sciences Faculty Publications
Animals are heterotrophic by definition, but species from many taxonomic groups are hosts to epibiota that may alter their net metabolism. We tested the degree to which snail-shell epibiota can generate net ecosystem productivity for snails and their epibiota (snail–epibiota ecosystems; SEEs) after accounting for snail respiration. We focused on 3 species from the Lavigeria snail assemblage in Africa’s Lake Tanganyika and quantified the scaling of SEE metabolism with shell size under light and dark conditions. The metabolism of snails and their epibiota shifted significantly across the size gradient. SEEs of large snails (>20 mm) were consistently autotrophic during …
Habitat Variation Among Aquatic Gastropod Assemblages Of Indiana, U.S.A., Mark Pyron, Jayson Beugly, Matthew Spielman, Jennifer Pritchett, Stephen J. Jacquemin
Habitat Variation Among Aquatic Gastropod Assemblages Of Indiana, U.S.A., Mark Pyron, Jayson Beugly, Matthew Spielman, Jennifer Pritchett, Stephen J. Jacquemin
Biological Sciences Faculty Publications
We collected aquatic gastropods at 137 sites in lakes and streams of Indiana and tested for patterns of assemblages with environmental variables. The survey resulted in 32 species with a mean of 2.8 species at each site, and a mean abundance at each site of 144 individuals. Nonmetric multidimensional scaling (NMS) multivariate analyses resulted in watershed drainage area, water conductivity, substrate category frequency, and dissolved oxygen as significant correlates of gastropod assemblage structure. Gastropod assemblages of lakes were not significantly different than assemblages of streams in the ordination. Prosobranch taxa occurred in higher abundances than pulmonate taxa at sites with …