The Stoichiometry of Larval Anuran Development in Natural Wetlands

Show simple item record McLeay, Scott M. Smith, Lora L. Atkinson, Carla L. 2021-07-28T15:50:14Z 2021-07-28T15:50:14Z 2019
dc.identifier.citation McLeay, S., Smith, L., Atkinson, C. (2019): The Stoichiometry of Larval Anuran Development in Natural Wetlands. Journal of Freshwater Ecology. 34(1). en_US
dc.description.abstract Understanding the influence of growth and development on the stoichiometry of organisms with complex lifecycles is necessary to understand the spatial and temporal extent of consumer-driven nutrient dynamics. This can be particularly challenging in temporally variable habitats, such as geographically isolated wetlands (GIW), which dry down seasonally. Larval anurans (tadpoles) are excellent model organisms for studies within the framework of ecological stoichiometry because they undergo major anatomical changes during metamorphosis that likely require a shift in body stoichiometric demands. To examine stoichiometry of larval anurans in GIWs, we measured larval Lithobates sphenocephalus tissue carbon (C), nitrogen (N), phosphorus (P) and calcium (Ca) content, excretion NH4-N, TDN and TDP, and egestion C, N and P across three developmental stage categories (no limbs, hind limbs only, and four limbs). We found that tissue P content increased significantly during later stages when bone development was occurring, which significantly reduced tissue C:P and N:P. Tissue C also increased across stages. Mass-specific excretion of TDN and N:P decreased across stages. Per capita NH4-N excretion rate had a positive relationship with body size, and per capita excretion N:P had a negative relationship with body size. Mass specific bulk egestion and C egestion varied across stages, as well as C:N and C:P, but we could not distinguish which stages were different from one another. Per capita egestion rates of N and P were positively correlated with body size, and both C:N and C:P were negatively related to body size. We found that development stage of larval anurans was an important indicator of tissue, excretion, and egestion stoichiometry and these differences may influence their functional role in aquatic ecosystems throughout their development. en_US
dc.format.mimetype application/pdf
dc.language English en_US
dc.subject Stoichiometry en_US
dc.subject anuran en_US
dc.subject ontogeny en_US
dc.subject excretion en_US
dc.subject egestion en_US
dc.subject consumer en_US
dc.subject nutrient cycling en_US
dc.title The Stoichiometry of Larval Anuran Development in Natural Wetlands en_US
dc.type text

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