2023 Early Hearing Detection & Intervention Conference
March 5-7, 2023 • Cincinnati, OH
6/06/2017 | 3:00 PM - 3:15 PM | SUBSIDIES OF ESSENTIAL NUTRIENTS FROM AQUATIC TO TERRESTRIAL ENVIRONMENTS VIA AMPHIBIAN EMERGENCE | 301B
SUBSIDIES OF ESSENTIAL NUTRIENTS FROM AQUATIC TO TERRESTRIAL ENVIRONMENTS VIA AMPHIBIAN EMERGENCE
Impacts of resource subsidies are not only a function of raw export, but also the relative scarcity in recipient habitats. Certain n-3 long-chain polyunsaturated fatty acids (LC-PUFAs) such as eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) are essential in biochemical reactions, and active in critical aspects of physiology. Animals obtain LC-PUFAs from food or through de novo synthesis. Many cannot synthesize LC-PUFAs sufficient to meet physiological demands and thus benefit from consuming preformed EPA and DHA. LC-PUFAs are synthesized in great quantities by some algae and thus occur in higher amounts in aquatic habitats. LC-PUFAs can be transported across aquatic-terrestrial boundaries via emergences of animals with complex life cycles such as amphibians. We quantified n-3 LC-PUFAs transport from temporary wetlands via post-metamorphic amphibian emergence. Anurans exported a mean of 3862.3 mg of EPA, and 4925.4 mg of DHA from ponds, while salamanders exported a mean of 225.9 mg of EPA, and 99.0 mg DHA. Aquatic-origin nutrients such as LC-PUFAs may directly benefit animals foraging in and around wetland habitats, and such aquatic-terrestrial subsidies may have far-reaching effects on surrounding communities.
- C02 Fish and Other Aquatic Vertebrates
- C25 Food Webs
- C09 Wetland Ecology
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Presenters/Authors
Kelley Fritz
(), Southeastern Missouri State University, k.a.fritz24@gmail.com;
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Jesse Trushenski
(), Department of Fish and Game, Eagle Fish Health LaboratoryEagle, Idaho, USA, saluski@siu.edu;
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Matt Whiles
(), University of Florida, mwhiles@ufl.edu;
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