EARLY HEARING DETECTION AND INTERVENTION VIRTUAL CONFERENCE
MARCH 2-5, 2021
(Virtually the same conference, without elevators, airplane tickets, or hotel room keys)
5/21/2019 | 3:00 PM - 3:15 PM | LARVAL DEVELOPMENT IN WASTEWATER CONFERS AN ADVANTAGE IN THE TERRESTRIAL ENVIRONMENT | 251 AB
LARVAL DEVELOPMENT IN WASTEWATER CONFERS AN ADVANTAGE IN THE TERRESTRIAL ENVIRONMENT
Environmental technology like constructed wetlands can serve multiple purposes including tertiary wastewater treatment while supporting plant and wildlife communities, but compounds removed in tertiary treatment wetlands (TTWs) may also cause developmental abnormalities in wildlife. In a controlled experiment, we evaluated larval anuran development in water from secondary and tertiary treated wastewater versus rain-filled pond water. Tadpoles took 21% longer to metamorphose in pond water and grew to only 70% the size of tadpoles from secondary and tertiary treated wastewater. Survival was 2.2 times higher in wastewater relative to pond water. Leg length was larger in tadpoles from wastewater but head size was smaller than individuals from pond water. No malformations were noted in individuals from pond water but 5.5% of individuals from wastewater exhibited minor malformations. Larval anurans developed faster to larger sizes in wastewater relative to pond water with tadpoles from TTWs more closely resembling those from secondarily treated wastewater. Increased growth in wastewater confer a higher long-term survival despite low rates of malformations suggesting that TTWs may serve as high quality habitat for anurans.
- Amphibian
- Eutrophication
- Wetland
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Presenters/Authors
Kristen Cecala
(), University of the South, kkcecala@sewanee.edu;
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Emma Zeitler
(), University of the South, zeitlefo@sewanee.edu;
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Deborah McGrath
(), University of the South, mcgrathda@sewanee.edu;
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