EARLY HEARING DETECTION AND INTERVENTION VIRTUAL CONFERENCE
MARCH 2-5, 2021
(Virtually the same conference, without elevators, airplane tickets, or hotel room keys)
6/05/2017 | 2:15 PM - 2:30 PM | IDENTIFICATION OF RESEARCH PRIORITIES FOR NORTH AMERICAN FRESHWATER GASTROPODS | 305A
IDENTIFICATION OF RESEARCH PRIORITIES FOR NORTH AMERICAN FRESHWATER GASTROPODS
Recent conservation assessments have estimated freshwater gastropods to be among the most imperiled major faunal group in North America. More than half of 716 recognized species are either extinct (70) or imperiled (386). Nearly one third of North American species have been described since 1987, most with highly localized distributions, making them vulnerable to extinction. Historically incomplete species descriptions, poorly defined distributions, and significant biological differences across 16 different families, have made research progress slow. Three major research needs predominate: modern systematic and status reviews, diet and life history requirements, and water quality limitations, including toxicological data. Taxonomy of most groups is still based on unreliable shell characters, and modern revisions would facilitate more accurate conservation status reviews. Data concerning population demographics, reproductive cues and uptake requirements are limited for many families. Freshwater gastropod toxicology remains poorly studied, with most research completed on common, less sensitive species. Freshwater gastropods are highly sensitive to pollutants, and recent EPA Ammonia Water Quality Criteria were lowered partly due to riverine gastropod sensitivity. These research tasks are critical to the conservation of this globally significant fauna.
- C18 Biodiversity
- C03 Invertebrates
- S06 Advances in research to conserve and restore native freshwater mollusks
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Presenters/Authors
Paul Johnson
(), Alabama Department of Conservation and Natural Resources, paul.johnson@dcnr.alabama.gov;
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Nathan Whelan
(), US Fish and Wildlife Service, nathan_whelan@fws.gov;
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Jennifer Archambault
(), North Carolina State University, jmarcham@ncsu.edu;
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