Sub-lethal responses of the aquatic snail Potomapyrgus antipodarum (Hydrobiidae, Mollusca) to unionizae ammonia: a tolerant invading species
Date
2004-10-01Funders
Universidad de Alcalá
Ministerio de Ciencia y Tecnología
Junta de Comunidades de Castilla-La Mancha
Bibliographic citation
Fresenius Environmental Bulletin, 2004, v. 13, n. 7, p. 607-615
Keywords
Activity
Behaviour
Invasive species
Potamopyrgus antipodarum
Recovery
Unionized ammonia
Description / Notes
10 p.
Project
info:eu-repo/grantAgreement/UAH//REN2001-1008/ES//
Document type
info:eu-repo/semantics/article
Version
info:eu-repo/semantics/acceptedVersion
Rights
Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
Access rights
info:eu-repo/semantics/openAccess
Abstract
The behavioural endpoint of activity, as mean time to start the normal movements, was used to assess the toxic effect of unionized ammonia (NH3-N) on the aquatic invasive snail, Potamopyrgus antipodarum. Three bioassays were performed: 1) assessment of organism?s tolerance to different toxic concentrations of NH3-N, 2) determination of the time of recovery after toxic exposure to NH3-N, and 3) evaluation of the snail size on the tolerance to NH3-N. In the first bioassay, four concentrations and a control were used (0.02, 0.05, 0.10, 0.18 mg/L NH3-N) in triplicate, recording the activity for 10 days. In the second, snails were exposed for 24 hours to 0.47, 0.82, and 1.15 mg/L NH3-N in triplicate, and their activity was recorded during 4 days of post-exposure to NH3-N. In the third, snails of two shell sizes (3-4 mm and 1.5-2.7 mm) were exposed to 0.28 mg/L NH3-N and a control, in quadruplicate, the activity was recorded daily for 4 days of exposure and for 3 days of post-exposure. Results showed that NH3-N affected both the activity and recovery of this snail, although the recovery used to be relatively quick, and the shell size did not affect the tolerance to NH3-N. It is concluded that P. antipodarum is an invasive species with a high tolerance and recovery ability to the toxic effects of NH3-N, which could partly explain its ecological success to dwell in aquatic ecosystems polluted with organic matter.
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sublethal_alonso_FEB_2004.pdf | 532.2Kb |
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