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Ecotoxicol Environ Saf. 2013 Jun;92:150-4. doi: 10.1016/j.ecoenv.2013.03.016. Epub 2013 Apr 11.

Short-term toxicity of ammonia, sodium hydroxide and a commercial biocide to golden mussel Limnoperna fortunei (Dunker, 1857).

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  • 1Laboratório de Malacologia, Instituto Oswaldo Cruz, FIOCRUZ, Av. Brasil 4365, Rio de Janeiro, RJ, Brasil, CEP 21.040-900.

Abstract

Macrofouling bivalves are considered an ecological and technological problem worldwide. Control measures have been researched with Limnoperna fortunei, but without success. The aim of the manuscript is to test some alternatives to regulate this harmful invasive mollusk. Mortality and behavioral response (shell gaping) of Limnoperna fortunei exposed to three chemical compounds were evaluated. Values for LC50 96h were: 0.25 (0.24-0.27)mg/L NH3-N, 11.10 (7.45-16.55) mg/L MXD-100 and 88.51 (74.61-105.01)mg/L NaOH. Reduced gaping was observed beginning at concentrations of 0.31mg/L (NH3-N), 100mg/L (MXD-100) and 160mg/L (NaOH) and increased above these values. The percentage of individuals gaping after two hours at LC50 96h differed significantly (χ(2)=79.9; DF=3; p<0.001) in MXD-100 (50%), NaOH (0%), NH3-N (96.7%) and the controls (93.3%). This study contributes to the understanding of the relationship between toxicity and behavioral effects of some toxicants in L. fortunei.

PMID:
23582994
DOI:
10.1016/j.ecoenv.2013.03.016
[PubMed - indexed for MEDLINE]
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