期刊
MARINE POLLUTION BULLETIN
卷 62, 期 12, 页码 2633-2641出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2011.09.034
关键词
Mytilus galloprovincialis; Venerupis pullastra; Fucus vesiculosus; Codium tomentosum; Monitoring; Branchial exfoliation
资金
- Spanish Government's National Plan for Marine Culture
- University of Cadiz (Spain)
Histopathological alterations can indicate time-integrated impacts on organisms stemming from alterations at lower biological organisation levels. Long-term (native mussels) and short-term (transplanted clams) changes in the tissues of molluscs exposed to the effluents from two land-based marine fish farms (LBMFFs) were determined. Histological alterations were related to the delta N-15 isotopic signal measured in mussels and macroalgae. Effluents from LBMFFs were found to cause severe and moderate gill filament exfoliation in clams and mussels, respectively. Some transplanted clams showed severe degrees of hemocytic phagocytosis in gonads and connective tissue. In an attempt to semi-quantitatively summarize the observed histopathological alterations, a weighted index of damage (WID) was calculated for each type of alteration, species and sampling site. The WID was clearly related to the delta N-15 descriptor of exposure. Further studies aimed at standardizing this relationship may establish critical thresholds of the descriptor for its implementation within environmental monitoring plans for LBMFFs. (C )2011 Elsevier Ltd. All rights reserved.
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