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Relationship of Parasites and Pathologies to Contaminant Body Burden in Sentinel Bivalves: NOAA Status and Trends ‘Mussel Watch' Program
- Source :
- Marine Environmental Research, Marine Environmental Research, Elsevier science, 2008, 65 (2), pp.101. ⟨10.1016/j.marenvres.2007.09.003⟩
- Publication Year :
- 2008
- Publisher :
- HAL CCSD, 2008.
-
Abstract
- The 1995-1998 database from NOAA's National Status and Trends 'Mussel Watch' Program was used to compare the distributional patterns of parasites and pathologies with contaminant body burdens. Principal components analysis (PCA) resolved five groups of contaminants in both mussels and oysters: one dominated by polycyclic aromatic hydrocarbons (PAHs), one dominated by pesticides, and three dominated by metals. Metals produced a much more complex picture of spatial trends in body burden than did either the pesticides or PAHs. Contrasted to the relative simplicity of the contaminant groupings, PCA exposed a suite of parasite/pathology groups with few similarities between the sentinel bivalve taxa. Thus, the relationship between parasites/pathologies and contaminants differs significantly between taxa despite the similarity in contaminant pattern. Moreover, the combined effects of many contaminants and parasites may be important, leading to complex biological-contaminant interactions with synergies both of biological and chemical origin. Overall, correlations between parasites/pathologies and contaminants were more frequent with metals, frequent with pesticides, and less frequent with PAHs in mussels. In oysters, correlations with pesticides and metals were about equally frequent, but correlations with PAHs were still rare. In mytilids, correlations with metals predominated. Negative and positive correlations with metals occurred with about the same frequency in both taxa. The majority of correlations with pesticides were negative in oysters; not so for mytilids. Of the many significant correlations involving parasites, few involved single-celled eukaryotes or prokaryotes. The vast majority involved multi-cellular eukaryotes and nearly all of them either cestodes, trematode sporocysts, or trematode metacercariae. The few correlations for single-celled parasites all involved proliferating protozoa or protozoa reaching high body burdens through transmission. The tendency for the larger or more numerous parasites to be involved suggests that unequal sequestration of contaminates between host and parasite tissue is a potential mediator. An alternative is that contaminants differentially affect parasites and their hosts by varying host susceptibility or parasite survival.
- Subjects :
- 0106 biological sciences
Oyster
Databases, Factual
010501 environmental sciences
Aquatic Science
Mussel Watch Program
Oceanography
01 natural sciences
biology.animal
Animals
Parasites
14. Life underwater
Mollusca
ComputingMilieux_MISCELLANEOUS
0105 earth and related environmental sciences
Analysis of Variance
Principal Component Analysis
biology
Ecology
010604 marine biology & hydrobiology
Life Sciences
General Medicine
Mussel
Pesticide
Bivalvia
biology.organism_classification
Pollution
Hydrocarbons
Ostreidae
Protozoa
Sentinel Surveillance
Water Pollutants, Chemical
Environmental Monitoring
Subjects
Details
- Language :
- English
- ISSN :
- 01411136 and 18790291
- Database :
- OpenAIRE
- Journal :
- Marine Environmental Research, Marine Environmental Research, Elsevier science, 2008, 65 (2), pp.101. ⟨10.1016/j.marenvres.2007.09.003⟩
- Accession number :
- edsair.doi.dedup.....356706f51cd3753f1d7297311b1e53f5
- Full Text :
- https://doi.org/10.1016/j.marenvres.2007.09.003⟩