Chemical contamination assessment in mangrove-lined Caribbean coastal systems using the oyster Crassostrea rhizophorae as biomonitor species

Autor: Manu Soto, Nestor Etxebarria, Andrea Luna-Acosta, Michael J. Ahrens, Ionan Marigómez, Felix Espinoza, Javier R. Aguirre-Rubí
Rok vydání: 2017
Předmět:
Pollution
Oyster
Monitoring
010504 meteorology & atmospheric sciences
West Indies
Health
Toxicology and Mutagenesis
media_common.quotation_subject
Colombia
010501 environmental sciences
01 natural sciences
Contaminación del agua -- Investigaciones
biology.animal
Halogenated Diphenyl Ethers
Hydrocarbons
Chlorinated
Animals
Environmental Chemistry
Ecotoxicology
Crassostrea
Pesticides
Polycyclic Aromatic Hydrocarbons
0105 earth and related environmental sciences
media_common
Caribbean
Pollutant
biology
Ecology
Pollution indices
General Medicine
Contamination
Polychlorinated Biphenyls
Bioaccumulation
Ecosystemhealth
Caribbean Region
Seafood
Metals
Synthetic musk
Environmental chemistry
Manglares -- Investigaciones
Mangrove cupped oyster
Environmental science
Mangrove
Crassotrea
Hexachlorocyclohexane
Zdroj: Expeditio: repositorio UTadeo
Universidad de Bogotá Jorge Tadeo Lozano
instacron:Universidad de Bogotá Jorge Tadeo Lozano
ISSN: 1614-7499
0944-1344
DOI: 10.1007/s11356-017-9159-2
Popis: This paper aims to contribute to the use of mangrove cupped oyster, Crassostrea rhizophorae, as a biomonitor species for chemical contamination assessment in mangrove-lined Caribbean coastal systems. Sampling was carried out in eight localities (three in Nicaragua and five in Colombia) with different types and levels of contamination. Oysters were collected during the rainy and dry seasons of 2012-2013 and the tissue concentrations of metals, polycyclic aromatic hydrocarbons (PAHs), and persistent organic pollutants (POPs) were determined. Low tissue concentrations of metals (except Hg) and PAHs; moderate-to-high tissue concentrations of Hg, hexachlorocyclohexanes (HCHs), and dichlorodiphenyl-trichloroethanes (DDTs); detectable levels of chlorpyrifos, polychlorinated biphenyls (PCBs) (mainly CB28, CB118, CB138 and CB 153) and brominated diphenyl ethers 85 (BDE85); and negligible levels of musks were recorded in Nicaraguan oysters. A distinct profile of POPs was identified in Colombia, where the tissue concentrations of PCBs and synthetic musk fragrances were low to moderate, and Ag, As, Cd, Pb, and PAHs ranged from moderate to extremely high. Overall, the values recorded for HCHs, DDTs and PCBs in Nicaraguan mangrove cupped oysters greatly exceeded the reference values in tissues of C. rhizophorae from the Wider Caribbean Region, whereas only the levels of PCBs were occasionally surpassed in Colombia. Different contaminant profiles were distinguished between oysters from Nicaragua and Colombia in radar plots constructed using the main groups of contaminants (metals, PAHs, musks, PCBs, and organochlorine pesticides (OCPs)). Likewise, integrated pollution indices revealed differences in the levels of contaminants. Moreover, the profiles and levels in oyster tissues also varied with season. Thus, principal component analysis clearly discriminated Nicaraguan and Colombian localities and, especially in Colombia, seasonal trends in chemical contamination and differences amongst localities were evidenced. The geographical and environmental disparity of the studied scenarios may represent to a large extent the diversity of mangrove-lined Caribbean coastal systems and therefore the present results support the use of C. rhizophorae as suitable biomonitor species at Caribbean regional scale, where seasonal variability is a major factor controlling pollutant mobility and bioavailability.
Databáze: OpenAIRE
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