Assessment of ecosystem health disturbance in mangrove-lined Caribbean coastal systems using the oyster Crassostrea rhizophorae as sentinel species
| Autor: | Andrea Luna-Acosta, Luisa Villamil, Javier R. Aguirre-Rubí, Michael J. Ahrens, Maren Ortiz-Zarragoitia, Beñat Zaldibar, Urtzi Izagirre, Ionan Marigómez |
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| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
Pollution Oyster Environmental Engineering Sentinel species media_common.quotation_subject Histopathology Nicaragua Colombia 010501 environmental sciences 01 natural sciences biology.animal Biomonitoring Animals Environmental Chemistry Ecosystem Crassostrea Condition Waste Management and Disposal 0105 earth and related environmental sciences media_common Ecosystem health biology Ecology Reproduction 010604 marine biology & hydrobiology biology.organism_classification Caribbean Region Sentinel Species Mangrove cupped oyster Environmental science Mangrove Water Pollutants Chemical Biomarkers Environmental Monitoring |
| Zdroj: | Universidad de La Sabana Intellectum Repositorio Universidad de La Sabana Repositorio Universidad de la Sabana Universidad de la Sabana instacron:Universidad de la Sabana |
| ISSN: | 0048-9697 |
| DOI: | 10.1016/j.scitotenv.2017.08.098 |
| Popis: | 18 páginas This investigation was aimed at contributing to develop a suitable multi-biomarker approach for pollution monitoring in mangrove-lined Caribbean coastal systems using as sentinel species, the mangrove cupped oyster, Crassostrea rhizophorae. A pilot field study was carried out in 8 localities (3 in Nicaragua; 5 in Colombia), characterized by different environmental conditions and subjected to different levels and types of pollution. Samples were collected in the rainy and dry seasons of 2012–2013. The biological effects at different levels of biological complexity (Stress-on-Stress response, reproduction, condition index, tissue-level biomarkers and histopathology) were determined as indicators of health disturbance, integrated as IBR/n index, and compared with tissue burdens of contaminants in order to achieve an integrative biomonitoring approach. Though modulated by natural variables and confounding factors, different indicators of oyster health, alone and in combination, were related to the presence of different profiles and levels of contaminants present at low-to-moderate levels. Different mixtures of persistent (As, Cd, PAHs) and emerging chemical pollutants (musk fragrances), in combination with different levels of organic and particulate matter resulting from seasonal oceanographic variability and sewage discharges, and environmental factors (salinity, temperature) elicited a different degree of disturbance in ecosystem health condition, as reflected in sentinel C. rhizophorae. As a result, IBR/n was correlated with pollution indices, even though the levels of biological indicators of health disturbance and pollutants were low-to-moderate, and seasonality and the incidence of confounding factors were remarkable. Our study supports the use of simple methodological approaches to diagnose anomalies in the health status of oysters from different localities and to identify potential causing agents and reflect disturbances in ecosystem health. Consequently, the easy methodological approach used herein is useful for the assessment of health disturbance in a variety of mangrove-lined Caribbean coastal systems using mangrove cupped oysters as sentinel species. |
| Databáze: | OpenAIRE |
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