Persistent organic pollutant levels in eggs of leatherback turtles (Dermochelys coriacea) point to a decrease in hatching success
| Autor: | Eva De Andrés, Belén Gómara, Adolfo Marco, Daniel González-Paredes, José Ruiz-Martín |
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| Přispěvatelé: | Fundación BBVA, Universidad Internacional Menéndez Pelayo, Consejo Superior de Investigaciones Científicas (España) |
| Rok vydání: | 2016 |
| Předmět: |
Costa Rica
0106 biological sciences Pollutants Environmental Engineering Health Toxicology and Mutagenesis Zoology Environmental pollution 010501 environmental sciences Biology 01 natural sciences Gas Chromatography-Mass Spectrometry Toxicology Polybrominated diphenyl ethers Nest Tandem Mass Spectrometry Halogenated Diphenyl Ethers Animals Environmental Chemistry Nesting season Hatchling Ovum 0105 earth and related environmental sciences Persistent organic pollutant Reproductive success Hatching 010604 marine biology & hydrobiology Reproduction Leatherback Public Health Environmental and Occupational Health General Medicine General Chemistry Polychlorinated Biphenyls Pollution Turtles Environmental Pollutants Female Sea turtles Environmental Monitoring |
| Zdroj: | Digital.CSIC. Repositorio Institucional del CSIC instname |
| Popis: | Sea turtles are susceptible to environmental pollution, since many harmful effects have been reported for different chemicals over the last two decades. In this context, persistent organic pollutants (POPs), such as polychlorinated biphenyls (PCBs) and polybrominated diphenyl ethers (PBDEs) are of particular concern due to their endocrine-disrupting nature. The aims of this study were to provide additional baseline data on PCB and PBDE concentrations in eggs of Dermochelys coriacea; and to investigate whether any of the congeners could compromise reproductive success in this species. A total of 18 nests from different females were studied during the nesting season of 2008 at Reserva Pacuare Beach, in the Caribbean side of Costa Rica. Reproductive parameters (viability, fertility and hatching rates) were calculated for all nests and hatchling morphometrics were successfully measured in 8 of them. Two to three fresh eggs per nest were taken for contaminant study. Different congeners of POPs were purified and identified using gas chromatography (GC) coupled to an ion trap detector (GC-ITD MS/MS), as described below. Mean ± SD concentrations were calculated for POP congeners within each nest and clustering was also evaluated. Correlations were performed searching for potential relationships with reproductive parameters. POP levels were similar to those reported in French-Guiana populations and slightly lower than those associated to Florida populations. Sum of PBDEs showed a negative correlation to the hatching success, suggesting potential harmful effects of these contaminants on the reproduction of leatherbacks. Financial support came from the BBVA foundation (BIOCON06/056), Consejo Superior de Investigaciones Científicas of Spain (CSIC) and the International University Menéndez Pelayo (Madrid, Spain). |
| Databáze: | OpenAIRE |
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