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首页> 外文期刊>Environmental toxicology and chemistry >Organochlorines, Perfluoroalkyl Substances, Mercury, and Egg Incubation Temperature in an Arctic Seabird: Insights from Data Loggers
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Organochlorines, Perfluoroalkyl Substances, Mercury, and Egg Incubation Temperature in an Arctic Seabird: Insights from Data Loggers

机译：北极海鸟中的有机氯，全氟烷基物质，汞和蛋孵化温度：数据记录仪的见解

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In birds, incubation-related behaviors and brood patch formation are influenced by hormonal regulation such as prolactin secretion. Brood patch provides efficient heat transfer between the incubating parent and the developing embryo in the egg. Importantly, several environmental contaminants are already known to have adverse effects on avian reproduction. However, relatively little is known about the effect of contaminants on incubation temperature (T-inc) in wild birds. By using temperature thermistors placed into artificial eggs, we investigated whether the most contaminated parent birds are less able to provide appropriate egg warming and thus less committed to incubating their clutch. Specifically, we investigated the relationships among 3 groups of contaminants (organochlorines, perfluoroalkyl substances [PFASs], and mercury [Hg]) with T-inc and also with prolactin concentrations and brood patch size in incubating Arctic black-legged kittiwakes (Rissa tridactyla). Our results reveal that among the organochlorines considered, only blood levels of oxychlordane, the main metabolite of chlordane, a banned pesticide, were negatively related to the minimum incubation temperature in male kittiwakes. Levels of PFASs and Hg were unrelated to T-inc in kittiwakes. Moreover, our study suggests a possible underlying mechanism: since we reported a significant and negative association between blood oxychlordane concentrations and the size of the brood patch in males. Finally, this reduced T-inc in the most oxychlordane-contaminated kittiwakes was associated with a lower egg hatching probability. Environ Toxicol Chem 2018;37:2881-2894. (c) 2018 SETAC
机译：在鸟类中，与孵化有关的行为和育雏斑块的形成受激素调节（如催乳激素分泌）的影响。育雏贴片可在孵化的亲本和卵中正在发育的胚胎之间提供有效的热传递。重要的是，已知几种环境污染物会对禽类繁殖产生不利影响。但是，关于污染物对野生鸟类孵化温度（T-inc）的影响知之甚少。通过使用放置在人工卵中的温度热敏电阻，我们调查了受污染最严重的亲禽是否无法提供适当的卵温升，从而不太愿意孵化它们的离合器。具体来说，我们研究了在孵化北极黑脚kit（Rissa tridactyla）时，三类污染物（有机氯，全氟烷基物质[PFASs]和汞[Hg]）与T-inc，催乳素浓度和育雏斑大小之间的关系。 。我们的研究结果表明，在所考虑的有机氯中，只有血液中的氯丹（氯丹的主要代谢物）（一种禁用的农药）的血液水平与雄性Kittiwawas的最低孵化温度负相关。全氟辛烷磺酸中的全氟辛烷磺酸和汞的水平与T-inc无关。此外，我们的研究提出了一种可能的潜在机制：由于我们报道了男性血液中的氯氧丹浓度与育雏斑块大小之间存在显着的负相关关系。最后，在大多数受氯丹定污染的Kittiwakes中，这种T-inc降低的现象与较低的卵孵化率有关。 Environ Toxicol Chem 2018; 37：2881-2894。 （c）2018年SETAC

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