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Interspecific Variation in Nematode Responses to Metals.
Environmental Toxicology and Chemistry ( IF 4.1 ) Pub Date : 2020-03-29 , DOI: 10.1002/etc.4689
Andrew Heaton 1 , Elizabeth Faulconer 1 , Emma Milligan 1 , Mary B Kroetz 1 , Scott M Weir 2 , Scott Glaberman 1, 3
Affiliation  

Performing toxicity testing on multiple species with differing degrees of evolutionary relatedness can provide important information on how chemical sensitivity varies among species and can help pinpoint the biological drivers of species sensitivity. Such knowledge could ultimately be used to design better multispecies predictive ecological risk assessment models and identify particularly sensitive species. However, laboratory toxicity tests involving multiple species can also be resource intensive, especially when each species has unique husbandry conditions. We performed lethality tests with 2 metals, copper chloride and zinc chloride, on 5 different nematode species, which are nested in their degree of evolutionary relatedness: Caenorhabditis briggsae, Caenorhabditis elegans, Oscheius myriophila, Oscheius tipulae, and Pristionchus pacificus. All species were successfully cultured and tested concurrently with limited resources, demonstrating that inexpensive, multispecies nematode toxicity testing systems are achievable. The results indicate that P. pacificus is the most sensitive to both metals. Conversely, C. elegans is the least sensitive species to copper, but the second most sensitive to zinc, indicating that species relationships do not necessarily predict species sensitivity. Toxicity testing with additional nematode species and types of chemicals is feasible and will help form more generalizable conclusions about relative species sensitivity. Environ Toxicol Chem 2020;39:1006-1016. © 2020 SETAC.

中文翻译:

线虫对金属的种间变化

对具有不同进化相关程度的多个物种进行毒性测试,可以提供有关物种间化学敏感性如何变化的重要信息,并可以帮助查明物种敏感性的生物学驱动因素。这些知识最终可用于设计更好的多物种预测性生态风险评估模型,并确定特别敏感的物种。但是,涉及多个物种的实验室毒性测试也可能需要大量资源,特别是当每个物种都有独特的饲养条件时。我们对5种不同的线虫物种进行了致死性测试,其中的两种金属分别为氯化铜和氯化锌,它们的进化相关程度嵌套在一起:毛线虫(Caenorhabditis briggsae),秀丽隐杆线虫(Caenorhabditis elegans),米氏Oscheius myriophila,Oscheius tipulae和Pristionchus pacificus。所有物种均在有限的资源下成功地进行了培养和测试,这表明可以实现廉价的多物种线虫毒性测试系统。结果表明,P。pacificus对这两种金属最敏感。相反,秀丽隐杆线虫对铜的敏感性最低,但对锌的敏感性第二高,这表明物种关系不一定能预测物种的敏感性。使用其他线虫种类和化学物质进行毒性测试是可行的,并将有助于形成有关相对种类敏感性的更笼统的结论。Environ Toxicol Chem 2020; 39:1006-1016。©2020 SETAC。结果表明,P。pacificus对这两种金属最敏感。相反,秀丽隐杆线虫对铜的敏感性最低,但对锌的敏感性第二高,这表明物种关系不一定能预测物种的敏感性。使用其他线虫种类和化学物质进行毒性测试是可行的,并将有助于形成有关相对种类敏感性的更笼统的结论。Environ Toxicol Chem 2020; 39:1006-1016。©2020 SETAC。结果表明,P。pacificus对这两种金属最敏感。相反,秀丽隐杆线虫对铜的敏感性最低,但对锌的敏感性第二高,这表明物种关系不一定能预测物种的敏感性。使用其他线虫种类和化学物质进行毒性测试是可行的,并将有助于形成有关相对种类敏感性的更笼统的结论。Environ Toxicol Chem 2020; 39:1006-1016。©2020 SETAC。使用其他线虫种类和化学物质进行毒性测试是可行的,并将有助于形成有关相对种类敏感性的更笼统的结论。Environ Toxicol Chem 2020; 39:1006-1016。©2020 SETAC。使用其他线虫种类和化学物质进行毒性测试是可行的,并将有助于形成有关相对种类敏感性的更笼统的结论。Environ Toxicol Chem 2020; 39:1006-1016。©2020 SETAC。
更新日期:2020-03-29
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