Updated Data on Mercury and DDE in Striped Bass (Morone saxatilis) in Relation to Consumption Advisories for the Saint John River, New Brunswick, Canada

IF 0.5 4区环境科学与生态学 Q4 BIODIVERSITY CONSERVATION Northeastern Naturalist Pub Date : 2023-06-29 DOI:10.1656/045.030.0208

S. Andrews, David Roth, K. Kidd, S. Pavey, Bethany Reinhart, B. Hayden, M. Dadswell, T. Linnansaari, R. Curry

引用次数: 1

Abstract

Abstract - The Morone saxatilis (Striped Bass) population in Saint John River (SJR), NB, Canada, collapsed in the 1970s concurrent with dam construction, overfishing, and chemical pollution that may have impeded reproduction. To assess whether a chemical threat to Striped Bass or a health threat to fish consumers persists, we examined DDT and total mercury (THg) levels from 29 Striped Bass captured in the SJR including 16 genomically typed as SJR natives. DDT and DDD in female gonads were below detectable levels, and DDE averaged 0.08 ± 0.09 mg/kg wet weight (ww) but was considered too low to threaten reproduction. Total mercury in muscle and liver varied from 0.68 to 2.10 mg/kg and 0.35 to 3.27 mg/kg ww, respectively and exceeded Health Canada guidelines in all samples. We suggest regulators should update advisories for consumption including actively informing the public of the risk.

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加拿大新不伦瑞克省圣约翰河有关条纹鲈鱼(Morone saxatilis)中汞和DDE的最新数据

摘要-20世纪70年代，加拿大NB圣约翰河（SJR）的Morone saxatilis（条纹鲈鱼）种群崩溃，同时大坝建设、过度捕捞和化学污染可能阻碍了繁殖。为了评估对条纹鲈鱼的化学威胁或对鱼类消费者的健康威胁是否持续存在，我们检测了在SJR捕获的29只条纹鲈鱼的滴滴涕和总汞（THg）水平，其中包括16只被基因分型为SJR本地人。雌性性腺中的DDT和DDD低于可检测水平，DDE平均为0.08±0.09 mg/kg湿重，但被认为太低，不会威胁生殖。肌肉和肝脏中的总汞含量分别为0.68至2.10 mg/kg和0.35至3.27 mg/kg，在所有样本中都超过了加拿大卫生部的指导方针。我们建议监管机构应更新消费建议，包括积极告知公众风险。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Northeastern Naturalist 环境科学-生态学

CiteScore

1.10

自引率

0.00%

发文量

审稿时长

18-36 weeks

期刊介绍： The Northeastern Naturalist covers all aspects of the natural history sciences of terrestrial, freshwater, and marine organisms and the environments of the northeastern portion of North America, roughly bounded from Virginia to Missouri, north to Minnesota and Nunavut, east to Newfoundland, and south back to Virginia. Manuscripts based on field studies outside of this region that provide information on species within this region may be considered at the Editor’s discretion. The journal welcomes manuscripts based on observations and research focused on the biology of terrestrial, freshwater, and marine organisms and communities as it relates to their life histories and their function within, use of, and adaptation to the environment and the habitats in which they are found, as well as on the ecology and conservation of species and habitats. Such studies may encompass measurements, surveys, and/or experiments in the field, under lab conditions, or utilizing museum and herbarium specimens. Subject areas include, but are not limited to, anatomy, behavior, biogeography, biology, conservation, evolution, ecology, genetics, parasitology, physiology, population biology, and taxonomy. Strict lab, modeling, and simulation studies on natural history aspects of the region, without any field component, will be considered for publication as long as the research has direct and clear significance to field naturalists and the manuscript discusses these implications.