Squid beaks as a proxy for mercury concentrations in muscle of the giant warty squid Moroteuthopsis longimana

IF 3 3区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

Marine environmental research Pub Date : 2024-11-16 DOI:10.1016/j.marenvres.2024.106841

Sara Lopes-Santos , José C. Xavier , José Seco , João P. Coelho , Philip R. Hollyman , Eduarda Pereira , Richard A. Phillips , José P. Queirós

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Abstract

Cephalopods play a major role in marine food webs as both predators and prey. Although most of the Hg in cephalopods is present in the muscle, most studies on its accumulation by predators are based on concentrations in beaks. Here, using upper and lower beaks and buccal masses of Moroteuthopsis longimana, we evaluated the relationship between Hg concentrations in different cephalopod tissues. Hg concentrations in muscle tissue (329.9 ± 166.4 ng.g⁻¹ dw) were ≈100-fold higher than in different sections of the upper (3.5 ± 1.4 ng.g⁻¹ dw) and lower (3.5 ± 1.0 ng.g⁻¹ dw) beaks. A positive linear relationship was found between the Hg in the beak wing and in the muscle. Hg concentrations in the wing are therefore a useful proxy for the total Hg body burden, and their analysis provides a means of assessing the levels, transport and fate of Hg in marine ecosystems.

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乌贼喙作为巨疣鱿（Moroteuthopsis longimana）肌肉中汞浓度的替代物。

头足类在海洋食物网中扮演着捕食者和猎物的重要角色。虽然头足类动物体内的大部分汞存在于肌肉中，但有关捕食者体内汞积累的研究大多基于喙中的浓度。在这里，我们利用长尾鳕（Moroteuthopsis longimana）的上下喙和颊块，评估了不同头足类组织中汞浓度之间的关系。肌肉组织中的汞浓度（329.9 ± 166.4 ng.g-1 dw）是上喙（3.5 ± 1.4 ng.g-1 dw）和下喙（3.5 ± 1.0 ng.g-1 dw）不同部分的≈100倍。喙翅中的汞含量与肌肉中的汞含量呈正线性关系。因此，喙翼中的汞浓度是体内总汞负荷的有效代表，对其进行分析可以评估汞在海洋生态系统中的水平、迁移和归宿。

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

Marine environmental research 环境科学-毒理学

CiteScore

5.90

自引率

3.00%

发文量

217

审稿时长

46 days

期刊介绍： Marine Environmental Research publishes original research papers on chemical, physical, and biological interactions in the oceans and coastal waters. The journal serves as a forum for new information on biology, chemistry, and toxicology and syntheses that advance understanding of marine environmental processes. Submission of multidisciplinary studies is encouraged. Studies that utilize experimental approaches to clarify the roles of anthropogenic and natural causes of changes in marine ecosystems are especially welcome, as are those studies that represent new developments of a theoretical or conceptual aspect of marine science. All papers published in this journal are reviewed by qualified peers prior to acceptance and publication. Examples of topics considered to be appropriate for the journal include, but are not limited to, the following: – The extent, persistence, and consequences of change and the recovery from such change in natural marine systems – The biochemical, physiological, and ecological consequences of contaminants to marine organisms and ecosystems – The biogeochemistry of naturally occurring and anthropogenic substances – Models that describe and predict the above processes – Monitoring studies, to the extent that their results provide new information on functional processes – Methodological papers describing improved quantitative techniques for the marine sciences.