Increased metabolic demand reveals morpho-functional impacts caused by settleable atmospheric particulate matter on fish gills

IF 4.2 3区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

Environmental toxicology and pharmacology Pub Date : 2024-11-26 DOI:10.1016/j.etap.2024.104593

C.F. De Angelis , M.P. Soares , I.L. Cardoso , E.W. Taylor , H. Sadauskas-Henrique , E.N. Fragoso-Moura , J.A.M. Milan , I.C. Souza , D.A. Wunderlin , M.V. Monferrán , M.N. Fernandes , C.A.C. Leite

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引用次数: 0

Abstract

Exposure to environmentally relevant levels of settleable atmospheric particulate matter (SePM) limits the aerobic performance of inactive healthy adult fish. We evaluated the gill morpho-functional impacts (gill structure and ionic balance) caused by SePM exposure (96 h) in Nile tilapia when fish is impelled to maximal aerobic swimming effort. In control fish, swimming reduced epithelial filament thickness (EFT, 25 %), increased the distance between lamellae (DL, 21 %), and reduced the plasma Na⁺ (5 %). In resting fish, SePM exposure increased EFT (11 %), reduced DL (30 %), lamellar height (LH, 18 %), and plasma Na⁺ (4 %), whereas increased Cl^- and K⁺ (8 % and 20 %). In SePM-exposure fish, swimming reduced EFT (40 %), increased DL (30 %) and LH (30 %), while reduced Na⁺ and Cl^- (9 % and 18 %), and increased K⁺ when compared to inactive SePM-exposed fish. These morpho-functional limitations may compromise whole-body maintenance and swimming recovery, affecting the fish ability to perform at higher activity levels.

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新陈代谢需求的增加揭示了可沉降大气颗粒物对鱼鳃造成的形态功能影响

暴露于环境相关水平的可沉降大气颗粒物（SePM）会限制不活动的健康成鱼的有氧性能。我们评估了尼罗罗非鱼在暴露于可沉降性大气颗粒物（SePM）（96 小时）后，当鱼类被迫做出最大有氧游泳努力时，鳃的形态功能（鳃结构和离子平衡）所受到的影响。在对照组鱼类中，游泳减少了上皮细胞丝厚度（EFT，25%），增加了薄片之间的距离（DL，21%），并降低了血浆 Na+（5%）。在静止的鱼类中，暴露于 SePM 会增加 EFT（11%），减少 DL（30%）、薄片高度（LH，18%）和血浆 Na+（4%），同时增加 Cl- 和 K+（8% 和 20%）。与不活动的暴露于 SePM 的鱼类相比，在暴露于 SePM 的鱼类中，游泳减少了 EFT（40%），增加了 DL（30%）和 LH（30%），同时减少了 Na+ 和 Cl-（9% 和 18%），增加了 K+。这些形态功能上的限制可能会损害全身维持和游泳恢复能力，从而影响鱼类在较高活动水平下的活动能力。

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来源期刊

Environmental toxicology and pharmacology 医学-毒理学

CiteScore

7.00

自引率

4.70%

发文量

185

审稿时长

34 days

期刊介绍： Environmental Toxicology and Pharmacology publishes the results of studies concerning toxic and pharmacological effects of (human and veterinary) drugs and of environmental contaminants in animals and man. Areas of special interest are: molecular mechanisms of toxicity, biotransformation and toxicokinetics (including toxicokinetic modelling), molecular, biochemical and physiological mechanisms explaining differences in sensitivity between species and individuals, the characterisation of pathophysiological models and mechanisms involved in the development of effects and the identification of biological markers that can be used to study exposure and effects in man and animals. In addition to full length papers, short communications, full-length reviews and mini-reviews, Environmental Toxicology and Pharmacology will publish in depth assessments of special problem areas. The latter publications may exceed the length of a full length paper three to fourfold. A basic requirement is that the assessments are made under the auspices of international groups of leading experts in the fields concerned. The information examined may either consist of data that were already published, or of new data that were obtained within the framework of collaborative research programmes. Provision is also made for the acceptance of minireviews on (classes of) compounds, toxicities or mechanisms, debating recent advances in rapidly developing fields that fall within the scope of the journal.