Physiological and Reproductive Disorders of Baltic Amphipods Gmelinoides fasciatus Exposed to 4-tert-Octylphenol

IF 0.7 4区环境科学与生态学 Q4 ECOLOGY Contemporary Problems of Ecology Pub Date : 2024-04-09 DOI:10.1134/s199542552402001x

N. A. Berezina, N. M. Sukhikh, A. V. Egorova, Z. A. Zhakovskaya

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Abstract

Alkylphenols, which are industrial chemicals, are xenoestrogens; however, their sublethal effects on aquatic animals are poorly studied. The aim of this work is to study possible metabolic and reproductive disorders in amphipods using the example of Gmelinoides fasciatus from the Gulf of Finland (Baltic Sea) after experimental exposure to 4-tert-octylphenol (4t-OP) from the group of alkylphenols. The mortality of G. fasciatus amphipods in 4t-OP concentration ranges from 0.5 to 1000 μg/L after 96 h and 7 days increases with increasing concentration. At 4t-OP concentrations of 0.5 and 5 μg/L, the mortality of G. fasciatus has not been observed. At a concentration of 20 μg/L, after 7 days, the mortality of crustaceans is 20%; at a concentration of 100 μg/L, it is 60%. Exposure to sublethal concentrations of 4t-OP (0.5 μg/L) resulted in a decrease in sexual activity of these amphipods after 1 week: only 25% of amphipods retain precopulatory pairs versus 100% in control. Under chronic exposure (28 days) to the lowest concentration, males show signs of demasculinization (a decrease in the width of the gnatopods and an increase in the depth of the coxal plates); females show a decrease in the overall fecundity and irreversible disturbances in the state of embryos (a high proportion (>50%) of embryos stop their development at different stages of organogenesis). The study shows significant functional disorders of metabolic processes and reproduction in crustaceans even when exposed to nonlethal concentrations of octylphenol. These results confirm the high toxicity of this industrial pollutant, the presence of which in the aquatic environment can lead to irreversible changes in the biota.

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暴露于 4-叔辛基苯酚的波罗的海片脚类动物 Gmelinoides fasciatus 的生理和生殖障碍

摘要烷基酚是一种工业化学品，也是一种异雌激素；然而，对其对水生动物的亚致死效应的研究却很少。这项工作的目的是以芬兰湾（波罗的海）的 Gmelinoides fasciatus 为例，研究实验性接触烷基酚类中的 4-叔辛基苯酚（4t-OP）后，片脚类动物可能出现的代谢和生殖紊乱。在 4t-OP 浓度为 0.5 至 1000 μg/L 的条件下，法氏两足类在 96 小时和 7 天后的死亡率随着浓度的增加而增加。在 4t-OP 浓度为 0.5 和 5 μg/L 时，未观察到 G. fasciatus 死亡。浓度为 20 μg/L 时，7 天后甲壳动物的死亡率为 20%；浓度为 100 μg/L 时，死亡率为 60%。接触亚致死浓度的 4t-OP（0.5 μg/L）一周后，这些片脚类动物的性活动会减少：只有 25% 的片脚类动物保留了生殖前配对，而对照组则为 100%。在长期接触（28 天）最低浓度的情况下，雄性片脚类动物会出现去雄性化的迹象（趾甲宽度减小，趾甲板深度增加）；雌性片脚类动物的总体繁殖力下降，胚胎状态出现不可逆的紊乱（很高比例（50%）的胚胎在器官形成的不同阶段停止发育）。研究表明，即使暴露于非致死浓度的辛基酚，甲壳类动物的新陈代谢过程和繁殖也会出现严重的功能紊乱。这些结果证实了这种工业污染物的高毒性，在水生环境中存在这种污染物会导致生物群发生不可逆转的变化。

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

Contemporary Problems of Ecology 环境科学-生态学

CiteScore

1.40

自引率

12.50%

发文量

审稿时长

6-12 weeks

期刊介绍： Contemporary Problems of Ecology is a multidisciplinary periodical that publishes original works on the following subjects: theoretical and methodical issues of ecology, regional aspects of ecology, regional ecological disasters, structure and functioning of ecosystems, anthropogenic transformation of ecosystems. All basic aspects of modern ecology, including the most complicated interactions between living organisms and their environment, are presented. Some of the journal issues are dedicated to global changes in biological diversity at various levels of organization (populations, species, ecosystems) principles and methods of nature conservation.