The effects of environmental stressors on gonad biomarkers of a sentinel marine bivalve, Mytilus galloprovincialis

IF 0.8 4区生物学 Q3 ZOOLOGY

Molluscan Research Pub Date : 2022-09-17 DOI:10.1080/13235818.2022.2113601

Zeyneb Ladouali, Naouel Boudjema, Farida Loudjani, S. Boubsil, C. Abdennour

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引用次数: 1

Abstract

ABSTRACT The aim of this work is to investigate the effects of environmental stressors on male reproductive biomarkers in sentinel species of bivalves inhabiting Annaba estuaries, considered to be reservoirs receiving industrial, agricultural, and domestic discharges. Male Mytilus galloprovincialis were collected in four seasons from a non-polluted site (S1) and two other locations receiving untreated sewage (S2) and a mixture of contaminants (S3). Testicular sperm concentration, motility, velocity, the amplitude of lateral head displacement (ALH), the beat cross frequency (BCF), spermatozoan DNA fragmentation, and histological profiles were evaluated. Individuals from S2 and S3 have diminished sperm concentration, motility, velocity, ALH and BCF, along with a significantly increased spermatozoan DNA fragmentation that was much higher in S3. Testicular tissues demonstrated histo-pathological alterations in mussels subjected to anthropogenic activities during the four seasons. In conclusion, reproductive biomarkers of male mussels were both spatially and temporally variable, which is probably correlated to pollution types and the changing seasonal stressors.

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环境应激源对海洋双壳类鹦鹉螺性腺生物标志物的影响

摘要本工作的目的是研究环境压力对居住在Annaba河口的双壳类前哨物种雄性生殖生物标志物的影响，Annaba河口被认为是接收工业、农业和家庭排放的水库。从一个未受污染的地点（S1）和另外两个接受未经处理的污水（S2）和污染物混合物（S3）的地点，分四个季节收集雄性加洛氏Mytilus galloprovincialis。评估睾丸精子浓度、活力、速度、头部侧向位移幅度（ALH）、搏动交叉频率（BCF）、精子DNA断裂和组织学特征。S2和S3的个体精子浓度、活力、速度、ALH和BCF降低，精子DNA片段显著增加，S3的精子DNA片段要高得多。在四个季节受到人为活动影响的贻贝中，睾丸组织表现出组织病理学改变。总之，雄性贻贝的生殖生物标志物在空间和时间上都是可变的，这可能与污染类型和季节性压力的变化有关。

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

Molluscan Research 生物-动物学

CiteScore

1.80

自引率

10.00%

发文量

审稿时长

>12 weeks

期刊介绍： Molluscan Research is an international journal for the publication of authoritative papers and review articles on all aspects of molluscan research, including biology, systematics, morphology, physiology, ecology, conservation, biogeography, genetics, molecular biology and palaeontology. While the scope of the journal is worldwide, there is emphasis on studies relating to Australasia and the Indo-west Pacific, including East and South East Asia. The journal’s scope includes revisionary papers, monographs, reviews, theoretical papers and briefer communications. Monographic studies of up to 73 printed pages may also be considered. The journal has been published since 1957 (as the Journal of the Malacological Society of Australia until 1993). It is free to members of the Malacological Society of Australasia and the Society for the Study of Molluscan Diversity.