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首页> 外文期刊>Journal of Environmental Science and Health >Follicular apoptosis in the mussel (Mytella strigata) as potential indicator of environmental stress in coastal ecosystems
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Follicular apoptosis in the mussel (Mytella strigata) as potential indicator of environmental stress in coastal ecosystems

机译：贻贝（Mytella strigata）中的卵泡凋亡是沿海生态系统中环境胁迫的潜在指标

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摘要

Follicular apoptosis in the tropical mussel Mytella strigata was assessed in three coastal lagoons located in the southern Gulf of California, Mexico. Mussels were collected from three coastal lagoons associated with different scenarios of anthropogenic stress during one year. The gonad of each mussel was dissected, weighed, and sampled for histology and apoptosis analysis by TUNEL labeling. Two apoptotic indices were used: the apoptotic index of cells (AIC) based on the number of follicular cells in apoptosis in one thousand cells counted per gonad, and the apoptotic index of follicles (AIF) based on the number of follicular cells per follicle per gonad. Both indices showed high association with each other for all developmental stages, although AIF seemed to better discriminate among sites. Higher AIF and AIC were observed at the Urias Estuary (1.6 and 1.5 respectively) ranked as highly polluted, followed by Ensenada del Pabellon (0.82 and 0.95 respectively), ranked as moderately polluted, and the Teacapan Estuary (0.57 and 0.76 respectively) ranked as slightly polluted. Our data indicate that the apoptotic index in tropical mussels could be a useful indicator of environmental stress in coastal ecosystems; however, the ecological relevance of follicular apoptosis in polluted environments needs further investigation.
机译：在位于墨西哥加利福尼亚南部海湾的三个沿海泻湖中，对热带贻贝Mytella strigata中的卵泡凋亡进行了评估。在一年中，从三个沿海泻湖收集了贻贝，这些泻湖与人为压力的不同情况相关。解剖每个贻贝的性腺，称重，并取样以通过TUNEL标记进行组织学和细胞凋亡分析。使用了两种凋亡指数：基于每个性腺计数的一千个细胞中凋亡中的卵泡细胞数量的细胞凋亡指数（AIC），以及基于每个性腺每个卵泡细胞数量的卵泡的凋亡指数（AIF）。性腺。尽管AIF似乎更好地区分了站点，但两个指数在所有发展阶段都显示出高度关联。在乌里亚斯河口（分别为1.6和1.5）被高度污染，观察到较高的AIF和AIC，其次是中度污染的Ensenada del Pabellon（分别为0.82和0.95），而Teacapan河口（分别为0.57和0.76）则被列为高污染。轻微污染。我们的数据表明，热带贻贝的凋亡指数可能是沿海生态系统环境压力的有用指标。然而，在污染环境中卵泡凋亡的生态相关性需要进一步研究。

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