Departamento de Ciências do Mar, Universidade Federal de São Paulo (UNIFESP), Santos, SP, Brazil.
Departamento de Oceanografia, Universidade Federal de Pernambuco (UFPE), Recife, PE, Brazil.
Environ Pollut. 2017 Jul;226:494-503. doi: 10.1016/j.envpol.2017.04.045. Epub 2017 Apr 22.
During the last years, shell alterations in gastropods have been proposed as tools to be used in monitoring programs. However, no studies were so far performed investigating the relationships among shell parameters and classical biomarkers of damage. The relationship between shell alterations (biometrics, shape and elemental composition) and biomarkers (LPO and DNA strand break) was evaluated in the limpet L. subrugosa sampled along a contamination gradient in a multi-impacted coastal zone from southeastern Brazil. Statistically significant differences were detected among sites under different pollution levels. The occurrence of shell malformations was consistent with environmental levels of several hazardous substances reported for the studied area and related to lipid peroxidation and DNA damage. In addition, considering the low mobility, wide geographic distribution, ease of collection and abundance of limpets in coastal zones, this putative tool may be a cost-effective alternative to traditional biomarkers. Thus, shell alterations in limpets seem to be good proxies for assessing biological adverse effects in multi-impacted coastal zones.
在过去的几年中，腹足类动物的壳改变已被提议作为监测计划中使用的工具。然而，到目前为止，还没有研究调查壳参数与经典损伤生物标志物之间的关系。在巴西东南部受多方面影响的沿海地区的污染梯度上采集的石鳖（L. subrugosa）中，评估了壳改变（生物统计学，形状和元素组成）与生物标志物（LPO 和 DNA 链断裂）之间的关系。在不同污染水平的站点之间检测到了统计学上的显著差异。贝壳畸形的发生与为研究区域报告的几种有害物质的环境水平一致，与脂质过氧化和 DNA 损伤有关。此外，考虑到石鳖在沿海地区的低迁移性、广泛的地理分布、易于采集和丰富性，这种推测的工具可能是传统生物标志物的一种具有成本效益的替代方法。因此，石鳖壳的改变似乎是评估多方面影响的沿海地区生物不良影响的良好替代指标。
