Departamento de Ciências do Mar, Universidade Federal de São Paulo (UNIFESP), Rua Carvalho de Mendonça 144, CEP 11070-100 Santos, Brazil.
Departamento de Ciências do Mar, Universidade Federal de São Paulo (UNIFESP), Rua Carvalho de Mendonça 144, CEP 11070-100 Santos, Brazil.
Mar Pollut Bull. 2020 Jun;155:111180. doi: 10.1016/j.marpolbul.2020.111180. Epub 2020 Apr 25.
Mollusk shells can provide important information regarding environmental parameters. It is known that shell morphology is affected by both natural and anthropogenic factors. However, few studies have investigated alterations in shell morphology over a historical perspective and considering chemical contamination and climate changes. The present study assessed shell form (shape and size) variations of limpet (Lottia subrugosa) shells sampled from 1950 to 1981 (past) in comparison with organisms obtained in 2018 (present). Differences between shells from the past and present (2018) were detected, being shell weight and height the two most important affected parameters. The differences observed were attributed to the possible increase in contamination over the years due to human population growth and to climate change. Additionally, when shells from the past were evaluated according to the decade they were sampled, results indicate that it was necessary an interval of 40 years to shell form be altered within populations.
贝类外壳可以提供有关环境参数的重要信息。已知外壳形态受到自然和人为因素的影响。然而，很少有研究从历史角度研究外壳形态的变化，并考虑化学污染和气候变化。本研究评估了 1950 年至 1981 年（过去）采集的石鳖（Lottia subrugosa）贝壳的贝壳形状（形状和大小）变化，并与 2018 年（现在）获得的生物体进行了比较。过去（2018 年）和现在的贝壳之间存在差异，贝壳重量和高度是受影响的两个最重要参数。观察到的差异归因于由于人口增长和气候变化，多年来污染可能增加。此外，当根据采样的十年评估过去的贝壳时，结果表明需要 40 年的时间才能改变种群内的贝壳形态。
