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Feeding Habit and Lifestyle Influence the Baseline Micronuclei Frequency of Crab Species in Pristine Mangroves
Wetlands ( IF 2 ) Pub Date : 2021-02-24 , DOI: 10.1007/s13157-021-01427-4
Marcelo Antonio Amaro Pinheiro , Nicholas Kriegler , Caroline Araújo de Souza , Luis Felipe de Almeida Duarte

Metals are harmful inorganic pollutants in aquatic environments when their concentrations are higher than expected (or tolerated) and, in low concentrations, they can lead sublethal genetic injuries. Baseline frequencies of micronucleated cells (MN‰) of three mangrove crab species were established in a pristine mangrove (Juréia-Itatins Ecological Station, JIES). Aratus pisonii, Ucides cordatus and Goniopsis cruentata belong to different functional groups, regarding the diet and lifestyle. Overall, the baseline MN‰ of G. cruentata (1.7 ± 1.2; mean ± sd) was higher than that of A. pisonii (0.9 ± 1.1) and U. cordatus (1.3 ± 0.9). These differences can be explained by the diet (gl, green leaves; sl, senescent leaves; a, animal items; or their combination) and lifestyle of these species, as their degree of contact with abiotic compartments (w, water; s, sediment). Aratus pisonii is an arboreal crab and specialist herbivore, associated with few compartments (w + gl); Ucides cordatus is a digger crab, generalist herbivore, using three compartments (w + s + sl); and Goniopsis cruentata is a cursorial crab, omnivorous, exploring more compartments (w + s + sl + a). Thus, using a broader range of compartments and a more diverse diet were correlated with a higher genotoxicity. Metals in JIES were registered in environmentally safe concentrations but seem to influence the baseline MN‰ in crab species. Higher genotoxicity was registered in species that interact with more compartments (especially the sediment), a fact that should be considered in monitoring processes.



中文翻译:

进食习惯和生活方式影响原始红树林中螃蟹物种的基线微核频率。

当金属的浓度高于预期(或可忍受的浓度)时,它们在水生环境中是有害的无机污染物,而在低浓度时,它们可能导致亚致死性遗传伤害。在原始红树林中建立了三种红树林蟹物种的微核细胞(MN‰)的基线频率(朱尔斯-伊廷斯生态站,JIES)。就饮食和生活方式而言,Aratus pisoniiUcides cordatusGoniopsis cruentata属于不同的功能组。总体而言,基线MN‰ G. cruentata(1.7±1.2;平均值±SD)比的更高A. pisonii(0.9±1.1)和U. cordatus(1.3±0.9)。这些差异可以通过饮食(gl,绿叶; sl,衰老叶; a,动物物品;或它们的组合)和这些物种的生活方式来解释,因为它们与非生物区室(w,水,s,沉积物)的接触程度)。Aratus pisonii是一种树栖蟹和特有的食草动物,很少有隔室(w + gl)。Ucides cordatus是一种普通食草动物的挖蟹,使用三个隔室(w + s + sl);和朱顶兰是只杂食性的游走蟹,探索更多的隔室(w + s + sl + a)。因此,使用更大范围的隔室和更多样化的饮食与更高的遗传毒性相关。JIES中的金属以对环境安全的浓度注册,但似乎会影响螃蟹物种的基线MN‰。与更多区室(尤其是沉积物)相互作用的物种具有较高的遗传毒性,这一事实应在监测过程中予以考虑。

更新日期:2021-02-25
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