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首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >Biodiversity patterns of epibiotic invertebrates occupying an edible polyplacophoran across a latitudinal gradient of the Mexican Pacific
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Biodiversity patterns of epibiotic invertebrates occupying an edible polyplacophoran across a latitudinal gradient of the Mexican Pacific

机译：Epibiotic无脊椎动物的生物多样性模式占据墨西哥太平洋纬度梯度的可食用的多普利特

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摘要

The broad perspective regarding marine-organisms biodiversity indicates a latitudinal gradient. Understanding gradients in diversity at large scales has important applications for understanding future impacts on local and regional communities. We use and propose the edible mollusk Chiton articulatus as the basibiont proxy to analyze the spatio-temporal changes in biodiversity patterns of the epibiotic community occupying its scleritome surface. The analyses covered approximately 1817 km of the Mexican Pacific, using seven sites that included samples from Sinaloa "SIN" (23 degrees 38'N, 106 degrees 48'W); Nayarit "NAY" (20 degrees 45'N, 105 degrees 22' W); Jalisco "JAL" (19 degrees 13'N, 104 degrees 41'W); Colima "COL" (19 degrees 06' N, 104 degrees 20'W); Michoacan "MIC" (17 degrees 54' N, 102 degrees 11'"W); Guerrero "GRO" (16 degrees 48' N, 99 degrees 52'W) and Oaxaca "OAX" (15 degrees 39' N, 96 degrees 30'W). A temporal gradient (monthly sampling from October 2015 to October 2016) was also analyzed. Evaluation of the sampling effort demonstrated that 76-86% of the epibiotic fauna was recovered. The most representative epibionts were barnacles, a limpet and an acrothoracican. Abundances of the barnacles and the limpet tended to decrease southwards, while the acrothoracican tended to increase northwards. The epibiotic community did not exhibit the typical latitudinal gradient of diversity expected, but a fragmented pattern within three main areas, which coincide with three of the marine biogeographic ecoregions proposed for the shallow waters of the Warm Temperate Northern Pacific and Tropical Eastern Pacific provinces. These were a northern group within SIN, which belong to the southern border of the Magdalena Transition ecoregion (subtropical); a middle group within NAY, JAL, COL, MIC, and GRO, which belongs to the Mexican Tropical Pacific ecoregion (tropical); and a southern group within OAX exclusively, belonging to the northern border of the Chiapas-Nicaragua ecoregion (tropical). The southern localities showed larger dominances and the central localities exhibited more stable communities. Our evidence suggests that as we move across the different shore types of the Mexican Pacific, the coastline supports distinct biotic assemblages, and the community on the rocky shores is biologically heterogeneous and mainly influenced by conditions at the local level. In consequence, conservation and protection efforts should consider preserving the local heterogeneity of habitats in the study area. Furthermore, since C. articulatus is edible, its epibiota represents an incidental fishing bycatch, with the result that the extraction of the chiton and its epibiota can jeopardy the diversity in the intertidal rocky shore of the Mexican Pacific.
机译：关于海洋生物体生物多样性的广泛观点表明了纬度梯度。了解大尺度多样性的梯度具有了解对地方和区域社区的未来影响的重要应用。我们使用并提出可食用的软体动物Chiton Articulatus作为贱民代理，分析占据其硬化组表面的癫痫群体的生物多样性模式的时空变化。分析覆盖了墨西哥太平洋约1817公里，使用了来自Sinaloa“Sin”的样本（23度38'n，106度48'w）的七个地点; Nayarit“Nay”（20度45'n，105度22'W）; Jalisco“jal”（19度13'n，104度41'w）; Colima“Col”（19度06'，104度20'）; Michoacan“麦克风”（17度54'，102度11'“w）; Guerrero”gro“（16度48'n，99度52'w）和oaxaca”oax“（15℃39'，96度30'W）。还分析了时间梯度（2015年10月至2016年10月的每月抽样）。评估采样措施的表明，76-86％的癫痫菌恢复了。最具代表性的诱惑是藤壶，一个爵士队一个植绒植物。藤内的丰富和帽子倾向于向南减少，而植绒植物倾向于向北增加。癫痫群落未展现出预期的多样性典型的纬度梯度，但三个主要区域的碎片模式，这与三个主要区域在北太平洋北部和热带东太平洋省浅水中提出的海洋生物地理eCoregions。这些是罪恶中的北部集团，属于马格达利娜转型eCOREGION的南部边界（SU包心; NAY，JAL，COL，MIC和GAG中的中间组，属于墨西哥热带太平洋生态（热带）;和南部小组在oax内，属于恰帕斯 - 尼加拉瓜eCoregion（热带）的北部边界。南部地区展示了更大的优势，中央地区展出了更稳定的社区。我们的证据表明，随着我们跨越墨西哥太平洋的不同岸边类型，海岸线支持不同的生物组合，而岩石海岸的社区是生物学的异质，主要受到地方一级条件的影响。因此，保护​​和保护努力应考虑维护研究区栖息地的局部异质性。此外，由于C. Articulatus是可食用的，其Epibiota代表了偶然捕鱼的兼容，结果表明，窒息和其表皮病的提取能够危害墨西哥太平洋的思维岩石岸边的多样性。

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