PDF(Pubmed)
Abstract：
UNASSIGNED: In recent decades, Caribbean coral reefs have lost many vital marine species due to diseases. The well-documented mass mortality event of the long-spined black sea urchin Diadema antillarum in the early 1980s stands out among these collapses. This die-off killed over 90% of D. antillarum changing the reefscape from coral to algal-dominated. Nearly 40 years later, D. antillarum populations have yet to recover. In early 2022, a new mortality event of D. antillarum was reported along the Caribbean, including Puerto Rico.
UNASSIGNED: This study identifies the gut microbiota changes associated with the D. antillarum during this mortality event. It contrasts them with the bacterial composition of gut samples from healthy individuals collected in 2019 by using 16S rRNA sequencing analyses.
UNASSIGNED: Notably, the die-off group\'s core microbiome resembled bacteria commonly found in the human skin and gut, suggesting potential anthropogenic contamination and wastewater pollution as contributing factors to the 2022 dysbiosis. The animals collected in 2022, especially those with signs of disease, lacked keystone taxa normally found in Diadema including Photobacterium and Propionigenium.
UNASSIGNED: The association between human microbes and disease stages in the long-spined urchin D. antillarum, especially in relation to anthropogenic contamination, highlights a complex interplay between environmental stressors and marine health. While these microbes might not be the direct cause of death in this species of sea urchins, their presence and proliferation can indicate underlying issues, such as immune depletion due to pollution, habitat destruction, or climate change, that ultimately compromise the health of these marine organisms.
UNASSIGNED: This study identifies the gut microbiota changes associated with the D. antillarum during this mortality event. It contrasts them with the bacterial composition of gut samples from healthy individuals collected in 2019 by using 16S rRNA sequencing analyses.
UNASSIGNED: Notably, the die-off group\'s core microbiome resembled bacteria commonly found in the human skin and gut, suggesting potential anthropogenic contamination and wastewater pollution as contributing factors to the 2022 dysbiosis. The animals collected in 2022, especially those with signs of disease, lacked keystone taxa normally found in Diadema including Photobacterium and Propionigenium.
UNASSIGNED: The association between human microbes and disease stages in the long-spined urchin D. antillarum, especially in relation to anthropogenic contamination, highlights a complex interplay between environmental stressors and marine health. While these microbes might not be the direct cause of death in this species of sea urchins, their presence and proliferation can indicate underlying issues, such as immune depletion due to pollution, habitat destruction, or climate change, that ultimately compromise the health of these marine organisms.
摘要：
■近几十年来，由于疾病，加勒比珊瑚礁已经失去了许多重要的海洋物种。1980年代初期，长期旋转的黑海胆Diademaantillarum的大量死亡事件在这些塌陷中脱颖而出。这种死亡杀死了90％以上的安提拉木虫，将景观从珊瑚转变为藻类为主。将近40年后,D.Antillarum种群尚未恢复。2022年初，加勒比海地区报告了新的安提拉氏菌死亡事件，包括波多黎各.
■本研究确定了在此死亡事件期间与安提菌相关的肠道微生物群变化。通过使用16SrRNA测序分析，将它们与2019年收集的健康个体肠道样本的细菌组成进行了对比。
■值得注意的是，死亡组的核心微生物组类似于人类皮肤和肠道中常见的细菌，表明潜在的人为污染和废水污染是2022年生态失调的促成因素。2022年收集的动物，特别是那些有疾病迹象的动物，缺乏通常在Diadema中发现的梯形分类群，包括光细菌和丙啶菌。
■人类微生物与长旋海胆D.antillarum疾病阶段之间的关联，特别是在人为污染方面，强调了环境压力源和海洋健康之间复杂的相互作用。虽然这些微生物可能不是这种海胆的直接死亡原因，它们的存在和扩散可能表明潜在的问题，例如由于污染导致的免疫消耗，栖息地的破坏,或者气候变化，最终危及这些海洋生物的健康。
■本研究确定了在此死亡事件期间与安提菌相关的肠道微生物群变化。通过使用16SrRNA测序分析，将它们与2019年收集的健康个体肠道样本的细菌组成进行了对比。
■值得注意的是，死亡组的核心微生物组类似于人类皮肤和肠道中常见的细菌，表明潜在的人为污染和废水污染是2022年生态失调的促成因素。2022年收集的动物，特别是那些有疾病迹象的动物，缺乏通常在Diadema中发现的梯形分类群，包括光细菌和丙啶菌。
■人类微生物与长旋海胆D.antillarum疾病阶段之间的关联，特别是在人为污染方面，强调了环境压力源和海洋健康之间复杂的相互作用。虽然这些微生物可能不是这种海胆的直接死亡原因，它们的存在和扩散可能表明潜在的问题，例如由于污染导致的免疫消耗，栖息地的破坏,或者气候变化，最终危及这些海洋生物的健康。
