eDNA metabarcoding survey of tropical northwestern Australia, Indian Ocean (2017-2018)

An eDNA metabarcoding survey of tropical northwestern Australia, Indian Ocean (2017-2018) collected 284 surface seawater samples from 71 mid-shelf, inshore, coastal and nearshore estuarine sites over 700 km of the northwestern Australian coastline. The metabarcoding assays targeting the mitochondrial 16S rRNA and CO1 genes which resulted in the detection of a wide range of bony fish (404 taxa), elasmobranchs (44) and aquatic reptiles (5). Inshore bony fish and elasmobranch communities, as well as coastal bony fish assemblages, were found to differ between the South and North Kimberley regions suggesting previously unrecognized subregional differentiation amongst these taxa. The overall compositional data have been used to update distribution information for a number of endangered, elusive and data-deficient taxa, including sawfish (family: Pristidae), northern river shark (Glyphis garricki) and wedgefish (genus: Rhynchobatus). Data accessed on 2022-03-14 from the linked Dryad Digital Repository referenced in the cited paper.

2017-2018年针对印度洋热带澳大利亚西北部海域开展的一项环境DNA宏条形码（eDNA metabarcoding）调查，在澳大利亚西北部700公里海岸线范围内的71个中陆架、近岸、沿海及近岸河口点位采集了284份表层海水样本。本次研究采用靶向线粒体16S rRNA与CO1基因的宏条形码检测方案，共检出涵盖硬骨鱼（404个分类单元）、软骨鱼（44个分类单元）及水生爬行动物（5个分类单元）在内的多样类群。研究发现，近岸硬骨鱼与软骨鱼群落，以及沿海硬骨鱼类群组合在南金伯利与北金伯利区域间存在显著差异，表明这些类群中存在此前未被认知的亚区域分化格局。本研究的整体群落组成数据已被用于更新多个濒危、隐秘难寻且数据匮乏的类群的分布信息，包括锯鳐科（Pristidae）物种、北河鲨（Glyphis garricki）及犁头鳐属（Rhynchobatus）物种。本数据集于2022年3月14日从引用文献中提及的关联Dryad数字知识库（Dryad Digital Repository）获取。