National Centre for Polar and Ocean Research (NCPOR), Ministry of Earth Sciences (MoES), Headland Sada, Vasco-da-Gama, Goa, India403804.
Zootaxa. 2022 Jul 11;5162(5):451-486. doi: 10.11646/zootaxa.5162.5.1.
Deep-sea sponges are an imperative component of benthos. They accumulate the suspended organic matter by filtering large quantities of water and, with their intricate structures, provide the most suitable habitats for various associated organisms. We describe three new cadorhizid sponges from the Central Indian Ridge (CIR), Indian Ocean. The sponges are part of the benthic sledge collection conducted onboard the MGS Sagar in the CIR region. A detailed taxonomic description of two novel species, Asbestopluma (Asbestopluma) indiyansis sp. nov., and Asbestopluma (A.) bharatiyae sp. nov. are provided based on the morphological and molecular (mtCOI and 28S) markers. In addition, another new carnivorous species Chondrocladia sagari sp. nov. is described based on the morphological and mtCOI marker. The systematic and descriptions of new species are discussed based on the structural and phylogenetic analysis. Our study shows that the cladorhizid fauna of the seamounts from the CIR are unique and represent regionally endemic benthic habitats.
深海海绵是底栖生物的重要组成部分。它们通过过滤大量的水来积累悬浮有机物，并且其复杂的结构为各种相关生物提供了最适宜的栖息地。我们描述了印度洋中印度洋中脊（CIR）采集的三种新的偕老同穴海绵。这些海绵是在 CIR 地区的 MGS Sagar 船上进行的底栖雪橇采集的一部分。根据形态学和分子（mtCOI 和 28S）标记，对两种新的奇异物种，Asbestopluma (Asbestopluma) indiyansis sp. nov. 和 Asbestopluma (A.) bharatiyae sp. nov. 进行了详细的分类描述。此外，还根据形态学和 mtCOI 标记描述了另一种新的肉食性物种 Chondrocladia sagari sp. nov.。根据结构和系统发育分析讨论了新物种的系统和描述。我们的研究表明，来自 CIR 的海山偕老同穴海绵动物群是独特的，代表了区域性特有底栖生境。
