Macrofaunal Distribution, Diversity, and Its Ecological Interaction at the Cold Seep Site of Krishna-Godavari Basin, East Coast of India

Sangodkar, Nitisha; Gonsalves, Maria–Judith; Nazareth, Delcy R.

doi:10.1007/s00248-021-01942-1

Cited by 4 publications

(3 citation statements)

References 81 publications

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“…86 A Sorensen similarity index was used to calculate the distances based on the presence/absence of macrofauna from methane seeps in the SCS (i.e., Haima and Site F) together with other vent fields and seeps from the surrounding areas in the Pacific (i.e., Manus Basin and Japan) and the Indian Ocean (i.e., India and Pakistan) . 12,20,25,40,87,88 Each vent and seep site with more than five species was used as an independent site in the analysis. Methane seeps in the Nankai Trough were collated into a single mega-site since all sites in this region were poorly sampled.…”

Section: Community Structurementioning

confidence: 99%

“…Previous vent/seep community studies omitted these poorly identified animal groups as well. 12,87 Nevertheless, species-level identification was applied to the bathymodioline mussels and vesicomyid clams for most sites (including the seeps off India and Pakistan) based on their available COI barcodes in GenBank. 67 For comparative purposes, macrofauna from the seep off India were reidentified based on morphological features from available photos.…”

Section: Community Structurementioning

confidence: 99%

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Same (sea) bed different dreams: Biological community structure of the Haima seep reveals distinct biogeographic affinities

He,

Xu,

Chen

et al. 2023

TIG

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<p>Deep-sea chemosynthetic communities, including hydrothermal vents and cold seeps, harbour hundreds of endemic species currently threatened by deep-sea mining and hydrocarbon extraction. The South China Sea (SCS), a semi-enclosed marginal sea with two well-investigated active seeps (Haima in the west and Site F in the east), provides an opportunity to understand the biogeography of chemosynthetic ecosystems. Here, we conducted extensive field surveys using Remotely Operated Vehicles (ROVs) and collected specimens for morphological observations, molecular barcoding, phylogenetic analysis, and stable isotope analysis. Cluster analyses were applied to reveal the community structure of vents and seeps in the Western Pacific and Northern Indian Ocean. A total of 65 species covering seven phyla and 14 classes have been identified from Haima, doubling the number of species reported previously. Among them, 35 species are currently known only from Haima. Stable isotope analysis shows a typical chemosynthesis-based biological community. Community structure analysis at the genus level clustered Haima with Site F, though the species compositions and dominance of two seeps are fairly distinct. Between the two active seeps in the SCS, the higher species richness and endemism at Haima are potentially due to multiple factors, including the unique environmental factors there and the geographic isolation in the northwestern corner of the SCS. Moreover, a similarity in community compositions at the genus level between seeps in the SCS and North Indian Ocean was revealed, potentially mediated by the Early Pliocene opening of the Indonesian islands and the strong westward Indonesia Throughflow. Given the ongoing gas hydrate exploration activities in the SCS, our results will contribute to establishing a global network of marine protected areas for chemosynthetic-based ecosystems. The rich and endemic biodiversity at Haima calls for policymakers to formulate regulations to conserve the unique biodiversity there.</p>

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Section: Community Structurementioning

confidence: 99%

Section: Community Structurementioning

confidence: 99%

Same (sea) bed different dreams: Biological community structure of the Haima seep reveals distinct biogeographic affinities

He,

Xu,

Chen

et al. 2023

TIG

View full text Add to dashboard Cite

show abstract

“…Such ecosystems share some common features, for example, the occurrence of bivalves in the families Solemyidae (e.g., genus Acharax ), Vesicomyidae (e.g., genus Calyptogena and Vesicomya ), and Mytilidae (e.g., genus Bathymodiolus ), and specialized polychaetes belonging to the family Siboglinidae (e.g., genus Lamellibrachia, Escarpia , and Alaysia ), with Siboglinidae, sponges, and gastropods that are sometimes abundant [ 35 , 39 , 40 , 41 , 42 , 43 ]. Recently, cold seeps in the Krishna Godavari Basin (East Coast of India) have been demonstrated to also host Gastropoda, Malacostraca, and few species of Echinoidea, Ophiuroidea, and Echiura [ 44 ].…”

Section: Extreme Marine Environments and Their Benthic Faunamentioning

confidence: 99%

Bacteria Associated with Benthic Invertebrates from Extreme Marine Environments: Promising but Underexplored Sources of Biotechnologically Relevant Molecules

Giudice

Rizzo

2022

Marine Drugs

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Microbe–invertebrate associations, commonly occurring in nature, play a fundamental role in the life of symbionts, even in hostile habitats, assuming a key importance for both ecological and evolutionary studies and relevance in biotechnology. Extreme environments have emerged as a new frontier in natural product chemistry in the search for novel chemotypes of microbial origin with significant biological activities. However, to date, the main focus has been microbes from sediment and seawater, whereas those associated with biota have received significantly less attention. This review has been therefore conceived to summarize the main information on invertebrate–bacteria associations that are established in extreme marine environments. After a brief overview of currently known extreme marine environments and their main characteristics, a report on the associations between extremophilic microorganisms and macrobenthic organisms in such hostile habitats is provided. The second part of the review deals with biotechnologically relevant bioactive molecules involved in establishing and maintaining symbiotic associations.

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First Record of Galatheid Squat Lobster, Shinkaia crosnieri Baba & Williams, 1998 (Decapoda: Galatheoidea) From Cold-seep Environment of the Indian Ocean

et al. 2022

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Macrofaunal Distribution, Diversity, and Its Ecological Interaction at the Cold Seep Site of Krishna-Godavari Basin, East Coast of India

Cited by 4 publications

References 81 publications

Same (sea) bed different dreams: Biological community structure of the Haima seep reveals distinct biogeographic affinities

Same (sea) bed different dreams: Biological community structure of the Haima seep reveals distinct biogeographic affinities

Bacteria Associated with Benthic Invertebrates from Extreme Marine Environments: Promising but Underexplored Sources of Biotechnologically Relevant Molecules

First Record of Galatheid Squat Lobster, Shinkaia crosnieri Baba & Williams, 1998 (Decapoda: Galatheoidea) From Cold-seep Environment of the Indian Ocean

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