Hydrothermal vent fauna of the Galápagos Rift: Updated species list with new records DOI Open Access
Chong Chen, John W. Jamieson, Verena Tunnicliffe

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2023, Volume and Issue: unknown

Published: Nov. 29, 2023

Abstract The sighting of giant bivalves and tubeworms at the Rose Garden vent field on Galápagos Rift in 1977 marked discovery hydrothermal vents, a turning point for modern biology. following decade saw flurry taxonomic descriptions endemic species from first vents. With finding high-temperature ‘black smokers’ East Pacific Rise, exploration shifted away Galápagos. A faunal list vents with 65 was published 1991, then updated to 74 2006. Since then, few expeditions returned Rift. Here, we revisited several including recently confirmed sites inactive sulfide mounds. From our collecting efforts observations, as well revisions literature, update 92 15 new records, restricted obvious associates. Accurate regional lists are important understanding biogeography fauna, will also be valuable setting management strategies.

Language: Английский

Same (sea) bed different dreams: Biological community structure of the Haima seep reveals distinct biogeographic affinities DOI Creative Commons
Xing He, Ting Xu, Chong Chen

et al.

The Innovation Geoscience, Journal Year: 2023, Volume and Issue: 1(2), P. 100019 - 100019

Published: Jan. 1, 2023

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

Language: Английский

Citations

25
Hydrothermal vent fauna of the western Pacific Ocean: Distribution patterns and biogeographic networks DOI Creative Commons
Verena Tunnicliffe, Chong Chen, Thomas Giguère

et al.

Diversity and Distributions, Journal Year: 2023, Volume and Issue: 30(2)

Published: Nov. 29, 2023

Abstract Aim Deep‐sea hydrothermal vent habitats support a low‐diversity fauna in which most species are unique to the ecosystem. To inform conservation planning around this vulnerable marine ecosystem, we examine distributions over wide area assess underlying beta‐diversity components and biogeographic patterns. We concept of highly connected that would repopulate areas local extinction from distal locations. Location Western Pacific Ocean Japan New Zealand. Methods assemble database 295 confirmed records for 11 western systems. The SET framework supports query distribution pairwise pattern comparisons among build network based graph theory connectivity systems on shared similarity. A bipartite revealed relative role each linkages system nodes. importance sampling bias distance between Results Overall, two‐thirds taxa restricted single basin or arc. Mariana Trough has highest corrected weighted endemism vent‐specific species, followed by Okinawa Trough. Species replacement is dominant feature beta‐diversity. Eleven form seven modules with stronger Southwest than Northwest Pacific. Manus Basin emerges as ‘hub’ reflecting its central geographic near equator. Main Conclusion Two provinces arise, north south equator few transcend. Local regional plans should consider low high management ecosystems event seabed mining. recruitment unlikely transcend boundaries. identify Trough, Basin, Feni‐Tabar Arc Kermadec development initiate expand protection.

Language: Английский

Citations

15
Species assemblage networks identify regional connectivity pathways among hydrothermal vents in the Northwest Pacific DOI Creative Commons
Otis Brunner, Chong Chen, Thomas Giguère

et al.

Ecology and Evolution, Journal Year: 2022, Volume and Issue: 12(12)

Published: Dec. 1, 2022

The distribution of species among spatially isolated habitat patches supports regional biodiversity and stability, so understanding the underlying processes structure is a key target conservation. Although multivariate statistics can infer connectivity driving distribution, such as dispersal suitability, they rarely explore structure. Methods from graph theory, applied to data, give insights into both pathways by intuitively formatting data network patches. We apply these methods empirical hydrothermal vent habitats Northwest Pacific. Hydrothermal vents are "oases" biological productivity endemicity on seafloor that imminently threatened anthropogenic disturbances with unknown consequences biodiversity. Here, we describe assemblage networks at vents, how local parameters affect their structure, implications for Two complementary were formed an extensive dataset: similarity site nodes linked weighted edges based pairwise bipartite which present. Using networks, assessed role individual sites in maintaining identified biogeographic sub-regions. three sub-regions two outlying separated spatial arrangement environmental filters. Both detected play disproportionately important pathways, while also distinct assemblages These provide historical colonization routes, sub-regional value when selecting conservation and/or estimating multivent impacts proposed deep-sea mining.

Language: Английский

Citations

21
Revision of the alvinocaridid shrimp genus Rimicaris Williams & Rona, 1986 (Decapoda: Caridea) with description of a new species from the Mariana Arc hydrothermal vents DOI
Pierre Methou, Chong Chen, Tomoyuki Komai

et al.

Zootaxa, Journal Year: 2024, Volume and Issue: 5406(4), P. 501 - 518

Published: Feb. 7, 2024

A new species of alvinocaridid shrimp is reported, from the Northwest Eifuku hydrothermal vent field at 16191667 m depth on Mariana Arc. comprehensive phylogenetic reconstruction Alvinocarididae based mitochondrial cytochrome c oxidase subunit I (COI) gene including this reveals paraphyly genus Rimicaris Williams & Rona, 1986 with four other generaAlvinocaridinides, Manuscaris, Opaepele, and Shinkaicarisnested within it. We re-examine material these problematic genera, synonymise them under whose diagnosis has been amended, in order to maintain a monophyletic Rimicaris. Our species, cambonae sp. nov. genetically close loihi (Williams Dobbs, 1995) comb. (previously Opaepele loihi) which it co-occurs, but can be morphologically distinguished by less elevated dorsal surface rostrum, being devoid median carina, stronger pterygostomial tooth carapace, blunt rather than acuminate proximolateral process antennular stylocerite. Species previously assigned above listed, synonymized genera are also discussed, examined for three key species: R. loihi, acuminata, leurokolos. Further, Alvinocaridinides formosa Komai Chan, 2010 Manuscaris liui Wang Sha, 2016 leurokolos (Kikuchi Hashimoto, 2000) acuminata (Komai Tsuchida, 2015) nov., respectively. Revised diagnoses presented After present revision revision, now consists 15 species.

Language: Английский

Citations

4
Integrative morphological, mitogenomic and phylogenetic analyses reveal new vent-dwelling scallop species DOI
Yi‐Tao Lin, Yuxin Peng, Chong Chen

et al.

Invertebrate Systematics, Journal Year: 2025, Volume and Issue: 39(2)

Published: Feb. 10, 2025

Delectopecten is a small genus of the family Pectinidae (Bivalvia: Pectinida) that remains poorly studied in terms both morphology and phylogeny. Here, we describe first member this from deep-sea hydrothermal vent ecosystems, D. thermus sp. nov., based on morphological investigations molecular analyses specimen collected Higashi–Ensei field (962-m depth) northern Okinawa Trough. Morphologically, new species resembles vancouverensis gelatinosus shell size, shape, auricle size sculpture. However, nov. can be distinguished its congeneric (including 9 extant 12 fossil species) by unequal auricles (the anterior one being larger than posterior), inwardly recurved left valve large byssal notch angle ~90°. Comparisons genetic sequences three mitochondrial nuclear gene fragments supported placement Delectopecten. Further phylogenetic using these markers support monophyletic positioned as an early diverging clade Pectinidae. Additionally, mitogenome was assembled annotated, for – revealing significant divergences order compared to other pectinids. The 16S rRNA amplicon analysis gill tissue indicated vent-dwelling scallop does not exhibit symbiosis with chemosynthetic bacteria. A key all known provided aid identification understudied genus. ZooBank: urn:lsid:zoobank.org:pub:D3D5D4AD-EE39-49F0-9782-12A5D6752A67

Language: Английский

Citations

0
Association patterns between farmland abandonment and the non-native Common Waxbill (Estrilda astrild) in the eastern Iberian Peninsula DOI Creative Commons
Pau Lucio-Puig, Rafael Muñoz‐Mas, Virginia Garófano-Goméz

et al.

Journal of Ornithology, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 18, 2025

Language: Английский

Citations

0
Faunal community of a new hot vent field on the Amami Rift DOI
Chong Chen, Natsumi Hookabe, Hironori Komatsu

et al.

Journal of the Marine Biological Association of the United Kingdom, Journal Year: 2024, Volume and Issue: 104

Published: Jan. 1, 2024

Abstract Deep-sea hydrothermal vents host chemosynthesis-based ecosystems inhabited chiefly by specially adapted animals that do not live anywhere else, and depth has been shown to be a major driver of species composition at around Japan. Though the Ryukyu region in southern Japan is home many hot vents, only two – Minami-Ensei Knoll Yoron Hole have found shallower than 1000 m. Here, we report discovery new vent field on Amami Rift northwest off Ōshima 630 m deep. A total 29 macrofaunal were recorded from Rift, including 19 specialists. Comparison across three shallow revealed shared species, highlighting all display distinct community structure. exhibits zonation patterns generally more similar Hole, but presence key taxa such as sulphide worm Paralvinella mussel ‘ Bathymodiolus ’ platifrons well absence symbiotic squat lobster Shinkaia limpet Lepetodrilus exemplify its difference with Minami-Ensei. Furthermore, non-vent specific predators seen these sites completely different. Overall, can considered unique set fauna, warranting future research mechanisms shaping disparate diversity between nearby The unusual geological setting converging point Okinawa Trough Arc may influence fluid chemistry drive differences.

Language: Английский

Citations

3
Life-history traits of alvinocaridid shrimps inhabiting chemosynthetic ecosystems around Japan DOI
Pierre Methou, Verity Nye, Jon Copley

et al.

Marine Biology, Journal Year: 2023, Volume and Issue: 170(6)

Published: May 11, 2023

Language: Английский

Citations

6
Mitogenome-based phylogeny of the gastropod order Neomphalida points to multiple habitat shifts and a Pacific origin DOI Creative Commons
Lili Zhang, Xinyu Gu, Chong Chen

et al.

Frontiers in Marine Science, Journal Year: 2024, Volume and Issue: 10

Published: Jan. 16, 2024

Neomphalida is an order of gastropod molluscs with highly diverse morphology and a global distribution across various chemosynthesis-based ecosystems from organic falls to hot vents. The phylogenetic relationships taxa within this remain contentious, due the rarity material leading low taxonomic coverage few genetic markers used. includes three families—Melanodrymiidae, Neomphalidae, Peltospiridae—and molecular sequences are especially lacking in Melanodrymiidae. Here, we assembled total 11 mitogenomes covering these families 14 genus-level groups reconstruct most complete phylogeny date. Our current result recovered monophyly maximum support likely interfamilial relationship (Melanodrymiidae + Neomphalidae) Peltospiridae. These indicate possibility habitat shifting non-chemosynthetic deep sea vent then sunken wood, accompanied by elevated mitogenome rearrangements amino acid substitution rates By mapping species on phylogeny, our findings suggest Pacific origin multiple historical dispersal events Peltospiridae Indian Ocean at least once Atlantic.

Language: Английский

Citations

2
Hydrothermal vent fauna of the Galápagos Rift: updated species list with new records DOI Creative Commons
Chong Chen, John W. Jamieson, Verena Tunnicliffe

et al.

Marine Biodiversity, Journal Year: 2024, Volume and Issue: 54(2)

Published: Feb. 15, 2024

The sighting of giant bivalves and tubeworms at the Rose Garden vent field on Galápagos Rift in 1977 marked discovery hydrothermal vents, a turning point for modern biology. following decade saw flurry taxonomic descriptions endemic species from first vents. With finding high-temperature "black smokers" East Pacific Rise, exploration shifted away Galápagos. A faunal list vents with 65 was published 1991, then updated to 74 2006. Since then, few expeditions returned Rift. Here, we revisited several including recently confirmed sites inactive sulfide mounds. From our collecting efforts observations, as well revisions literature, update 92 15 new records, restricted obvious associates. Accurate regional lists are important understanding biogeography fauna, will also be valuable setting management strategies.

Language: Английский

Citations

2