A new species of Ophryotrocha (Annelida, Eunicida, Dorvilleidae) from hydrothermal vents on the Southwest Indian Ridge

This is the first record of the genus Sericosura from the “Duanqiao” hydrothermal field on the Southwestern Indian Ridge. Collected material included two juvenile specimens temporarily assigned to S. bamberi and S. heteroscela respectively, and one male specimen with dimorphic legs here proposed as a new species, S. duanqiaoensis sp. nov. The discovery suggests potential connectivity among the hydrothermal vents of the Atlantic, Indian and Southern Oceans, expecting obtaining more specimens for further evolutionary studies to clarify the relationships of these hydrothermal vents.

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A new species of Mirocaris (Crustacea: Decapoda: Caridea: Alvinocarididae) associated with hydrothermal vents on the Central Indian Ridge, Indian Ocean

Scientia Marina ◽

10.3989/scimar.2006.70n1109 ◽

2006 ◽

Vol 70 (1) ◽

pp. 109-119 ◽

Cited By ~ 12

Author(s):

Tomoyuki Komai ◽

Joel W. Martin ◽

Krista Zala ◽

Shinji Tsuchida ◽

Jun Hashimoto

Keyword(s):

New Species ◽

Indian Ocean ◽

Hydrothermal Vents ◽

Central Indian Ridge ◽

Indian Ridge ◽

A New Species

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A new species of Austrodecus Hodgson, 1907 (Arthropoda, Pycnogonida, Austrodecidae) from the Southwest Indian Ridge

ZooKeys ◽

10.3897/zookeys.349.6170 ◽

2013 ◽

Vol 349 ◽

pp. 73-79 ◽

Cited By ~ 1

Author(s):

Rongcheng Lin ◽

Jianjia Wang ◽

Dingyong Huang ◽

Xin-Qing Zheng

Keyword(s):

New Species ◽

Southwest Indian Ridge ◽

Indian Ridge ◽

A New Species

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A new species of the genus Smacigastes Ivanenko & Defaye, 2004 (Tegastidae, Harpacticoida, Copepoda) from the Onnuri Vent Field in the Indian Ocean

Zoosystematics and Evolution ◽

10.3897/zse.96.54507 ◽

2020 ◽

Vol 96 (2) ◽

pp. 699-714

Author(s):

Jong Guk Kim ◽

Jimin Lee

Keyword(s):

New Species ◽

Indian Ocean ◽

Hydrothermal Vent ◽

Hydrothermal Vents ◽

First Record ◽

Cold Seeps ◽

Dichotomous Key ◽

The Family ◽

The Indian Ocean ◽

A New Species

The genus Smacigastes Ivanenko & Defaye, 2004 (Harpacticoida, Copepoda) is the most primitive genus in the family Tegastidae Sars, 1904, occurring in deep-sea chemosynthetic environments, such as hydrothermal vents, cold seeps, whale falls and wood falls. Our exploration of the Onnuri Vent Field, the sixth active hydrothermal vent system in the Central Indian Ridge, resulted in the discovery of a new species in the genus Smacigastes. A detailed morphological analysis of S. pumilasp. nov. reveals that it most resembles S. barti Gollner, Ivanenko & Martínez Arbizu, 2008, described from a hydrothermal vent in the East Pacific Ridge; the new species can be distinguished from the existing species by the 8-segmented female antennule, the absence of an abexopodal seta on the antennary basis, the mandibular exopod represented by a single seta and the exopod of the first leg with five setae. This is the first record of Smacigastes in the Indian Ocean. A dichotomous key to species of the genus Smacigastes worldwide is provided.

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A new squat lobster species of the genus Munida Leach, 1820 (Crustacea: Anomura: Galatheoidea: Munididae) from hydrothermal vents on the Eastern Pacific Rise

Zootaxa ◽

10.11646/zootaxa.4743.1.12 ◽

2020 ◽

Vol 4743 (1) ◽

pp. 131-136 ◽

Cited By ~ 1

Author(s):

XINMING LIU ◽

XINZHENG LI ◽

RONGCHENG LIN

Keyword(s):

New Species ◽

Deep Sea ◽

Hydrothermal Vent ◽

Hydrothermal Vents ◽

Eastern Pacific ◽

Single Specimen ◽

Squat Lobster ◽

The Third ◽

A New Species

A new species of the genus Munida Leach, 1820, is described and illustrated based on a single specimen from the deep-sea hydrothermal vent on the Eastern Pacific Rise. Munida alba sp. nov. closely resembles M. ampliantennulata Komai, 2011, M. watatsumin Komai, 2014. and M. magniantennulata, but differences in the morphologies of the third maxilliped, pollex of the cheliped and the third segment of the antennal peduncle readily distinguish the new species from the three relatives. The new species is the fourth of the genus occurring at the hydrothermal vent areas.

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Trophodynamics at the Longqi hydrothermal vent field and comparison with the East Scotia and Central Indian Ridges

Marine Biology ◽

10.1007/s00227-020-03755-1 ◽

2020 ◽

Vol 167 (10) ◽

Author(s):

W. D. K. Reid ◽

B. D. Wigham ◽

L. Marsh ◽

J. N. J. Weston ◽

Y. Zhu ◽

...

Keyword(s):

Stable Isotope ◽

Hydrothermal Vent ◽

Hydrothermal Vents ◽

Trophic Ecology ◽

Tricarboxylic Acid Cycle ◽

Isotope Analysis ◽

Southwest Indian Ridge ◽

Food Sources ◽

Model Based Clustering ◽

Indian Ridge

Abstract The Longqi vent field, situated on the Southwest Indian Ridge, is ecologically distinct among known hydrothermal vents fields. It hosts a combination of previously unknown species and those shared at species or genus level with other hydrothermal vents on the Central Indian Ridge (CIR) and East Scotia Ridge (ESR). We investigate the size-based and trophodynamics of consumers at Longqi vent field and compared these with ESR and CIR vent fields using stable isotope analysis. Intra-specific variability in δ13C and δ15N values in relationship to shell length was observed in Gigantopelta aegis but absent in Chrysomallon squamiferum. A model-based clustering approach identified four trophic groupings at Longqi: species with the lowest δ13C values being supported by carbon fixed via the Calvin–Benson–Bassham cycle, the highest δ13C values being supported by the reductive tricarboxylic acid cycle and intermediate values potentially supported by a mix of these primary production sources. These clusters were driven by potential differences in resource partitioning. There were also differences in the spread of stable isotope values at the vent field level when comparing Bayesian stable isotope ellipse areas among Longqi, CIR and ESR vent fields. This was driven by a combination of the range in δ13C value of macrofauna, and the negative δ15N values which were only observed at Longqi and CIR vent fields. Many of the shared species or genera showed inter-vent field differences in stable isotope values which may be related to site-specific differences in food sources, geochemistry or potential intra-field competition. This study provides important information on the trophic ecology of hydrothermal vent macrofauna found within an area of seabed that is licensed for seabed mining exploration.

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A new species of vent associated Munidopsis (Crustacea: Decapoda: Anomura: Galatheidae) from the Western Pacific, with notes on its genetic identification

Zootaxa ◽

10.11646/zootaxa.1435.1.3 ◽

2007 ◽

Vol 1435 (1) ◽

pp. 25 ◽

Cited By ~ 7

Author(s):

SHINJI TSUCHIDA ◽

MICHEL E. HENDRICKX ◽

RYUSUKE KADO ◽

SEIICHI WATANABE

Keyword(s):

New Species ◽

Hydrothermal Vents ◽

The Body ◽

Western Pacific ◽

Genetic Identification ◽

Mitochondrial Sequences ◽

The Western Pacific ◽

A New Species

Munidopsis myojinensis n. sp., herein described and illustrated from Myojin Knoll and Northwest Eifuku Seamount in the Western Pacific, is the tenth species of Munidopsis known to be associated with active hydrothermal vents. It resembles M. starmer Baba & de Saint Laurent, 1992 in general ornamentation and spination of the body but differs in the erectness of the eyespine and form of the telson plates. Information on genetic identification using mitochondrial sequences (COI) is provided. Distributions of the vent associated Munidopsis in the Western Pacific and the habitat of the new species are briefly described.

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A new species and phylogenetic insights in Hesiospina (Annelida, Hesionidae)

Zootaxa ◽

10.11646/zootaxa.4441.1.3 ◽

2018 ◽

Vol 4441 (1) ◽

pp. 59 ◽

Cited By ~ 3

Author(s):

PAULO BONIFÁCIO ◽

YANN LELIÈVRE ◽

EMMANUELLE OMNES

Keyword(s):

New Species ◽

Deep Sea ◽

Hydrothermal Vents ◽

Juan De Fuca Ridge ◽

Cold Seeps ◽

Molecular Analyses ◽

The Third ◽

Juan De Fuca ◽

Ne Pacific ◽

A New Species

Hesionids are a very speciose group of polychaetes. In the deep sea, they occur in different environments such as hydrothermal vents, cold seeps, abyssal depths or whale falls. In the present study, a new species of Hesionidae, Hesiospina legendrei sp. nov. has been identified based on morphological and molecular (16S and COI genes) data from hydrothermal vents located in Juan de Fuca Ridge (NE Pacific Ocean). This new species is characterized by trapezoid prostomium; proboscis with high number of distal papillae (20–27), a pair of sac-like structures inserted ventro-laterally in proboscis; notopodia lobe reduced with multiple, slender aciculae on segments 1–5; and neuropodia developed with single, simple chaeta, and numerous, heterogomph falcigers, with 1–2 inferiormost having elongated hood. Hesiospina legendrei sp. nov. is the third described species in the genus. Sequences from the two previously described Hesiospina species are included in the molecular analyses, and although the genes used in this study are not sufficient to resolve the relationships on genus level, the result raises questions about the cosmopolitan aspect of H. vestimentifera.

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Levensteiniella manusensis sp. nov., a new polychaete species (Annelida: Polynoidae) from deep-sea hydrothermal vents in the Manus Back-Arc Basin, Western Pacific

Zootaxa ◽

10.11646/zootaxa.4388.1.7 ◽

2018 ◽

Vol 4388 (1) ◽

pp. 102 ◽

Cited By ~ 1

Author(s):

XUWEN WU ◽

KUIDONG XU

Keyword(s):

New Species ◽

Deep Sea ◽

Hydrothermal Vents ◽

Western Pacific ◽

Posterior Border ◽

Polychaete Species ◽

Males And Females ◽

Back Arc ◽

A New Species

A new species belonging to the subfamily Macellicephalinae (Annelida: Polynoidae), Levensteiniella manusensis sp. nov., is described based on material collected from deep-sea hydrothermal vents in the Manus Back-Arc Basin. The new species is readily distinguished from the congeners by having two pairs of ventral papillae on segments 11 and 12, the first pair of which is distally dichotomous. Levensteiniella manusensis is also characterized by the combination of the notochaetae which are smooth or serrated on the curved side, and the elytra with micro- and macropapillae on the surface and thickened bulbous projections on the posterior border. Based on morphological comparisons of the main features, we provide two keys to six species of Levensteiniella described to date based on males and females respectively.

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