A new species of yeti crab, genus Kiwa Macpherson, Jones and Segonzac, 2005 (Decapoda: Anomura: Kiwaidae), from a hydrothermal vent on the Australian-Antarctic Ridge

Lee, Sang Hui; Lee, Won Kyung; Won, Yong Jin

doi:10.1163/1937240x-00002418

Cited by 6 publications

(6 citation statements)

References 11 publications

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“…This study incorporates all known kiwaid anomurans; two more than previously, bringing the total to six. This includes the Pacific-Antarctic Ridge vent-associated Kiwa hirsuta [ 18 ], the seep-associated Kiwa puravida from the Pacific continental slope off Costa Rica [ 19 ], Kiwa tyleri from vents on the East Scotia Ridge [ 23 ] and the recently discovered Kiwa araonae from vents on the Australian-Antarctic Ridge [ 28 ]. Two undescribed species are also included: one collected from vents on the Southwest Indian Ridge, Kiwa sp.…”

Section: Methodsmentioning

confidence: 99%

“…[ 19 ] (CC BY 4.0); B) Kiwa sp. Galapagos Microplate; C) Kiwa araonae [ 28 ]; D) Kiwa hirsuta modified from Muséum National D’Histoire Naturelle (MNHN) crustacean collection–credit Noémy Mollaret (CC BY 4.0); E) Kiwa tyleri modified from Thatje et al . [ 23 ] (CC BY 4.0); (F) Kiwa sp.…”

Section: Introductionmentioning

confidence: 99%

“…GM, which remains undescribed, was collected from hydrothermal vents on the Galapagos Microplate, a distinct spreading system between the Galapagos Rift to the East, and the northern and southern portions of the East Pacific Rise (EPR) to the West [ 29 ] ( Fig 2 ). The second species, Kiwa araonae [ 28 ], was collected from vents on the Australian-Antarctic Ridge (AAR) in the southwest Pacific sector of the Southern Ocean ( Fig 2 ). The discovery of this species greatly extends the known range of Kiwaidae on mid-ocean ridges by ~6,500 km from the previous most westerly location of Kiwa hirsuta on the PAR and is the second species to be found in the Southern Ocean, after K .…”

Section: Introductionmentioning

confidence: 99%

“…hirsuta , Lee et al . [ 28 ] have suggested that the spread of kiwaids around the globe may have been more complicated than first assumed and have questioned the simple seep-to-vent evolutionary progression proposed by Roterman et al . [ 26 ].…”

Section: Introductionmentioning

confidence: 99%

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A new yeti crab phylogeny: Vent origins with indications of regional extinction in the East Pacific

et al. 2018

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The recent discovery of two new species of kiwaid squat lobsters on hydrothermal vents in the Pacific Ocean and in the Pacific sector of the Southern Ocean has prompted a re-analysis of Kiwaid biogeographical history. Using a larger alignment with more fossil calibrated nodes than previously, we consider the precise relationship between Kiwaidae, Chirostylidae and Eumunididae within Chirostyloidea (Decapoda: Anomura) to be still unresolved at present. Additionally, the placement of both new species within a new “Bristly” clade along with the seep-associated Kiwa puravida is most parsimoniously interpreted as supporting a vent origin for the family, rather than a seep-to-vent progression. Fossil-calibrated divergence analysis indicates an origin for the clade around the Eocene-Oligocene boundary in the eastern Pacific ~33–38 Ma, coincident with a lowering of bottom temperatures and increased ventilation in the Pacific deep sea. Likewise, the mid-Miocene (~10–16 Ma) rapid radiation of the new Bristly clade also coincides with a similar cooling event in the tropical East Pacific. The distribution, diversity, tree topology and divergence timing of Kiwaidae in the East Pacific is most consistent with a pattern of extinctions, recolonisations and radiations along fast-spreading ridges in this region and may have been punctuated by large-scale fluctuations in deep-water ventilation and temperature during the Cenozoic; further affecting the viability of Kiwaidae populations along portions of mid-ocean ridge.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A new yeti crab phylogeny: Vent origins with indications of regional extinction in the East Pacific

et al. 2018

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“…High-temperature 'black-smoker' venting occurs at two vent fields, on ESR segments E2 and E9 [27,29,30], which are inhabited by vent-specific species including the yeti crab Kiwa tyleri, the gastropods Gigantopelta chessoia and Lepetodrilus concentricus, the stalked barnacle Neolepas scotiaensis, the seven-armed sea star Paulasterias tyleri and undescribed actinostolid anemones [31][32][33][34][35][36], in assemblages supported by chemoautotrophic carbon fixation [37][38][39][40]. To date, the AAR sites have not been visited and imaged by remotely operated vehicles (ROVs), but specimens of associated vent fauna Kiwa araonae and Paulasterias tyleri have been collected, indicating the presence of faunal assemblages supported by chemosynthesis [28,41].…”

Section: Introductionmentioning

confidence: 99%

Fauna of the Kemp Caldera and its upper bathyal hydrothermal vents (South Sandwich Arc, Antarctica)

et al. 2019

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Faunal assemblages at hydrothermal vents associated with island-arc volcanism are less well known than those at vents on mid-ocean ridges and back-arc spreading centres. This study characterizes chemosynthetic biotopes at active hydrothermal vents discovered at the Kemp Caldera in the South Sandwich Arc. The caldera hosts sulfur and anhydrite vent chimneys in 1375–1487 m depth, which emit sulfide-rich fluids with temperatures up to 212°C, and the microbial community of water samples in the buoyant plume rising from the vents was dominated by sulfur-oxidizing Gammaproteobacteria. A total of 12 macro- and megafaunal taxa depending on hydrothermal activity were collected in these biotopes, of which seven species were known from the East Scotia Ridge (ESR) vents and three species from vents outside the Southern Ocean. Faunal assemblages were dominated by large vesicomyid clams, actinostolid anemones, Sericosura sea spiders and lepetodrilid and cocculinid limpets, but several taxa abundant at nearby ESR hydrothermal vents were rare such as the stalked barnacle Neolepas scotiaensis. Multivariate analysis of fauna at Kemp Caldera and vents in neighbouring areas indicated that the Kemp Caldera is most similar to vent fields in the previously established Southern Ocean vent biogeographic province, showing that the species composition at island-arc hydrothermal vents can be distinct from nearby seafloor-spreading systems. δ13C and δ15N isotope values of megafaunal species analysed from the Kemp Caldera were similar to those of the same or related species at other vent fields, but none of the fauna sampled at Kemp Caldera had δ13C values, indicating nutritional dependence on Epsilonproteobacteria, unlike fauna at other island-arc hydrothermal vents.

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A new species of the bathyal yeti crab genus Kiwa Macpherson, Jones & Segonzac, 2005 (Decapoda: Anomura: Kiwaidae) from a hydrothermal vent field in the Eastern Pacific Ocean, with a key to the genus

Liu,

Lin,

Mendoza

2024

Journal of Crustacean Biology

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A new species of yeti crab is described from a hydrothermal vent field near the equatorial Eastern Pacific Rise (EPR)-Galapagos Microplate at a depth of 1,628 m. Kiwa gemman. sp. is the fifth species of the family Kiwaidae Macpherson, Jones & Segonzac, 2005 to be described thus far. The new species can be distinguished from other congeners by having the lateral margin of chelipeds without spines, slender and mostly straight chelar fingers, and the spinose mesial margin of the endopod of the uropod. Also notable are the unique short, stiff, scaly-tipped setae on the antennal peduncles and chelipeds, which have not been reported to occur in congeners. A key to the species of the genus KiwaMacpherson, Jones & Segonzac, 2005 is provided.

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A new species of yeti crab, genus Kiwa Macpherson, Jones and Segonzac, 2005 (Decapoda: Anomura: Kiwaidae), from a hydrothermal vent on the Australian-Antarctic Ridge

Cited by 6 publications

References 11 publications

A new yeti crab phylogeny: Vent origins with indications of regional extinction in the East Pacific

A new yeti crab phylogeny: Vent origins with indications of regional extinction in the East Pacific

Fauna of the Kemp Caldera and its upper bathyal hydrothermal vents (South Sandwich Arc, Antarctica)

A new species of the bathyal yeti crab genus Kiwa Macpherson, Jones & Segonzac, 2005 (Decapoda: Anomura: Kiwaidae) from a hydrothermal vent field in the Eastern Pacific Ocean, with a key to the genus

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