New species of Munidopsis (Decapoda: Anomura: Galatheidae) from hydrothermal vent in Okinawa Trough and cold seep in Sagami Bay

Cubelio, Sherine Sonia; Tsuchida, Shinji; Watanabe, Seiichi

doi:10.18353/crustacea.36.0_1

Cited by 12 publications

(3 citation statements)

References 18 publications

(7 reference statements)

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“…Among other Galatheidae, the genus Munidopsis is a typical member of hydrothermal vent communities. It was reported that three species of Munidopsis associated with vents in the Okinawa Trough lacked a dense patch of plumose setae and filamentous bacteria on their ventral surfaces (Cubelio et al , 2007). Kiwa hirsuta which was found from the Pacific–Antarctic Ridge has a pair of chelipeds densely covered by long plumose setae with clusters of filamentous bacteria (Goffredi et al , 2008).…”

Section: Discussionmentioning

confidence: 99%

Epibiotic association between filamentous bacteria and the vent-associated galatheid crab,Shinkaia crosnieri(Decapoda: Anomura)

et al. 2010

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The galatheid crabShinkaia crosnieri, is the sole member of the subfamily Shinkaiinae. It is abundant and forms dense beds around active hydrothermal vents in the Okinawa Trough. Thousands of filamentous bacteria attached to the plumose setae on the ventral surface of this crab were observed using field-emission scanning electron microscopy and transmission electron microscopy. Nucleic acids were extracted from the filamentous bacteria, and the phylotypes of 16S rRNA genes were identified from 81 clones. These phylotypes were divided into three groups: Epsilonproteobacteria (74%); Gammaproteobacteria (20%); and Bacteroidetes (6%). Gamma- and major phylotypes of Epsilonproteobacteria were also detected using fluorescencein situhybridization analysis. These Epsilon- and Gammaproteobacteria were closely related to cultured and uncultured bacteria from hydrothermal vent fields including episymbionts of vent-associated invertebrates such asRimicaris exoculata, Alvinella pompejana, the scaly-foot snail,Kiwa hirsutaetc. The carbon isotopic compositions of the muscle ofS. crosnieriand in filamentous bacteria were similar. The muscle ofS. crosniericontained monounsaturated C16and C18fatty acids, which are known to be characteristic of sulphur-oxidizing bacteria in H2S-rich marine habitats. Through the video images transmitted by a submersible and a remotely operated vehicle,S. crosnieriwas observed to comb out its ventral setae using the third maxilliped and appeared to consume the contents. These evidences suggest the epibiotic association betweenS. crosnieriand the filamentous bacteria attached to the ventral setae of the crab, but the details of role and function are still unclear at the present study.

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Section: Discussionmentioning

confidence: 99%

Epibiotic association between filamentous bacteria and the vent-associated galatheid crab,Shinkaia crosnieri(Decapoda: Anomura)

et al. 2010

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“…Also, only a single white galatheid species (Muni dopsis sp. ; Cubelio et al 2008), known to be endemic in cold seep ar eas including Sagami Bay , was obser ved. Most baited camera studies indicate a prominent role of scavenging amphipods (e.g.…”

Section: Discussionmentioning

confidence: 99%

Shifting feeding behaviour of deep-sea buccinid gastropods at natural and simulated food falls

Aguzzi

Jamieson

Fujii

et al. 2012

Mar. Ecol. Prog. Ser.

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The deep sea is a low food input envir onment, hence large food falls from the surface waters are important in suppor ting a wealth of scavenging deep-sea fauna. The pr obability of observing such events is ver y low, due to their unpr edictable and short-lived nature. The video system of a cabled obser vatory installed within a cold seep clam field in Sagami Bay (1100 m depth; Central Japan) recorded a rare event. We observed a fish dying directly in front of the camera and being immediately perceived and preyed upon by Buccinum yoroianum (Neo gastropoda: Buccinidae), while still alive. Up to 76 large snails responded to the fish and consumed the carcass within ~8 h, with no inter vention by decapod cr ustaceans. There was only small par ticipation of eelpouts (Zoarcidae). For comparison, we report on supplementary findings from a different area and depth of the Pacific Ocean. These obser vations were recorded by a baited camera lander which simulated a food fall. W ithin 6 h, the buccinid Tacita zenkevitchi aggregated on the bait, competing with fishes. These observations confirm that deep-sea buccinids can shift their feeding behaviour between active pr edation and scavenging. Our perception, however, seems conditioned by the observational methodology we use: buccinids may appear as scavengers when using photography (e.g. by baited landers) pr oducing single snapshots in time, or as pr edators when observed in a natural setting and video-taped continuously with a cabled observatory.

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“…The holotype of M. kaiko was also collected from an area under hydrothermal influence, despite being very weak ('Futagoyama Taka' area; Miyazaki et al 2016;Makabe et al 2017). Decapod crustaceans of deep-sea chemosynthetic communities have been rather well studied in the Okinawa Trough (e.g., Baba & Williams 1988;Takeda & Hashimoto 1990;Kikuchi & Ohta 1995;Kikuchi & Hashimoto 2000;Watabe & Miyake 2000;Cubelio et al 2007;Yahagi et al 2015), and thus the discovery of the present two new species of Metacrangon from near hydrothermally influenced areas is remarkable.…”

Section: Introductionmentioning

confidence: 99%

Two new species of the crangonid genus Metacrangon Zarenkov, 1965 (Crustacea: Decapoda: Caridea) from the Okinawa Trough, Japan

Komai

Chen

Watanabe

2018

Zootaxa

810

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Two new species of the crangonid shrimp genus Metacrangon Zarenkov, 1965, are described and illustrated on the basis of materials collected from the Okinawa Trough, Ryukyu Islands, southern Japan, during diving operations of remotely operated vehicles (ROVs): M. ryukyu n. sp. from off Iheya Island, at depth of 986 m; and Metacrangon kaiko n. sp. from NE of Yonaguni Island, at depth of 2205 m. The two new species resemble members of the M. munita (Dana, 1852) species group, but are both characteristic in having setose dactyli on pereopods 4 and 5. Some minor differences in morphology and genetic analysis using partial sequences of the barcoding mitochondrial COI gene support the recognition of the two new species. Holotypes of the two new species were collected from hydrothermally influenced areas, representing a previously unknown habitat for species of Metacrangon.

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New species of Munidopsis (Decapoda: Anomura: Galatheidae) from hydrothermal vent in Okinawa Trough and cold seep in Sagami Bay

Cited by 12 publications

References 18 publications

Epibiotic association between filamentous bacteria and the vent-associated galatheid crab,Shinkaia crosnieri(Decapoda: Anomura)

Epibiotic association between filamentous bacteria and the vent-associated galatheid crab,Shinkaia crosnieri(Decapoda: Anomura)

Shifting feeding behaviour of deep-sea buccinid gastropods at natural and simulated food falls

Two new species of the crangonid genus Metacrangon Zarenkov, 1965 (Crustacea: Decapoda: Caridea) from the Okinawa Trough, Japan

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