Fiche d'espèce de Copépode
Calanoida ( Ordre )
    Hyperbionychidae ( Famille )
        Hyperbionyx ( Genre )
Hyperbionyx pluto  Ohtsuka, Roe & Boxshall, 1993   (F,M)
Ref.:
Ohtsuka & al., 1993 a (p.70, figs.F,M); Boxshall & Halsey, 2004 (p.129: figs.F,M)
Espèce Hyperbionyx pluto - Planche 1 de figures morphologiquesissued from : S. Ohtsuka, H.S.J. Roe & G.A. Boxshall inSarsia, 1993, 78. [p.71, Fig.1].
Female (from off N Cape Verde Islands): A, habitus (dorsal); B, idem (lateral right side); C, genital double somite (ventral); D, rostrum; E, labrum and paragnath (lateral view); F, idem (ventral view); G, paragnath; H, anal somite and caudal rami (ventral).
Scales in mm. Paratype: A, B, E, F; holotype: C, D, G, H.
Nota: Rostrum triangular, with pair of long filaments. A1 asymmetrical, left longer than right (terminal segments of left A1 missing); right A1 27-segmented. Genital apertures asymmetrically located (left aperture more anteriorly located than right). Caudal rami asymmetrical, right longer than left.


Espèce Hyperbionyx pluto - Planche 2 de figures morphologiquesissued from : S. Ohtsuka, H.S.J. Roe & G.A. Boxshall inSarsia, 1993, 78. [p.72, Fig.2].
Female: A, right A1; B, left A1.

Male: C, terminal fused segment of left A1.
Scales in mm. Holotype: A,B; paratype: C.


Espèce Hyperbionyx pluto - Planche 3 de figures morphologiquesissued from : S. Ohtsuka, H.S.J. Roe & G.A. Boxshall inSarsia, 1993, 78. [p.73, Fig.3].
Female: A, A2; B, terminal part of 2nd endopod segment of A2 (vestigial seta indicated by arrowhead); C, 9th exopod segment of A2; D, Md (mandibular cutting edge); E, Md (mandibular palp); F, Mx1; G, terminal part of exopod of Mx1.
Nota: Mandibular gnathobase heavily chitinized, with 2 stout teeth and row of setules. Mx1 with praecoxal arthrite produced medially, bearing 7 spines and 6 setae; coxal endite developed with 3 setae terminally; coxal epipodite with 2 long, plumose setae; 1st basal endite rudimentary; endopod elongate, 1-segmented, with 1 middle, 1 subterminal and 3 terminal setae; exopod expanded, incompletely fused to basis, with 2 plumose setae terminally plus 1 tube pore (at base of outer seta).
Scales in mm.


Espèce Hyperbionyx pluto - Planche 4 de figures morphologiquesissued from : S. Ohtsuka, H.S.J. Roe & G.A. Boxshall inSarsia, 1993, 78. [p.75, Fig.4].
Female: A, Mx2; B, 2nd coxal endite of Mx2; C, basal endite of Mx2; D, endopod of Mx2; E, Mxp (with the locations of pores indicated by arrowheads); F, 5th endopod segment of Mxp.
Nota: Mx2 well developed, 1st praecoxal endite with 3 setae and 2 small, spiniform elements, 2nd with 1 serrate; 1st coxal endite with 2 serrate setae, 2nd coxal endite (Fig.4B) produced anteriorly, with 1 strongly serrate spine and 2 setae terminally; basal endite (Fig.4C) considerably produced anteriorly, with 1 large serrate spine terminally and 1 moderate serrate seta, 2 weak setae and 1 tube pore subterminally; endopod (Fig.4D) indistinctly 4-segmented, 1st well developed, with 1 heavily chitinized spine and 3 weak setae, 2nd with 3 setae, 3rd with 1 seta, 4th with 2 setae.
Scales in mm.


Espèce Hyperbionyx pluto - Planche 5 de figures morphologiquesissued from : S. Ohtsuka, H.S.J. Roe & G.A. Boxshall inSarsia, 1993, 78. [p.76, Fig.5].
Female: A, P1 (anterior); B, distal two endopod segments of left P1; C, outer margin of 2nd and 3rd exopod segments of P1; D, P2 (anterior); E, P3 (anterior); F, basal seta of P3; G, P4 (anterior); H, P5 (anterior).
Scales in mm.


Espèce Hyperbionyx pluto - Planche 6 de figures morphologiquesissued from : S. Ohtsuka, H.S.J. Roe & G.A. Boxshall inSarsia, 1993, 78. [p.77, Fig.6].
Male: A, habitus (lateral right side); B, rostrum; C, urosome (dorsal, gonopore indicated by large arrowhead, position of missing caudal seta by small arrowhead); D, left A1 (geniculation indicated by arrowhead); E, ancestral segments XIX to XXI (geniculation indicated by arrowhead).
Scales in mm.
Nota: Rostrum as in female. Urosome 5-segmented. Genital somite with gonopore. Left A1 geniculate, indistinctly 26-segmented, geniculation between 20th and 21st segments. ventrolaterally on right side.


Espèce Hyperbionyx pluto - Planche 7 de figures morphologiquesissued from : S. Ohtsuka, H.S.J. Roe & G.A. Boxshall in Sarsia, 1993, 78. [p.79, Fig.7].
Male: A, terminal end of syncoxa of left Mxp; B, terminal end of basis of right Mxp; C, 3rd exopod segment of left P2; D, endopod of left P3; E, 3rd exopod segment of right P3; F, endopod of right P4; G, 3rd exopod segment of left P4; H, P5 (anterior); I, vestigial endopod of left P5; J, terminal seta of 3rd exopod segment of left P5; K, medial spine on 2nd exopod segment of left P5; L, vestigial endopod of right P5.
Scales in mm.


Espèce Hyperbionyx pluto - Planche 8 de figures morphologiquesissued from : S. Ohtsuka, H.S.J. Roe & G.A. Boxshall inSarsia, 1993, 78. [p.79, Fig.7].
Female (SEM micrographs): A, genital double somite (ventral); B, right genital aperture and folds marking plane of fusion between genital and 1st abdominal somites indicated by arrow.
Scale bars: A: 0.2 mm, B: 0.1 mm.

Ref. compl.:
Bradford-Grieve, 2004 (p.283)
NZ: 1

Carte de distribution de Hyperbionyx pluto par zones géographiques
Loc:
NE Atlant. (Cape Verde Is.)
N: 1
Lg.:
(400) F: 10,84-9,96; M: 8,4; {F: 9,96-10,84; M: 8,40}
Rem.: hyperbenthique de profondeur (? 4000 m).
Voir aussi les remarques en anglais
Dernière mise à jour : 06/01/2015

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Razouls C., Desreumaux N., Kouwenberg J. et de Bovée F., 2005-2021. - Biodiversité des Copépodes planctoniques marins (morphologie, répartition géographique et données biologiques). Sorbonne Université, CNRS. Disponible sur http://copepodes.obs-banyuls.fr [Accédé le 02 décembre 2021]

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