Fiche d'espèce de Copépode
Cyclopoida ( Ordre )
    Oncaeidae ( Famille )
        Oncaea ( Genre )
Oncaea prolata  Heron, 1977   (F,M)
Syn.: Oncaea notopus : Giesbrecht, 1902 (p.41, figs.F); Vervoort, 1951 (p.152); 1957 (p.148)
Ref.:
Heron, 1977 (p.68, Descr.F, figs.F); Gardner & Szabo, 1982 (p.122, figs.F); Heron & Bradford-Grieve, 1995 (p.41, figs.F,M); Bradford-Grieve & al., 1999 (p.887, 970, figs.F,M); Heron & Frost, 2000 (p.1042, figs.F,M, tab.2, 3)
Espèce Oncaea prolata - Planche 1 de figures morphologiquesissued from : G.A. Heron & B.W. Frost in Proc. Biol. Soc. Washington, 2000, 113 (4). [p.1043, Fig.15, A-B].
Female (from NE Pacific): pediger 4 posterior corner and urosome (lateral; scale bar: x).
Nota: P5 displays one of the important characters for distinguising it from other similar species: the longer terminal seta is approximately twice as long as the short spiniform seta

Male: B, Mxp (ventral; scale bar: x).
Nota: Mxp has a slight inner swelling and bears 2 setae and 3 medial rows of spatulate setules.


Espèce Oncaea prolata - Planche 2 de figures morphologiquesissued from : G.A. Heron & B.W. Frost in Proc. Biol. Soc. Washington, 2000, 113 (4). [p.1022, Fig.2, D].
Female: P2-P4 endopod terminal ''spine set'' (combination of the lengths, shapes, and position of the three or two terminal spines on the endopods of swimming legs 2-4 , from left to right in figure, for different Oncaea' species).

Nota: endopod of P3 with lateral spine extending about as distal margin of cone.


Espèce Oncaea prolata - Planche 3 de figures morphologiquesissued from : G.A. Heron in Antarct. Res. Ser. Washington, 1977, 26. [p.69, Fig.19, g-r].
Female (from SW Pacific-Antarctic area): g, habitus (lateral; scale bar: X); h, posterior of last prosomal segment and urosome (lateral; scale bar: Y); i, urosome (dorsal; scale bar: Y); j, left A1 (scale bar: Y); k, left A2 (scale bar: Y); l, labrum (scale bar: Z); m, left Md (scale bar: Z); n, right Mx1 (scale bar: Z); o, right Mx2 (scale bar: Z); p, left Mxp (scale bar: Y); q, P1 (scale bar: Y); r, P2 (scale bar: Y).


Espèce Oncaea prolata - Planche 4 de figures morphologiquesissued from : G.A. Heron in Antarct. Res. Ser. Washington, 1977, 26. [p.71, Fig.20, a-c].
Female: a, P3 (scale bar: Y); b, P4 (scale bar: Y); c, P5 (scale bar: Z).


Espèce Oncaea prolata - Planche 5 de figures morphologiquesissued from : W. Giesbrecht in Copepoden. Res. voyage du S. Y. Belgica. Rapports scientifiques, Zoologie, 1902. [Taf. XIII, Figs. 1-6]. As Oncaea notopus.
Female (from 70°25'S, 83°27'W): 1, habitus (dorsal); 2, Mxp; 3, A2; 4, caudal ramus; 5, P5; 6, endopod of P4.


Espèce Oncaea prolata - Planche 6 de figures morphologiquesissued from : G.A. Heron & J.M. Bradford-Grieve in New Zealand Oceanogr. Inst. memoir 104. NIWA, 1995. [p.42, Fig.20].
Male (from 62°37'S, 169°51'E): a-b, habitus (lateral and dorsal, respectively) [r]; c, left Mxp [s]; d, P5 [u].

Scale in p.13, Fig.2. Letter in brackets.

Nota: Body with scattered refractile points.
Prosome slightly longer than double length of urosome.
Urosome 1st segment with transverse sclerotized line dorsoposteriorly.
A1 with segments corresponding to terminal 3 of the female fused in male; armature similar to corresponding segments of female, except for absence of distal seta on 3rd segment.
Mxp lacking small segment proximal to claw of female; claw with sinuous profile; armament similar to that of O. conifera male.
Swimming legs as in female.
P5 a free segment; long terminal seta about 1.7 times length of shorter seta; seta on body near leg.
P6 represented by posterolateral flap on ventral surface of genital segment (fig. a)

Ref. compl.:
Hopkins & Torres, 1988 (tab.1); Razouls & al., 2000 (p.343, tab. 4, 5, Appendix); Galbraith, 2009 (pers. comm.)
NZ: 3

Carte de distribution de Oncaea prolata par zones géographiques
Loc:
Antarct. (Scotia Sea, Weddell Sea, SW Pacif., Bellinshausen Sea), sub-Antarct. (SW Pacif.), NE Pacif., Strait of Juan de Fuca, off British Columbia, Washington inland (Dabob Bay)
N: 6
Lg.:
(25) F: 0,75; (33) F: 0,60-0,65; (50) F: 0,71-0,64; M: 0,5; (679) F: 0,72-0,67; (848) F: 0,64-0,7; M: 0,56-0,59; {F: 0,60-0,75; M: 0,50-0,59}
Rem.: Sampling depth (Antarct., sub-Antarct.) : 0-1000-2000 m.
La répartition géographique de cette espèce est surprenante.
Dernière mise à jour : 27/01/2016

 Toute utilisation de ce site pour une publication sera mentionnée avec la référence suivante :

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 26 février 2021]

© copyright 2005-2021 Sorbonne Université, CNRS

Webmaster
Mentions légales et informations nominatives
CNRS   Observatoire Océanologique de Banyuls sur Mer - Laboratoire Arago
Sorbonne Université

 

Version française
English version

 

Rechercher

Sur le WEB du CNRS

 


Copépodes planctoniques marins

Copépodes planctoniques marins

 

Imprimer Contact Accueil Plan du site Accès restreint Retour Une du Labo Imprimer Contact Plan du site Crédits Téléchargez les Plug-Ins