Fiche d'espèce de Copépode
Cyclopoida ( Ordre )
    Oncaeidae ( Famille )
        Oncaea ( Genre )
Oncaea grossa  Heron & Frost, 2000   (F,M)
Ref.:
Heron & Frost, 2000 (p.1042, figs.F,M, tab.2, 3)
Espèce Oncaea grossa - Planche 1 de figures morphologiquesissued from : G.A. Heron & B.W. Frost in Proc. Biol. Soc. Washington, 2000, 113 (4). [p.1043, Fig.15, C-J].
Female (from NE Pacific): C, habitus (lateral; scale bar: t); D, pediger 4 posterior corner and urosome (dorsal; scale bar: t); E, right A1 (scale bar: x); G, right A2 (scale bar: x); H, labrum (scale bary); I, left Md (scale bar: y); J, right Mx1 (scale bar y).
Scale bars: 0.1 mm, see figures 3, 4, 5, 10 of Heron and Frost, 2000 for Oncaea canadensis and Oncaea insolita.

Nota: Ratio of length of prosome to that of urosome 2.16:1. Genital segment length approximately equal to that of remainder of urosome, anteroventral surface with transverse rows of minute spinules on and around a protruding ledge, followed by horizontal rows of small spinules. P5 with elongate free segment, 2 terminal setae, the longer less than twice the length of the shorter, which is dentiform; outer basal seta. P6 represented by spiniform setule on gonopore.


Espèce Oncaea grossa - Planche 2 de figures morphologiquesissued from : G.A. Heron & B.W. Frost in Proc. Biol. Soc. Washington, 2000, 113 (4). [p.1022, Fig.2, E].
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 P2 with lateral spine extending beyond distal margin cone.


Espèce Oncaea grossa - Planche 3 de figures morphologiquesissued from : G.A. Heron & B.W. Frost in Proc. Biol. Soc. Washington, 2000, 113 (4). [p.1044, Fig.16].
Female: A, right Mx2 (scale bar: v); B, right Mxp (scale bar: x); C-F, P1 to P4 (scale bar: x).
Scale bars: 0.1 mm, see figures 3, 4, 5, 10 of Heron and Frost, 2000 for Oncaea canadensis and Oncaea insolita.

Nota: Endopods of P2 and P3 with a small terminal cone, P4 without.


Espèce Oncaea grossa - Planche 4 de figures morphologiquesissued from : G.A. Heron & B.W. Frost in Proc. Biol. Soc. Washington, 2000, 113 (4). [p.1045, Fig.17, A-C].
Male: A, habitus (lateral; scale bar: t); B, pediger 4 posterior corner and urosome (dorsal; scale bar: x); C, Mxp (ventral; scale bar: x).
Scale bars: 0.1 mm, see figures 3, 4, 5, 10 of Heron and Frost, 2000 for Oncaea canadensis and Oncaea insolita.

Nota: Ratio of length of prosome to that of urosome 1.97:1. Swimming legs as in female. P5 not delimited from thoracic segment, armament similar to that of female. P6 represented by posterolateral flap on ventral surface of genital segment.

Ref. compl.:
Nishibe & Ikeda, 2007 (p.609, vertical distribution, seasonal variations); 2008 (p.398, tab.1)
NZ: 2

Carte de distribution de Oncaea grossa par zones géographiques
Espèce Oncaea grossa - Carte de distribution 2issued from : Y. Nishibe & T. Ikeda in Mar. Biol., 2007, 150. [p.618, Fig.9];
Oncaea grossa. Vertical distribution of each developmental stage (C1-C6) at site H (41°30'N, 145°47'E, depth 6,670 m, in the Oyashio region).
Female and male data are shown separately for C4-C6.
Abbreviations are D day, N night.
Espèce Oncaea grossa - Carte de distribution 3issued from : Y. Nishibe & T. Ikeda in Mar. Biol., 2007, 150. [p.612, Fig.2];
Vertical profiles of temperature (solid line) and salinity (broken line) at site H (41°30'N, 145°47'E, depth 6,670 m, in the Oyashio region).
Loc:
NE Japan (Oyashio region), Alaska (Prince William Sound), Station 'P', Washington inland
N: 4
Lg.:
(848) F: 0,76-0,81; M: 0,63-0,7; { F: 0,76-0,81; M: 0,63-0,70}
Rem.: mesopelagic.
For Heron & Frost (2000, p.1045) the species closely resembles O. prolata in many characters. The denticles of the P5 female are conspicuaous and obscure for O. prolata. The Mxp male has a robust 2nd segment with rows of conspicuous spatulate setules, while O. prolata
Dernière mise à jour : 26/01/2015

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

Razouls C., Desreumaux N., Kouwenberg J. et de Bovée F., 2005-2024. - Biodiversité des Copépodes planctoniques marins (morphologie, répartition géographique et données biologiques). Sorbonne Université, CNRS. Disponible sur http://copepodes.obs-banyuls.fr [Accédé le 29 mars 2024]

© copyright 2005-2024 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