Fiche d'espèce de Copépode
Calanoida ( Ordre )
    Clausocalanoidea ( Superfamille )
        Aetideidae ( Famille )
            Pseudochirella ( Genre )
Pseudochirella dubia  (Sars, 1905)   (F,M)
Syn.: Undeuchaeta dubia Sars, 1905 b (p.15, Rem.F);
Euchirella granulata A. Scott, 1909 (p.58, figs.F); Sewell, 1948 (p.553, 556, 562);
Pseudochirella obtusa (M) : Vervoort, 1949 (p.37, figs.M);
Pseudeuchirella dubia: Björnberg, 1973 (p.324, 388)
Ref.:
Sars, 1925 (p.96, figs.F,M); Vervoort, 1952 g (n°48, p.3, figs.F,M); Bradford & al., 1980 (p.66); Markhaseva, 1989 (p.38, 41, 55, figs.F,M); 1996 (p.262, figs.F,M); Bradford-Grieve & al., 1999 (p.879, 923, figs.F)
Espèce Pseudochirella dubia - Planche 1 de figures morphologiquesissued from : E.L. Markhaseva in Proc. Zool. Inst. RAN, St. Petersburg, 1996, 268. [p.263, Fig.209].
Female (from NW Pacif.: Kuril Trench).

Nota:
Cephalothorax about 3.5-4.0 times longer than urosome.
Posterior corners of last thoracic segment rounded, symmetrical.
Genital segment symmetrical, nearly as long as wide, and nearly as long as 2 following segments together; ventral swelling strongly protruded, widest in its posterior part (lateral view).
Urosomal segments 1-3 with hairs on the surface.
Body surface of some specimens with chitinous thickenings.
A1 longer than cephalothorax reaching urosomal segments 2-3.
Exopodite of P1 3-segmented.
Endopodite of P2 indistinctly 2-segmented (in Sars, 1925) or distinctly segmented (in A. Scott, 1909).
Coxopodite of P4 with about 30 thin fan-like spines (Sars, 1925 noted 14 spines).


Espèce Pseudochirella dubia - Planche 2 de figures morphologiquesIssued from : W. Vervoort in Zool. Verh., Leiden, 1949, 5. [p.47, Fig.21,c]. As Pseudochirella obtusa.
Male (from Banda Sea): c, P5.


Espèce Pseudochirella dubia - Planche 3 de figures morphologiquesIssued from : G.O. Sars in Résult. Camp. Scient. Prince Albert I, 69, pls.1-127 (1924). [Pl.XXVI, figs.10-15].
Female (near Azores Is.): 10, habitus (dorsal); 11, idem (lateral left side); 12, forehead (lateral); 13, basipodal segment of P4.

Male: 14, habitus (lateral left side); 15, P5.
Head and 1st thoracic segment with suture more or less visible

Nota: Strong development of setae on A1.

Nota Male after Markhaseva (1996, p.263): Cephalon and 1st thoracic segment indistinctly separated. Posterior corners of last thoracic segment rounded, without spines. Cephalothorax about 3 times longer than urosome; Exopodal segment 2 of left P5 with 3 teeth in distal part of segment.


Espèce Pseudochirella dubia - Planche 4 de figures morphologiquesissued from : A. Scott in Siboga-Expedition, 1909, XIX a. [Plate XIII, Figs.1-12]. As Euchirella granulata.
Female (from Manipa Strait): 1, habitus (dorsal); 2, forehead (lateral); 3, last thoracic and genital segments (left side); 4, rostrum; 5, portion of the integument with fine granulations (highly magnofied); 6, A1; 7, A2; 8, Mx1; 9, P1; 10, P2; 11, P4 (basal portion only).


Espèce Pseudochirella dubia - Planche 5 de figures morphologiquesIssued from : E.L. Markhaseva in USSR Acad. Sci., Zool. Inst., Explor. Fauna Seas. Marine Plankton, 1989, 41 (49).
p.52, Fig.1].
Female: Thoracic segment 5 and genital segment.
Nota from the key:
1 - Genital segment symmetrical.
2 - Thoracic posterior corners symmetrical.
3 - Exopodite 2 of A2 with 3 setae.
4 - Thoracic segments 4 and 5 separate.
5 - Genital segment with ventral protuberance backward. Genital segment (in lateral in lateral view) nearly 2 times large than the following segment.
6 - Body length: 4.8-6,1 mm.


Espèce Pseudochirella dubia - Planche 6 de figures morphologiquesPseudochirella dubia Male:
1 - Exopdite 2 of left P5 with 3 teeth in distal part of segment.2 - Posterior corners of last thoracic segment without spines.

Ref. compl.:
Jespersen, 1934 (p.67); Sewell, 1948 (p.500); Grice & Hulsemann, 1967 (p.15); Razouls & al., 2000 (p.343, Appendix); Park & Ferrari, 2009 (p.143, Table 4, Appendix 1)
NZ: 9

Carte de distribution de Pseudochirella dubia par zones géographiques
Espèce Pseudochirella dubia - Carte de distribution 3
Carte de 1996
Espèce Pseudochirella dubia - Carte de distribution 4Issued from : E.L. Markhaseva in Issled. Fauny Morei, 1989, 41 (49). [p.55, Fig.10].
Geographical distribution of P. dubia.
1: from literature; 2: present occurences.
Loc:
Antarct. (SW Atlant., Indian), N Atlant. (Azores), Davis Strait, Faroe Is., W Indian, Indonesia-Malaysia, Philippines, Japan Trench, Kuril Is., S Chile.

Type locality: 36°17'N, 28°53'W
N: 9
Lg.:
(1) F: 4,8; M: ± 4; (5) F: 5,5; (37) F: 6,1-4,8; {F: 4,80-6,10; M: 4,00}
Rem.: bathy-abyssopélagique.
Sampling depth (Antarct.) : 7000 m.
Dernière mise à jour : 05/02/2015

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

Razouls C., Desreumaux N., Kouwenberg J. et de Bovée F., 2005-2020. - Biodiversité des Copépodes planctoniques marins (morphologie, répartition géographique et données biologiques). Sorbonne Université, CNRS. Disponible sur http://copepodes.obs-banyuls.fr [Accédé le 01 décembre 2020]

© copyright 2005-2020 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