Species Card of Copepod
Calanoida ( Order )
    Clausocalanoidea ( Superfamily )
        Aetideidae ( Family )
            Pseudochirella ( Genus )
Pseudochirella vervoorti  Tanaka & Omori, 1969   (F)
Ref.:
Tanaka & Omori, 1969 a (p.166, Descr.F, figs.F); Bradford & Jillett, 1980 (p.67); Markhaseva, 1989 (p.38, 59, fig.F); 1996 (p.293, figs.F)
Species Pseudochirella vervoorti - Plate 1 of morphological figuresissued from : O. Tanaka & M. Omori in Publ. Seto Mar. Biol. Lab., 1969, XVII (3). [p.167, Fig.5].
Female (from Izu Region, Japan): a, habitus (dorsal); b-c, forehead (dorsal and lateral, respectively); d-f, posterior prosome and urosome (dorsal, right side and left side, respectively); g, A2; h, Mx1; i, Mxp; j, P1; k, P2; l, P3; m, P4; n, inner margin of 1st basal segments of P4.


Species Pseudochirella vervoorti - Plate 2 of morphological figuresIssued from : E.L. Markhaseva in USSR Acad. Sci., Zool. Inst., Explor. Fauna Seas. Marine Plankton, 1989, 41 (49). [p.52, Fig.10].
Female: Thoracic segment 5 and genital segment.
Nota from the key:
1 - Genital segment symmetrical.
2 - Thoracic posterior corners segment 5 ± asymmetrical.
3 - Corners of thoracic segment 5 not in expansion, rounded, with 1 sine on the right side.
4 - Genital segment length nearly as long as wide.

Nota Female: Complement from Markhaseva (1996, p.293):
Cephalothorax about 4.5 times longer than urosome.
5th thoracic segment asymmetrical; with spine on the right.
Genital segment symmetrical, barrel-like.
Urosomal segments covered with hairs.
A1 reaching the distal border of anal segment.
Exopod of P1 3-segmented, with indistinct separation between exopodal segments 1 and 2.
Endopod of P2 2-segmented.
Coxopodite of left P4 with 12 spines, right with 9 spines.

NZ: 2

Distribution map of Pseudochirella vervoorti by geographical zones
Species Pseudochirella vervoorti - Distribution map 2Issued from : E.L. Markhaseva in Issled. Fauny Morei, 1989, 41 (49). [p.59, Fig.17].
Geographical distribution of P. vervoorti.
1: from Tanaka, Omori, 1969; 2: present occurrence.
Loc:
Japan (Izu), Mariana Trench.

Type locality: Japan (Izu region).
N: 3
Lg.:
(111) F: 5,71; 5,66; {F: 5,66-5,71}
Rem.: bathy & abyssopelagic.

Markhaseva (1996, p.294) remarks that Tanaka & Omori (1969) noted close connection between this species and P. vervoorti Vervoort, 1949, but distinguished the species in segmentation of P2 endopod (1-segmented in P. semispina vs 2-segmented in P. vervoorti), in highter number of spines on coxopodite of P4 (7-8 in P. semispina vs 9-12 in P. vervoorti), in different proportion of endopod and exopod of A2 (exopod 1.2 times endopod in P. semispina), and in different arrangement of hairs on genital segment.
Last update : 30/01/2015
    to add your remark
  

 Any use of this site for a publication will be mentioned with the following reference :

Razouls C., Desreumaux N., Kouwenberg J. and de Bovée F., 2005-2021. - Biodiversity of Marine Planktonic Copepods (morphology, geographical distribution and biological data). Sorbonne University, CNRS. Available at http://copepodes.obs-banyuls.fr/en [Accessed February 24, 2021]

© copyright 2005-2021 Sorbonne University, CNRS

Webmaster
CNRS   Observatoire Océanologique de Banyuls sur Mer - Laboratoire Arago
Sorbonne Université

 

Version française
English version

 

Search

On the WEB of CNRS

 


Marine Planktonic Copepods

Marine Planktonic Copepods

 

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