Species Card of Copepod
Calanoida ( Order )
    Clausocalanoidea ( Superfamily )
        Phaennidae ( Family )
            Onchocalanus ( Genus )
Onchocalanus wolfendeni  Vervoort, 1950   (F,M)
Syn.: Xanthocalanus magnus : Wolfenden,1908 (p.37, figs.F);
Onchocalanus magnus : Wolfenden, 1911 (p.275, figs.F); Cépède, 1914 (p.152)
Ref.:
Vervoort, 1950 a (p.22, figs.F); 1951 (p.93, Rem.); 1965 a (p.391, 396); Bradford, 1971 b (p.22, figs.F); Park, 1983 a (p.347, Redescr.F,M, figs.F,M); Razouls, 1994 (p.108, figs.F,M); Bradford-Grieve & al., 1999 (p.880, 929, figs.F); Park & Ferrari, 2009 (p.143, Table 3, Appendix 1, biogeography from Southern Ocean)
Species Onchocalanus wolfendeni - Plate 1 of morphological figuresissued from : T. Park in Antarct. Res. Ser. Washington, 1983, 39 (5). [p.349, Fig.20].
Female: a, habitus (dorsal); b, idem (lateral left side); c, genital segment (lateral left side); d, idem (ventral); e, forehead (lateral); f, rostrum (anterior); g, Mxp; h, P1 (posterior); i, P1 (anterior); j, P2 (posterior); k, P5 (posterior).


Species Onchocalanus wolfendeni - Plate 2 of morphological figuresissued from : T. Park in Antarct. Res. Ser. Washington, 1983, 39 (5). [p.350, Fig.21].
Male: a, forehead (lateral); b, last thoracic segments with P5 and urosome (lateral left side); c, last thoracic segments and urosome (dorsal); d, forehead (dorsal); e, rostrum (anterior); f, Mx2; g, P1 (anterior); h, P5 (posterior).


Species Onchocalanus wolfendeni - Plate 3 of morphological figuresIssued from : W. Vervoort in Zool. Verh., Leiden, 1950, 10. [p.23, Fig.9].
Female (from ± 66°S, 11°W): a, habitus (dorsal); b, idem (lateral left side); c, left P5 (posterior aspect).


Species Onchocalanus wolfendeni - Plate 4 of morphological figuresIssued from : W. Vervoort in Zool. Verh., Leiden, 1950, 10. [p.24, Fig.10].
Female (from ± 66°S, 16°W): a, posterior part of cephalothorax and urosome (dorsal); b, cephalon (lateral); c, right Mx2.

Nota: The abdominal segments and furca in the proportional lengths 45:23:16:4:12 = 100. Anal flap just visible behind margin of 3rd urosomal segment.


Species Onchocalanus wolfendeni - Plate 5 of morphological figuresIssued from : W. Vervoort in Zool. Verh., Leiden, 1950, 10. [p.25, Fig.11].
Female (from ± 66°S, 16°W): a, posterior part of cephalothorax and urosome (lateral left side); b, P1 (posterior).


Species Onchocalanus wolfendeni - Plate 6 of morphological figuresIssued from : J.M. Bradford in N.Z. Oceanogr. Inst., 1971, 206, Part 8, No 59. [p.21, Figs.72, 73].
Female (from 75°09'S, 171°00'W): 72, P5; 73, P1.
Scale bar: 100 µm.

Nota: Cephalosome without crest; a short terminal segment on P5; a slightly swollen genital segment; rounded postero-lateral thoracic borders; an increased number of spines on the posterior surface of P1

Compl. Ref.:
Hopkins, 1985 (p.197, Table 1, gut contents); Hopkins & Torres, 1988 (tab.1); Razouls & al., 2000 (p.343, tab. 2, 5, Appendix); Schnack-Schiel & al., 2008 (p.1045: Tab.2)
NZ: 2

Distribution map of Onchocalanus wolfendeni by geographical zones
Loc:
Antarct. (Croker Passage, Peninsula, SW & SE Atlant., Weddell Sea, Indien, SW & SE Pacif., Ross Sea), sub-Antarct. (SE Pacif.)
N: 10
Lg.:
(10) F: 6; (15) F: 6,75-6; M: 5,66-5,33; (31) F: 6,75; (64) F: 6,75; (102) F: 6,2; {F: 6,00-6,75; M: 5,33-5,66}
Rem.: bathypelagic.
Sampling depth (Antarct., sub-Antarct.) : 200-1000 m.
In general appearance the body resembles that of O. magnus strikingly much, but extreme tip broadly rounded (in this respect totally different from O. magnus.
Last update : 03/02/2015
    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., 2005-2024. - Biodiversity of Marine Planktonic Copepods (morphology, geographical distribution and biological data). Sorbonne University, CNRS. Available at http://copepodes.obs-banyuls.fr/en [Accessed November 21, 2024]

© copyright 2005-2024 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