Species Card of Copepod
Cyclopoida ( Order )
    Corycaeidae ( Family )
        Corycaeus ( Genus )
            Ditrichocorycaeus ( Sub-Genus )
Corycaeus (Ditrichocorycaeus) subtilis  M. Dahl, 1912   (F,M)
Syn.: Ditrichocorycaeus subtilis : Boxshall & Halsey, 2004 (p.494); McKinnon & al., 2008 (p.843: Tab.1); Vives & Shmeleva, 2010 (p.220, figs.F,M, Rem.)
Ref.:
M. Dahl, 1912 (p.80, figs.F,M); Früchtl, 1924 b (p.101); Sewell, 1933 (p.30); Farran, 1936 a (p.138); Tanaka, 1957 (p.88, figs.F); 1960 (p.82, figs.F,M); Chen & al., 1974 (p.59, figs.F); Boxshall & Halsey, 2004 (p.494)
Species Corycaeus (Ditrichocorycaeus) subtilis - Plate 1 of morphological figuresissued from : O. Tanaka in J. Fac. Agricult. Kyushu Univ., 1957, 11 (1). [Pl.7, Figs.1-4].
Female (from Japanese waters): 1, habitus (lateral right side); 2, urosome (dorsal); 3, A2; 4, apical spine of exopod of P2.
Nota: The abdominal segments and furca in the proportional lengths 44:26:30. Wing-like expansions of 3rd thoracic segment not extending to the middle of genital segment. Processes of posterior corners of 4th thoracic segment very small.


Species Corycaeus (Ditrichocorycaeus) subtilis - Plate 2 of morphological figuresissued from : Q.-c Chen & S.-z. Zhang & C.-s. Zhu in Studia Marina Sinica, 1974, 9. [Pl.18, Figs.8-12].
Female (from China Seas): 8, habitus (dorsal); 9, idem (lateral left side); 10, A2; 11, terminal spines of exopod of P2; 12, P4.


Species Corycaeus (Ditrichocorycaeus) subtilis - Plate 3 of morphological figuresissued from : M. Dahl in Ergebnisse der Plankton-Expedition der Humboldt-Stiftung. Bd II, G. f1. I. Die Corycaeinen 1912. [Taf.VIII, Figs.8a, 9, 10].
Female: 8a, habitus (dorsal); 9, urosome (dorsal); 10, habitus (lateral left side).


Species Corycaeus (Ditrichocorycaeus) subtilis - Plate 4 of morphological figuresissued from : M. Dahl in Ergebnisse der Plankton-Expedition der Humboldt-Stiftung. Bd II, G. f1. I. Die Corycaeinen 1912. [Taf.VIII, Fig.13].
Female: 13, A2.


Species Corycaeus (Ditrichocorycaeus) subtilis - Plate 5 of morphological figuresissued from : M. Dahl in Ergebnisse der Plankton-Expedition der Humboldt-Stiftung. Bd II, G. f1. I. Die Corycaeinen 1912. [Taf.VIII, Figs.14, 16].
Female: 14, P2 (distal part ofexopod 3); 16, P4.


Species Corycaeus (Ditrichocorycaeus) subtilis - Plate 6 of morphological figuresissued from : M. Dahl in Ergebnisse der Plankton-Expedition der Humboldt-Stiftung. Bd II, G. f1. I. Die Corycaeinen 1912. [Taf.VIII, Figs.11, 12, 15].
Male: 11, habitus (dorsal); 12, idem (latral right side); 15, A2.


Species Corycaeus (Ditrichocorycaeus) subtilis - Plate 7 of morphological figures[B & H] Female: Small species. Caudal ramus just longer than anal somite. Ventral hook of genital double-somite weak; produced ventral margin of genital double-somite almost rectangular in lateral view.
Male: Genital somite only as long as anal somite and caudal rami combined.

[V & S] Female: Posterior points of thoracic segment 3, in dorsal view, scarcely reacing half genital segment. Spine of basipodite 2 of A2 less than half of spine of basipodite 1.
Male: Posterior points of thoracic segment 3, in dorsal view, shorter than 2/3 genital segment. Genital segment length scarcely shorter than caudal rami. Genital segment 1.5 times longer than caudal rami.

Compl. Ref.:
Sewell, 1948 (p.420); C.B. Wilson, 1950 (p.196); De Decker, 1964 (p.15, 21, 27); Kovalev & Shmeleva, 1982 (p.86); Greze & al., 1985 (p.8); Othman & al., 1990 (p.561, 564, Table 1); Kimmerer, 1993 (tab.2); Shih & Young, 1995 (p.76); Hsieh & Chiu, 1998 (tab.2); Hsieh & al., 2004 (p.398, tab.1); Rezai & al., 2004 (p.490, tab.2); Lo & al., 2004 (p.89, tab.1); McKinnon & al., 2008 (p.848: Tab. IV)
NZ: 9

Distribution map of Corycaeus (Ditrichocorycaeus) subtilis by geographical zones
Loc:
Afr. S (SE), Médit. (Mer d'Alboran), Zanzibar, Madagascar (Nosy Bé), Malaisie (Kurau Riv.), Straits of Malacca, Is. Aru, Arch. Bismarck, mers de Chine (East China Sea, South China Sea), Taiwan, Mienhua Canyon, Japon (très rare), Hawaii, Californie (Tomales Bay), Australia (Grande Barrière, North West Cape, G. of Carpentaria)
N: 22
Lg.:
(34) F: 0,82-0,72; (66) F: 0,79-0,765; M: 0,7; (107) F: 0,76; (109) F: 0,8-0,72; (666) F: 0,77-0,75; M: 0,7-0,68; (786) M: 0,82; {F: 0,72-0,82; M: 0,68-0,82}
Rem.: Epiplanktonic. For Boxshall & Halsey (2004, p.491) the subgenus (Dahl, 1912) is considered as full generic status pending phylogenetic revision of the whole family at the generic level.
Last update : 07/08/2012
    to add your remark
  

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

Razouls C., de Bovée F., Kouwenberg J. et Desreumaux N., 2005-2012. - Diversity and Geographic Distribution of Marine Planktonic Copepods. Available at http://copepodes.obs-banyuls.fr/en 
[Accessed May 19, 2013]

© copyright 2005-2012 CNRS, UPMC

Webmaster
CNRS   Observatoire Océanologique de Banyuls sur Mer - Laboratoire Arago
UPMC - Paris Universitas

 

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