Fiche d'espèce de Copépode
Calanoida ( Ordre )
    Clausocalanoidea ( Superfamille )
        Phaennidae ( Famille )
            Cornucalanus ( Genre )
Cornucalanus indicus  Sewell, 1929   (F,M)
Sewell, 1929 (p.179, Descr.F, figs.F); 1948 (p.540); Brodsky, 1950 (1967) (p.236, figs.F, Rem.); Vervoort, 1957 (p.93, Rem.); Tanaka, 1960 a (p.122, figs. juv.F); Tanaka & Omori, 1967 (p.250); Arashkevich, 1969 (p.702, figs.F); Silas, 1972 (p.647); Brodsky & Zvereva, 1976 (p.188, Descr.M, figs.M); Tanaka & Omori, 1992 (p.258, Rem.F,M, figs.M); Chihara & Murano, 1997 (p.853, Pl.139: F); Vives & Shmeleva, 2007 (p.685, figs.F,M, Rem.)
Espèce Cornucalanus indicus - Planche 1 de figures morphologiquesissued from : O. Tanaka & M. Omori in Publ. Sero Mar. Biol. Lab., 1992, 35 (4/5). [p.259, Fig.3].
Male (from Izu region): a, forehead (lateral); b, last thoracic segments and urosome (lateral left side); c, urosome ((dorsal); d, rostrum (frontal view); e, A2; f, Md (mandibular palp); g, Md (cutting edge); h, Mx1; i, Mx2; j, Mxp; k, P1 (posterior); l, P2; m, P5; n, distal part of right P5; o, distal part of left P5.

Rostrum consist of a plate with stout rami, each of which is followed by a small projection at apex.
A1 extends to end of first urosomal segment.
Mx1 reduced: 7 setae on outer lobe; 9 on exopod, 5 on basis, 3+6 on endopod, and 4 on 3rd and 2 on 2nd inner lobe; first inner lobe large but only armed with few small setae.
Mx2 reduced: 4th and 5th lobes each armed with a large claw-like spiniform seta; endopod with 8 weak sensory filaments of which one is slender and longer than others.
Prosome/Urosome lengths ratio 77 : 23.
Cephalosome and 1st metasomal segment separated, 4th and 5th incompletely separated by a line of demarcation. Urosomal segments without spinules and caudal rami in the proportional lengths 16 : 33 : 26 : 15 : 4 : 6 = 100.
P5, the right leg 3-segmented; distal segment armed with 2 spines; left leg 5-segmented and long; 1st to 4th segments about equal in length; 5th segment short, and with 1 distal and 1 lateral spine and patches of hairs.

Espèce Cornucalanus indicus - Planche 2 de figures morphologiquesissued from : O. Tanaka & M. Omori in Publ. Sero Mar. Biol. Lab., 1992, 35 (4/5). [p.257, Fig.2].
Female (from Izu region): d, urosome and caudal rami (dorsal); e, idem (lateral left side); f, Mx1; g, h, P5.

Nota: Prosome/urosome length ratio 74 : 26.
Forehead round with no trace of cephalic spine.
Urosome covered with spinules. Proportional lengths of segments and caudal rami 50 : 25 : 15 : 2 : 8 = 100.
Lateral margin of genital complex inflated; genital tubercle prominent.
Mx1: 9 setae on outer lobe, 10 on exiopod, 5 on basis, 10 on endopod, 4 on 3rd, 2 on 2nd and 10 on 1st inner lobe.
P5 very small, 3-segmented; 2nd segment longer than the 3rd; there is a faint line of demarcation near the proximal 1/3 of 3rd segment; 3rd segment armed with a large inner terminal spine and small outer spine (although the inner terminal spine not developed well in another specimen).

Espèce Cornucalanus indicus - Planche 3 de figures morphologiquesIssued from : K.A. Brodskii in Calanoida of the Far Eastern Seas and Polar Basin of the USSR. Opred. Fauna SSSR, 1950, 35 (Israel Program for Scientific Translations, Jerusalem, 1967) [p.237, Fig.148].
Female (from NW Pacif.): habitus (dorsal and lateral right side); Mp1, Mx2; Mp2, Mxp; S1, P1; S3, P3; S5, P5.
Nota: P5 slightly asymmetrical in size and form.
A specimen from the Pacific shows the following differences in comparison with those described from the Bay of Bengal: Head less rounded, spines of Mxp larger. The Pacific form possibly represents a separate variety.

Espèce Cornucalanus indicus - Planche 4 de figures morphologiquesissued from : R.B.S. Sewell in Mem. Indian Mus., 1929, X. [p.180, Fig.66].
Female (from off SE Sri-Lanka): a, posterior thoracic margin and urosome (lateral left side); b, anal segment and furcal ramus (lateral): c, Mx2; d, Mxp; e, P2; f, P4; g, P5.

Espèce Cornucalanus indicus - Planche 5 de figures morphologiquesissued from : O. Tanaka & M. Omori in Publ. Sero Mar. Biol. Lab., 1992, 35 (4/5). [p. 260].
Male: Proportional lengths of segments of A1.

Ref. compl.:
Grice & Hulsemann, 1967 (p.16); Roe, 1972 (p.277, tabl.1, tabl.2); Vives, 1982 (p.292); Lozano Soldevilla & al., 1988 (p.58); Suarez-Morales & Gasca, 1998 a (p.110); Ikeda & al., 2006 (p.1791,Table 2); Galbraith, 2009 (pers. comm.); Homma & Yamaguchi, 2010 (p.965, Table 2); Homma & al., 2011 (p.29, Table 2, 3, abundance, feeding pattern: suspension feeders)
NZ: 6

Carte de distribution de Cornucalanus indicus par zones géographiques
Canary Is., off Morocco-Mauritania, G. of Mexico, Indian (off E Sri Lanka), Japan (Izu region, NE), Okhotsk Sea, Bering Sea, S Aleutian Basin, S Aleutian Is., off British Columbia (rare),
N: 7
(29) F: 8; (70) F: 9-8,2; (22) F: 9,24-8,8; (199) F: 7,37; (444) M: 7,65-7,3; (867) F: 8,9-9; M: 8,28; {F: 7,37-9,24; M: 7,30-8,28}
Rem.: méso-abyssopélagique.
Voir aussi les remarques en anglais
Dernière mise à jour : 02/01/2015

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

Razouls C., de Bovée F., Kouwenberg J. et Desreumaux N., 2005-2017. - Diversité et répartition géographique chez les Copépodes planctoniques marins. Disponible sur 
[Accédé le 28 mars 2017]

© copyright 2005-2017 CNRS, UPMC

Mentions légales et informations nominatives
CNRS   Observatoire Océanologique de Banyuls sur Mer - Laboratoire Arago
UPMC - Paris Universitas


Version française
English version



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