Fiche d'espèce de Copépode
Cyclopoida ( Ordre )
    Corycaeidae ( Famille )
        Corycaeus ( Genre )
            Onychocorycaeus ( Sous-Genre )
Corycaeus (Onychocorycaeus) pacificus  F. Dahl, 1894   (F,M)
Syn.: Corycaeus catus : Mori, 1937 (1964) (p.135, Pl.74: figs.F,M);
C. obtusus : Farran, 1911 a (p.291);
Onychocorycaeus pacificus: Dessier, 1983 (p.89, Tableau 1, 2, Rem., %); Boxshall & Halsey, 2004 (p.494), McKinnon & al., 2008 (p.844: Tab.1); Lan Y.-C. & al., 2009 (p.1, Table 2, % vs hydrogaphic conditions); in CalCOFI regional list (MDO, Nov. 2013; M. Ohman, comm. pers.)
Ref.:
F. Dahl, 1894 (p.73); M. Dahl, 1912 (p.103, figs.F,M); Früchtl, 1924 b (p.95); Farran, 1936 a (p.139, Rem.); Dakin & Colefax, 1940 (p.113, figs.M); Sewell, 1947 (p.285, Rem.F,M); Tanaka, 1957 (p.95, figs.F,M); 1960 (p.85, figs. F); Tanaka, 1964 (p.16, figs.F,M, Rem.); Cervigon, 1964 (p.179, figs.F,M); Chen & al., 1974 (p.63, figs.F,M); Kang & al., 1990 (p.53, figs.F,M); Kim & al., 1993 (p.271); Chihara & Murano, 1997 (p.965, Pl.216, 217: F,M); Bradford-Grieve & al., 1999 (p.888, 975, figs.F,M); Al-Yamani & Prusova, 2003 (p.143, figs.F);
Espèce Corycaeus (Onychocorycaeus) pacificus - Planche 1 de figures morphologiquesissued from : Tanaka O. in Scient. Rep. Jap. Antarct. Res. Exped., 1964, (E) 22. [Pl. VIII].
Female: a, habitus (dorsal); b, last thoracic segment and urosome (left lateral side); c, A2; d, distal segment of endopod of P2; e, P5.

Male: f, habitus (dorsal); g, last thoracic segment and urosome (left lateral side); h, A2; i, Mxp.


Espèce Corycaeus (Onychocorycaeus) pacificus - Planche 2 de figures morphologiquesissued from : O. Tanaka in J. Fac. Agricult. Kyushu Univ., 1957, 11 (1). [Pl.9, Figs.13-20].
Female (from Japanese waters): 13, habitus (dorsal); 14, urosome (lateral right side); 15, A2; 16, P4; 17, terminal spine of exopod of P2.
Nota: The abdominal segments and furca in the proportional lengths 56:22:22

Male: 18, habitus (dorsal); 19, urosome (lateral right side); 20, A2.
Nota: The abdominal segments and furca in the proportional lengths 54:21:25. Genital segment oval, 1.5 times as long as wide (26:17), devoided of ventral hook. Anal segment about 2 times as long as wide (11:6), wider at the proximal. Furcal rami 8 times as long as wide (12:1.5).


Espèce Corycaeus (Onychocorycaeus) pacificus - Planche 3 de figures morphologiquesissued from : Q.-c Chen & S.-z. Zhang & C.-s. Zhu in Studia Marina Sinica, 1974, 9. [Pl.21, Figs.1-7].
Female (from China Seas): 1, habitus (dorsal); 2, A2; 3, terminal spines of exopod 3 of P2; 4, P4.

Male: 5, habitus (dorsal); 6, last portion of prosome and urosome (lateral left side); 7, A2.


Espèce Corycaeus (Onychocorycaeus) pacificus - Planche 4 de figures morphologiquesissued from : F.Y. Al-Yamani & I. Prusova in Common Copepods Northwestern Arabian Gulf : Identification Guide. Kuwait Institute for Scientific Research, 2003. [p.142, Fig.55].
Female: A, habitus (dorsal); B, idem (lateral left side); C, urosome (dorsal); D, idem (lateral left side); E, A2; F, P4.
Nota: Proportional lengths of urosomites and caudal rami 48:19:19. A2 with marginal spine of basipod 2 about 3 times shorter yhat of basipod 1.


Espèce Corycaeus (Onychocorycaeus) pacificus - Planche 5 de figures morphologiquesissued from : M. Dahl in Ergebnisse der Plankton-Expedition der Humboldt-Stiftung. Bd II, G. f1. I. Die Corycaeinen 1912. [Taf.XIV, Figs.1, 2, 3, 4].
Female: 1, habitus (dorsal); 2, idem (lateral right side); 3, idem (dorsal); 4, lateral left side).


Espèce Corycaeus (Onychocorycaeus) pacificus - Planche 6 de figures morphologiquesissued from : M. Dahl in Ergebnisse der Plankton-Expedition der Humboldt-Stiftung. Bd II, G. f1. I. Die Corycaeinen 1912. [Taf.XIV, Fig.7].
Female: 7, A2.


Espèce Corycaeus (Onychocorycaeus) pacificus - Planche 7 de figures morphologiquesissued from : M. Dahl in Ergebnisse der Plankton-Expedition der Humboldt-Stiftung. Bd II, G. f1. I. Die Corycaeinen 1912. [Taf.XIV, Figs.8, 9].
Female: 8, endopod of P2; 9, P4.


Espèce Corycaeus (Onychocorycaeus) pacificus - Planche 8 de figures morphologiquesissued from : M. Dahl in Ergebnisse der Plankton-Expedition der Humboldt-Stiftung. Bd II, G. f1. I. Die Corycaeinen 1912. [Taf.XIV, Figs.5, 6].
Male: 5, habitus (dorsal); 6, idem (lateral right side).


Espèce Corycaeus (Onychocorycaeus) pacificus - Planche 9 de figures morphologiquesissued from : M. Dahl in Ergebnisse der Plankton-Expedition der Humboldt-Stiftung. Bd II, G. f1. I. Die Corycaeinen 1912. [Taf.XIV, Fig.10].
Male: 10, A2.


Espèce Corycaeus (Onychocorycaeus) pacificus - Planche 10 de figures morphologiquesissued from : F. Cervigon iin Mem. Soc. Cienc. nat. La Salle, 1964, 24 (68). [p.182, Lam.13]. As Onychocorycaeus pacificus.
Female (from Venezuela): 1, habitus (dorsal); 2, abdomen (lateral); 3, A2; 4, P4.

Nota: Lengths prosome: 0.75-0.78; lengths urosome: 0.40-0.43. Lengths ratio genital , anal segments and caudal rami 55:22:22; 54:24:22 and 58:21:21


Espèce Corycaeus (Onychocorycaeus) pacificus - Planche 11 de figures morphologiquesissued from : F. Cervigon iin Mem. Soc. Cienc. nat. La Salle, 1964, 24 (68). [p.183, Lam.14]. As Onychocorycaeus pacificus.
Male: 1, habitus (dorsal); 2, abdomen (lateral); 3, A2; 4, P4.

Nota: Lengths prosome: 0.63-0.68; lengths urosome: 0.50-0.56. Lengths ratio genital , anal segments and caudal rami 54:22:24; 52:23:25 and 49:24:27.


Espèce Corycaeus (Onychocorycaeus) pacificus - Planche 12 de figures morphologiquesissued from : Y.S. Kang, S.-H. Huh & S.S. Lee in J. Ocanol. Soc. Korea, 1990, 25 (2). [Pl. 4, Figs.A-B].
Female (from Korean waters): A, habitus (dorsal); B, P3.

Nota: Cephalothorax 5-segmented. 3rd thoracic segment swollen large, and lateral points extended to 3/4 the genital segment. Lateral points of 4th thoracic segment very short and dull. Genital segment longer than the caudal rami. Caudal rami 4 times longer than width. Apical spine of exopod of P2 with 2 teeth on the inner anterior side. endopod of P4 with one small prominance with 1 long seta.


Espèce Corycaeus (Onychocorycaeus) pacificus - Planche 13 de figures morphologiquesissued from : Y.S. Kang, S.-H. Huh & S.S. Lee in J. Ocanol. Soc. Korea, 1990, 25 (2). [Pl. 4, Figs.C-D].
Male: C, habitus (dorsal); D, genital segment (lateral, left side).

Nota: 3rd thoracic segment fused with the 4th. Lateral points of 3rd thoracic segment shorter than 1/2 the length of the genital segment. Genital segment with an oval form. Caudal rami 7 times longer than width.


Espèce Corycaeus (Onychocorycaeus) pacificus - Planche 14 de figures morphologiquesissued from : T. Mori in The Pelagic copepoda from the neighbouring waters of Japan, 1937 (1964). [Pl. 74, Figs.1-3]. As Corycaeus catus
Female: 1, habitus (dorsal); 2, P4; 3, A2.


Espèce Corycaeus (Onychocorycaeus) pacificus - Planche 15 de figures morphologiquesissued from : T. Mori in The Pelagic copepoda from the neighbouring waters of Japan, 1937 (1964). [Pl. 74, Figs.4-7]. As Corycaeus catus.
Male: 4-5, habitus (lateral and dorsal, respectively); 6, A2.; 7, P4.


Espèce Corycaeus (Onychocorycaeus) pacificus - Planche 16 de figures morphologiquesIssued from : O. Tanaka in Spec. Publs. Seto mar. biol. Lab., 10, 1960 [Pl. XXXVII, 1-3].
Female (from Indian Ocean): 1, habitus (dorsal); 2, abdomen (dorsal); 3, same (lateral).

Nota: Cephalothorax and abdomen in the proportional lengths 68 to 32.
Lateral process of the 4th thoracic segment narrowly rounded, not sharply pointed.
Abdominal segments and caudal rami in the proportional lengths 57 : 21 : 22 = 100.
Anal segment tapers gradually toward the distal, and about as long as it is broad at the anterior border.

Characters male: Cephalothorax and abdomen in the proportional lengths 58 to 42.
Wing-like expansion of the 4th thoracic segment short, terminates into a small knob which is rounded at the apex.
Abdominal segments and caudal rami in the proportional lengths 54 : 21 : 25 = 100.
Genital segment 1.7 times as long as broad (51 : 31); ventral hook absent; cylindrical part about half the length of the posterior border of the segment (11 : 5).
Anal segment with parallell lateral margins, and about 2 times as long as it is broad at the anterior border of the segment; the posterior border of the segment where the caudal ramus articulates on each side is armed with 2 groups of spinules.
Caudal rami 8 times as long as broad.

Ref. compl.:
Wilson, 1942 a (p.182); Sewell, 1948 (p.393); C.B. Wilson, 1950 (p.195); Fagetti, 1962 (p.53); De Decker, 1964 (p.15, 21, 32); De Decker & Mombeck, 1964 (p.12); Björnberg, 1973 (p.366, 385); Guangshan & Honglin, 1984 (p.118, tab.); Renon, 1987 (tab.2); Othman & al., 1990 (p.561, 564, Table 1); Hirakawa & al., 1990 (tab.3); Yoo, 1991 (tab.1); Shih & Young, 1995 (p.76); Kotani & al., 1996 (tab.2); Go & al., 1997 (tab.1); Park & Choi, 1997 (Appendix); Hsieh & Chiu, 1998 (tab.2); Suarez-Morales & Gasca, 1998 a (p.112); Noda & al., 1998 (p.55, Table 3, occurrence); Lavaniegos & Gonzalez-Navarro, 1999 (p.239, Appx.1); Razouls & al., 2000 (p.343, Appendix); Ueda & al., 2000 (tab.1); Hsieh & al., 2004 (p.398, tab.1); Rezai & al., 2004 (p.490, tab.2); Lan & al., 2004 (p.332, tab.1); Lo & al.*, 2004 (p.218, fig.6); Lo & al., 2004 (p.89, tab.1); Hwang & al., 2006 (p.943, tabl. I); Hwang & al., 2007 (p.25); C.-Y. Lee & al., 2009 (p.151, Tab.2); Hernandez-Trujillo & al., 2010 (p.913, Table 2); Fazeli & al., 2010 (p.153, Table 1); Hsiao S.H. & al., 2011 (p.475, Appendix I); Tseng L.-C. & al., 2011 (p.47, Table 2, occurrences vs mesh sizes); Jang M.-C & al., 2012 (p.37, abundance and seasonal distribution); Tachibana & al., 2013 (p.545, Table 1, seasonal change 2006-2008); Tseng & al., 2013 (p.507, seasonal abundance); Hwang & al., 2014 (p.43, Appendix A: seasonal abundance)
NZ: 14

Carte de distribution de Corycaeus (Onychocorycaeus) pacificus par zones géographiques
Loc:
sub-Antarct. (SW Indian), South Africa (off Cape of Good Hope, E & W), Venezuela (in Legaré, 1964; Cervigon, 1964), Suez Canal, Red Sea, Gulf of Oman, G. of Aden, Arabian Sea, Arabian Gulf (Kuwait), Laccadive Sea., Maldive Is., off Zanzibar, Indian, Straits of Malacca, Is. Aru, Philippines, Viet-Nam, China Seas (Yellow Sea, East China Sea, South China Sea), Taiwan Strait, Taiwan (E, S, SW, W, NW, N, Mienhua Canyon, NE), Okinawa, S & SE Korea, Korea Strait, S Japan Sea, Japan, Kuchinoerabu Is., Tokyo Bay, Aleutian Is., Pacif. (W equatorial), Australia (Great Barrier, New South Wales, North West Cape, G. of Carpentaria), off Hawaii, Pacif. (N tropical), W Baja California (Bahia Magdalena), G. of California, Clipperton Is., N Chile
N: 64
Lg.:
(11) F: 1,108-1,067; M: 1,03-0,98; (34) F: 1,08-1,04; (66) F: 1,21-1,1; M: 1,12-1,05; (84) F: 1,12; M: 1,04; (104) M: 1,1; (107) F: 1,21-1,12; M: 1,09-0,99; (109) F: 1,17-1,07; M: 1,07; (114) F: 1,22; 1,16; M: 1,11-1,06; (666) F: 1,09; M: 0,97-0,95; (668) F: 1,22-1,16; M: 1,19-1,18; (786) F: 1,15-1,09; M: 1,08; (937) F: 1,07-1,17; {F: 1,04-1,22; M: 0,95-1,19}
Rem.: Sampling depth (sub-Antarct.) : 0-1000 m.
Pour Sewell (1947, p.286) cette forme indo-asiatique et C. ovalis, décrite par Claus,1863 en Méditerranée, ne seraient que des races géographiques de la même espèce.
Voir aussi les remarques en anglais
Dernière mise à jour : 27/06/2016

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Razouls C., de Bovée F., Kouwenberg J. et Desreumaux N., 2005-2020. - Diversité et répartition géographique chez les Copépodes planctoniques marins. Sorbonne Université, CNRS. Disponible sur http://copepodes.obs-banyuls.fr [Accédé le 27 septembre 2020]

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