Species Card of Copepod
Cyclopoida ( Order )
    Oncaeidae ( Family )
        Oncaea ( Genus )
Oncaea clevei  Früchtl, 1923   (F,M)
Syn.: Oncaea conifera : Cleve, 1901 (p.8)
Ref.:
Früchtl, 1923 (p.455, figs.F); 1924 b (p.22, 89, figs.F); Farran, 1936 a (p.127, Rem.); Sewell, 1947 (p.258, Rem.F); Tanaka, 1960 (p.66, figs.F,M); Kos, 1972 (Vol. I, figs.F,M, Rem.); ? Chen & al., 1974 (p.42, figs.F); Zheng & al., 1982 (p.103, figs.F); Malt, 1983 b (p.450, 458); Chihara & Murano, 1997 (p.979, Pl.223: F); Bradford-Grieve & al., 1999 (p.887, 970, figs.F,M); Böttger-Schnack, 2001 (p.58, figs.F,M, Rem.); Al-Yamani & Prusova, 2003 (p.123, figs.F,M); Böttger-Schnack & al., 2004 (p.1130, tab.1, Rem.); Wi & al., 2009 (p.101, figs.F,M, Rem.); Böttger-Schnack & Schnack, 2009 (p.131, Table 5: Rem.) ; Vives & Shmeleva, 2010 (p.315, figs.F,M, Rem.); Al-Yamani & al., 2011 (p.106, figs.F,M); Böttger-Schnack & Schnack, 2013 (p.4: Table 1, Rem.: s.str-Group)
Species Oncaea clevei - Plate 1 of morphological figuresissued from : Q.-c Chen & S.-z. Zhang & C.-s. Zhu in Studia Marina Sinica, 1974, 9. [Pl.7, Figs.4-7]. Doubtful.
Female (from China Seas): 4, habitus (dorsal); 5, idem (lateral right side); 6, P3; 7, P4.


Species Oncaea clevei - Plate 2 of morphological figuresissued from : R. Böttger-Schnack in Bull. nat. Hist. Mus. Lond. (Zool.), 2001, 67 (1). [p.64, Fig.21].
Female: and Male (from Red Sea), mating position, lateral right side (appendages of female and swimming legs of male omitted.

Male: B1, B2, P2 distal part of endopod, showing variation in spine length; C, P3 distal part of endopod.

Nota Female: Proportional lengths (%) of urosomites and caudal rami 9.6 : 46.5 : 8.5 : 8.5 : 11.0 : 16.0. Anal somite 1.4 times than long; slightly shorter than caudal rami. Caudal ramus about 2.3 times as long as wide. Relative lengths (%) of segments of A1 measured along posterior non-setigerous margin 6.7 : 26.1 : 38.3 : 11.1 : 4.4 : 13.3.

Nota Male: Proportional lengths (%) of urosomites and caudal rami 11.0 : 58.9 : 3.8 :3.8: 3.8 :6.7 : 12.0. Relative lengths (%) of segments of A1 measured along posterior non-setigerous margin 10.0 : 24.1 : 38.2 : 27.6. Caudal rami about 1.8 times longer than wide.


Species Oncaea clevei - Plate 3 of morphological figuresissued from : F.Y. Al-Yamani & I. Prusova in Common Copepods Northwestern Arabian Gulf : Identification Guide. Kuwait Institute for Scientific Research, 2003. [p.122, Fig.46].
Female: A, habitus (dorsal); B, idem (lateral left side); C, urosome (dorsal); D, idem (lateral left side); E, endopod of P4 (distal part); F, A2; G, Mxp.
Nota: Prosome 1.8 times urosome. Caudal rami length about 3 times width and approximatively equal to sum of 2 preceeding somites.


Species Oncaea clevei - Plate 4 of morphological figuresissued from : F.Y. Al-Yamani & I. Prusova in Common Copepods Northwestern Arabian Gulf : Identification Guide. Kuwait Institute for Scientific Research, 2003. [p.124, Fig.47]. With doubt.
Male: H, habitus (dorsal); I, idem (lateral left side); J, urosome (dorsal); K, idem (lateral left side); ; L, A2; M, Mxp.
Nota; Prosome 1.7 times urosome. Caudal rami 1.1-1.2 times anal somite.


Species Oncaea clevei - Plate 5 of morphological figuresissued from : Z. Zheng, S. Li, S.J. Li & B. Chen in Marine planktonic copepods in Chinese waters. Shanghai Sc. Techn. Press, 1982 [p.103, Fig.61].
Female: a-b, habitus (dorsal and lateral, respectively); c, Mxp; d, P3; e, P4.


Species Oncaea clevei - Plate 6 of morphological figuresissued from : J.H. Wi, Y.H. Yoon & H.Y. Soh inOcean Sci. J., 2009, 44 (2). [p.102, Fig.5].
Female (from S Korea): A-B, habitus (dorsal and lateral, respectively); C, A1; D, A2; E, Md; ; F, Mx1; G, Mx2; H, Mxp; i, P5.
Scale bars in micrometers.


Species Oncaea clevei - Plate 7 of morphological figuresissued from : J.H. Wi, Y.H. Yoon & H.Y. Soh inOcean Sci. J., 2009, 44 (2). [p.103, Fig.6].
Female: A-D, P1 to P4, respectively.
Scale bar in micrometer.


Species Oncaea clevei - Plate 8 of morphological figuresissued from : J.H. Wi, Y.H. Yoon & H.Y. Soh inOcean Sci. J., 2009, 44 (2). [p.104, Fig.7].
Male: a-B, habitus (dorsal and lateral, respectively); C, A1 (distal segment); D, A2; E, Mxp; F, endopodite 3 of P1; G, endopodite 3 of P2; H, endopodite 3 of P3; I, endopodite 3 of P4; J, P5; K, P6 (represented by posterolateral flap closing off genital aperture on either side).
Scale bars in micrometers.


Species Oncaea clevei - Plate 9 of morphological figuresissued from : Y. Al-Yamani, V. Skryabin, A. Gubanova, S. khvorov & I. Prusova in Marine Zooplankton Practical Guide for the Northwestern Arabian Gulf, 2, 2011. [p.107, Fig.250].
Female (from Kuwait): a, habitus (dorsal); b, habitus with eggs sac (right lateral).


Species Oncaea clevei - Plate 10 of morphological figuresissued from : Y. Al-Yamani, V. Skryabin, A. Gubanova, S. khvorov & I. Prusova in Marine Zooplankton Practical Guide for the Northwestern Arabian Gulf, 2, 2011. [p.107, Fig.251].
Male (from Kuwait): a-b, habitus (dorsal and lateral, respectively).


Species Oncaea clevei - Plate 11 of morphological figuresIssued from : O. Tanaka in Spec. Publs. Seto mar. biol. Lab., 10, 1960 [Pl. XXVIII, 7-11].
Female (from 14°28'N, 115°03'E and off Cape of Good Hope): 7, habitus (dorsal); 8, posterior thoracic segments and abdomen (lateral); 9, head (lateral); 10, endopod of P3; 11, P5.

Nota: Prosome and urosome in proportional lengths 65 to 35.
The 2nd thoracic segment with a median process.
Proportional lengths of the urosomal segments and caudal rami 10 : 50 : 6 : 6 : 10 : 18 = 100


Species Oncaea clevei - Plate 12 of morphological figuresIssued from : O. Tanaka in Spec. Publs. Seto mar. biol. Lab., 10, 1960 [Pl. XXVIII, 12-13].
Male (from 14°28'N, 115°03'E): 12, last thoracic segment and abdomen (dorsal); 13, same (lateral).

Nota: Prosome and urosome in proportional lengths 65 to 35.
No median process on the dorsal of the 2nd thoraci segment.
Proportional lengths of the urosomal segments and caudal rami 12 : 62 : 5 : 2 : 3 : 7 : 9 = 100.
Genital segment 2/3 as wide as long.
Caudal ramus 1.5 times as long as broad.


Species Oncaea clevei - Plate 13 of morphological figuresIssued from : M.S. Kos in Field guide for plankton. Zool Institute USSR Acad., Vol. I, 1972. After Tanaka, 1960.
Female and male: Lengths ratio thoracic: and abdominal segments plus caudal rami (furca ) in percentage.

Compl. Ref.:
De Decker, 1964 (p.16, 23, 27); De Decker & Mombeck, 1964 (p.13); Zalkina, 1977 (p.339, tab.1); Guangshan & Honglin, 1984 (p.118, tab.); Othman & al., 1990 (p.561, 564, Table 1); Yoo, 1991 (tab.1); Böttger-Schnack, 1994 (p.277); 1995 (p.92); Shih & Young, 1995 (p.76); Böttger-Schnack, 1996 (p.1086); Ohtsuka & al., 1996 a (p.91); Noda & al., 1998 (p.55, Table 3, occurrence); Ueda & al., 2000 (tab.1); Böttger-Schnack & al., 2001 (p.1029, tab.1, 2); Uysal & al., 2002 (p.18, tab.1); Rezai & al., 2004 (p.490, tab.2, 3, abundance, Rem., p.495, tab.8); Nishibe & Ikeda, 2004 (p.931, Tab.2,5); Prusova & Smith, 2005 (p.76); Zuo & al., 2006 (p.164: tab.1); Hwang & al., 2006 (p.943, tabl. I); Hwang & al., 2007 (p.25); McKinnon al., 2008 (p.844: Tab.1); Humphrey, 2008 (p.85: Appendix A); Nishibe & al., 2009 (p.491, Table 1: seasonal abundance); Fazeli & al., 2010 (p.153, Table 1); Hsiao S.H. & al., 2011 (p.475, Appendix I); Hsiao & al., 2011 (p.317, Table 2, indicator of seasonal change); Tseng L.-C. & al., 2011 (p.47, Table 2, occurrences vs mesh sizes); Beltrao & al., 2011 (p.47, Table 1, density vs time); Selifonova, 2011 a (p.77, Table 1, alien species in Black Sea); DiBacco & al., 2012 (p.483, Table S1, ballast water transport); Johan & al., 2012 (2013) (p.1, Table 1); Gubanova & al., 2013 (in press, p.4, Table 2); 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); Ben Ltaief & al., 2017 (p.1, Table III, Summer relative abundance); Ohtsuka & Nishida, 2017 (p.565, Table 22.1);
NZ: 8

Distribution map of Oncaea clevei by geographical zones
Loc:
South Africa (E), Mediterranean Sea (G. of Gabes, Lebanon Basin, Black Sea: Novorossiysk Bay), G. of Aqaba, N-S Red Sea, Gulf of Oman, G. of Aden, Arabian Gulf (Kuwait), Madagascar (Nosy Bé), SW Indian, Straits of Malacca, Malaysia (Sarawak: Bintulu coast), Aru Is. , Sulu Sea, Viet-Nam, China Seas (Yellow Sea, East China Sea, South China Sea), Taiwan Strait, off SW Taiwan, Taiwan (E, S, Danshuei Estuary, NE), S Korea, Japan (Kuchinoerabu Is., Kyushu: Ariake Bay, Tokyo Bay, Kochi: Uranouchi Inlet, Kuroshio & Oyashio regions), Pacif. (W equatorial), Australia (Great Barrier, North West Cape, G. of Carpentaria)
N: 51
Lg.:
(11) F: 0,68; (34) F: 0,68-0,63; M: 0,55-0,53; (66) F: 0,76-0,68; M: 0,46; (109) F: 0,7-0,62; (786) F: 0,68; (819) F: 0,62-0,68; M: 0,49-0,57; (866) F: 0,64-0,74; (937) F: 0,67-0,72; ?M: 0,56-0,61; (1023) F: 0,66; (1072)* F: 0,64-0,68; M: 0,43-0,47; (1085) F: 0,65-0,75; M: 0,55-0,7; {F: 0,62-0,76; M: 0,46-0,61}
*: Body length in lateral aspect.
Rem.: epipelagic.
Uysal & al. (2002) report the species from the eastern Mediterranean for the first time (possible Lessepsian migration).
Böttger-Schnack, 2001 (p. 64) underlines the possible confusions between this species and Oncaea paraclevei, from which it can be distinguished mainly by the location of genital apertiures, the form of the genital double-somite (see remarks in O. paraclevei)
Last update : 07/12/2020
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