Species Card of Copepod
Cyclopoida ( Order )
    Oncaeidae ( Family )
        Oncaea ( Genus )
Oncaea ornata  Giesbrecht, 1891   (F,M)
Syn.: Oncäa ornata Giesbrecht, 1891; 1892 (p.591, 604, 774, Descr.F, figs.F);
? Oncaea mediterranea : T. Scott, 1894 b (p.117)
Ref.:
van Breemen, 1908 a (p.191); Farran, 1908 b (p.92); Rose, 1933 a (p.300, figs.F); Farran, 1936 a (p.126); Wilson, 1942 a (p.199, fig.F); Sewell, 1948 (p.393); Furuhashi, 1966 (p.315, fig.4); Owre & Foyo, 1967 (p.111, figs.F); Minoda, 1971 (p.46); Kos, 1972 (Vil. I, figs.F, Rem.); Chen & al., 1974 (p.43, figs.F); Boxshall, 1977 a (p.135, figs.F,M, Rem.); Malt, 1983 a (p.8, figs.F,M, Rem.); 1983 b (p.451, figs.F,M, Rem.); Scotto di Carlo & al., 1984 (p.1041); Chihara & Murano, 1997 (p.981, Pl.222: F,M); Lapernat, 1999 (p.36, Rem.); Heron & Frost, 2000 (p.1052, figs.F,M, tab.2, 3); Vives & Shmeleva, 2010 (p.299, figs.F,M, Rem.); Böttger-Schnack & Machida, 2011 (p.111, Table 1, 2, fig.2, DNA sequences, phylogeny)
Species Oncaea ornata - Plate 1 of morphological figuresissued from : Q.-c Chen & S.-z. Zhang & C.-s. Zhu in Studia Marina Sinica, 1974, 9. [Pl.8, Figs.3-6].
Female (from China Seas): 3, habitus (dorsal); 4, A2; 5, P3; 6, P4.


Species Oncaea ornata - Plate 2 of morphological figuresissued from : G.A. Boxshall in Bull. Br. Mus. nat. Hist. (Zool.), 1977, 31 (3). [p.136, Fig.17].
Female (from 18°N, 25°W): a, habitus 'form 1' (dorsal); b, idem 'form 2' (dorsal); c, urosome 'form 1' (dorsal); d, idem 'form 2' (dorsal); e, Md (anterior); f, Mx1 (anterior); g, Mxp 'form 1' (anterior); h, A2 (anterior); i, Mxp 'form 2 (anterior).


Species Oncaea ornata - Plate 3 of morphological figuresissued from : G.A. Boxshall in Bull. Br. Mus. nat. Hist. (Zool.), 1977, 31 (3). [p.135].
Female: Armature formula of swimming legs P1 to P4.


Species Oncaea ornata - Plate 4 of morphological figuresissued from : G.A. Boxshall in Bull. Br. Mus. nat. Hist. (Zool.), 1977, 31 (3). [p.137, Fig.18].
Female: a, P1 (posterior); b, P4 (posterior).

Male: c, urosome (ventral); d, Mxp 'form 1' (anterior); e, Mxp 'form 2' (anterior); f, A2 (anterior).


Species Oncaea ornata - Plate 5 of morphological figuresissued from : G.A. Heron & B.W. Frost in Proc. Biol. Soc. Washington, 2000, 113 (4). [p.1022, Fig.2, K].
Female: P2-P4 endopod terminal ''spine set'' (combination of the lengths, shapes, and position of the three or two terminal spines on the endopods of swimming legs 2-4 , from left to right in figure, for different Oncaea' species).

Nota: endopod of P2 with terminal spine length about twice that of subterminal spine. Endopod of P4 segment about about 3/5 the length of terminal spine and more than 2 times that of subterminal spine.


Species Oncaea ornata - Plate 6 of morphological figuresissued from : G.A. Heron & B.W. Frost in Proc. Biol. Soc. Washington, 2000, 113 (4). [p.1053, Fig.21, B-C].
Female (from NE Pacific): B, pediger 4posterior corner and urosome (dorsal; scale bar: x).

Male: C, pediger 3 posterior corner, pediger 4 and urosome (lateral (scale bar: x).


Species Oncaea ornata - Plate 7 of morphological figuresIssued from : W. Giesbrecht in Systematik und Faunistik der Pelagischen Copepoden des Golfes von Neapel und der angrenzenden Meeres-Abschnitte. – Fauna Flora Golf. Neapel, 1892, 19 , Atlas von 54 Tafeln. [Taf.47, Figs.24, 49]. As Oncäa ornata.
Female: 24, urosome (dorsal); 49, Mxp.


Species Oncaea ornata - Plate 8 of morphological figuresIssued from : W. Giesbrecht in Systematik und Faunistik der Pelagischen Copepoden des Golfes von Neapel und der angrenzenden Meeres-Abschnitte. – Fauna Flora Golf. Neapel, 1892, 19 , Atlas von 54 Tafeln. [Taf.47, Fig.20]. As Oncäa ornata.
Female: 20, A2 (anterior view)


Species Oncaea ornata - Plate 9 of morphological figuresIssued from : W. Giesbrecht in Systematik und Faunistik der Pelagischen Copepoden des Golfes von Neapel und der angrenzenden Meeres-Abschnitte. – Fauna Flora Golf. Neapel, 1892, 19 , Atlas von 54 Tafeln. [Taf.47, Fig.53]. As Oncäa ornata.
Female: 53, Mx1.


Species Oncaea ornata - Plate 10 of morphological figuresIssued from : W. Giesbrecht in Systematik und Faunistik der Pelagischen Copepoden des Golfes von Neapel und der angrenzenden Meeres-Abschnitte. – Fauna Flora Golf. Neapel, 1892, 19 , Atlas von 54 Tafeln. [Taf.44, Figs.50, 51]. As Oncäa ornata.
Female: 50, endopodite of P3.

Compl. Ref.:
C.B. Wilson, 1950 (p.272); V.N. Greze, 1963 a (tabl.2); Shmeleva, 1964 a (p.1068); Furuhashi, 1966 a (p.295, vertical distribution vs mixing Oyashio/Kuroshio region, Table 9); Boxshall, 1977 b (p.548); Deevey & Brooks, 1977 (p.156, tab.2, Station "S"); Rudyakov, 1982 (p.208, Table 2); Vives, 1982 (p.295); Kovalev & Shmeleva, 1982 (p.85); Scotto di Carlo & Ianora, 1983 (p.150); Scotto di Carlo & al., 1984 (p.1041); Greze & al., 1985 (p.8); Lozano Soldevilla & al., 1988 (p.61); Scotto di Carlo & al., 1991 (p.270); Böttger-Schnack, 1994 (p.277); Shih & Young, 1995 (p.77); Böttger-Schnack, 1997 (p.409); Suarez-Morales & Gasca, 1997 (p.1525); Hure & Krsinic, 1998 (p.86, 104, 112); Krsinic, 1998 (p.1051); Alvarez-Cadena & al., 1998 (t.1,2,3,4); Hsieh & Chiu, 1998 (tab.2); Suarez-Morales & Gasca, 1998 a (p.112); Siokou-Frangou, 1999 (p.479); Lapernat & Razouls, 2001 (tab.1); Krsinic & Grbec, 2002 (p.127, tab.1); Vukanic, 2003 (p.139, tab.1); Vukanic & Vukanic, 2004 (p.9, tab. 2); Hwang & al., 2006 (p.943, tabl. I); Morales-Ramirez & Suarez-Morales, 2008 (p.525); Böttger-Schnack & Schnack, 2009 (p.131, Table 3, 4); Licandro & Icardi, 2009 (p.17, Table 4); Nishibe & al., 2009 (p.491, Table 1: seasonal abundance); Mazzocchi & Di Capua, 2010 (p.429); Uysal & Shmeleva, 2012 (p.909, Table I) ; Lidvanov & al., 2013 (p.290, Table 2, % composition); Siokou & al., 2013 (p.1313, fig.4, 8, biomass, vertical distribution); Benedetti & al., 2016 (p.159, Table I, fig.1, functional characters); Benedetti & al., 2018 (p.1, Fig.2: ecological functional group)
NZ: 13

Distribution map of Oncaea ornata by geographical zones
Species Oncaea ornata - Distribution map 3Issued from : K. Furuhashi in Publ. Seto Mar. Biol. Lab., 1966, XIV (4). [p.316, Fig.4].
Vertical distribution of Oncaea ornata at five stations from the Oyashio region St. S1 (off E Hokkaido), transitional zone between Oyashio/Kuroshio regions: St. H12 (40°N, 152°E) and the Kuroshio region St. N1 (34.4°N, 139°E), St. S2 (34.8°N, 141°E) and St. T-1 (30°, 142°E).
Sampling by vertical haul of a closing net in May 1964.
Species Oncaea ornata - Distribution map 4Issued from : K. Furuhashi in Publ. Seto Mar. Biol. Lab., 1966, XIV (4). [p.319, Fig.7].
Vertical distribution of the water temperature at four stations from Oyashio region (SE Hokkaido) to Kuroshio region (E and SE off middle Japan).
Loc:
off Cape Verde Is., Canary Is., off Morocco-Mauritania, Azores, Caribbean, Yucatan, Caribbean Sea, G. of Mexico, off Florida, off Bermuda (Station "S"), Sargasso Sea, Newfoundland, off W Ireland, North Sea, English Channel, Ibero-moroccan Bay, Medit. (Alboran Sea, Ligurian Sea, Tyrrhenian Sea, Strait of Messina, off Malta, N & S Adriatic Sea, Ionian Sea, Aegean Sea, Lebanon Basin), ? Arabian Sea, Sulu Sea, Philippines, China Seas (East China Sea), Taiwan, Japan, Tosa Bay, Oyashio & Kuroshio regions, Bering Sea, NE Pacif., Washington inland, off Hawaii, Is. Samoa, W Costa Rica, off Galapagos, Australia (Great Barrier)
N: 53
Lg.:
(34) F: 0,85; (46) F: 1-0,9; (109) F: 0,85; (139) F: 0,93-0,76; M: 0,93-0,86; (208) F: 0,85; (340) F: 0,85-0,7; (695) F: 1,07-0,75; M: 0,79-0,68; (848) F: 0,86-1,01; M: 0,77-0,81; {F: 0,70-1,07; M: 0,68-0,93}
Rem.: Overall Depth Range in Sargasso Sea: 500-2000 m (Deevey & Brooks, 1977, Station "S"). 369-3010 m at Station T-1 (E Tori Is., E middle Japan) from Furuhashi (1966 a).
This species presents an original geographical distribution, notably by the absence of references (according to the lists of studied authors) concerning the southern Atlantic, the Indian Ocean, the southern Pacific. The authors generally agree on its profound bathymetric distribution (meso and bathypelagic).
Boxshall (1977, p.138) points to the existence of two distinguishable forms observed in both sexes. The females differed in size, body proportions, in the shape of the genital complex and in Mxp armature. The males differed only in size and in Mxp armature. Neither form of the female, however, corresponds exactly to the typical form described by Giesbrecht (1891, 1892) which appears to exhibit an intermediate condition in certain characters, such as the shape of the genital complex. The maggnitude of these differences is not enough to justify the separation of the forms into distinct species.
After Benedetti & al. (2018, p.1, Fig.2) this species belonging to the functional group 5 corresponding to small sac-spawning detritivorous.
Last update : 02/04/2020
    to add or edit your remark
  
By Ruth Böttger-Schnack 2010-03-05 19:58:36    ( Citation of this remark )
Oncaea ornata `form 2´ sensu Boxshall, 1977 was synonymized with O. englishi Heron, 1977 in a detailed study by Malt (1983b; see also Malt 1983a). Heron & Frost (2000 ) agreed with her opinion and pointed out most readily identifiable characters between the two species, which are very similar in morphology, but differ in the proportional lengths of urosomites and endopodal spine lengths on P2-P4. Thus, I wonder why the two forms of O. ornata recorded by Boxshall (1977) are still presented under the name of O. ornata here (together with the detailed remarks by Boxshall, which are out-dated), whereas in the species site of O. englishi the synonymy between O. ornata `form 2´ and O. englishi  has been included. I recommend to update the species site of O. ornata correspondingly.

By Ruth Böttger-Schnack 2010-03-05 20:00:09    ( Citation of this remark )
By looking over  the figures of O. ornata sensu Chen, Zhang & Zu (1974) given above it appears to me that - based on the form of the genital double-somite, the proportional lengths of urosomites and the relative lengths of the distal endopod spines on P3 and P4 - their species looks more similar to O. englishi Heron (which was not known at that time) than to O. ornata.

 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., 2005-2021. - Biodiversity of Marine Planktonic Copepods (morphology, geographical distribution and biological data). Sorbonne University, CNRS. Available at http://copepodes.obs-banyuls.fr/en [Accessed October 18, 2021]

© copyright 2005-2021 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