Oncaea englishi - Species Card - Marine Planktonic Copepods

Oncaea englishi Heron, 1977 (F,M)

Taxonomy

Order Cyclopoida

details

Family Oncaeidae

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Genus Oncaea

details list species for this Genus

Abbreviations or symbols

Synonymy

Oncaea ornata 'Form 2' Boxshall, 1977 a (p.135, figs.17 b,d,i, 18 e)

References

List of the studied authors

Heron, 1977 (p.79, figs.F,M); Gardner & Szabo, 1982 (p.118, figs.F,M); Malt, 1982 (p.193); 1983 a (p.8, figs.F,M, Rem.); 1983 b (p.451, figs.F,M, Rem.); Heron & al., 1984 (p.461, 465, 478, Rem.); Hopkins & al., 1993 (p.96); Heron & Bradford-Grieve, 1995 (p.44, figs.F,M); Mazzocchi & al., 1995 (p.241, figs.F,M, Rem.); Bradford-Grieve & al., 1999 (p.887, 970, figs.F,M); Heron & Frost, 2000 (p.1054, figs.F,M, tab.2, 3); Vives & Shmeleva, 2010 (p.282, figs.F,M, Rem.)

Figures

Plate 1 Issued from: M.G. Mazzocchi, G. Zagami, A. Ianora, L. Guglielmo & J. Hure in Atlas of Marine Zooplankton Straits of Magellan. Copepods. L. Guglielmo & A. Ianora (Eds.), 1995. [p.242, Fig.3.45.1].
Female: A, habitus (dorsal); B, idem (lateral left side); C, urosome (dorsal); D, A2; E, Md; F, P4.
Nota: Prosome about 1.7 times as long as urosome. Proportional lengths of urosomites and furca 11:53:9:7:9:11 = 100. Anal somite with patch of spinules on dorsal distal side. Caudal ramus with very small spinules on dorsal side.

Male: G, habitus (dorsal); H, urosome (dorsal); I, idem (lateral right side); J, P1; K, Mxp.
Nota: Proportional lengths of urosomites and furca 8:61:4:4:4:9:10 = 100. Anal somite and caudal rami with spinules.

Species Oncaea englishi - Plate 2 of morphological figures

Plate 2 Issued from: M.G. Mazzocchi, G. Zagami, A. Ianora, L. Guglielmo & J. Hure in Atlas of Marine Zooplankton Straits of Magellan. Copepods. L. Guglielmo & A. Ianora (Eds.), 1995. [p.243, Fig.3.45.2].
Female (SEM preparation): A, habitus (dorsal); B, urosome (dorsal); C, urosome (dorsal) bearing one or two ovigerous sacs; D, pair of spermatophores attached to genital pores on dorsal side of genital somite; E, P5 (arrow)
Bars: A 0.1 mm; B 0.050 mm; C 0.010; E 0.005 mm.

Species Oncaea englishi - Plate 3 of morphological figures

Plate 3 Issued from: M.G. Mazzocchi, G. Zagami, A. Ianora, L. Guglielmo & J. Hure in Atlas of Marine Zooplankton Straits of Magellan. Copepods. L. Guglielmo & A. Ianora (Eds.), 1995. [p.244, Fig.3.45.3].
Female (SEM preparation): A, forehead (dorsal); B, idem (ventral); C, Md; D, Mxp; E, anal somite and caudal rami (dorsal).
Bars: A, D 0.050 mm; B, C, E 0.010 mm.

Species Oncaea englishi - Plate 4 of morphological figures

Plate 4 issued from : G.A. Heron & B.W. Frost in Proc. Biol. Soc. Washington, 2000, 113 (4). [p.1053, Fig.21, D-E].
Female (from NE Pacific): D, pediger 4 posterior corner and urosome (dorsal; scale bar: x).

Male: E, pediger 3 posterior corner,pediger 4 and urosome (lateral; scale bar: x).
Scale bars: 0.1 mm, see figures 3, 4, 5, 10 of Heron and Frost, 2000 for Oncaea canadensis and Oncaea insolita.

Species Oncaea englishi - Plate 5 of morphological figures

Plate 5 issued from : G.A. Heron & B.W. Frost in Proc. Biol. Soc. Washington, 2000, 113 (4). [p.1022, Fig.2, L].
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 more than 3 times that of subterminal spine. Endopod of P4segment length about 2/3 that of terminal spine and about twice that of subterminal spine.

Species Oncaea englishi - Plate 6 of morphological figures

Plate 6 issued from : G.A. Heron in Antarct. Res. Ser. Washington, 1977, 26. [p.80, Fig.25, n-o].
Female: n, habitus (lateral; scale bar: X); o, urosome (scale bar: Y).

Species Oncaea englishi - Plate 7 of morphological figures

Plate 7 issued from : G.A. Heron in Antarct. Res. Ser. Washington, 1977, 26. [p.81, Fig.26].
Female: a, left A1 (scale bar: Y); b, right A2 (scale bar: Y); c, oral area (scale bar: Y); d, labrum (scale bar: Z); e, right Md (scale bar: Z); f, left Mx1 (scale bar: Z); g, left Mx2 (scale bar: Z); h, right Mxp (scale bar: Y).

Species Oncaea englishi - Plate 8 of morphological figures

Plate 8 issued from : G.A. Heron in Antarct. Res. Ser. Washington, 1977, 26. [p.83, Fig.27].
Female: a-d, P1 to P4 (scale bar: Y); e, P5 (scale bar: Z).

Male: f, habitus (lateral; scale bar: X), g, posterior of last prosomal segment and urosome (lateral; scale bar: Y); h, urosome (dorsal; scale bar: Y); i, left Mxp (scale bar: Y); j, endopod of P1 (scale bar: Y); k, P5 (scale bar: Z).

Dimorphic Male: l, left Mxp (scale bar: Y).

Plate 9 issued from : G.A. Heron in Antarct. Res. Ser. Washington, 1977, 26. [p.79].
Nota: Swimming legs P2-P4 female with segmentation similar to that of Oncaea antarctica, but armature of terminal segment of endopods differs.
Swimming legs male as in female except for modification of terminal armature of 3rd segment of 1st endopod.

Complementary References

List of the studied authors

Hopkins & Torres, 1988 (tab.1); Metz, 1995 (p.190); Lapernat, 1999 (p.35); Razouls & al., 2000 (p.343, tab. 5, Appendix); Lapernat & Razouls, 2001 (tab.1); Nishibe & Ikeda, 2004 (p.931, Tab. 2, 5); Bielecka & Zmijewska, 2005 (p.96); Khelifi-Touhami & al., 2007 (p.327, Table 1); Galbraith, 2009 (pers. comm.); Nishibe & al., 2009 (p.491, Table 1: seasonal abundance); Böttger-Schnack & Schnack, 2009 (p.131, Table 3)

Distribution

NZ: 10

Distribution map of Oncaea englishi by geographical zones

List species for the subzone North Sea of the Zone 9

Distribution map of Oncaea englishi for the Zone Mediterranean Sea, Black Sea

Distribution map of Oncaea englishi for the Zone Antarctic and for the Zone Sub-Antarctic

Additional Maps & Charts

Species Oncaea englishi - Distribution map 4

Map 4 issued from : G.A. Heron & B.W. Frost in Proc. Biol. Soc. Washington, 2000, 113 (4). [p.1060, Fig.24].
Locality records for selected species of Oncaea.
Records include previously published personal observations and data presented in this study (p.1023, Table 3)

Localisations

Geographical glossary

Antarctic (SW Pacif., Scotia Sea, Weddell Sea), sub-Antarct. (SW Pacif.), Straits of Magellan, Norwegian Sea, North Sea, Medit. (Gulf of Annaba, S Balearic Basin, Adriatic Sea in Malt, 1983 a, b; off Malta in Lapernat, 1999; Ionian Sea, Lebanon Basin), off N New Zealand, Japan (Tosa Bay, Oyashio region), NE Pacif., Station "P", off British Columbia, Washington inland, Arctic

Quotations

N: 15

Dimensions (mm)

References of the authors concerning dimensions

(36) F: 0,78-0,88; M: 0,76; (340) F: 0,8; (675) F: 1,04-0,96; M: 0,96-0,8; (679) F: 1,15-0,95; M: 1-0,85; (695) F: 0,93-0,84; M: 0,83; (848) F: 0,85-1,04; M: 0,76-0,85; {F: 0,78-1,15; M: 0,76-1,00}

Remarks

epi- bathypelagic. (off Malte: 3000 m).
Sampling depth (Antarct., sub-Antarct.) : 0-1000-2000 m.
For Heron & al. (1984, p.479), the species resembles Oncaea ornata, but may be distinguished by differences in the relative lengths of the female urosome segments, the terminal endopod segments, and the spines of P2 and P4.

Last update : 27/01/2016

Contributor Remarks

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By Ruth Böttger-Schnack 2010-03-06 11:46:29 ( Citation of this remark )

According to Malt (1983b), who synonymized Oncaea ornata `form2Â´ sensu Boxshall, 1977 with O. englishi Heron, 1977, the species is also distributed in the NE Atlantic (Cape Verde Islands, Canary Islands, and at 40Â°N, 20Â°W), corresponding to your region 8 in the distribution map above.