Metridia venusta - Species Card - Marine Planktonic Copepods

Metridia venusta Giesbrecht, 1889 (F,M)

Taxonomy

Order Calanoida

details

Family Metridinidae

details

Genus Metridia

details list species for this Genus

Abbreviations or symbols

Synonymy

Metridia normanni (M) Giesbrecht, 1892 (p.340, 773, figs.M); Giesbrecht & Schmeil, 1898 (p.107, Rem. F); Wolfenden, 1904 (p.125); 1911 (p.287); Wilson, 1936 c (p.91);
no Metridia venusta : I.C. Thompson, 1903 a (p.24, fig. juv.M)

References

List of the studied authors

Giesbrecht, 1892 (p.340, 346, Descr.F, figs.F); Giesbrecht & Schmeil, 1898 (p.107); Farran, 1908 b (p.60); A. Scott, 1909 (p.122, figs.F,M, Rem.); Lysholm & Nordgaard, 1921 (p.23); Sars, 1925 (p.200, figs.F,M); Farran, 1926 (p.271); Sewell, 1932 (p.263); Rose, 1933 a (p.178, figs.F,M); Farran, 1936 a (p.110); Tanaka, 1937 (p.266, figs. juv.F, Rem.); Jespersen, 1940 (p.46); Lysholm & al., 1945 (p.32); Farran, 1948 c (n°14, p.3, figs.F); Vervoort, 1957 (p.121, Rem.); Grice, 1962 (p.215, figs.F,M); Tanaka, 1963 (p.17, figs.F,M); Paiva, 1963 (p.53, figs.F); Owre & Foyo, 1967 (p.70, figs.F,M); Bradford, 1970 a (p.357, fig.M); Roe, 1984 (p.358); Chihara & Murano, 1997 (p.837, tab.6); Bradford-Grieve & al., 1999 (p.884, 948, figs.F,M); Bradford-Grieve,1999 b (p.117, figs.F,M, Rem., figs.178, 192); Vives & Shmeleva, 2007 (p.367, figs.F,M, Rem.)

Figures

Plate 1 issued from : Tanaka O. in Publs Seto Mar. Biol. Lab., 1963, XI (1). [p.17, Fig.155].
Female (juvenile): a, P5.

Male: b, last thoracic segment and urosome (dorsal); c, P5.

Plate 2 isued from : J.M. Bradford-Grieve in The Marine Fauna of New Zealand: Pelagic Calanoid Copepoda. National Institute of Water and Atmospheric Research (NIWA). NIWA Biodiversity Memoir, 111, 1999. [p.118, Fig.79].
Female (30°45'S, 173°16'E): A, urosome (dorsal); B, P5.

Male: C, urosome (dorsal); D, P5 (L = left leg; R = right leg).

Female characteristics: Forehead narrows anreriorly in dorsal view;
- Posterior metasomal corners angular.
) Caudal rami asymmetrical, left ramus longest.
- A1 shorter than the body.
- P5 with 1 free segment, asymmetrical, shorter on right, carrying 4 setae, 3 of them apical (median one longest), and 1 external.

Male characteristics: P5 asymmetrical, 3-segmented; on right segment 1 with an inner tubercle and 1 distolateral seta; segment 2 with 2 distal setae, 1 internal, 1 external; segment 3 elongate and curved with 4 flutes on inner border; left leg is shorter with last 2 segments hairy on inner border and with some simple setae. On a Southwest Pacific male the right P5 has a 3-segmented exopod with segment 2 with an outer edge spine and inner edge pointed projection; right basipod 2 with an inner-toothed process and with an outer distal plumose seta similar to those on left basipod 2 and exopod segments 1 and 2+3.

Species Metridia venusta - Plate 3 of morphological figures

Plate 3 issued from : J.M. Bradford in N.Z. Jl Mar. Freshw. Res., 1970, 4 (4). [p.357, Fig;40 ].
Male (off Kaikoura, New Zealand): 40, P5.
Scale bar represent 0.1 mm.

Species Metridia venusta - Plate 4 of morphological figures

Plate 4 Issued from : G.O. Sars in Résult. Camp. Scient. Prince Albert I, 69, pls.1-127 (1924). [Pl.LIV, figs.12-16].
Female: 12, habitus (dorsal); 13, proximal portion of A1; 14, 1st endopodal segment of P2 (and adjacent segments); 15, P5.

Male: 16, P5.

Species Metridia venusta - Plate 5 of morphological figures

Plate 5 issued from : A. Scott in Siboga-Expedition, 1909, XIX a. [Plate XXXVII, Figs.15-20].
Female (from Indonesia-Malaysia): 15, habitus (dorsal); 16, P2 (hooks on basal segment of endopodite); 17, P5.

Male: 18, habitus (dorsal); 19, P2 (hooks on basal segment of endopodite); 20, P5.

Plate 6 issued from : G.D. Grice in Fish. Bull. Fish and Wildl. Ser., 1962, 61. [p.214, Pl.20, Figs.13-17].
Female (from 00°16'N, 140°12'W): 13, habitus (dorsal); 14, P2 (3rd exopodal segment omitted); 15, P5.

Male: 16, urosome (dorsal); 17, P5.

Nota: In both sexes the left caudal ramus is longer than the right one.

Species Metridia venusta - Plate 7 of morphological figures

Plate 7 Issued 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.33, Figs.7, 29].
Female: 7, A1 (proximal segments); 29, habitus (dorsal).

Species Metridia venusta - Plate 8 of morphological figures

Plate 8 Issued 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.33, Fig.17].
Female: 17, P5.

Plate 9 Issued 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.33, Figs.1, 6]. As Metridia normani.
Male: 1, A1 (ventral view); 6, right A1 (proximal segments).

Species Metridia venusta - Plate 10 of morphological figures

Plate 10 Issued 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.33, Figs.24, 25]. As Metridia normani.
Male: 24, P5 (posterior view); 25, exopod of P3 (inner setae missing).

Species Metridia venusta - Plate 11 of morphological figures

Plate 11 Issued 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.33, Fig.30]. As Metridia normani.
Male: 30, caudal rami.

Species Metridia venusta - Plate 12 of morphological figures

Plate 12 Issued 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.32, Fig.9].
Female: 9, exopodal segment 1 of P2 (anterior view).

Species Metridia venusta - Plate 13 of morphological figures

Plate 13 Issued 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.32, Fig.12]. As Metridia normani.
Male: 12, exopodal segment of P2 (anterior view).

Species Metridia venusta - Plate 14 of morphological figures

Plate 14 Issued from : H.B. Owre & M. Foyo in Fauna Caribaea, 1, Crustacea, 1: Copepoda. Copepods of the Florida Current, 1967. [p.11, Fig.8].
Female: 8, P5.
Bsp 1 = basipodite 1 ( = Coxa)

Complementary References

List of the studied authors

Cleve, 1904 a (p.192); Pearson, 1906 (p.23, Rem.); Sewell, 1948 (p.503, 519, 547, 557); C.B. Wilson, 1950 (p.265); Grice, 1963 a (p.495); De Decker & Mombeck, 1964 (p.13); Grice & Hulsemann, 1965 (p.224); 1967 (p.17); Furuhashi, 1966 a (p.295, vertical distribution in Oyashio/Kuroshio transitional area, Table 8, 9, 10); De Decker, 1968 (p.45); Park, 1970 (p.477); Roe, 1972 (p.277, tabl.1, tabl.2); 1972 b (p.542); Björnberg, 1973 (p.338, 387); Vives & al., 1975 (p.46, tab.II, III, XII); Deevey & Brooks, 1977 (p.256, tab.2, Station "S"); Pipe & Coombs, 1980 (p.223, figs. 1, 2, table 1, vertical distribution); Vives, 1982 (p.293); Rudyakov, 1982 (p.208, Table 2); Longhurst, 1985 (tab.2); Brenning, 1985 a (p.28, Table 2); Wishner & Allison, 1986 (tab.2); Lozano Soldevilla & al., 1988 (p.59); Heinrich, 1990 (p.18); Ashjian & Wishner, 1993 (p.483, abundance, species group distributions); Shih & Young, 1995 (p.70); Lapernat, 2000 (tabl. 3, 4); Razouls & al., 2000 (p.343, Appendix); Holmes, 2001 (p.19, Rem.); Shimode & al., 2005 (p.113 + poster); Wishner & al., 2008 (p.163, Table 2, fig.8, oxycline); Gaard & al., 2008 (p.59, Table 1, N Mid-Atlantic Ridge); Park & Ferrari, 2009 (p.143, Table 5, Appendix 1, biogeography); Medellin-Mora & Navas S., 2010 (p.265, Tab. 2); Hirai & al., 2013 (p.1, Table I, molecular marker); El Arraj & al., 2017 (p.272, table 2); Hirai & al., 2020 (p.1, Fig. 5: cluster analysis (OTU), spatial distribution).

Distribution

NZ: 15

Distribution map of Metridia venusta by geographical zones

List species for the subzone North Sea of the Zone 9

Distribution map of Metridia venusta for the Zone Indian Ocean

Distribution map of Metridia venusta for the Zone China Seas, Vietnam

Distribution map of Metridia venusta and for the Zone Sub-Antarctic

Additional Maps & Charts

Species Metridia venusta - Distribution map 5

Map 5 Issued from : P.-E. Lapernat in DEA Océanogr. Biol., Univ. P. & M. Curie, Paris VI. July 5, 2000. [Fig.9 f].
Verical distribution of Metridia venusta at an eutrophic site (off Mauritanian coast: 20°32 'N, 18°36' W) in females (F) and males (M) (ind. per m3) in the day (white circle) and night (black circle).

Nota: Sampling in the water column 0-1000 m, one during the day and another during the night with BIONESS multiple-net: 0-75; 75-150; 150-250; 250-350; 350-450; 450-550; 550-700; 700-850; 850-965 m. in May-June 1992.

Localisations

Geographical glossary

sub-Antarct. (Indian), South Africa (E & W), Cape Verde Is., off Mauritania - NW Cape Verde, off Morocco-Mauritania, Canary Is., off Madeira, Azores, off Portugal, Ibero-moroccan Bay, off W Cape Finisterre, Bay of Biscay, W Ireland, Iceland, Wyville Thomson Ridge (60°N), Faroe Is., North Sea, Barbados Is., Caribbean Sea, Caribbean Colombia, G. of Mexico, Florida, Sargasso Sea, off Bermuda: Station ‘S’(32°10’N, 64°30’W), off Cape Hatteras, Indian Ocean, Arabian Sea, Indonesia-Malaysia, Philippines, China Seas (East China Sea, South China Sea), Japan (Izu region), SE Japan, Kuroshio zone, Australia (Great Barrier), New Zealand (Kaikoura, SE South Island, off N North Island), Tasman Sea, Kermadec Is., S Tasmania, Pacif. (equatorial), off Galapagos, off W Guatemala, W Ecuador, off NE Easter Is., Pacif. (SE tropical), Chile (N & S)

Quotations

N: 63

Dimensions (mm)

References of the authors concerning dimensions

(1) F: 2,9; (5) F: 3,1; M: 2,8; (26) M: 2,82; (34) F: 3,05-2,65; (38) F: 2,9-2,82; M: 2,64-2,59; (46) M: 2,65; (73) F: 3,15-2,72; (101) M: 2,82; (199) F: 3,04-2,66; M: 2,66-2,43; (313) M: 2,8; 2,6; (909) F: 2,7-3; M: 2,6; {F: 2,65-3,15; M: 2,43-2,82}

The mean female size is 2.891 mm (n = 12; SD = 0.1790), and the mean male size is 2.674 mm (n = 11; SD = 0.1240). The size ratio (male : female) is 0.91 (n = 4; SD = 0.6090).

Remarks

meso-bathypelagic. Sargasso Sea: 500-2000 m (Deevey & Brooks, 1977, Station "S") . 204-457 m at Station S 2 in South Bösö (E middle Japan). 530-580 m (Pipe & Coombs, 1980, in Arctic)

Last update : 25/10/2022

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