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Marine Planktonic Copepods
Xanthocalanus agilis  Giesbrecht, 1892   (F,M)
Taxonomy
Order Calanoida
Superfamily Clausocalanoidea
Family Phaennidae

References

Giesbrecht, 1892 (p.286, 775, figs.F,M); Giesbrecht & Schmeil, 1898 (p.50, Rem. F,M); Wolfenden, 1908 (p.33); A. Scott, 1909 (p.80, figs.F); Pesta, 1920 (p.515); Rose, 1933 a (p.133, figs.F); Owre & Foyo, 1967 (p.57, figs.F,M); Roe, 1975 (p.311, figs.M, Rem.M); Björnberg & al., 1981 (p.635, figs.F); Bradford & al., 1983 (p.71); Guangshan & Honglin, 1984 (p.136, figs.F,M); Bradford-Grieve & al., 1999 (p.881, 929, figs.F,M); Vives & Shmeleva, 2007 (p.696, figs.F,M, Rem.)

Figures

Plate 1 issued from : A. Scott in Siboga-Expedition, 1909, XIX a. [Plate XXXIII, Figs.10-18].
Female (from Molucca Passage & Celebrs Sea): 10, habitus (dorsal); 11, forehead (lateral); 12, last thoracic and genital segments (left side); 13, rostrum; 14, A1; 15, Mx2 (distal portion); 16, P2; 17, P4; 18, P5.
Plate 2 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. Atlas von 54 Tafeln. [Taf. 37 , Figs 25-29 ].
Female: 25, urosome (ventral); 26, idem (lateral); 27, forehead (ventral); 28-29, habitus (lateral and dorsal, respectively).
Plate 3 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. Atlas von 54 Tafeln. [Taf. 12, Figs.22, 23, 24, 28 ].
Female: 22, A2; 23, A1; 24, Mx2 (basipods); 28, Mx2 (terminal segments).
L = lobe; S = seta.
Plate 4 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. Atlas von 54 Tafeln. [Taf. 12, Figs.33, 34 ].
Female: 33, P5; 34, Mx1 (anterior view).
B = basipodite; Ri = endopodite; Re = exopodite; Li = inner lobe; Le = outer lobe.
Plate 5 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. Atlas von 54 Tafeln. [Taf. 37, Figs.23, 24 ].
Male: 23, habitus (dorsal); 24, urosome (dorsal).
Plate 6 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. Atlas von 54 Tafeln. [Taf. 37, Fig.22 ].
Male: 22, forehead and A1 (dorsal view).
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. Atlas von 54 Tafeln. [Taf. 12 , Figs.18, 25-27 ].
Male: 18, P5; 25, P4 (part.), posterior view; 26, P1 (anterior surface); 27, P3 (part., posterior view).
B = basipodite; Ri = endopodite; Re = exopodite
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. Atlas von 54 Tafeln. [Taf. 12, Figs.29, 30, 31 ].
Male: 29, Md; 30, Mx1; 31, P2 (part.)
Ei = endopodite; Re = exopodite; L = lobe.
Plate 9 issued from : H.S.J. Roe in Bull. British Mus. (Nat. Hist.) Zool., London, 1975, 28 (7). [p.312, Fig.9, a-d].
Male (from Cape Verde Islands): a, habitus (dorsal); b, last thoracic segment and urosome (right lateral side); c, P5; d, terminal segment of left P5.
Bar scale 0.1 mm unless indicated.

Nota: The right P5 has 5 segments very short, reaching only to the end of the 1st segment of left P5; Giesbrecht's description is probably an error concerning the lack of the right P5.
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.12, Fig.28].
Female: 28, distal segments of Mx2 (anterior view).
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.12, Figs.20, 21].
Female: 20, Mxp (anterior surface); 21, distal portion of Mxp (magnified).
Plate 12 issued from : H.B. Owre & M. Foyo in Fauna Caribaea, 1, Crustacea, 1: Copepoda. Copepods of the Florida Current. [p.25, Fig.114].
Female: P5.
Plate 13 issued from : H.B. Owre & M. Foyo in Fauna Caribaea, 1, Crustacea, 1: Copepoda. Copepods of the Florida Current. [p.57, Figs.354-356].
Female: 354, habitus (dorsal); 355, rostrum.

male: 356, P5.

Complementary References

Mazza, 1966 (p.70); Pavlova, 1966 (p.43); Deevey, 1971 (p.225); Apostolopoulou, 1972 (p.327, 350); Bainbridge, 1972 (p.61, Appendix Table II, vertical distribution %); Deevey & Brooks, 1977 (p.256, tab.2, Station "S"); Carter, 1977 (1978) (p.35); Dessier, 1979 (p.205); Kovalev & Shmeleva, 1982 (p.83); Vives, 1982 (p.291); Scotto di Carlo & al., 1984 (1044); Lozano Soldevilla & al., 1988 (p.58); Suarez & Gasca, 1991 (tab.2); Suarez, 1992 (App.1); Shih & Young, 1995 (p.71); Hure & Krsinic, 1998 (p.101); Suarez-Morales & Gasca, 1998 a (p.110); Siokou-Frangou, 1999 (p.476); Lopez-Salgado & al., 2000 (tab.1); Lapernat, 2000 (tabl.3, 4); Vukanic, 2003 (139, tab.1); Khelifi-Touhami & al., 2007 (p.327, Table 1); Mazzocchi & Di Capua, 2010 (p.427); Andersen N.G. & al., 2011 (p.71, Fig.3: abundance); Benedetti & al., 2016 (p.159, Table I, fig.1, functional characters); Belmonte, 2018 (p.273, Table I: Italian zones)

Distribution

Localisations

South Africa (E) (off Durban, Natal), Congo, off Lagos, G. of Guinea, Brazil S, Cape Verde Is., off NW Cape Verde Is., off Mauritania, Canary Is., Caribbean Sea, G. of Mexico, Florida, Sargasso Sea, off Bermuda: Station "S" (32°10'N, 64°30'W), Medit. (Algiers, Gulf of Annaba, Marseille, Ligurian Sea, Napoli, Adriatic Sea, Aegean Sea), SW Indian, Indonesia-Malaysia (in A. Scott, 1909, p.80), China Seas (East China Sea, South China Sea, in Shih & Young, 1995; W. Zhang & al., 2010), Pacif. (W equatorial) (in Guangshan & Honglin, 1984)

Quotations

N: 31

Dimensions (mm)

(5) F: 2,68; (8) M: 2,58; (32) F: 2,4; (46) F: 2,4; M: 2,4-2,25; (449) F: 2,68-2,4; M: 2,4-2,25; (952) F: 2,14; M: 2,07-2,2; {F: 2,14-2,68; M: 2,07-2,58}

Remarks

epipelagic - ?. Sargasso Sea: 0-500 m (Deevey & Brooks, 1977, station "S");
Last update : 09/12/2020

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