Species Card of Copepod
Calanoida ( Order )
    Clausocalanoidea ( Superfamily )
        Aetideidae ( Family )
            Undeuchaeta ( Genus )
Undeuchaeta major  Giesbrecht, 1888   (F,M)
Syn.: Undeuchäta major Giesbrecht, 1888; 1892 (p.227, 232, figs.F);
? Euchaeta autralis Brady, 1883 (p.65);
Undeuchaete major : With, 1915 (p.136, figs.F,M);
Chirundina angulata Sars, 1905 b (p.13);
? U. major (M) : Esterly, 1905 (p.148, figs.M);
no U. incisa Esterly, 1911 (p.319)
Ref.:
Giesbrecht & Schmeil, 1898 (p.34, Rem. F); ? Esterly, 1905 (p.148, figs.F, non M); Farran, 1908 b (p.37); A. Scott, 1909 (p.61, Rem.); Wolfenden, 1911 (p.243); With, 1915 (p.136, figs.F,M, Rem.); Sars, 1925 (p.81, figs.F,M); Farran, 1926 (p.254); 1929 (p.208, 233); Wilson, 1932 a (p.60, figs.F,M); Rose, 1933 a (p.108, figs.F,M); Jespersen, 1940 (p.26); Lysholm & al., 1945 (p.19); Sewell, 1947 (p.104); C.B. Wilson, 1950 (p.347, fig.M, juv.); Brodsky, 1950 (1967) (p.183, figs.F,M); Vervoort, 1952 h (n°49, p.3, figs.F,M); Tanaka, 1957 b (p.202, figs.F,M); Vervoort, 1957 (part., p.71, Rem.); Vervoort, 1963 b (part., p.154); Paiva, 1963 (p.38, figs.F,M); Owre & Foyo, 1967 (p.50, figs.F,M); Grice & Hulsemann, 1968 (p.329, Rem.); Tanaka & Omori, 1970 b (p.144); Bradford, 1970 a (p.354, figs.F); Morioka, 1972 a (p.314); Bradford & Jillett, 1980 (p.80, figs.F,M); Björnberg & al., 1981 (p.605, 632, fig.M); Vaupel Klein, 1984 a (p.53, 54, Rem.); Markhaseva, 1996 (p.305, figs.F,M); Chihara & Murano, 1997 (p.689, Pl.48,49: F,M); Bradford-Grieve & al., 1999 (p.880, 923, figs.F,M); Vives & Shmeleva, 2007 (p.603, figs.F,M, Rem.); Park & Ferrari, 2009 (p.143, Appendix 1)
Species Undeuchaeta major - Plate 1 of morphological figuresissued from : O. Tanaka in Publ. Seto Mar. Biol. Lab., 6 (2). [Fig.59, p.202].
Female: a, habitus (dorsal aspect); b, head (lateral aspect, left side); c, last thoracic segment (lateral aspect, left side); d, idem (lateral aspect, left side); e, genital segment (lateral aspect, right side); f, idem (ventral aspect); g, P1; h, inner margin of firdt basal joint of P4.

Male: i, head (lateral aspect, left side); j, last thoracic segment (lateral aspect, left side); k, P5.


Species Undeuchaeta major - Plate 2 of morphological figuresissued from : E.L. Markhaseva in Trudy Zool. Inst. RAN, St. Petersburg, 1996, 268. [p.306, Fig.246].
Female. genital field (specimen from NW Pacif.), other figures from NW Pacif.: Izu-Nonin Trench). Ce: forehead (lateral); P.md: mandibular palp.


Species Undeuchaeta major - Plate 3 of morphological figuresissued from : E.L. Markhaseva in Trudy Zool. Inst. RAN, St. Petersburg, 1996, 268. [p.307, Fig.247].
Male. P5(a): fifth legs (from NW Pacif: IIzu-Bonin Trench); other figures from N Atlant.). Re: exopod.


Species Undeuchaeta major - Plate 4 of morphological figuresissued from : J.M. Bradford & J.B. Jillett in Mem. N.Z. oceanogr. Inst., 86, 1980. [p.82, Fig.57].
Female: A, habitus (lateral right side); B, idem (dorsal); C, genital segment (lateral right side); D, idem (dorsal); E, inner edge of basipod 1 of P4. Nota: The teeth on basipod 1 of P4 are similar to those found in U. incisa. These teeth may not always be present as in one specimen there were two teeth on one side and one on the the other and the border was wrinkled.

Male: F, habitus (dorsal); G, forehead (lateral view); H, P5.


Species Undeuchaeta major - Plate 5 of morphological figuresissued from : J.M. Bradford in N.Z. Jl Mar. Freshw. Res., 1970, 4 (4). [p.354, Figs 20-22].
Female (off Kaikoura, New Zealand): 20, forehead with proximal segment of A1 (lateral right side); 21, genital segment (dorsal); 22, genital segment (lateral left side).
Scale bars represent 1.0 mm in 20 and 0.1 mm in 21 and 22.


Species Undeuchaeta major - Plate 6 of morphological figuresIssued from : G.O. Sars in Résult. Camp. Scient. Prince Albert I, 69, pls.1-127 (1924). [Pl.XXIII, figs.7-12].
Female: 7, habitus (dorsal); 8, idem (lateral left side); 9, forehead (lateral); 10, posterior corner cephalothorax and 1st and 2nd urosomal segments (lateral left side).

Male: 11,habitus (lateral left side); 12, P5.


Species Undeuchaeta major - Plate 7 of morphological figuresissued from : C.O. Esterly in Univ. Calif. Publs Zool., 1905, 2 (4). [p.149, Fig.16, a, e].
Female (from San Diego Region): a, habitus (lateral); e, exopodite of Mx1.
Nota: Head with median crest. Genital segment with protrusion on right side and a hooked pointed appendage at the right of the genital opening.


Species Undeuchaeta major - Plate 8 of morphological figuresissued from : C.O. Esterly in Univ. Calif. Publs Zool., 1905, 2 (4). [p.149, Fig.16, b, c, d, f]. With doubt.
Male: b, habitus (lateral); c-d, forehead (dorsal) and lateral, rsepectively); f, distal portion of left P5 (Re2, Re3 = respective segments of exopod). Body size: 6-6.5 mm.


Species Undeuchaeta major - 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.37, Fig.59].
Female: 59, habitus (lateral).


Species Undeuchaeta major - 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.37, Figs.56, 57].
Female: 56, urosome (lateral); 57, same (ventral).

Compl. Ref.:
Cleve, 1904 a (p.198); Wilson, 1942 a (p.210); Lysholm & Nordgaard, 1921 (p.17); Sewell, 1948 (p.331, 500, 512, 513, 516, 519, 525, 531, 545, 549, 566); King & Hida, 1955 (p.11); Østvedt, 1955 (p.15: Table 3), p.63; Fagetti, 1962 (p.20); Grice, 1963 a (p.495); Björnberg, 1963 (p.36, Rem.); De Decker & Mombeck, 1964 (p.14); Grice & Hulsemann, 1965 (p.223); 1967 (p.15); 1968 (tab.2); Morris, 1970 (p.2300); Park, 1970 (p.476); Roe, 1972 (p.277, tabl.1, tabl.2); 1972 a (p.340); Björnberg, 1973 (p.325, 389); Vives & al., 1975 (p.41, tab.II, III, XII); Deevey & Brooks, 1977 (p.256, tab.2, Station "S"); Carter, 1977 (1978) (p.35); Dessier, 1979 (p.205); Ponomareva & Suslyayev, 1980 (p.196, movement); Vives, 1982 (p.291); Gaudy & Boucker, 1983 (p.37, Table 1, Rem.: metabolism); Brenning, 1983 (p.5, Rem.); Guangshan & Honglin, 1984 (p.118, tab.); Tremblay & Anderson, 1984 (p.4); Roe, 1984 (p.357); Brenning, 1985 a (p.28, Table 2); Madhupratap & Haridas, 1986 (p.105, tab.1); Lozano Soldevilla & al., 1988 (p.58); Heinrich, 1990 (p.17); Suarez & al., 1990 (tab.2); Hattori, 1991 (tab.1, Appendix); Suarez & Gasca, 1991 (tab.2); Suarez, 1992 (App.1); Hays & al., 1994 (tab.1); Shih & Young, 1995 (p.67); Errhif & al., 1997 (p.423); Suarez-Morales & Gasca, 1998 a (p108); Lapernat, 2000 (tabl.3, 4); Razouls & al., 2000 (p.343, Appendix); Holmes, 2001 (p.51); Sameoto & al., 2002 (p.13); Beaugrand & al., 2002 (p.179, figs.5, 6); Yamaguchi & al., 2002 (p.1007, tab.1); Hsiao & al., 2004 (p.325, tab.1); CPR, 2004 (p.63, fig.191); Ikeda & al., 2006 (p.1791,Table 2); Dur & al., 2007 (p.197, Table IV); Gaard & al., 2008 (p.59, Table1, N Atlantic Mid-Ridge); Galbraith, 2009 (pers. comm.); Schnack-Schiel & al., 2010 (p.2064, Table 2: E Atlantic subtropical/tropical); Dias & al., 2010 (p.230, Table 1); Hsiao S.H. & al., 2011 (p.475, Appendix I)
NZ: 23

Distribution map of Undeuchaeta major by geographical zones
Loc:
Cosmopolite (tropical & tempéré); excepté Arct. et en Médit.; Antarct. (Pacif. SW), sub-Antarct. (Atlant. SW, Indien, Pacif. SE), Afr. S (E), Atlant. (tropical et tempéré), Brazil, Mer des Caraïbes, G. du Mexique, Floride, off Mauritanie-Is. du Cap Vert NW, Canaries, off Madère, Baie Ibéro-marocaine, off Cap Finisterre W, Mer des Sargasses, off Bermuda: Station "S" (32°10'N, 64°30'W), G. du Maine, off Woods Hole, off Nova Scotia E, G. du St. Laurent, Islande S, Féroe S, Irlande (W, S), off Irlande SW, Mer de Norvège, Mer du Nord, G. de Suez, Mer Arabe, Natal, Madagascar (Nosy Bé), Indien, Indien S (convergence subtropicale), Indonésie-Malaisie, mers de Chine (East China Sea, South China Sea), E, Taiwan (SW, E), Pacif. (tropical & tempéré), off Hawaii S, Fosses de Mariannes & Izu-Bonin, Japon (off Sanriku), off Hokkaido, Station Knot, Mer d'Okhotsk, Vancouver Is., ? Californie, Pacif. W (équatorial), off Australie S, Nouvelle-Zélande, Pacif. SE (tropic.), off Is. Juan Fernandez, Chili N & S
N: 96
Lg.:
(1) F: 5,1; (5) F: 6,4-4,8; (7) F: 4,92; M: 4,92; (14) F: 5,3-4,15; M: 4,25-3,9; (22) F (= M): 5,5-4,5; M (= F): 6,5-6; (37) F: 5,5-4,15; M: 4,92-3,9; (38) F: 4,8; M: 4,74-4,26; (45) F: 5,5-4,5; M: 4,9-4; (46) F: 4,5; (56) F: 4,43; M: 4,12; (73) F: 5,2-4,77; M: 4,31-4,1; (112) F: 5,2-4,2; M: 4,5-4; ? (142) F: 5,5-4,5; (199) F: 5,28-4,64; M: 4,64-4,26; (201) F: 5,25-4,5; M: 4,4-3,9; (237) F: 3,5-4,0; M: 3,0-3,5; (313) F: 4,7; 5,0; M: 4,4; (1109) M: 4,25-4,18; {F: 3,50-6,50; M: 3,00-5,50}
The lengths indicate by Brodsky, 1950 (1967) for males and females appear reversed.
Rem.: epi, meso & bathypelagic.
Sampling depth (Antarct., sub-Antarct.): 50-750-2000 m. Sargasso Sea: 500-2000 m (Deevey & Brooks, 1977, station "S");
For Vervoort (1957, p.72) the male from South Tasmania (44°35’S, 147°35’E) compared with the specimens in the ‘Siboga’ and ’Snellius’ collections shows : a distinct crest present in both females and male in the adult stage ; in the female the hooked spine on the right side of the genital opening varies considerably in length and development ; a certain amount of variability is also to be observed in the development of the postero-lateral thoracic border.In the ‘Snellius’ collection (from Indonesia : Ombai Strait) a female closely resembles the description and figures of Mesundeuchaeta asymmetrica Wolfenden (1911) ; the most striking character, according to Wolfenden, is the shape of the last thoracic somite and of the genital somite. Vervoort is of the opinion that Wolfenden’s Mesundeuchaeta asymmetrica is identical with Undeuchaeta major.
For Grice & Hulsemann (1968, p.329) the 1st basipodal segments of P4 examined in 28 females show: most of them have 2 or 3 small spines on these segments, in only 2 specimens are the spines absent.
After Ponomareva & Suslyayev (1980, p.196) the average rates of movement is 3.8-29.1 m/hr.
: R. Stephen, 2007 : Data sheets of NIO, Kochi, India (on line).
Observed off Macaé (S Brazil) by Dias & al. (2010) in Intermediate Antarctic water.
Last update : 25/02/2013
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