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Calanoida ( Order ) |
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Clausocalanoidea ( Superfamily ) |
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Clausocalanidae ( Family ) |
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Clausocalanus ( Genus ) |
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Clausocalanus laticeps Farran, 1929 (F,M) | |
| | | | | | | Syn.: | Non Clausocalanus laticeps : Tanaka, 1960 (p.32, figs.F,M) | | | | Ref.: | | | Farran, 1929 (p.208, 224, Descr.F, figs.F); Vervoort, 1951 (p.59, Rem.); 1957 (p.38, Rem.); ? Tanaka, 1964 (p.7); Frost & Fleminger, 1968 (p.42, figs.F,M, Rem.); Ramirez, 1969 (p.53, figs.F, Rem.); Heron & Bowman, 1971 (p.141, figs.F,M, juv.); Séret, 1979 (p.53, figs.F); Björnberg & al., 1981 (p.628, figs.F,M); Razouls, 1994 (p.46, figs.F,M); Bradford-Grieve, 1994 (p.116, figs.F,M, fig.101); Mazzocchi & al., 1995 (p.157, figs.F, Rem.); Bradford-Grieve & al., 1999 (p.878, 916, figs.F,M); Bucklin & al., 2003 (p.335, tab.2, fig.1, Biomol) |  issued from : B. Frost & A. Fleminger in Bull. Scripps Inst. Oceanogr. Univ. California, San Diego, 1968, 12. [Pl.24, p.148-149: Pl.25, p.150-151; Pl.26, p.152-153]. Female: 1 a, habitus (right lateral view); 1 b, idem (dorsal view); 1 a,b taken from different specimens; 2 a, Th.4-5 (posterior part) and urosome with spermatophore attached (right lateral ); 2 b, B2 of P2; 2 c-e, B2 of P3; 2 f, P5; 2 a-f taken from different specimens; 3 a-b, frontal region (right lateral); 3 c-f, rostrum (right lateral); 3 g, Th.4-5 (posteriro part) and genital segment (right lateral); 3 h, genital segment (ventral view); 3 a taken from one specimen; 3 b,g from another; 3 c,h from a third; 3 d-f from different specimens. Nota: The vaulted forehead is usually a distinctive character of C. laticeps females. Distance L between basipodal spiniform processes 2 and 3 of P3 equal to or more than 2.0 times the proximal width D of process 3 (see figure in C. lividus Pl.1, c). Caudal ramus less than1.65 times as long as wide.
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 issued from :B. Frost & A. Fleminger in Bull. Scripps Inst. Oceanogr. Univ. California, San Diego, 1968, 12. [Pl.27, p.154-155; Pl.28, p.156-157]. Male: 1 a, habitus (right lateral view); 1 b, idem (dorsal view); 1 c, urosome (armature of caudal rami incomplete) (dorsal view); 1 a-b taken from same specimen; 1 c from another; 2 a, frontal region (right lateral); 2 b, urosome4 (posterior part), urosome5 and caudal rami (armature of caudal rami incomplete) (dorsal view); 2 c-d, B2 of P2 (right and left legs of same specimen); 2 e-f, B2 of P3 (right and left legs of same specimen); 2 g, P5 (right lateral); 2 a,b taken from same specimen; 2 c-g from another. Nota: Basipodal segment 2 spiniform processes 1-3 of P3 slender and tapered uniformly from base (see figure in Clausocalanus lividus Pl.1, c). Caudal ramus more than 1.6 times as long as wide.
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 issued from : J.M. Bradford-Grieve in The Marine Fauna of New Zealand: Pelagic Calanoid Copepoda. National Institute of Water and Atmospheric Research (NIWA). New Zealand Oceanographic Institute Memoir, 102, 1994. [p.117, Fig.66]. Female: A, habitus (lateral right side); B, genital somite ( lateral right side); C, basipod 2 of P3; D, P5. Male: E, habitus (lateral right side); F, basipod 2 of P3; G, P5.
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 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.158, Fig.3.27.1]. Female (Central part of Straits of Magellan: off Cape Froward): A, habitus (dorsal); B, urosome (dorsal); C, habitus (lateral right side); D, urosome showing characteristic shape of spermatheque (lateral right side); E-G, differences in the curvature of the rostrum (lateral view). Nota: Proportional lengths of urosomites and furca 34:19:16:15:16 = 100. Points of distal segment of P5 smooth and lacking spinules.
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 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.159, Fig.3.27.2]. Female (SEM preparation): A, habitus (dorsal); B, idem (lateral right side); C, forehead with rostral filaments; D, P5: E, detail of bifid terminal points of P5 distal segment. bars: A, B 0.100 mm; C 0.010 mm; D 0.050 mm; D 0.005 mm.
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 issued from : F.C. Ramirez in Contr. Inst. Biol. mar., Buenos Aires, 1969, 98. [p.50, Lam. VIII, figs.53, 55]. Female (from off Mar del Plata): 53, habitus (lateral right side); 55, P5. Scale bars in mm: 0.1 (53); 0.2 (55).
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 issued from : B. Frost & A. Fleminger in Bull. Scripps Inst. Oceanogr. Univ. California, 1968, 12. [p.30, Table 2a]. Clausocalanus laticeps Females: Measurements and ratios *.
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 issued from : B. Frost & A. Fleminger in Bull. Scripps Inst. Oceanogr. Univ. California, 1968, 12. [p.31, Table 2b]. Clausocalanus laticeps males: Measurements and ratios *. r = sample range; m = sample mean; n = number of specimens measured; s = sample standard deviation.
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 issued from : B. Frost & A. Fleminger in Bull. Scripps Inst. Oceanogr. Univ. California, 1968, 12. [p.153, Pl.26, b, c-e, f]. Female: b, basipodite 2 of P2; c-e, basipodite 2 of P3 (from different specimens); f, P5.
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 issued from : B. Frost & A. Fleminger in Bull. Scripps Inst. Oceanogr. Univ. California, 1968, 12. [p.155, Pl.27, c]. Male: c, urosome (dorsal).
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 issued from : B. Frost & A. Fleminger in Bull. Scripps Inst. Oceanogr. Univ. California, 1968, 12. [p.157, Pl.28, c-d, e-f]. Male : c-d, basipodite 2 of P2; e-f, basipodite 2 of P3.
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 issued from : B. Frost & A. Fleminger in Bull. Scripps Inst. Oceanogr. Univ. California, 1968, 12. [p.157, Pl.28, g]. Male: g, P5 (right lateral).
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 issue from : Heron G.A. & Bowman T.E. in Biology of the Antarctic Seas IV. Antarct. Res. Ser. Washington, 1971, 17. [p.158, Figs.100-109]. Female (from Antractic area): 100, habitus (lateral; scale bar: A); 101, genital field (scale bar: D); 102, right Md (scale bar: C); 103, left Mx1 (scale bar: D); 104, right Mxp (scale bar: C); 105-108, P1 to P4 (scale bar: C); 109, P5 (scale bar: B). All scales in mm.
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 issue from : Heron G.A. & Bowman T.E. in Biology of the Antarctic Seas IV. Antarct. Res. Ser. Washington, 1971, 17. [p.158, Figs.110-115]. Male: 110, habitus (lateral; scale bar: A); 111, right Md (scale bar: C); 112, right Mx1 (scale bar: B); 113, left Mxp (scale bar: left Mxp (scale bar: C); 114, P1 (scale bar: C); 115, P5 (scale bar: C).
| | | | | Compl. Ref.: | | | Hardy & Gunther, 1935 (p.147); Senô & al., 1963 a (p.4); Björnberg, 1973 (p.311, 385); De Decker, 1984 (p.315, 343: carte); 1984 a (p.155); Zmijewska, 1987 (tab.2a); Ward, 1989 (tab.2); Atkinson & al., 1990 (tab.1); Santos & Ramirez, 1991 (p.79, 80, 82); Shih & Young, 1995 (p.72); Atkinson & Sinclair, 2000 (p.50, 51, 55); Razouls & al., 2000 (p.343, tab. 3, 5, Appendix); Chiba & al., 2001 (p.95, tab.4); Hunt & al., 2001 (p.374, tab.1); Ward & al., 2003 (p.121, tab.4: as Eucalanus laticeps: lapsus calami); Berasategui & al., 2005 (p.313, fig.2); Berasategui & al., 2005 (p.485, tab.1); Berasategui & al., 2006 (p.485: fig.2); Hunt & Hosie, 2006 (p.1203, tab.2,fig.8); Dias & Araujo, 2006 (p.41, Rem., chart); Tsujimoto & al., 2006 (p.140, Table1); Ward & al., 2008 (p.241, Tabls, Appendix II ); Takahashi & al., 2010 (p.317, Table 3, 4, figs.4, 5, 6, 7, 8); Ward & al., 2012 (p.78, Table B1); Thompson G.A. & al., 2012 (p.127, Table 2, 3) | | | | NZ: | 6 | | | | | | | | | | | |  issued from : W. Vervoort in B.A.N.Z. Antarctic Reseach Expedition, Reports - Ser. B, Vol. III, 1957 [Fig.9].
Chart showing the geographical distribution (white triangle) in the seas surrounding the Antarctic continent.
Nota: In this chart the area frequented by whaling vessels has been hatched. The Antarctic circle (66°.5 S) has been drawn as a broken line. The numbers I to VI refer to the sectors into which the Antarctic seas are divided according to Mackintosh (1942) (after Vervoort, 1951). |
 issued from : B. Frost & A. Fleminger in Bull. Scripps Inst. Oceanogr. Univ. California, San Diego, 1968, 12. [p.44, Chart 4, a].
Occurrence of C. laticeps in samples examined; closed circles represent samples examined; open circles represent samples in which adults were found; bars through open circles represent samples from which specimens were removed for measurements. |
 issued from : B. Frost & A. Fleminger in Bull. Scripps Inst. Oceanogr. Univ. California, San Diego, 1968, 12. [p.45, Chart 4, b].
Occurrence of C. laticeps in samples examined; closed circles represent samples examined; open circles represent samples in which adults were found; bars through open circles represent samples from which specimens were removed for measurements. |
 issued from : C. de O. Dias & A.V. Araujo in Atlas Zoopl. reg. central da Zona Econ. exclus. brasileira, S.L. Costa Bonecker (Edit), 2006, Série Livros 21. [p.41].
Chart of occurrence in Brazilian waters (sampling between 22°-23° S).
Nota: sampling only 2 specimens. |
| | | | Loc: | | | Antarct. (Péninsule, Drake Passage, Scotia Sea, Atlant. SW, Indien, Pacif. SW), sub-Antarct. (Géorgie du Sud N, Atlant. SW, SE, off Prince Edward W, Indien, Pacif. SW, SE), Détr. de Magellan, off S Afr. S Indian (convergence subtropicale), off Nouvelle-Zélande S, North Island SE, Chili, Atlant. SW (Malvinas current, Patagonie, Mar del Plata), Brazil (Vitoria-Cabo de Sao Tomé), Mer de Chine (East China Sea, in Shih & Young, 1995, in Zhang & al., 2010) | | | | N: | 49 | | | | Lg.: | | | (25) F: 1,65-1,43; (30) 1,67-1,25; M: 1,1-1,01; (31) F: 1,55-1,5; (35) F: 1,65-1,32; (36) F: 1,49-1,27; (246) F: 1,45-1,1; (371) F: 1,55-1,35; M: 1,3-1; {F: 1,10-1,67; M: 1,00-1,30} | | | | Rem.: | epipelagic.
Sampling depth (Antarctic, sub-Antarctic): 500-700 m.
For Vervoort (1957, p.59) the species is recognized by the curiously shaped cephalon and flattened frontal part of the head. In spite of the abundance of females at 51°11'S, 11°17'E and a prolonged search the author has not found a single adult male.
For Frost & Fleminger (1968, p.43) the possibility of confusing with C. ingens dictates that locality records of laticeps should be treated with reserve.
The presence of this species in the eastern Chinese Sea needs confirmation. | | | Last update : 25/01/2013 | |
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 Any use of this site for a publication will be mentioned with the following reference :
Razouls C., de Bovée F., Kouwenberg J. et Desreumaux N., 2005-2012. - Diversity and Geographic Distribution of Marine Planktonic Copepods. Available at http://copepodes.obs-banyuls.fr/en
[Accessed May 19, 2013] © copyright 2005-2012 CNRS, UPMC
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