Species Card of Copepod
Calanoida ( Order )
    Clausocalanoidea ( Superfamily )
        Aetideidae ( Family )
            Gaetanus ( Genus )
Gaetanus latifrons  Sars, 1905   (F,M)
Syn.: Gaetanus holti Farran, 1905 (p.33); Wolfenden, 1908 (p.31); 1911 (p.232, fig.F);
G. longispinus Wolfenden, 1905 a (p.7);
Gaetanus pileatus : Sars, 1925 (Pl.17, fig.6)
Ref.:
Sars, 1905 b (p.11, Rem.F); Farran, 1908 b (p.36, Rem.); A. Scott, 1909 (p.49, figs.F, Rem.); With, 1915 (p.108, figs.F, juv.M); Lysholm & Nordgaard, 1921 (p.14); Sars, 1925 (p.57, figs.F); Farran, 1926 (p.251); Rose, 1929 (p.18, figs. juv.M, Rem.); Sewell, 1929 (p.102); Rose, 1933 a (p.101, figs.F); Jespersen, 1940 (p.20); Lysholm & al., 1945 (p.16); Sewell, 1947 (p.58, 69, juv.); Vervoort, 1952 e (n°46, p.3, fig.F); 1957 (p.6, 61, Rem.); 1963 b (p.133, Rem.); Owre & Foyo, 1967 (p.44, fig.F); Tanaka & Omori, 1970 (p.138, figs.F, Rem.); Park, 1975 a (p.15, Descr.M, figs.M, Rem.F,M); 1978 (p.144); Bradford & Jillett, 1980 (p.51, figs.F,M, Rem., distribution chart); Markhaseva, 1980 (p.628); Baessa de Aguiar, 1987 (p.45, fig.juv.M, Rem.); Markhaseva, 1996 (p.201, figs.F,M); Vives & Shmeleva, 2007 (p.579, figs.F,M, Rem.)
Species Gaetanus latifrons - Plate 1 of morphological figuresissued from : E.L. Markhaseva in Proc. Zool. Inst. RAN, St. Petersburg, 1996, 268. [p.202, Fig.159].
Female (from SW Pacif.): CP4: coxopod of P4; Gntb Md: gnathobase of P4 (partial). Ce: forehead (from Sars, 1924)


Species Gaetanus latifrons - Plate 2 of morphological figuresissued from : T. Park in Bull. Mar. Sci., 1975, 25 (1). [p.17, Fig.3].
Male: A, B, habitus (dorsal, lateral); C, forehead (lateral); D, last metasomal and first two urosomal segments; E, A2; F, Mx1; G, Mxp; H, P1; I, P2, J, P3; K, P5 (posterior); L, last two exopodal segments of left P5 (madial). P1-P3: legs (anterior), P5: fifth legs.


Species Gaetanus latifrons - Plate 3 of morphological figuresissued from : J.M. Bradford & J.B. Jillett in Mem. N.Z. Oceanogr. Inst., 86, 1980. [p.52, Fig.33].
Female: A, habitus (lateral left side); B, basopod 1 of Mxp; C, exopod of P1; D, inner edge of basipod 1 of P4.

Male: E, habitus (lateral right side); F, P5 (r = right; l = left).


Species Gaetanus latifrons - Plate 4 of morphological figuresissued from : J.M. Bradford in N.Z. Jl Mar. Freshw. Res., 1970, 4 (4). [p.353, Figs 15-16].
Female (off Kaikoura, New Zealand): 15, forehead (lateral right side); 16, habitus (dorsal).
Scale bar represents 1.0 mm.


Species Gaetanus latifrons - Plate 5 of morphological figuresIssued from: G.O. Sars in Résult. Camp. Scient. Prince Albert I, 69, pls.1-127 (1924). [Pl.XVII, figs.7-9].
Female: 7, habitus (dorsal); 8, idem (lateral left side); 9, forehead (lateral).


Species Gaetanus latifrons - Plate 6 of morphological figuresissued from : A. Scott in Siboga-Expedition, 1909, XIX a. [Plate X, Figs.10-17].
Female (from Banda Sea): 10, habitus (dorsal); 11, forehead (lateral left side); 12, last thoracic and genital segments (left side); 13, rostrum; 14, Mxp (basal portion); 15, P1; 16, P2; 17, P4 (basal portion only).


Species Gaetanus latifrons - Plate 7 of morphological figuresissued from : R.N. Wolfenden in Die Marinen Copepoden der Deutschen Südpolar-Expedition 1901-1903, 1911. [p.233, Fig.19]. As Gaetanus holti.
Female: habitus (lateral right side).


Species Gaetanus latifrons - Plate 8 of morphological figuresissued from : R.N. Wolfenden in Plankton Studies Part I. Copepoda. 1905 [Pl.III, 3]. As Gaetanus longispinus.
Female: 3, forehead (lateral).


Species Gaetanus latifrons - Plate 9 of morphological figuresGaetanus latifrons female:
1 - Anterior part of cephalon with frontal spine.
2 - Exopodal segment 1 of A2 with 1 seta, exopodal segment 2 with 3 setae. 2nd internal lobe of Mx1 with 5 setae. Exopod of P1 with 3 external spines.
3 - Exopod of P1 clearly 3-segmented. Lateral plate of Mxp protopodite well developed.
4 - Spines of last thoracic segment curved and removed ventrally (lateral view).
5 - Frontal spine long, directed backward from rostrum in its proximal part, and curved to rostrum distally.


Species Gaetanus latifrons - Plate 10 of morphological figuresGaetanus latifrons male:
1 - Cephalon with frontal spine.
2 - Exopodal segment 3 of P5 bilobated. It is 1.5-2.2 shorter than exopodal segment 2.
3 - Spines on last thoracic segment long, exceeding the posterior border of genital segment. Exopodal segment 3 of P5 bilobated with incomplete subdivision into lobes.
4 - Endopod of left P5 significantly shorter than 1/3 of exopodal segment 1 length. Exopodal segment 3 of left P5 significantly longer than half of exopodal segment 2 length.

Compl. Ref.:
Pearson, 1906 (p.14); Wilson, 1942 a (p.187); Sewell, 1948 (p.329, 500, 520, 545, 556); C.B. Wilson, 1950 (p.231); De Decker & Mombeck, 1964 (p.12); Grice & Hulsemann, 1967 (p.15); 1968 (tab.2); Timonin, 1971 (p.281, trophic group); Roe, 1972 (p.277, tabl.1, tabl.2); Bainbridge, 1972 (p.61, Appendix Table III: occurrence); Björnberg, 1973 (p.323, 386); Deevey & Brooks, 1977 (p.256, tab.2, Station "S"); Dessier, 1979 (p.204); Vives, 1982 (p.291); Roe, 1984 (p.356); Madhupratap & Haridas, 1986 (p.105, tab.1); Heinrich, 1990 (p.17); Baessa De Aguiar, 1991 (1993) (p.101); Suarez-Morales & Gasca, 1998 a (p108); Razouls & al., 2000 (p.343, Appendix); d'Elbée, 2001(tabl. 1); Holmes, 2001 (p.49); Gaard & al., 2008 (p.59, Table 1, N Mid-Atlantic Ridge); Park & Ferrari, 2009 (p.143, Table 5, Appendix 1, biogeography);
NZ: 14

Distribution map of Gaetanus latifrons by geographical zones
Species Gaetanus latifrons - Distribution map 3
Loc:
sub-Antarct. (Indian, SW & SE Pacif.), South Africa (E), Atlant. (tropical), Angola, off E Sao Tomé Is., G. of Guinea, off Lagos, Ghana, off Morocco-Mauritania, Canary Is., off Madeira, Azores, Caribbean Sea, G. of Mexico, Florida, Sargasso Sea, off Bermuda: Station "S" (32°10'N, 64°30'W), Portugal, off W Cabo Finisterre, Bay of Biscay, Greenland, S Iceland, Faroe Is., off Ireland (S & W), off W Scotland, North Sea, Maldive Is., Laccadive Is., Indian, off Sri Lanka (E & SW), Bay of Bengal, Indonesia-Malaysia, Philippines, Japan (Izu), Tasman Sea, S Tasmania, New Zealand, Pacif. (tropical), Hawaii, Galapagos, off Peru, Pacif. (SE tropical), off Juan Fernandez Is., Chile.

Type locality: North Atlantic.
N: 50
Lg.:
(1) F: 5 ; (5) F: 5,4; (7) F: 5,1; (10) F: 4-3,75; (31) F: 5,4-4,4; M: 4; (32) F: 4,74; (38) F: 4,8; (40) F: 4,8-4,56; M: 4,24; (113) F: 4,75; 4,6; (199) F: 4,79-4,56; (201) F: 4,7-4,4; M: 3,6-3,3; (313) F: 5; {F: 3,75-5,40; M: 4,00-4,24}
Rem.: Meso-bathypelagic. Sargasso Sea: 500-1500 m (Deevey & Brooks, 1977, station "S");
Sampling depth (sub-Antarct.) : 0-750 m.
Tanaka & Omori (1970) consider Gaetanus paracurvicornis Brodsky, 1950 as a junior synonym of this species, position not followed by Markhaseva (1996).
Timonin (1971, p.282) considers the trophic interrelations in the equatorial and tropical Indian Ocean, and divides the plankters into 6 trophic groups from the litterature and the results of studies of mouth-parts structure and intestine content. This species is omnivorous.
R. Stephen: Data sheets of NIO, Kochi, India (on line).
Last update : 07/12/2020
    to add your remark
  

 Any use of this site for a publication will be mentioned with the following reference :

Razouls C., Desreumaux N., Kouwenberg J. and de Bovée F., 2005-2024. - Biodiversity of Marine Planktonic Copepods (morphology, geographical distribution and biological data). Sorbonne University, CNRS. Available at http://copepodes.obs-banyuls.fr/en [Accessed March 29, 2024]

© copyright 2005-2024 Sorbonne University, CNRS

Webmaster
CNRS   Observatoire Océanologique de Banyuls sur Mer - Laboratoire Arago
Sorbonne Université

 

Version française
English version

 

Search

On the WEB of CNRS

 


Marine Planktonic Copepods

Marine Planktonic Copepods

 

Imprimer Contact Accueil Plan du site Accès restreint Retour Une du Labo Imprimer Contact Plan du site Crédits Téléchargez les Plug-Ins