Gaetanus latifrons - Fiche d'espèce - Copépodes planctoniques marins

Gaetanus latifrons Sars, 1905 (F,M)

Taxonomy

Ordre Calanoida

détails

Superfamille Clausocalanoidea

détails

Famille Aetideidae

détails

Genre Gaetanus

détails liste des espèces pour ce genre

Abréviations ou symboles

Synonymie

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)

Références

Liste des auteurs étudiés

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.)

Figures

Planche 1 issued 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 - Planche 2 of morphological figures

Planche 2 issued 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 - Planche 3 of morphological figures

Planche 3 issued 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 - Planche 4 of morphological figures

Planche 4 issued 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 - Planche 5 of morphological figures

Planche 5 Issued 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 - Planche 6 of morphological figures

Planche 6 issued 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 - Planche 7 of morphological figures

Planche 7 issued 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).

Planche 8 issued from : R.N. Wolfenden in Plankton Studies Part I. Copepoda. 1905 [Pl.III, 3]. As Gaetanus longispinus.
Female: 3, forehead (lateral).

Planche 9 Gaetanus 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.

Planche 10 Gaetanus 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.

Références complémentaires

Liste des auteurs étudiés

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);

Distribution

NZ: 14

Carte de distribution de Gaetanus latifrons par zones géographiques

Liste des espèces pour la sous-zone North Sea de la Zone 9

Distribution map of Gaetanus latifrons for the Zone Indian Ocean

Distribution map of Gaetanus latifrons and for the Zone Sub-Antarctic

Cartes et graphiques additionels

Gaetanus latifrons - Carte de distribution 4

Localisations

Glossaire géographique

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.

Citations

N: 50

Dimensions (mm)

Références de auteurs concernant les dimensions

(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}

Remarques

méso-bathypélagique.
Sampling depth (sub-Antarct.) : 0-750 m.
Tanaka & Omori (1970) considèrent Gaetanus paracurvicornis Brodsky,1950 comme synonyme junior de cette espèce, position qui n’est pas suivie par Markhaseva (1996).

Voir aussi les remarques en anglais

Dernière mise à jour : 07/12/2020