Gaetanus robustus - Fiche d'espèce - Copépodes planctoniques marins

Gaetanus robustus 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

Gaidius validus Farran, 1908 b (p.32, figs. juv.F); Rose, 1933 a (p.96, figs.juv.F); Sewell, 1948 (p.499);
Gaidius maximus Wolfenden, 1906 (p.35, figs.F);
Mesogaidius maximus Wolfenden, 1911 (p.224, figs.F) ;
Pseudogaetanus robustus Brodsky, 1950 (1967) (p.169, figs.F,M); Tanaka & Omori, 1967 (p.244); Homma & Yamaguchi, 2010 (p.965, Table 2); Homma & al., 2011 (p.29, Table 2, 3, abundance, feeding pattern: suspension feeders);
no Gaidius robustus Vervoort, 1949 (p.12, figs.F); Grice & Hulsemann, 1967 (figs.60-64: M);
Gaidius robustus : Tanaka & Omori, 1970 (p.122, figs.F, Rem.); Grice & Hulsemann, 1967 (p.24: Rem.); Park, 1975 a (p.11); Hernandez-Trujillo, 1989 a (tab.1); Bradford & Jillett, 1980 (p.58); Ref. compl.: Grice & Hulsemann, 1968 (tab.2); Björnberg, 1973 (p.323, 386); Deevey & Brooks, 1977 (p.256, Table 2, station "S"); Ikeda & al., 2006 (p.204); Ikeda & al., 2006 (p.1791, Table 2)

Références

Liste des auteurs étudiés

Sars, 1905 b (p.11, Rem.); 1925 (p.63, figs.F); 1925 (p.63, figs.F); Jespersen, 1934 (p.63, figs.F); Lysholm & al., 1945 (p.17); Sewell, 1948 (p.500); Park, 1975 a (p.13); Markhaseva & Razzhivin, 1993 (p.611); Markhaseva, 1996 (p.217, figs.F); Bradford-Grieve & al., 1999 (p.879, 922, figs.F,M)

Figures

Planche 1 issued from : E.L. Markhaseva in Proc. Zool. Inst. RAN, St. Petersburg, 1996, 268. [p.218, Fig.173].
Female (from N Atlant.). Ce: forehead (lateral); P.md: mandibular palp; Gntb Md: ganathobase (partial).

Nota: A1 reaching the end of caudal rami, or slightly shorter.

Species Gaetanus robustus - Planche 2 of morphological figures

Planche 2 issued from : E.L. Markhaseva in Proc. Zool. Inst. RAN, St. Petersburg, 1996, 268. [p.219, Fig.174].
Female. CP4: coxopod of P4 (partial).
Male: fifth legs made by K.A. Brodsky after specimen from the Pacific Ocean.

Species Gaetanus robustus - Planche 3 of morphological figures

Planche 3 Issued from : G.O. Sars in Résult. Camp. Scient. Prince Albert I, 69, pls.1-127 (1924). [Pl.XIX, figs.1-2].
Female: 1, habitus (dorsal); 2, idem (lateral left side).

Species Gaetanus robustus - Planche 4 of morphological figures

Planche 4 Issued from : K.A. Brodskii in Calanoida of the Far Eastern Seas and Polar Basin of the USSR. Opred. Fauna SSSR, 1950, 35 (Israel Program for Scientific Translations, Jerusalem, 1967) [p.170, Fig.86]. As Pseudogaetanus robustus.
Female (from NW Pacif.): ADO, last thoracic segment and urosome (dorsal); ALa (idem (lateral right side); RDo, forehead (dorsal); RLa, idem (lateral); Mp2, Mxp; S1, P1; S2, P2.

Male: S5, P5.

Species Gaetanus robustus - Planche 5 of morphological figures

Planche 5 issued from : R.N. Wolfenden in Die Marinen Copepoden der Deutschen Südpolar-Expedition 1901-1903, 1911. [p.225, Fig.13]. As Mesogaidius maximus.
Female (from off E Cape of Good Hope): a-b, habitus (dorsal and lateral, respectively).

Planche 6 issued from : G.P. Farran in Fish. Ire. Sci. Invest., 1906, II [1908]. [Pl. II, Figs.11-17]. As Gaidius validus.
Female (from 55°1'N, 10°45'W): 11, 5th thoracic segment (lateral); 12, A2; 13, Mxp; 14, Mx1 (inner lobe omitted); 15, P1; 16, P2; 17, habitus (dorsal).

Planche 7 Gaetanus robustus female:
1 - Anterior part of cephalon without frontal spine.
2 - Posterior corners of last thoracic segment with long spines.
3 - Exopodal segment 1 of A2 with 1 seta; segment 2 with 3 setae. 2nd internal lobe of Mx1 with 5 setae. Exopod of P1 3-segmented with 3 external spines.
4 - Exopodal segment 2 of A2 with 3 setae. Lateral plate of Mxp protopodite well developed.
5 - Posterior corners of last thoracic segment with large spine each, spines slightly curved dorsally. Endopodal segment 1 of Md with 2 setae; segment 2 with 9 terminal and 2 posterior setae.

Planche 8 Gaetanus robustus male:
1 - Cephalon without frontal spine.
2 - Cephalon without crest in anterior part.
3 - Exopodal segment 3 of left P5 bilobated. Body size large (≥ 7 mm).

Références complémentaires

Liste des auteurs étudiés

Suarez-Morales & Gasca, 1998 a (p.108); Holmes, 2001 (p.49); Galbraith, 2009 (pers. comm.); in CalCOFI regional list (MDO, Nov. 2013; M. Ohman, comm. pers.)

Distribution

NZ: 11 + 1 douteux

Carte de distribution de Gaetanus robustus par zones géographiques

Distribution map of Gaetanus robustus for the Zone Indian Ocean

Localisations

Glossaire géographique

off Tristan da Cunha E, off W Canary Is., Azores, Sargasso Sea, Station "S" (32°10'N, 64°30'W), Davis Strait, off W Ireland, ? W Indian, Japan (Izu,) NE, Kuril-Kamchatka, Bering Sea, S Aleutian Basin, S Aleutian Is., Vancouver Is., W Baja California , S Pacif., off Juan Fernandez Is., Chile.

Type locality: N Atlantic (off Azores Islands)

Citations

N: 25

Dimensions (mm)

Références de auteurs concernant les dimensions

(1) F: 8; (10) F: 8-7,5; (22) F: 9-7,5; M: 7; (37) F: 9,2-7,5; M: 7; (70) F: 9,1-8,4; (113) F: 9,65-8,95; {F: 7,50-9,65; M: 7,00}

Remarques

méso-abyssopélagique.
Grice & Hulsemann (1967, p.24) ne font pas état, stricto sensu, de l’identification de femelles, d’où un doute concernant la présence de cette espèce dans l’Indien.

Voir aussi les remarques en anglais

Dernière mise à jour : 05/01/2015