Fiche d'espèce de Copépode
Calanoida ( Ordre )
    Clausocalanoidea ( Superfamille )
        Aetideidae ( Famille )
            Euchirella ( Genre )
Euchirella galeatea  Giesbrecht, 1888   (F,M)
Syn.: no Euchirella galeata : Farran, 1908 b (p.37); 1920 (p.17, 21); Lysholm & Nordgaard, 1921 (p.16); Lysholm & al., 1945 (p.18, Rem.); Sewell, 1947 (p.74, figs.F)
Ref.:
Giesbrecht, 1892 (part., p.233, 244, Pl.36, fig.26, non Pl.36: fig.22); Giesbrecht & Schmeil, 1898 (p.36); Esterly, 1905 (p.155, figs.F); A. Scott, 1909 (p.55, Rem.); Wolfenden, 1911 (p.241); Farran, 1926 (p.253: Rem.); Sewell, 1929 (p.110, figs.F, juv.M, Rem.); Vervoort, 1949 (p.32, figs.F) ; C.B. Wilson, 1950 (p.221, figs.M, part. figs.F); Brodsky, 1950 (1967) (p.176, figs.F); Vervoort, 1952 f (n°47, p.3, fig.F, Rem.); Tanaka & Omori, 1969 (p.43, figs.F,M); Kos, 1972 (Vol.I, figs.F,M, Rem.); Vaupel Klein, 1972 (p.504, fig.F); 1984 a (p.38, 39, figs.F, Rem.); He & al., 1992 (p.250); Markhaseva, 1996 (p.154, figs.F,M); Chihara & Murano, 1997 (p.685, Pl.35,39: F,M); Mulyadi, 2001 (p.815, figs.F, Rem.); Mulyadi, 2004 (p.45, figs.F, Rem.);
Espèce Euchirella galeatea - Planche 1 de figures morphologiquesIssued from : W. Vervoort in Zool. Verh., Leiden, 1949, 5. [p.33, Fig.16]. Doubtful after Kos, 1972.
Female (Indo-Malaysian Seas): a, urosome (dorsal); b, forehead (lateral); c, distal part of thoracic segment and urosome (lateral left side).

Nota: A1 (24- free segments) reaches the distal margin of 3rd urosomal segment. The abdominal segments and furca in the proportional lengths 47:14:12:9:18 = 100.


Espèce Euchirella galeatea - Planche 2 de figures morphologiquesissued from : R.B.S. Sewell in Mem. Indian Mus., 1929, X. [p.111, Fig.41].
Female (from S India): a, posterior thoracic margin and urosome (dorsal); b, genital segment (lateral left side); c, Mx1; d, P1.


Espèce Euchirella galeatea - Planche 3 de figures morphologiquesissued from : J.C. von Vaupel Klein in Crustaceana, Supplt 9, Studies on Copepoda, III, 1984. [p.61, Fig.4, b].
Female: b, helmet-shaped crest on forehead (left lateral side).


Espèce Euchirella galeatea - Planche 4 de figures morphologiquesissued from : J.C. von Vaupel Klein in Crustaceana, Supplt 9, Studies on Copepoda, III, 1984. [p.63, Fig.5, j].
Female: j, setal armature of basipodite 2 of A2 (note: one short seta only).
Scale bar 0.2 mm.


Espèce Euchirella galeatea - Planche 5 de figures morphologiquesissued from : C.O. Esterly in Univ. Calif. Publs Zool., 1905, 2 (4). [p.156, Fig.22].
Female (from San Diego Region): a, habitus (lateral), with spermatophores; b, basipodite 1 of P4.
Nota: Head with high crest and rostrum. Genital segment asymmetrical, strongly protruding on the posterior portion of the dorsal surface.
Nota: The basipodite 1 of P4 about as in E. pulchra, the spines not reaching to the distal border of the segment.


Espèce Euchirella galeatea - Planche 6 de figures morphologiquesissued from : O. Tanaka & M. Omori in Publ. Seto mar. Biol. Lab., 1969, XVII, 1. [p.44, Fig.4].
Female (from Pacific): a, forehead (lateral); b, urosome (dorsal); c, last thoracic segment and urosome (left lateral).

Male: d, forehead (lateral); e, Mx1; f, Mxp (distal part of 1st basal segment); g, P1; h, left P5 (distal segment of exopod); i, idem (another view); j-k, idem (from different specimens.

Nota from Markhaseva (1996, p.154): Cephalothorax nearly 4 times longer than urosome. Crest significantly lower than in female, rostrum slightly larger. Oral parts and P1-P4 close to that in E. bitumida.


Espèce Euchirella galeatea - Planche 7 de figures morphologiquesissued from : J.C. von Vaupel Klein in Crustaceana, Supplt 9, Studies on Copepoda, III, 1984. [p.80, Fig.16, z].
Female: z, arrangement of medial spines on the posterior face of basal segment 1 of leftt P4 .
Scale bar 0.1 mm.
Nota: 1 single spine, of moderate size.


Espèce Euchirella galeatea - Planche 8 de figures morphologiquesIssued 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.36, Fig.26].
Female: 26, forehead (lateral).


Espèce Euchirella galeatea - Planche 9 de figures morphologiquesIssued 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.15, Fig.18]. With doubt ( perhaps Euchirella grandicornis).
Female: 18, basal segments of P4 (posterior view).


Espèce Euchirella galeatea - Planche 10 de figures morphologiquesIssued from : J.C. von Vaupel-Klein in Zool. Meded., Leiden, 19972, 47 (41). [p.507, Fig.3, c].
Female (from 8°34'N, 119°55'E): c, endopodite of right P1 (anterior view).

Nota: 'organ of Vaupel Klein' (see explanation to Euchirella curticauda).


Espèce Euchirella galeatea - Planche 11 de figures morphologiquesissued from : Mulyadi in Publ. by Res. Center Biol., Indonesia Inst. Sc. Bogor, 2004. [Fig.23]
Female (from 07°29'S, 121°05'E): a, habitus (dorsal); b, forehead (lateral); c, last thoracic segment and urosome with spermatophore (left lateral side); d, P4.


Espèce Euchirella galeatea - Planche 12 de figures morphologiquesissued from : E.L. Markhaseva in Proc. Zool. Inst. RAN, St. Petersburg, 1996, 268. [p.157, Fig.119].
Female (from 12°12'S, 62°53'E).


Espèce Euchirella galeatea - Planche 13 de figures morphologiquesEuchirella galeata female: 1 - Genital segment asymmetrical.
2 - Crest present.
3 - Coxopodite of P4 with 1 spine.
4 - Posterior corners of last thoracic segment symmetrical, roubed-rectangular (dorsal and lateral view).Endopodal segment 2 of A2 with 6 setae on each lobe.
5 - Crest high.
6 - Genital segment with only 1 projection on the left side (dorsal view), occupying all length of the segment. Exopodal segment 1 of A2 without projection.

Ref. compl.:
Sciacchitano, 1930 (p.13); Sewell, 1948 (p.329, 365, 520, 529, 531, 534, 539, 545, 556, 566); Chiba & al., 1957 a (p.11); Fagetti, 1962 (p.19); Grice & Hulsemann, 1967 (p.15); Fleminger, 1967 a (tabl.1); Lee & al., 1971 (p.1150); Björnberg, 1973 (p.324, 386); Guangshan & Honglin, 1984 (p.118, tab.); Rudyakov, 1986 (tab.1); Shih & Young, 1995 (p.67); Ikeda & al., 2006 (p.1791, Table 2); Dur & al., 2007 (p.197, Table IV); Fernandes, 2008 (p.465, Tabl.2); Homma & al., 2011 (p.29, Table 3, abundance, feeding pattern: suspension feeders); in CalCOFI regional list (MDO, Nov. 2013; M. Ohman, comm. pers.)
NZ: 9

Carte de distribution de Euchirella galeatea par zones géographiques
Loc:
S Atlant. (off Tristan da Cunha, off St. Helena Is.) (in Wolfenden, 1911), Laccadive Is., off Sri Lanka (E & SW), Indian, Bay of Bengal, Andaman Sea, Indonesia-Malaysia, Flores Sea, Philippines, China Seas (East China Sea, South China Sea), Taiwan (SW), Japan (Izu, NE), S Aleutian Is., Pacif. (W equatorial), Pacif. (tropical), California, off Galapagos, N Chile.

Type locality: Pacific (eastern part).
N: 29
Lg.:
(37) F: 6,7-5,2; M: 5,33-4,7; (41) F: 5,9-5,2; (47) F: 6,4; (110) F: 6,7-5,5; M: 5,25-4,7; (137) F: 5,86; M: 5,33; (142) F: 6,5; (855) F: 5,3; (1122) F: 5,3; {F: 5,20-6,70; M: 4,70-5,33}

The mean female size is 5.869 mm (n = 11; SD = 0.6116) and the mean male size is 5.062 mm (n = 5; SD = 0.3321). The size ratio (male : female) is 0.86.
Rem.: épi-mésopélagique.
La femelle peut être confondue avec E. grandicornis.
Voir aussi les remarques en anglais
Dernière mise à jour : 09/08/2019

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Razouls C., de Bovée F., Kouwenberg J. et Desreumaux N., 2005-2020. - Diversité et répartition géographique chez les Copépodes planctoniques marins. Sorbonne Université, CNRS. Disponible sur http://copepodes.obs-banyuls.fr [Accédé le 28 septembre 2020]

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