Fiche d'espèce de Copépode
Calanoida ( Ordre )
    Clausocalanoidea ( Superfamille )
        Aetideidae ( Famille )
            Euchirella ( Genre )
Euchirella rostromagna  Wolfenden, 1911   (F,M)
Syn.: Euchirella rostrata magna Wolfenden, 1905 a (p.18);
E. plumosa Brady, 1918 (p.20)
Ref.:
Wolfenden, 1911 (p.235, Rem.); Farran, 1929 (p.208, 236, figs.F,M); Sewell, 1929 (p.107); Vervoort, 1951 (p.82, figs.F, Rem.); 1957 (p.63, Rem.); 1963 b (p.135); Vaupel Klein, 1972 (p.502, 505, fig.F); Björnberg, 1973 (p.380, 386); Park, 1978 (part., p.151, figs.F, no fig.31f); Séret, 1979 (p.79, 84, figs.F); Bradford & Jillett, 1980 (p.40, , figs.F,M); Björnberg & al., 1981 (p.605, 632, figs.F); Vaupel Klein, 1984 a (p.44, fig.F, Rem.); Razouls, 1994 (p.78, figs.F,M); Markhaseva, 1996 (p.145, Rem.); Vaupel Klein, 1998 a (p.386: Table 2, fig.F, fig.5); Park & Ferrari, 2009 (p.143, Appendix 1)
Espèce Euchirella rostromagna - Planche 1 de figures morphologiquesissued from : Park T.-S. in Antarct. Res. Ser. Washington, 1978, 27: 91-290. As Euchaeta rasa.
Female: 1, 2, habitus (dorsal, lateral); 3, Head (lateral); 4, Urosome (lateral); 5, genital segment (ventral).
Male: 6, 7, (dorsal, lateral); 8, Head (lateral); 9, P5 (G: left, Dt: right); 10, distal exopodite of left P5.


Espèce Euchirella rostromagna - Planche 2 de figures morphologiquesissued from : G.P. Farran in British Antarctic (\"Terra Nova\") Expedition, 1910. Natural History Reports. Zoology. Vol. VIII. Crustacea, 1929. [p.236, Fig.8].
Female: a, habitus (dorsal view); b, rostrum (right view); c, A2; d, first foot; e, first basal joint of fifth foot.
Male: f, fifth feet; g, terminal portion of right fifth foot.


Espèce Euchirella rostromagna - Planche 3 de figures morphologiquesissued from : J.M. Bradford & J.B. Jillett in Mem. N.Z. oceanogr. Inst., 86, 1980. [p.42, Fig.26].
Female: A, habitus (dorsal); B, idem (lateral right side); C, inner edge of basipod 1 of P4.

Nota: The number of teeth on the female P4 basipod 1 varies: 12 and 10 on the specimen from the same Antarctic station and 13 on the specimen from an another antarctic station.


Espèce Euchirella rostromagna - Planche 4 de figures morphologiquesissued from : W. Vervoort in Verh. K. ned. Akad. Wet., Afd. Natuurk., 1951, (Sect. 2) 47 (2). [p.83, Fig.45].
Female (from 66°11'S, 12°14'W): a-b, habitus (dorsal and lateral, respectively).
Nota: Proportional lengths of cephalothorax and abdomen as 38:9. Body

Espèce Euchirella rostromagna - Planche 5 de figures morphologiquesissued from : W. Vervoort in Verh. K. ned. Akad. Wet., Afd. Natuurk., 1951, (Sect. 2) 47 (2). [p.84, Fig.46].
Female: a, posterior part cephalothorax and urosome (lateral); b, forehead (lateral); c, genital somite (ventral).
Nota: Genital segment symmetrical, dorsally appears to be slightly swollen on both sides; laterally provided with a big genital swelling; vental aspect of genital tubercle with a small genital flap, covering 2 small genital orifices; ridge at caudal border distinctly visible. Caudal borders of first three abdominal segments with hyaline lamella, on the dorsal side formed into plate like teeth.


Espèce Euchirella rostromagna - Planche 6 de figures morphologiquesissued from : W. Vervoort in Verh. K. ned. Akad. Wet., Afd. Natuurk., 1951, (Sect. 2) 47 (2). [p.85, Fig.47].
Female: a, right P1 (anterior); b, posterior part cephalothorax and urosome (dorsal).
Nota: Anal segment with small, rounded flap.Caudal rami as long as wide, carrying 4 strong, suequal marginal setae, densely plumose, in addition each ramus carries 1 short, strong, nude external seta and 1 plumose, curved internal (appendicular seta; internal surface of the rami haired.


Espèce Euchirella rostromagna - Planche 7 de figures morphologiquesissued from : W. Vervoort in Verh. K. ned. Akad. Wet., Afd. Natuurk., 1951, (Sect. 2) 47 (2). [p.86, Fig.48].
Female: a-b, A1 (the numbers 19 and 20 indicate the 19th and 20th segments); c, right Md (mandiobular palp); d, left Mx1.
Nota: A1 24-segmented (8th-9th segments completely fused).
Nota: Mx1 with slightly elongate 1st inner lobe and a small, squarish 1st outer lobe; 1st inner lobe has 9 very strong and 3 smaller setiform spines, plus 1 setiform spine is present on the anterior surface; 2nd inner lobe elongate, with 2 strong setae and 1 much smaller seta; 3rd inner lobe carrying 2 setae; 1st outer lobe with 9 setae, 5 of which strong, 4 small and curved, all plumose; 2nd outer lobe not observed; 2nd basal segment elongate indistinctly separated from the fused endopodal segments, there are apparently 3 setae on the 2nd basal segment and 3 on the endopod; exopod remarkably small, with 10 plumose setae.


Espèce Euchirella rostromagna - Planche 8 de figures morphologiquesissued from : W. Vervoort in Verh. K. ned. Akad. Wet., Afd. Natuurk., 1951, (Sect. 2) 47 (2). [p.88, Fig.49].
Female: a, left A2; b, right Md (cutting edge); c, left Mxp; d, left Mx2.
Nota: Endopod of A2 less than half the length of the exopod. Mx2 short, with 5 prominent lobes; lobe 1-4 found on the 1st basal segment, each with 2 plumose setae and 1 short, spinulose seta; on lobe 4 one of the setae has the shape of a strong spine; internal surface of the lobes with a horizontal row of fine spinules, which are less distinctly developed on the 1st lobe; lobe 5 has a short but remarkably strong, curved spine, coalescent with the lobe, in addition to 1 small and 1 elongate seta, no spinules on the internal surface; the endopod has a small 6th lobe, which carries 1 seta; there are 2 proximal endopodal segments, each with an elongate, plumose seta, at the base of which a much smaller seta (1 on each segment); 3rd (apical) endopodal segment with 3 plumose setae


Espèce Euchirella rostromagna - Planche 9 de figures morphologiquesissued from : W. Vervoort in Verh. K. ned. Akad. Wet., Afd. Natuurk., 1951, (Sect. 2) 47 (2). [p.90, Fig.50].
Female: a-c, P2 to P4 (right feet; anterior surface).
Nota: Endspines on the 3rd exopodal segments with 24 teeth in P3 and 26 in P4.


Espèce Euchirella rostromagna - Planche 10 de figures morphologiquesissued from : J.C. von Vaupel Klein in Crustaceana, Supplt 9, Studies on Copepoda, III, 1984. [p.76, Fig.14, a].
Female: a, exopodite 2 of Mxp (with 4 setae).
Scale bar = 0.2 mm.


Espèce Euchirella rostromagna - Planche 11 de figures morphologiquesissued from : J.C. von Vaupel Klein in Zool. Verh. Leiden, 1998, 323. [p.387, Fig.2].
Measurements taken from maxilliped: Ba1 = length of basipodal segment 1; Ba2 = length of Ba2; S = length of the longest seta of the only ramus (endopodite).
measurements used to compare with other species (tables 1 and 2) in view of the speciation (see discussion after Von Vaupel Klein (1998, pp.389-397) in the genus Euchirella.


Espèce Euchirella rostromagna - Planche 12 de figures morphologiquesissued from : J.C. von Vaupel Klein in Zool. Verh. Leiden, 1998, 323. [p.386, Table 2].
Dimensions of adult females of E. rostrata, E. rostromagna, and E. latirostris, presumably relevant in the separation of niches.
1/ See Material and methods (Von Vaupel Klein, 1998, pp.385-385); 2/ Present collections: 2.7-3.85 mm; 3/ Present collections: 5.3-6.2 mm; 4/ Present collections: 5.4-6.2 mm; 5/ Of E. rostrata vs the average of the two larger spp.; 6/ Of E. rostromagna vs E. latirostris; 7/ From Von Vaupel Klein 1984, p.93); 8/ Of E. rostrata vs E. rostromagna and of E. rostrata vs E. latirostris, respectively.


Espèce Euchirella rostromagna - Planche 13 de figures morphologiquesIssued from : J.C. von Vaupel-Klein in Zool. Meded., Leiden, 19972, 47 (41). [p.511, Fig.5, b].
Female (from 55°34'S, 170°27'E): Endopodite of right P1 (anterior view).

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

Ref. compl.:
Sewell, 1948 (p.574); Björnberg, 1973 (p.324, 386); Zmijewska, 1987 (tab.2a); Hopkins & Torres, 1988 (tab.1); Ward, 1989 (tab.2); Hosie & Cochran, 1994 (tab.2); Errhif & al., 1997 (p.422); Razouls & al., 2000 (p.343, tab. 3, 4, Appendix); Schnack-Schiel & al., 2008 (p.1045: Tab.2)
NZ: 5

Carte de distribution de Euchirella rostromagna par zones géographiques
Espèce Euchirella rostromagna - Carte de distribution 3issued from : J.C. von Vaupel Klein in Zool. Verh. Leiden, 1998, 323. [p.392, Fig.5].
Map showing the distributional areas of E. rostrata (Claus, 1866), E. rostromagna Wolfenden, 1911, and E. latirostris Farran, 1929 , respectively; note the considerable overlap in range of E. rostrata and the other two species which, in their turn, are virtually coinciding in a strictly geographic sense. Antarctic convergence i(AC).
Loc:
Antarct. (Péninsule, Mer de Weddell, Atlant. SW, SE, Indien, Pacif. SW, SE), sub-Antarct. (Indien, Pacif. SW, SE), Chili, Brésil, Argentine, Nouvelle-Zélande
N: 25
Lg.:
(10) F: 6; (25) F: 5,99-5,45; (31) F: 6,65-5,85; (35) F: 6,2-5,52; M: 5,3; (246) F: 5,93-5,78; (413) F: 6,65-5,3; {F: 5,45-6,65; M: 5,30}
Rem.: méso-bathypélagique.
Sampling depth (Antarct., sub-Antarct.) : 100-500-1000 m
Voir aussi les remarques en anglais
Dernière mise à jour : 22/05/2013

 Toute utilisation de ce site pour une publication sera mentionnée avec la référence suivante :

Razouls C., de Bovée F., Kouwenberg J. et Desreumaux N., 2005-2012. - Diversité et répartition géographique chez les Copépodes planctoniques marins. Disponible sur http://copepodes.obs-banyuls.fr 
[Accédé le 23 mai 2013]

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