Fiche d'espèce de Copépode
Calanoida ( Ordre )
    Clausocalanoidea ( Superfamille )
        Euchaetidae ( Famille )
            Paraeuchaeta ( Genre )
Paraeuchaeta eltaninae  (Park, 1978)   (F,M)
Syn.: Euchaeta eltaninae Park, 1978 (p.280, figs.F,M); Ward & Wood, 1988 (p.45, tab.1)
Ref.:
Bradford & al., 1983 (p.36, figs.F,M, Rem.); Park, 1994 (p.321); 1995 (p.39, Rem.F,M, figs)
Espèce Paraeuchaeta eltaninae - Planche 1 de figures morphologiquesissued from : T. Park in Bull. Scripps Inst. Oceanogr. Univ. California, San Diego, 1995, 29. [p.135, Fig.25].
Female: a, forehead (left side); b, urosome (left); c, genital somite (left); d, outer lobe of Mx1; e exopod of P1 (anterior); f, exopod of P2 (anterior).
Nota: Similar in habitus to P. parvula but distinguishable from it by rostrum, whivh in lateral view is almost triangular with a large base.
Laterally, genital somite with strongly bulging dorsal margin; ventral margin of genital flange nearly straight or only slightly emarginate and sloping posteroventrad. Posterior edge of genital field produced into a lox angular ridge with a wide base. Posterior margin of genital prominence slightly bulging and sloping about 30° with respect to long body axis.
Cephalosomal appendages similat to those of P. barbata and P. parvula except that outer lobe of Mx1 with 7 long setae, of which the proximalmost is shorter than the others, and a minute seta proximally.

Male: g, forehead (left); h, distal exopodal segments of left 5th leg (lateral, tilted clockwise).


Espèce Paraeuchaeta eltaninae - Planche 2 de figures morphologiquesissued from : T. Park in Antarctic Res. Ser. Oceanogr. Washington, 1978, 27.[p.281, Fig.118]. As Euchaeta eltaninae.
Female: A, forehead (lateral); B, C, D, distal end of metasome segment (right side, left side, and ventral, respectively); E, posterior part of metasome and urosome (right side, lateral); F, outer lobe of Mx1; G, P1; H, P2. P1-2: legs (anterior).

Nota: Proportional lengths of prosome and urosome about 68: 32.
Rostrum large, pointing obliquely fordward at angle of about 60° with respect to body.
Frontal eminence of forehead low, bearing suprafrontal sensilla.
A1 reaching distal end of metasome.

Nota from Bradford & al. (1983, p.37):
P1 exopod female: Aa minute: Bb = BC; Cc > BC.
P2 exopod female : Aa > AB; Bb = 1/3 BC; Cc = 2/3 CD; Dd = 1/3 CD. (see code of lengths outer spines in the Genus' figure, or in Paraeuchaeta sp. A).


Espèce Paraeuchaeta eltaninae - Planche 3 de figures morphologiquesissued from : T. Park in Antarctic Res. Ser. Oceanogr. Washington, 1978, 27.[p.282, Fig.119]. As Euchaeta eltaninae.
Male: A, forehead (lateral); B, C, last metasomal and genital segments (left side and right side, respectively); D, P1; E, P2; F, P5; G, H, I, distal part of exopod of left P5 (medial, anterior, and lateral, respectively). P1-5: legs (anterior).

Nota from Bradford & al; (1983, p.38):
P1 exopod male: Aa minute; Bb = 2/5 BC; Cc = 4/5 BC.
P2 exopod male: Aa = 1/6 AB; Bb = 1/3 BC; Cc = 1/4 CD; Dd = 1/4 CD. (see code of lengths outer spines in the Genus' figure, or in Paraeuchaeta sp. A).


Espèce Paraeuchaeta eltaninae - Planche 4 de figures morphologiquesParaeuchaeta eltaninae Female:
1 - See key to species Groups and independent species of Paraeuchaeta (p.30): malayensis species Group.
2 - Outer spine of 2nd exopodal segment (or the 2nd of the first 2 exopodal segments forming a proximal, compound segment) of P1 normally developed (Fig.25-e).
3 - Outer lobe of Mx1 with 7 long setae in addition to 1 or 2 minute setae proximally (Fig.25-d).
4 - Genital somite without a conical process on left side close to anterior base of genital prominence (Fig.25-c).
5 - Dorsally and ventrally, genital somite symmetrical.
6 - Laterally, genital flange with normal posterior lobe (Fig.25-c).
7 - Laterally, genital somite with more or less smooth dorsal margin (Fig.25-c).
8 - Laterally, genital prominence with nearly straight or only slightly bulging posterior margin (Fig.25-c).
9 - Outer lobe of Mx1 with 7 long setae plus 1 or 2 very minute setae (Fig.25-d).
10 - Laterally, genital prominence with posterior margin equal to or longer than posterior ventral wall of somite (Fig.25-c).
11 - Laterally, posterior margin of genital prominence and posterior ventral wall of somite forming an angle of more than 140° (Fig.25-c).
12 - Laterally, genital genital prominence with posterior margin distinctly longer than posterior ventral wall of somite (Fig.25-c).

Ref. compl.:
Razouls & al., 2000 (p.343, tab. 3, Appendix); Park & Ferrari, 2009 (p.143, Table 3, 8, figs.1, 2, Appendix 1, biogeography)
NZ: 3

Carte de distribution de Paraeuchaeta eltaninae par zones géographiques
Espèce Paraeuchaeta eltaninae - Carte de distribution 3issued from : T. Park in Biology of the Antarctic Seas VII. Antarctic Res. Ser., 1978, 27 (4). [p.283, Fig.120].
Occurrence of Euchaeta ( = Paraeuchaeta ) eltaninae.
Closed circles: stations where the species was found; A.C: Antarctic Convergence.
Espèce Paraeuchaeta eltaninae - Carte de distribution 4Issued from : E.T. Park & F.D. Ferrari in A selection from Smithsonian at the Poles Contributions to International Polar year. I. Krupnik, M.A. Lang and S.E. Miller, eds., Publs. by Smithsonian Institution Scholarly Press, Washington DC., 2009. [p.167, Fig.2].
Distribution of selected pelagic calanoids Paraeuchaeta eltaninae of the Southern Ocean and the closest relative in the subarctic region of the Arctic Ocean.
Loc:
Antarct. (SW & SE Atlant., SW & SE Pacif.), sub-Antarct., Tasman Sea

Locality type: Between 65°58'E, 174°54'E and 65°56'S, 174°34'E.
N: 5
Lg.:
(3) F: 7,8-7,3; M: 7,1-6,6; (20) F: 7,83-7,25; M: 7,08-6,58; {F: 7,25-7,83; M: 6,58-7,10}
Rem.: méso-bathypélagique.
Sampling depth (Antarct., sub-Antarct.) : 0-1000 m.
Voir aussi les remarques en anglais
Dernière mise à jour : 27/02/2015

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

Razouls C., Desreumaux N., Kouwenberg J. et de Bovée F., 2005-2021. - Biodiversité des Copépodes planctoniques marins (morphologie, répartition géographique et données biologiques). Sorbonne Université, CNRS. Disponible sur http://copepodes.obs-banyuls.fr [Accédé le 27 novembre 2021]

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