Fiche d'espèce de Copépode
Calanoida ( Ordre )
    Clausocalanoidea ( Superfamille )
        Euchaetidae ( Famille )
            Paraeuchaeta ( Genre )
Paraeuchaeta kurilensis  Heptner, 1971   (F,M)
Syn.: Pareuchaeta kurilensis Heptner, 1971 (p.83, Descr.F, figs.F); Mauchline, 1998 (tab.42);
Euchaeta longissima Park, 1978 (p.283, figs.F,M); Ward & Wood, 1988 (p.45, tab.1); Mauchline, 1992 a (p.2); 1994 a (p.561); 1999 (n°182, p.8, figs.F,M);
Paraeuchaeta longissima : Bradford & al., 1983 (p.43, figs.F,M)
Ref.:
Bradford & al., 1983 (p.23); Park, 1994 (p.322); 1995 (p.62, Rem.F, M, figs.F,M); Bradford-Grieve & al., 1999 (p.880, 926, figs.F)
Espèce Paraeuchaeta kurilensis - Planche 1 de figures morphologiquesissued from : T. Park in Bull. Scripps Inst. Oceanogr. Univ. California, San Diego, 1995, 29. [p.167, Fig.57].
Female: a, forehead (left side); b, urosome (left); c, genital somite (left); d, outer lobe of Mx1; e, idem (showing variation in size of proximal setae); f, exopod of P1 (anterior); g, exopod of P2 (anterior).
Nota: Similar in habitus including rostrum and urosome to P. vorax but can be distinguihed from it by the absence of a conspicuous ridge on the left side of the genital somite.
Cephalosomal appendages as in P. gracilicauda and P. vorax with minor exceptions that 1st endopodal segment of Mx1 with 6 setae and outer lobe with 2 small setae proximally, which are somewhat variable in size, in addition to 5 long setae. In P1 exopod, outer spine of 2nd segment reaching base of outer spine of 3rd segment, which is only a little shorter than 1/2 length of terminal spine. In P2 exopod, outer spine of 2nd segment extending to or beyond distal end of following outer spine and about as long as 2nd outer spine of 3rd segment; incision separating 2nd marginal lobe of 3rd segment relatively deep.

Male: h, forehead (left); i, distal exopodal segments of left 5th leg (lateral); j, second exopodal segment of left 5th leg (anterior).


Espèce Paraeuchaeta kurilensis - Planche 2 de figures morphologiquesissued from : T. Park in Antarctic Res. Ser. Oceanogr. Washington, 1978, 27.[p.284, Fig.121]. As Euchaeta longissima.
Female: A, forehead (lateral); B, posterior part of metasome and urosome (dorsal); C, genital segment (ventral); D, posterior part of metasome and urosome (left side, lateral); E, last metasomal and genital segments (right side, lateral); F, outer lobe of Mx1; G, P1; H, P2. P1-2: legs (anterior).

Nota from Bradford & al. (1983, p.43): - P1 exopod female: Aa = 1/4 AB; Bb = BC; Cc > BC.
- P2 exopod female: Aa = AB + 1/2 Bb; Bb = 1/2 BC; Cc = CD; Dd = 1/6 CD. (see code of lengths outer spines in the Genus' figure, or in Paraeuchaeta sp. A).


Espèce Paraeuchaeta kurilensis - Planche 3 de figures morphologiquesissued from : T. Park in Antarctic Res. Ser. Oceanogr. Washington, 1978, 27.[p.285, Fig.122]. As Euchaeta longissima.
Male: A, forehead (lateral); B, last metasomal and genital segments (left side); C, P1; D, P2; E, P5; F, serrated lamella of left P5 (anterolateral); G, H, distal part of exopod of left P5 (lateral and medial, respectively). P1-5: legs (anterior).
Nota from Bradford & al. (p.43): - P1 exopod male: Aa minute; Bb < 1/2 BC; Cc = 3/4 BC.
- P2 exopod male: Aa : 1/4 AB; Bb = 1/3 BC; Cc = 1/3 CD; Dd = 1/5 CD. (see code of lengths outer spines in the Genus' figure, or in Paraeuchaeta sp. A).


Espèce Paraeuchaeta kurilensis - Planche 4 de figures morphologiquesissued from : M.V. Heptner in Trudy. Inst. Okeanol., 1971, 92. [p.84, Fig.4]. As Pareuchaeta kurilensis.
Female (from Kuril-Kamchatka Trench): r, rostrum, sgf, genital segment (ventral); sgl, idem (lateral); agn, genital area; P1 ; P2.
Formula of the exopod of P1 spines on the last two segments, successively : Aa < AB (Aa = 1/2 AB); Bb > BC (Bb = 1 1/6 BC); Cc ≈ 2 BC. Variant: Aa = 2/3 AB. P2 : Aa > AB (Aa = Ab); Bb < BC (Bb = 1/2 BC); Cc < CD (Cc ≈ 5/6 CD). Variant: Aa < AB (Aa = AB + 2/3 Bb); Aa > Ab (Aa = Ab + 1/3 Bb); Bb ≈ 2/3 BC. [cf. legend in drawings of Heptner, 1971, for Pareuchaeta rubra]


Espèce Paraeuchaeta kurilensis - Planche 5 de figures morphologiquesissued from : J. Mauchline in ICES Ident. Leafl. Plankton, 1999, N°182. [p.3, Fig.2: 10a]. As Euchaeta longissima.
Female (Northeast Atlantic): 10a, genital double-somite (left side).


Espèce Paraeuchaeta kurilensis - Planche 6 de figures morphologiquesissued from : J. Mauchline in ICES Ident. Leafl. Plankton, 1999, N°182. [p.4, Fig.3: 10b].
Male (Northeast Atlantic): 10b, terminal two segments, exopodal segments of left P5.


Espèce Paraeuchaeta kurilensis - Planche 7 de figures morphologiquesParaeuchaeta kurilensis 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.57-f).
3 - Outer lobe of Mx1 with 5 long setae in addition to some very small setae proximally (Fig.57-d).
4 - Laterally, genital prominence low with more or less convex genital flanges (Fig.57-c).
5 - Laterally, rostrum well developed (Fig.57-a).
6 - Laterally, posterior margin of genital prominence smoothly merging into posterior ventral wall of somite (Fig.57-c).
7 - Genital somite without conspicuously ridged outgrowth on left side posterior to genital prominence (Fig.57-c).
8 - Laterally, rostrum thick, pointing obliquely forward (Fig.57-a).

Ref. compl.:
Razouls & al., 2000 (p.343, Appendix); Park & Ferrari, 2009 (p.143, Table 4, Appendix 1)
NZ: 10

Carte de distribution de Paraeuchaeta kurilensis par zones géographiques
Loc:
Antarct.: South Georgia, SE Atlant., Pacif. (SW, S & SE); Atlant. (NE & SE), off Rockall Is., W Indian, Japan, Kuril-Kamchatka, Tasman Sea, Pacif. (E & central N)
N: 6
Lg.:
(3) F: 7,9-5,83; M: 6,9-5,91; (20) F: 7,91-7,25; M: 6,5; (23) F: 8,35-8; {F: 5,83-8,35; M: 5,91-6,90}
Rem.: méso-bathypélagique.
Sampling depth (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., 2005-2020. - Biodiversité des Copépodes planctoniques marins (morphologie, répartition géographique et données biologiques). Sorbonne Université, CNRS. Disponible sur http://copepodes.obs-banyuls.fr [Accédé le 01 décembre 2020]

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