Fiche d'espèce de Copépode
Calanoida ( Ordre )
    Clausocalanoidea ( Superfamille )
        Euchaetidae ( Famille )
            Paraeuchaeta ( Genre )
Paraeuchaeta grandiremis  (Giesbrecht, 1888)   (F,M)
Syn.: Euchäta grandiremis Giesbrecht, 1888; 1892 (p.246, 264, 772, Descr.F, figs.F);
Euchaeta grandiremis : Giesbrecht & Schmeil, 1898 (p.41, Rem. F); Wolfenden, 1911 (p.299); Vervoort, 1957 (p.77); Volkov, 1970 a (p.353, Descr.M); 1970 b (p.355 : figs.M);
Pareuchaeta grandiremis : Wilson, 1942 a (p.201); C.B. Wilson, 1950 (p.281, figs.F,M); Heinrich, 1990 (p.17)
Ref.:
Park, 1995 (p.93, Redescr.F, Descr.M, figs.F,M)
Espèce Paraeuchaeta grandiremis - Planche 1 de figures morphologiquesissued from : T. Park in Bull. Scripps Inst. Oceanogr. Univ. California, San Diego, 1995, 29. [p.198, Fig.88].
Female: a, habitus (left side); b, forehead (left); c, urosome (left); d, e, genital somite (left, right, respectively); f, right caudal ramus (dorsal); g, A2; h, Mx1 (first inner lobe separated), posterior; i, Mx2 (4th and 5th lobes and endopod separated), posterior; j, endopod of Mxp (anterior); k, P1; l, P2, m, P3. P1-3 = swimming legs 1-3 (anterior).

Nota: A1 extraordinaly long, extending beyond distal end of caudal ramus by at last 5 segments or by about 1/3 its length (however, A1 similar to that of P. malayensis. 1st pedigerous somite separated from cephalosome by a clear line of joint.
Rostrum small, pointing straight in an anteroventral direction.
Supralabrum relatively short, pointing obliquely forward roughly in parallel to rostrum.
A2: coxa, basis, and 1st endopodal segment each with a conspicuous swelling at proximal end.
Md: similar to that of P. malayensis
Mx1: with 1+7+1 setae on 1st inner lobe, no seta on 2nd, and 1seta on 3rd; 5 setae on basis (of which the small innermost seta was absent in many specimens), 2 setae on 1st endopodal segment. Exopod with 10 long setae and similar to that of P. malayensis but with a high swelling on posterior margin proximal to 1st lobe.
Mxp also similar to that of P. malayensis except that 2nd and 4th endopodal segments each with 2 setae (instead of 3).
1st exopodal segment of P1 not separated from 2nd, without an outer spine; its outer margin only slightly bulging. Outer spine of 2nd segment relatively small, reaching about 1/3 way to base of following outer spine.
In P2 exopod, last 4 outer spines of similar size, only a little longer than 1st. First 2 marginal lobes bearing outer spines in 3rd exopodal segment each separated from segment by moderately deep incision.
Exopod of P3 similar to that of P2.


Espèce Paraeuchaeta grandiremis - Planche 2 de figures morphologiquesissued from : T. Park in Bull. Scripps Inst. Oceanogr. Univ. California, San Diego, 1995, 29. [p.199, Fig.89].
Male: a, habitus (left side); b, forehead (left); c, caudal rami (ventral); d, P1; e, P2; f, P5; g, h, distal exopodal segments of left 5th leg (lateral, medial, respectively); i, serrated lamella (lateral). P1-5 = legs (anterior).

Nota: Fusion between cephalosome and 1st pedigerous somite complete.
Forehead in lateral view similar to that of female, but rostrum larger and slightly curved backward.
Posterolateral corners of prosome symmetrical and rounded, with a toothlike process on dorsal margin.
A1 extending beyond distal end of caudal ramus by its last 2 or 3 segments.
All cephalosomal appendages similar to those of P. malayensis.
1st exopodal segment of P1 almost fully separated from 2nd, without an outer spine; outer spine of 2nd segment relatively small, pointing distad.
P2 to P4 similar to those of female.
Appendicular caudal seta originating from a cylindrical base, smoothly curved, about 1/2 length of 3nd or 5th marginal caudal seta; 4th marginal caudal seta longer than 3rd or 5th by 2/5 its length.


Espèce Paraeuchaeta grandiremis - Planche 3 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.37, Figs.41, 42]. As Euchäta grandiremis.
Female: 41, urosome with spermatophore (lateral); 42, urosome (dorsal).


Espèce Paraeuchaeta grandiremis - Planche 4 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.16, Fig.42]. As Euchäta grandiremis.
Female: 42, outline basis 1 and 2 of Mx2.


Espèce Paraeuchaeta grandiremis - Planche 5 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.16, Fig.11]. As Euchäta grandiremis.
Female: 11, exopodite 3 of P2 (posterior view).

Ref. compl.:
Sewell, 1948 (p.348, 501); Fagetti, 1962 (p.22); Bradford & al., 1983 (p.23); Brinton & al., 1986 (p.228, Table 1); Park, 1994 (p.320); Suarez-Morales & Gasca, 1998 a (p.109); Park & Ferrari, 2009 (p.143, Table 8, biogeography)
NZ: 4

Carte de distribution de Paraeuchaeta grandiremis par zones géographiques
Loc:
California, Gulf of California, W Colombia, off Galapagos, NE Tuamotu Is., NE Easter Is., Peru, Pacif. (SE (tropical, off N Chile, [ E Cape Verde Is. (in Wolfenden, 1911), off NW St. Peter & St. Paul Rocks (in Wilson, 1942 a, p.32) ]
N: 7
Lg.:
(3) F: 5,8-5,2; M: 4,7-4,4; (47) F: 5,2; {F: 5,20-5,80; M: 4,40-4,70}
Rem.: bathypélagique.
Les P5 mâles figurées par Volkov et Park ne coïncident pas.
Park (1995) ne retient pas la présence de cette epèce en Atlantique.
Voir aussi les remarques en anglais
Dernière mise à jour : 27/01/2015

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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 24 septembre 2021]

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