Fiche d'espèce de Copépode
Calanoida ( Ordre )
    Clausocalanoidea ( Superfamille )
        Aetideidae ( Famille )
            Valdiviella ( Genre )
Valdiviella oligarthra  Steuer, 1904   (F,M)
Syn.: Euchaeta gigas Brady, 1883 (p.65);
Valdiviella gigas : Sewell, 1913 (p.354, figs.F); 1929 (p.142, Rem. juv.);
Valdiviella insignis : Heptner, 1971 (p.113, figs. juv.M);
No Valdiviella oligarthra M : Tanaka & Omori, 1967 (p.247)
Ref.:
Steuer, 1904 (p.593, Descr.F, figs.F); Wolfenden, 1911 (p.247, Rem.); Sewell, 1929 (p.140, figs.F,M); Lysholm & al., 1945 (p.21); Sewell, 1947 (p.110); Vervoort, 1957 (p.86, Rem.); Tanaka, 1957 b (p.205, figs.F; Tanaka & Omori, 1967 (p.244, non M); 1970 b (p.153); Park, 1978 (p.191, figs.F,M); Bradford & Jillett, 1980 (p.83); Chihara & Murano, 1997 (p.690, Pl.50: F,M); Bradford-Grieve & al., 1999 (p.880, 927, figs.F,M); Vives & Shmeleva, 2007 (p.609, figs.F,M, Rem.)
Espèce Valdiviella oligarthra - Planche 1 de figures morphologiquesissued from : Tanaka O. in Publ. Seto Mar. Biol. Lab., 1957, 6 (2). [Fig.61, p.206].
Female (from Suruga): a, habitus (dorsal aspect); b, head (lateral aspect, left side); c, last thoracic segment and urosome (lateral aspect); d, exopodite and endopodite of Mx1; e, Mxp.; f, P1; g, P2.

Nota Female:
- Cephalothorax about 2 times the abdomen length (6.38 : 3.19)
- Head and 1st pediger segment incompletely separate, 4th and 5th pedigers fused.
- Posterolateral corners of last thoracic segment rounded.
- Rostrum 2-pointed, shot.
- Abdome 4-segmented; segments and caudal rami in proportional lengths 40 : 23 : 19 : 8 : 10 = 100.
- Genital segment swollen ventrally; genital area indented in lateral view..
- 2nd and 3rd abdominal segments with a tuft of hairs ventrally near proximal margin.
- Abdominal segments 1 to 3 fringed with fine teeth on distal margin.
- Caudal rami as long as wide.
- A1 23-segmented, extends to distal end of 3rd thoracic segment.
- P1 exopod 2-segmented and endopod 1-segmented.
- P2 to P4 with each exopodite 2-segmented (segments 1 and 2 of exopodite fused.
- P2 endopod 1-segmented.
- P3 and P4 endopod 2-segmented.


Espèce Valdiviella oligarthra - Planche 2 de figures morphologiquesissued from : T. Park in Antarctic Res. Ser. Washington, 1978, 27. [p.192, Fig.59].
Female: A, habitys (dorsal view); B, posterior part of metasome and urosome (dorsal view); C, idem (left side); D, forehead (lateral); E, genital segment (ventral); F, rostrum (anterior); G, outer lobe of Mx1; H, P1; I, P2. P1-2: legs (anterior)


Espèce Valdiviella oligarthra - Planche 3 de figures morphologiquesissued from : T. Park in Antarctic Res. Ser. Washington, 1978, 27. [p.193, Fig.60].
Male: A, habitus (left side); B, forehead (lateral); C, last metasomal and genital segments (lateral); D, A2; E, P1; F, P2; G, P5; H, exopod and endopod of left P5, medial; I, first exopodal segment and endopod of right P5, medial. P1-5: legs (anterior).


Espèce Valdiviella oligarthra - Planche 4 de figures morphologiquesissued from : R.B.S. Sewell in Mem. Indian Mus., 1929, X. [p.141, Fig.54].
Female (from off SE Sri-Lanka): a, habitus (lateral left side).

Male: b, P5.
Nota: Md devoid of any biting edge; endopod with 6 setae; exopod with 9 setae, of which two very short, on its 2nd segment and none on its 1st. Mx1 much reduced; outer lobe with 11 setae of which the 11th ivery short; endopod with 3 setae. Mx2 vestigial; in the basal segment the first three lobes reduced to mere prominences devoid of setae; the 4th and 5th lobes with 2 setae each; endopod with 5 setae.


Espèce Valdiviella oligarthra - Planche 5 de figures morphologiquesissued from : M.V. Heptner in Trudy. Inst. Okeanol., 1971, 92. [p.114, Fig.19]; As Valdiviella insignis. Heptner thinks this form is a copepodid V female in the Kuril-Kamchatka Trench( (3800-7100 m). comm. pers..
Body length: 9 mm.


Espèce Valdiviella oligarthra - Planche 6 de figures morphologiquesissued from : A. Steuer in Zool. Anz., 1904, 27 (19. [p.595, Figs.1-3].
Female: 1, P1; 2, P2; 3, endopod of P4.

Nota: A1 23 segmented (segments 8 and 9 fused, 24 and 25 fused), lengt of segments in 0.01 mm: 27, 20,17,19,24, 21, 19, 23, 7, 7, 8, 13, 15, 21, 29, 34, 32, 37, 34, 26, 24, 26, 31.


Espèce Valdiviella oligarthra - Planche 7 de figures morphologiquesissued from : Tanaka O. in Publ. Seto Mar. Biol. Lab., 1957, 6 (2). [p.207].
Female A1: Proportional lengths of segments.
- A1 23-segmentrd; extends to distal end of 3rd thoracic segment.

Ref. compl.:
Sewell, 1948 (p.331, 500, 516, 521, 527); Grice & Hulsemann, 1967 (p.15); 1968 (tab.2); Park, 1970 (p.476); Björnberg, 1973 (p.325, 389); Suarez-Morales & Gasca, 1998 a (p.109); Razouls & al., 2000 (p.343, Appendix); Park & Ferrari, 2009 (p.143, Table 4, Appendix 1, biogeography); Medellin-Mora & Navas S., 2010 (p.265, Tab. 2);
NZ: 11

Carte de distribution de Valdiviella oligarthra par zones géographiques
Loc:
Antarct. (SE Pacif.), sub-Antarct. (SW Atlant., SE Pacif.), South Africa, off E St. Paul Is., G. of Guinea, off NW Cape Verde Is., Canary Is., Atlant. (tropical, N temperate), Caribbean Sea, Caribbean Colombia, G. of Mexico, Arabian Sea, Laccadive Is., off Seychelles, W Indian, off E Sri Lanka, Bay of Bengal, Flores Sea, Japan (Izu), SE Pacif., off Juan Fernandez Is., Chile (N & S).
N: 15
Lg.:
(11) F: 10; (29) F: 7,2; M: 6,2; (56) F: 9,57; (70) F: 9,8-9,5; (112) F: 9,78-9,4; (866) M: 6,02-9,08; (1034) F: 9,0; {F: 7,20-10,00; M: 6,02-9,08}
Rem.: bathypélagique.
Sampling depth (Antarct., sub-Antarct.): 0-2000 m.
Voir aussi les remarques en anglais
Dernière mise à jour : 22/04/2021

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

Razouls C., Desreumaux N., Kouwenberg J. et de Bovée F., 2005-2024. - Biodiversité des Copépodes planctoniques marins (morphologie, répartition géographique et données biologiques). Sorbonne Université, CNRS. Disponible sur http://copepodes.obs-banyuls.fr [Accédé le 21 novembre 2024]

© copyright 2005-2024 Sorbonne Université, CNRS

Webmaster
Mentions légales et informations nominatives
CNRS   Observatoire Océanologique de Banyuls sur Mer - Laboratoire Arago
Sorbonne Université

 

Version française
English version

 

Rechercher

Sur le WEB du CNRS

 


Copépodes planctoniques marins

Copépodes planctoniques marins

 

Imprimer Contact Accueil Plan du site Accès restreint Retour Une du Labo Imprimer Contact Plan du site Crédits Téléchargez les Plug-Ins