Fiche d'espèce de Copépode
Calanoida ( Ordre )
    Clausocalanoidea ( Superfamille )
        Scolecitrichidae ( Famille )
            Scolecithricella ( Genre )
Scolecithricella vespertina  Tanaka, 1955   (F)
Ref.:
Tanaka, 1955 (p.117, Descr.F, figs.F); Bradford & al., 1983 (p.103); Vyshkvartzeva, 1999 (2000) (p.234)
Espèce Scolecithricella vespertina - Planche 1 de figures morphologiquesissued from : O. Tanaka in Rec. oceanogr. Wks Japan, 1955, 2 (1). [p.117, Fig.1].
Female (off N Maizuru): a, habitus (dorsal); b, head (right lateral side); c, last thoracic segment and urosome (right lateral side); d, rostrum (dorsal view).

Nota Female:
- Cephalothorax about 4 times the abdomen length.
- Head and 1st pedigerous segment fused, 4th and 5th pedigers fused.
- Posterolateral corners of the last thoracic segment slightly emarginate.
- Rostrum with 2 fine filaments attached to a wide bifurcated base.
- Abdomen 4-segmented; proportional lengths of segments and caudal rami 40 : 20 : 17 : 6 : 17 = 100.
- Caudal rami 1.5 times as long as wide.
- Genital segment slightly swollen at the middle of the lateral margin in dorsal view; slightly swollen ventrally.
- A1 21-segmented, extends to the posterior margin of last thoracic segment.


Espèce Scolecithricella vespertina - Planche 2 de figures morphologiquesissued from : O. Tanaka in Rec. oceanogr. Wks Japan, 1955, 2 (1). [p.117, Fig.2].
Female: a, A2; b, Md; c, Mx1.

- A2 exopod about 1.3 times as long as endopod (37 : 28); 2nd endopodal segment swollen on the outer margin and furnished with hairs on outer margin.
- Md small, but well developed; exopod about 2 times as long as endopod (11 : 6); 3rd exopodal segment longest (8 : 7 : 12 : 3 : 2). Teeth of the cutting edge slender and close up.
- Mx1 small; spinulation on the outer lobe: 6 long and 3 short setae; exopod with 5 setae; endopod with 6 setae; 2nd basal segment with 2 setae; 3rd inner lobe with 2 setae; 2nd inner lobe with 1 seta; 1st inner lobe (= arthrite) with 8 long and 1 short spines.


Espèce Scolecithricella vespertina - Planche 3 de figures morphologiquesissued from : O. Tanaka in Rec. oceanogr. Wks Japan, 1955, 2 (1). [p.118, Fig.3].
a, Mx2; b, Mxp; c, P1 (posterior aspect).

- Mx2 with 4 inner lobes (= endites) of which the distal one is the longest, furnished with 1 strong spine, 1 slender one and 1 worm-like sensory filament. Endopod furnished with 9 sensory filaments of which the middle 4 are bud-like (fig.3a).
- Mxp well developed; basal segments of about equal lengths; 1st basal segment with a bud-like sensory filament on the inner margin about the middle of the segment; 4th and 5th segments of endopod with each 1 outer marginal seta.
- P1 exopod 3-segmented, endopod 1-segmented. 1st exopodal segment devoid of outer edge spine; 2nd basal (= basis) segment furnished with 2 groups of minute spinules on posterior surface.


Espèce Scolecithricella vespertina - Planche 4 de figures morphologiquesissued from : O. Tanaka in Rec. oceanogr. Wks Japan, 1955, 2 (1). [p.119, Fig.4].
Female: a, P2 (anterior aspect); b, P3 (idem); c, P4 (idem); d, P5.

- P2 exopod 3-segmented, endopod 3-segmented; coxa with small spines on the proximal outer margin and a row of minute spinules on posterior surface about the middle of segment; inner distal margin of basis ptoduced into an acute angle; 1st exopodal segment with the outer edge spine reaching the middle of the 2nd segment of exopodite.; posterior surface of the segment furnished with a longitudinal row of spinules; 2nd exopodal segment with a strong outer edge spine which extends to the middle of the proximal outer edge spine of the 3rd segment.; posterior surface of the segment furnished with 2 rows of spinules; the 3rd exopodal segment with 3 outer marginal spines; terminal spine finely serrated, number of teeth about 40; posterior surface of the 3rd segment furnished with 4 transverse rows of spinules. Endopodite broad; 1st segment pointed at the distal outer edge; 2nd segment with 6 remarkable spines on the anterior surface and a longitudinal row of minute spinules on posterior surface.
- P3 exopod and endopod 3-segmented each; coxa with a row of spines on proximal outer margin; posterior surface furnished with groups of spinules; inner marginal seta short; 2nd and 3rd exopodal segments furnished with rows of minute spinules on posterior surface; 2nd and 3rd endopodal segments each furnished with remarkable spines on anterior surface, and with a longitudinal row of minute spinules on posterior surface.
- P4 similar structure as in P3; outer margin of coxa smooth; inner marginal seta absent; there is on posterior surface a row of strong spines (5 in number) at the distal margin of the segment, and a group of minute spinules about the middle of the segment; the 2nd exopodal segment has a very short outer edge spine and a transversal row of minute spinules on posterior surface; yje 3rd exopodal segment has 3 rows of minute spinules on posterior surface; terminal spine very finely serrated; the 2nd and 3rd endopodal segments each furnished with longitudinal rows of spinules on posterior surface.
- P5 1-segmented; inner margin wjth on the middle of the segment 1 serrated spine which is about half as long as the segment; distam margin of the segment furnished with 1 short spine; the outer margin has 1 small spine on the distal 1/4 of the degment.


Espèce Scolecithricella vespertina - Planche 5 de figures morphologiquesissued from : O. Tanaka in Rec. oceanogr. Wks Japan, 1955, 2 (1). [p.118].
Female: Proportional lengths of segments of A1.
Nota: Segments 1-2, 8 to 10 and 24-25 fused.

NZ: 1

Carte de distribution de Scolecithricella vespertina par zones géographiques
Loc:
Sea of Japan (40 miles north of Maizuru)
N: 1
Lg.:
(123) F: 1,09; {F: 1,09}
Rem.: Genre mal assuré. Probable dans ce genre.
Dernière mise à jour : 22/03/2017

 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 03 décembre 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