Fiche d'espèce de Copépode
Calanoida ( Ordre )
    Clausocalanoidea ( Superfamille )
        Scolecitrichidae ( Famille )
            Scolecitrichopsis ( Genre )
Scolecitrichopsis elongatus  (Grice & Hulsemann, 1970)   (F,M)
Syn.: Xanthocalanus elongatus Grice & Hulsemann, 1970 (p.190, figs.F,M); Bradford & al., 1983 (p.71, 104); Gowing & Wishner, 1986 (tab.3); Bradford-Grieve, 2004 (p.284)
Ref.:
Vyshkvartzeva, 1999 (2000) (p.221)
Espèce Scolecitrichopsis elongatus - Planche 1 de figures morphologiquesIssued from : G.D. Grice & K. Hülsemann in Bull. Mus. Comp. Zool., Harvard, 1970, 139 (4). [p.204-205, Pl. IV, Figs. 74-78]. As Xanthocalanus elongatus.
Female (from 39°45.2'N, 70°33.8'W): 74-45, habitus (lateral and dorsal, respectively); 76, 5th thoracic segment and urosome (lateral); 77, same (dorsal); 78, 4th and 5th abdominal segments and caudal rami (ventral).

Nota : - Head and 1st thoracic segment fused, 4th and 5th thoracic segments separate.
- Abdomen 4-segmented, anal segment very short.
- Genital segment with short hair mainly distributed on sides and posterior margin.
- Rostrum of moderate size with 2 filaments.
- Posterolateral margin of 5th thoracic segment with small point.
- A1 24-segmented, reaching to middle of genital segment, segments 8 and 9 fused.
- Endopod of A2 nearly as long as exopod.
- Basal segment of Md palp bearing 3 setae ; gnathobase with 8 teeth and 1 seta.
- Mx1 with 2 setae on 2nd inner lobe, 3 setae on 3rd inner lobe, 5 setae on 2nd basal segment, 3 and 5 setae on endopod, 7 setae on exopod.
- Mx2 5th lobe with 2 strong spines and 1 seta ; 1 seta each modified as sensory structure on 3rd and 5th lobes ; endopod with 3 ribbon-like and 5 smaller sensory appendages.
- 1st and 2nd basal segments of Mxp of about equal length, in endopod 2nd segment longest.
- Endopods of P1 1-segmented, of P2 2-segmented, of P3 and P4 as well as exopods of P1 to P4 3-segmented. Posterior sides of rami of P2 to P4 covered with spinules, especially dense on P4 including both basipodal segments.
- P5 3-segmented, 2nd and 3rd segments with many spinules mainly on outer side. Distal segment with 1 short terminal and 1 long internal spine ; internal spine inserting close to terminal spine, exceeding distal segment of P5 in length.


Espèce Scolecitrichopsis elongatus - Planche 2 de figures morphologiquesIssued from : G.D. Grice & K. Hülsemann in Bull. Mus. Comp. Zool., Harvard, 1970, 139 (4). [p.206-207, Pl. V, Figs. 79-91]. As Xanthocalanus elongatus.
Female: 79, left A1; 80, A2; 81, Md palp; 82, Md (masticatory edge); 83, Mx1; 84, Mx2; 85, Mxp; 86, P1; 87, P2 (terminal spine omitted); 88, P3; 89, external spine of 2nd exopodal segment of P3; 90, P4; 91, P5.


Espèce Scolecitrichopsis elongatus - Planche 3 de figures morphologiquesIssued from : G.D. Grice & K. Hülsemann in Bull. Mus. Comp. Zool., Harvard, 1970, 139 (4). [p.206-207, Pl. V, Figs. 92-96]. As Xanthocalanus elongatus.
Male: 92-93, habitus (lateral and dorsal, respectively); 94, forhead (lateral); 95, 4th and 5th thoracic segments and genital segment (lateral); 96, A2.

Male : - Head and 1st thoracic segment fused, 4th and 5th separate.
- Abdomen 5-segmented, anal segment very small.
- Rostrum of moderate size with 2 filaments.
- Posterolateral margin of 5th thoracic segment with small, blunt corner.
- A1 reaching 3rd abdominal segment ; segments 8 and 9, 10 and 12, and on right side 20 and 21 fused. Sensory structures on segments 2 and 3.
- Endopod of A2 little shorter than exopod.
- Basal segment of Md palp carrying 2 very small setae ; exopod and endopod of about equal length ; gnathobase with 7 teeth and 1 strong seta.
- 2 setae on 2nd inner lobe of Mx1, 3 setae on 3rd inner lobe, 4 setae on 2nd basal segment, 3 setae on 1st, 2 setae on 2nd, 3 setae on 3rd endopodal segment, 7 setae on exopod.
- Mx2 stout, 5th lobe with coarse spine ; endopod with 2 kinds of sensory filaments.
- Basal segments of Mxp of nearly equal length, in endopod 2nd segment longest.- Endopod of P1 1-segmented, of P2 2-segmented, of P3 and P4 as well as exopods of P1 to P4 3-segmented. Posterior sides of endopods and exopods of P2 to P4 beset with spines, very thickset in P4. Endopod of left P4 devoid of spinules.
- P5 very asymmetrical. Left side 5-segmented, extremely long, exceeding half the total length of body ; first 4 segments slender, terminal segment short, bearing several setae. Right side 3-segmented, small, slightly longer than 1st segment of left side. Endopods absent.


Espèce Scolecitrichopsis elongatus - Planche 4 de figures morphologiquesIssued from : G.D. Grice & K. Hülsemann in Bull. Mus. Comp. Zool., Harvard, 1970, 139 (4). [p.208-209, Pl. VI, Figs. 97-110]. As Xanthocalanus elongatus.
Male: 97, right A1; 98, Md palp; 99, Md (masticatory edge); 100, Mx1; 101, Mx2; 102, Mxp; 103, P1; 104, P2; 105, P3; 106, P4; 107, P5; 108, right P5 and 1st segment of left leg; 109, tip of left P5 (posterior view); 110, tip of right P5 (anterior view).

NZ: 1 + 1 douteuse

Carte de distribution de Scolecitrichopsis elongatus par zones géographiques
Loc:
off Woods Hole, ? off California (Santa Catalina Basin).

Type locality: 39°45.2' N, 70°33.8' W.
N: 2 (+1?)
Lg.:
(200) F: 2,8-2,48; M: 2,84-2,56; {F: 2,48-2,80; M: 2,56-2,84}
Rem.: bathypélagique.
Dernière mise à jour : 07/03/2015

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

Razouls C., de Bovée F., Kouwenberg J. et Desreumaux N., 2005-2019. - Diversité et répartition géographique chez les Copépodes planctoniques marins. Sorbonne Université, CNRS. Disponible sur http://copepodes.obs-banyuls.fr [Accédé le 19 mars 2019]

© copyright 2005-2019 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