Fiche d'espèce de Copépode
Calanoida ( Ordre )
    Clausocalanoidea ( Superfamille )
        Scolecitrichidae ( Famille )
            Scottocalanus ( Genre )
Scottocalanus rotundatus  Tanaka, 1961   (F,M)
Syn.: Scottcalanus rotundatus Tanaka, 1961 a (p.147, figs.F,M)
Ref.:
Tanaka, 1969 (p.275); Park, 1983 (p.198, 199); Bradford & al., 1983 (p.116)
Espèce Scottocalanus rotundatus - Planche 1 de figures morphologiquesissued from : O. Tanaka in Publ. Seto Mar. Biol. Lab., 1961, IX (1). [p.148, Fig. 109]. As Scottcalanus rotundatus.
Female (from Izu Region): a, habitus (dorsal); b, forehead (lateral); c, last thoracic segment and urosome (lateral, left side); d, rostrum; e, genital field; f, Mx1; g, P2; h, P3; i, P5.
- Head incompletely separates from the thopracic segments, as are the 4th from the 5th.
- Head without median crest.
- The rostral spine is about as long as the depth excavation.
- Abdomen about 5 times in the length of the cephalothorax.
- Urosome with 4 segments; segments and caudal ramus in the proportional lengths 46 : 20 : 14 : 5 : 51 = 100.
- Caudal rami about as long as wide.
- A1 23-segmented, extends to the end of the caudal rami.
- Exopod of A2 1.3 times as long as the endopod.

Male: j, last thoracic segment and urosome (lateral; k, distal segments of left P5.
- Lateral corner of the last thoracic segment narrowly rounded at the azpical portion.
- Urosomal segments and caudal ramus in the proportional lengths 19 : 25 : 21 : 19 : 8 : 8 = 100.
- A1 20 segments, segments 8-13 fused, 24 and 25 well separated.
- Exopod of A2 1.5 times long as the endopod.
- Md with a robust 2nd basal segment and a narrow biting part. Maxillae and Mxp as those of the female.
- P1 to P4 as those of the female.
- The 1st segment of the exopod of the right P5 has a small process on the distal inner margin. The distal segment of the exopod of the left P5 has a pad of stiff hairs and 2 strong curved spines (fig. k).


Espèce Scottocalanus rotundatus - Planche 2 de figures morphologiquesissued from : O. Tanaka in Publ. Seto Mar. Biol. Lab., 1961, IX (1). [p.149]. As Scottcalanus rotundatus.
Female: Segments of A1 in the proportional lengths.


Espèce Scottocalanus rotundatus - Planche 3 de figures morphologiquesissued from : O. Tanaka in Publ. Seto Mar. Biol. Lab., 1961, IX (1). [p.149]. As Scottcalanus rotundatus.
Male: Segments of A1 in the proportional lengths.

Ref. compl.:
Furuhashi, 1966 a (p.295, vertical distribution in Kuroshio region, Table 10); Shih & Young, 1995 (p.74); Kuriyama & Nishida, 2006 (p.300: Tab.II, fig.7); Sano & al., 2013 (p.11, Table 2, fig.5, feeding habits)
NZ: 3

Carte de distribution de Scottocalanus rotundatus par zones géographiques
Loc:
Japan (Izu, Sagami Bay, SW Bösö), Philippines, China Seas (South China Sea)
N: 6
Lg.:
(105) M: 4,43; 108) F: 4,07; M: 4,38; (1000) F: 4,1 ± 0,1; {F: 4,0-4,07; M: 4,38}
Rem.: mesopelagic. 82-301 m at Station N-1 (SW Bösö, E middle Japan from Furuhashi (1966 a).
After Tanaka (1961 a, p.150) the male of S. rotundatus differs from S. investigatoris in its small size and in having a small process on the 1st segment of the right P5.

After Sano & al. (2013, p.14, Table 2) atomic C:N (mean ± SD) = 5.0 ±0.5, n = 3, in Sagami Bay (21-27 April 2009).
Dernière mise à jour : 27/03/2017

 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 24 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