Species Card of Copepod
Calanoida ( Order )
    Clausocalanoidea ( Superfamily )
        Aetideidae ( Family )
            Bradyidius ( Genus )
Bradyidius rakuma  (Zvereva, 1977)   (F)
Syn.: Aetideopsis rakuma Zvereva, 1977 (p.6, Descr.F, figs.F)
Ref.:
Othman & Greenwood, 1987 (p.1137, Rem.); Markhaseva, 1996 (p.79, figs.F)
Species Bradyidius rakuma - Plate 1 of morphological figuresissued from : E.L. Markhaseva in Trudy Zool. Inst. RAN, St. Petersburg, 1996, 268. [p.80, Fig.57].
Female (from Zvereva, 1977 & unpublished). Re: exopod; Gn: genital segment (ventral and lateral): Ce: forehead (lateral and dorsall); R: rostrum (anterior).

Nota: Cephalothorax nearly 4 times longer than urosome.
A1 slightly longer than cephalothorax.
Endopodal segment 1 of Md with 2 setae, segment 2 with 9 terminal setae.
Posterior surface of Mx1 with 4 setae, endopod with 15 setae.


Species Bradyidius rakuma - Plate 2 of morphological figuresissued from : E.L. Markhaseva in Trudy Zool. Inst. RAN, St. Petersburg, 1996, 268. [p.81, Fig.58].
Female (holotype).


Species Bradyidius rakuma - Plate 3 of morphological figuresissued from : J.A. Zvereva in Issled. Fauny Moreï, 1977, 20 (28). [p.7, Fig.1]. As Aetideopsis rakuma.
Female (from Okhatsk Sea): 1, habitus (right lateral side); 2, forehead; 2', rostrum (frontal view); 3, A2; 4, mandibular palp; 5, cutting blade of Md; 6, Mx1; 7, Mx2; 8, Mxp; 9, thoracic segments and urosome (dorsal); 10, genital somite (left lateral side); 11, P1; 12, P2; 13, P3; P4 (exopod incomplete).


Species Bradyidius rakuma - Plate 4 of morphological figuresissued from : J.A. Zvereva in Issled. Fauny Moreï, 1977, 20 (28). [p.8]. As Aetideopsis rakuma.
Female: genital field, showing muscles articulating the plate above the genital opening (ventral).


Species Bradyidius rakuma - Plate 5 of morphological figuresBradyidius rakuma female:
1 - Rostrum with divergent rami.
2 - Points of last thoracic segment just reaching posterior border of genital segment. Exopodal segment 2 of A2 with 2 setae. Exopodal segment 1 of P1 with external spine almost reaching the base of external spine of segment 2.
3 - Posterior corners of last thoracic segment divergent.

Compl. Ref.:
Markhaseva, 1998 (p.250, Fig.2); Bradford-Grieve, 2003 (p.102, tab.3)
NZ: 1

Distribution map of Bradyidius rakuma by geographical zones
Loc:
Okhotsk Sea.

Type locality: Tobuty Bay (Aniva Gulf).
N: 2
Lg.:
(219) F: 3,3-3,1; {F: 3,10-3,30}
Rem.: hyperbenthic (on sandy bottom, depths of 60 m).
Last update : 30/12/2014
    to add your remark
  

 Any use of this site for a publication will be mentioned with the following reference :

Razouls C., Desreumaux N., Kouwenberg J. and de Bovée F., 2005-2021. - Biodiversity of Marine Planktonic Copepods (morphology, geographical distribution and biological data). Sorbonne University, CNRS. Available at http://copepodes.obs-banyuls.fr/en [Accessed February 25, 2021]

© copyright 2005-2021 Sorbonne University, CNRS

Webmaster
CNRS   Observatoire Océanologique de Banyuls sur Mer - Laboratoire Arago
Sorbonne Université

 

Version française
English version

 

Search

On the WEB of CNRS

 


Marine Planktonic Copepods

Marine Planktonic Copepods

 

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