Species Card of Copepod
Calanoida ( Order )
    Clausocalanoidea ( Superfamily )
        Mesaiokeratidae ( Family )
            Mesaiokeras ( Genus )
Mesaiokeras heptneri  Andronov, 1973   (F,M)
Ref.:
Andronov, 1973 (p.1242, figs.F,M); Fosshagen, 1978 (p.181, Rem.); Boxshall & Halsey, 2004 (p.144; p.143: figs.F,M)
Species Mesaiokeras heptneri - Plate 1 of morphological figuresissued from : Andronov V.N. in Zool. Zh, 1973, 52 (8). [Fig.1, p.1243].
Female off Cap Cod): 1, 2, habitus (dorsal, lateral); 3, genital segment (ventral view); 4, the same (lateral); 5, Rostrum; 6 the same (lateral); 7, P1; 8, P4; 9, P5; 10, P5 (juvenile, stage V).

Male: 11, 13, habitus (dorsal, lateral); 13, P5; 14, P5 (juvenile, stage V)


Species Mesaiokeras heptneri - Plate 2 of morphological figuresIssued from : V.N. Andronov in Russian Acad. Sci. P.P. Shirshov Inst. Oceanol. Atlantic Branch, Kaliningrad, 2014. [p.84, Fig.21: 8]. Mesaiokeras heptneri after Andronov, 1973 a.
Female P5.

NZ: 1

Distribution map of Mesaiokeras heptneri by geographical zones
Loc:
NW Atlant. (off Cape Cod)
N: 1
Lg.:
(407) F: 0,46-0,4; M: 0,4-0,38; {F: 0,40-0,46; M: 0,38-0,40}
Rem.: hyperbenthic. (220-235 m).
For Fosshagen (1978, p;181) M. hepneri may be considered the most primitive member of the genus: A1 female 24; exopod of the P1 bears 1 spine on the outer margin of the 1st and 2nd segments; it is the only known species with both P5 present in the female and a 3-segmented right P5 in the male; and there is less reduction in M. hepneri than in the other species.
Last update : 21/04/2016
    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., 2005-2024. - Biodiversity of Marine Planktonic Copepods (morphology, geographical distribution and biological data). Sorbonne University, CNRS. Available at http://copepodes.obs-banyuls.fr/en [Accessed December 02, 2024]

© copyright 2005-2024 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