Fiche d'espèce de Copépode
Calanoida ( Ordre )
    Epacteriscoidea ( Superfamille )
        Epacteriscidae ( Famille )
            Cryptonectes ( Genre )
Cryptonectes brachyceratus  Fosshagen & Iliffe, 2004   (F)
Ref.:
Fosshagen & Iliffe, 2004 (p.122, figs.F)
Espèce Cryptonectes brachyceratus - Planche 1 de figures morphologiquesissued from : A. Fosshagen & T.A. Iliffe in Sarsia, 2004, 89. [p.124, Fig.4].
Female (from Bahamas): A-B, habitus (lateral and dorsal, respectively); C, rostrum; D, A1; E, A2; F, Md.

Nota : Body with ratio of prosome length to urosome length 2.7 :1. Cephalosome with middle of lateral margin deeply concave. Urosome 3-segmented ; last two urosomites of equal length, last one with distal undulate frill. Caudal rami symmetrical, seta II short and spinous. Rostrum elongate lobe with 2 filaments at tip.
A1 25-segmented, short, reaching slightly beyond 1st pedigerous somite ; segments I-III fused, segments VIII-XIII much condensed ; seta on segment IX greatly elongate, aesthetascs on segments XIV-XVIII relatively well developed, elements on terminal segment relatively short.
A2 with exopod about double length of endopod ; 1st segment of endopod with 2 equal setae near distal inner margin, distal segment well developed with 9 setae on inner lobe and 7 setae on elongate terminal lobe.
Md with very strong gnathobase bearing strong bifid ventral-most tooth, rounded at tip ; row of 4 rounded major teeth with minor additional teeth, and unipinnate dorsal seta ; palp with reduced 1-segmented endopod bearing 3 setae ; exopod 4-segmented and normally developed.


Espèce Cryptonectes brachyceratus - Planche 2 de figures morphologiquesissued from : A. Fosshagen & T.A. Iliffe in Sarsia, 2004, 89. [p.125, Fig.5].
Female: A, Mx1; B, Mx2; C, Mxp; D, P1; E, P2; F, P3.

Nota :
Mx1 praecoxal arthite with 12 elements, most spinous setae relatively long ; coxal endite and basal endites wit 2, 2 and 1 setae, respectively ; coxal epipodite with 5 long setae ; endopod 2-segmented with 2 small setae along inner margin and 5 terminal long setae ; exopod with 8 setae concentratd distally.
Mx2 with well-developed endites on syncoxa bearing relatively short and stout setae, proximal endite with 5 setae ; basal endite situated near middle of inner margin ; endopod much condensed with strong claw-like spinous setae.
Mxp with minute seta on praecoxal endite, most setae on coxa rather spinous and curved ; basis with 3 setae along distal margin, proximal and distal seta of subequal length, middle seta short ; endopod 5-segmented with first two segments partially fused, 1st segment with 1 short and 1 long modified seta (not shown in figure), most long setae on endopod modified distally with long setules and ending in thin flexible tip.


Espèce Cryptonectes brachyceratus - Planche 3 de figures morphologiquesissued from : A. Fosshagen & T.A. Iliffe in Sarsia, 2004, 89. [p.127, Fig.6].
Female: A, P4; B, P5.

Male: C, urosome (dorsal); D, right A1; E, P5 (posterior view); F, right exopod of P5 (anterior view).
Nota: Body with ratio of prosome length to urosome length 2.6:1. Urosome 4-segmented; distinct striate frill on posterior margin of urosomites 2 and 3. Rostrum as in female. Right A1 21-segmented with segments II-IV fused; anteroventral margin of segment 20 with pointed process. P5 asymmetrical , greatest modifications distally on exopods; left basis with inner margin produced into long pointed process; 2nd endopodal segment longer and broader on right than on left side, with distal outer margin on right side produced into curved and rounded process; left exopod 2-segme,yrd, 1st segment with strong smooth outer spine, 2nd segment with 2 unequal setae along outer margin, proximal seta shortest; outer corner of segment transformed into falcate process, seta with bulbous base situated medially on inner margin of segment; right esopod 3-segmented, 1st and 2nd segments with strong and smooth outer spine, 1 on 2nd segment slightly curved and mongest, 3rd segment bearing falcate process with long thin outer seta and thick inner seta near base.

NZ: 1

Carte de distribution de Cryptonectes brachyceratus par zones géographiques
Loc:
Bahamas (anchialine caves)
N: 1
Lg.:
(884) F: 1,16; 1,25; {F: 1,16 – 1,25}
Rem.: Anchialine caves
Dernière mise à jour : 02/01/2015

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

Razouls C., Desreumaux N., Kouwenberg J. et de Bovée F., 2005-2021. - Biodiversité des Copépodes planctoniques marins (morphologie, répartition géographique et données biologiques). Sorbonne Université, CNRS. Disponible sur http://copepodes.obs-banyuls.fr [Accédé le 02 décembre 2021]

© copyright 2005-2021 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