Fiche d'espèce de Copépode
Calanoida ( Ordre )
    Clausocalanoidea ( Superfamille )
        Phaennidae ( Famille )
            Xanthocalanus ( Genre )
Xanthocalanus polarsternae  Markhaseva, 1998   (F,M)
Syn.: Xanthocalanus sp. nov.1 Sirenko & al., 1996 (p.349)
Ref.:
Markhaseva, 1998 (p.414, figs.F,M)
Espèce Xanthocalanus polarsternae - Planche 1 de figures morphologiquesissued from : E.L. Markhaseva in J. Mar. Syst., 1998, 15. [p.416, Fig.2].
Female (from 77°04,7-77°11'' N, 125°10,7'-126°25' E).
Ce = forehead (lateral); R = rostrum (ventral); PC = posterior corners of prosome; UR = urosome; Pmd = mandibular palp; Gnth md = gnathobase of Md; Ri = endopod.
Scale bars: 0.1 mm.

Nota : Average ratio prosome length : urosome length 3.8. A1 varies in length (may reach the last segment of prosome or to the posterior part of genital segment. Exopod of A2 1.5 times longer than endopod. Inner lobe1 of Mx1 with 8 apical and 4 posterior setae, inner lobes 2 and 3 with 3 and 4 setae, respectively ; basis with 5 setae near the base of endopod, endopod with 8 setae, exopod with 10 setae an douter lobe with 9 setae. 1st to 5th endites of Mx2 with 5, 3, 4, 3, 4 setae, respectively ; at both the 3rd and 5th endite one of the setae is transformed into a sensory appendage. Endopodite segments 2 to 5 with 4, 4, 3, 3+1 and 4 setae, respectively.


Espèce Xanthocalanus polarsternae - Planche 2 de figures morphologiquesissued from : E.L. Markhaseva in J. Mar. Syst., 1998, 15. [p.417, Fig.3].
Male .
Ce = forehead (lateral); R = rostrum (ventral); Pr = prosome; PC = posterior corners of prosome; UR = urosome; Pmd = mandibular palp; Gnth md = gnathobase of Md.
Scale bars: 0.1 mm.

Nota : Prosome length : urosome length mean ratio = 3.4. The setation of oral parts reduced in comparison with females. Md palp base with 2 setae. Inner lobe 1 of Mx1 with 3 posterior and 7 terminal setae, inner lobe 2 and 3 with 3 setae each ; endopod with 6 setae. Mxp syncoxa with 1 seta in proximal group, with only 1 brush-like setae in medial group and 3 setae in the distal group. P5 uniramous, 5-segmented, both left and right legs are nearly of the same length.

Ref. compl.:
Bradford-Grieve, 2004 (p.285); Kosobokova & al., 2011 (p.29, Table 2, Rem.: Amundsen Basin)
NZ: 1

Carte de distribution de Xanthocalanus polarsternae par zones géographiques
Loc:
Arct. (Laptev Sea, Amundsen Basin)
N: 2
Lg.:
(281) F: 4,8-4,45; M: 3,9-3,8; {F: 4,45-4,80; M: 3,80-3,90}
Rem.: depths: 180-530 m. Bathypelagic hyperbenthic.
Voir aussi les remarques en anglais
Dernière mise à jour : 02/02/2015

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

Razouls C., de Bovée F., Kouwenberg J. et Desreumaux N., 2005-2017. - Diversité et répartition géographique chez les Copépodes planctoniques marins. Disponible sur http://copepodes.obs-banyuls.fr 
[Accédé le 24 juin 2017]

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