Species Card of Copepod
Calanoida ( Order )
    Clausocalanoidea ( Superfamily )
        Phaennidae ( Family )
            Phaennocalanus ( Genus )
Phaennocalanus unispinosus  Markhaseva, 2002   (F)
Markhaseva, 2002 (p.316, figs.F)
Species Phaennocalanus unispinosus - Plate 1 of morphological figuresissued from : E.L. Markhaseva in Sarsia, 2002, 87. [p.313, Figs.1-10].
Female (80°00N, 134°56'E): 1-2, habitus (dorsal and lateral, respectively); 3, pedigerous somite 5 and genital segment (dorsal); 4, pedigerous somite 5 and urosome (lateral, left side); 5, rostrum (ventral view); 6, idem (lateral); 7, A1 (segments 1-8); 8, A1 (segments 9-17); 9, A1 (segments 18-24); 10, A2.
Scale bar = 0.1 mm.

Nota: A1 24-segmented, reaching the posterior end of prosome; 8th, 13th and 18th segments with knife-like aesthetascs (similar to those in Brachycalanus), aesthetascs on the 2nd, 3rd, 4th and 11th segments not knife-like. A2 exopod 6-segmented, slightly shorter than endopod

Species Phaennocalanus unispinosus - Plate 2 of morphological figuresissued from : E.L. Markhaseva in Sarsia, 2002, 87. [p.314, Figs.11-15].
Female: 11, Md (mandibular palp); 12, Md (gnathobase); 13, Mx1; 14, Mx2; 15, Mxp.
Scale bar = 0.1 mm.

Nota: Inner lobe of Mx1 with 9 setae (4 posterior and 1 anterior); lobe 2 with 5 setae; lobe 3 with 4 setae; lobe 4 with 5 setae; endopod with segments nearly completely fused, with 10 setae; exopod with 10 setae; outer lobe with 7 long plus 2 short setae. Mx2 distal basal lobe plus exopod with 1 worm-like and 7 brush-like sensory setae; the brush-like setae are nearly the same length, but not identical in structure: there are 2 thick brushes with big heads and 5 brushes are thin with small heads Endopod of Mxp 5-segmented with 4, 4, 3, 4, and 4 setae, respectively; syncoxa with all setae sclerotized on praecoxal lobes: 1, 2 and 2 setae from proximal to distal and 3 setae on coxal lobe; basis with 3 setae proximally and 2 setae distally.

Species Phaennocalanus unispinosus - Plate 3 of morphological figuresissued from : E.L. Markhaseva in Sarsia, 2002, 87. [p.315, Figs.16-20].
Female: 16-19, P1 to P5; 20, P5.
Scale bar = 0.1 mm.

Nota: P5 3-segmented, lacking any surface spinulation, with only 1 small terminal spine on segment 3.

Compl. Ref.:
Kosobokova & al., 2011 (p.29, Table 2, Rem.: Arctic Basins)
NZ: 1

Distribution map of Phaennocalanus unispinosus by geographical zones
Arctic (Eastern Nansen Basin, Amundsen Basin)
N: 2
(879) F: 4,15; {F: 4,15}
Rem.: bathypelagic (in vertical haul 3200-1000 m).
Last update : 28/01/2015
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Razouls C., Desreumaux N., Kouwenberg J. and de Bovée F., 2005-2023. - Biodiversity of Marine Planktonic Copepods (morphology, geographical distribution and biological data). Sorbonne University, CNRS. Available at http://copepodes.obs-banyuls.fr/en [Accessed December 05, 2023]

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Marine Planktonic Copepods

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