Fiche d'espèce de Copépode
Calanoida ( Ordre )
    Clausocalanoidea ( Superfamille )
        Aetideidae ( Famille )
            Chiridius ( Genre )
Chiridius polaris  Wolfenden, 1911   (F,M)
Syn.: ? Chiridius gracilis : A. Scott, 1909 (p.42, figs.F); ? Tanaka, 1937 (p.255, figs.F);
? Chiridius obtusifrons : A. Scott, 1909 (p.43, figs.F);
Chiridius subantarcticus Park, 1978 (p.125, figs.F)
Ref.:
Wolfenden, 1911 (p.211, Descr.F, figs.F); Farran, 1929 (p.208, 229, Rem.F); Sewell, 1948 (p.574); Brodsky, 1950 (1967) (p.152, figs.F); Vervoort, 1957 (p.6, 53, figs.F, Rem.); Park, 1978 (p.124, Rem.); Gardner & Szabo, 1982 (p.214, figs.F,M); Markhaseva, 1996 (p.119, Descr.M, figs.F,M, Rem.); Bradford-Grieve & al., 1999 (p.879, 920, figs.F,M)
Espèce Chiridius polaris - Planche 1 de figures morphologiquesissued from : T. Park in Antarctic Res. Ser. Washington, 1978, 27. [p.126, Fig.14]. As Chiridius subantarcticus
Female: A, habitus (dorsal view); B, idem (left lateral side); C, posterior part of metasome and urosome (dorsal view); D, idem (left lateral side); E, Mx1; F, P1; G, P2; H, P3; I, P4. Legs 1-4: anterior view.


Espèce Chiridius polaris - Planche 2 de figures morphologiquesissued from : E.L. Markhaseva in Proc. Zool. Inst. RAN, St. Petersburg, 1996, 268. [p.124, Fig.94].
Female (from different localities). Ce: forehead (lateral); Gngenital field (ventral)..


Espèce Chiridius polaris - Planche 3 de figures morphologiquesissued from : E.L. Markhaseva in Proc. Zool. Inst. RAN, St. Petersburg, 1996, 268. [p.125, Fig.95].
Female (from different specimens). Re: exopod; P.md: mandibular palpGntbMd: gnathobase of Md (partial).


Espèce Chiridius polaris - Planche 4 de figures morphologiquesissued from : E.L. Markhaseva in Proc. Zool. Inst. RAN, St. Petersburg, 1996, 268. [p.126, Fig.96].
Female: distal part of metasome and urosome (left side, right side and dorsal, respectively from different specimens from different localities).


Espèce Chiridius polaris - Planche 5 de figures morphologiquesissued from : E.L. Markhaseva in Proc. Zool. Inst. RAN, St. Petersburg, 1996, 268. [p.127, Fig.97].
Male (from different localities). P.md: mandibular palp.


Espèce Chiridius polaris - Planche 6 de figures morphologiquesIssued from : K.A. Brodskii in Calanoida of the Far Eastern Seas and Polar Basin of the USSR. Opred. Fauna SSSR, 1950, 35 (Israel Program for Scientific Translations, Jerusalem, 1967) [p.153, Fig.66].
Female (from NW Pacif.): habitus (dorsal and lateral right side); S1, P1; S2, P2.
Nota: Abdomen 1/3 length of cephalothorax. Abdominal segments 1 to 3 with denticulate posterior margins. 2nd basipodal segment of P1 with small spinule on outer distal margin.


Espèce Chiridius polaris - Planche 7 de figures morphologiquesissued from : A. Scott in Siboga-Expedition, 1909, XIX a. [Plate XLIV, Figs.1-3]. As Chiridius ? obtusifrons. With doubt in C. polaris.
Female (from Molucca Passage): 1, habitus (dorsal); 2, forehead (lateral); 3, last thoracic and genital segments (left side).


Espèce Chiridius polaris - Planche 8 de figures morphologiquesissued from : W. Vervoort in B.A.N.Z. Antarctic Reseach Expedition, Report Ser. B, Vol. III., 1957 [Fig.31].
Female (from 66°05'S, 73°50'E): a-b, habitus (lateral and dorsal, respectively); c, forehead (lateral).


Espèce Chiridius polaris - Planche 9 de figures morphologiquesissued from : W. Vervoort in B.A.N.Z. Antarctic Reseach Expedition, Report Ser. B, Vol. III., 1957 [Fig.32].
Female: a, d, posterior part cephalothorax and urosome (lateral and dorsal, respectively); b, right A2; c, right Md (mandibular palp)


Espèce Chiridius polaris - Planche 10 de figures morphologiquesissued from : W. Vervoort in B.A.N.Z. Antarctic Reseach Expedition, Report Ser. B, Vol. III., 1957 [Fig.33].
Female: a, right P1 (anterior); b, left P2; c, left P3; c', detail of spinules along outer edge of terminal spine; d, left P4; e, right Mx2.


Espèce Chiridius polaris - Planche 11 de figures morphologiquesissued from : W. Vervoort in B.A.N.Z. Antarctic Reseach Expedition, Report Ser. B, Vol. III., 1957 [Fig.34].
Female: a-b, right A1; c, Md (cutting edge); d, right Mx1; e, right Mxp.


Espèce Chiridius polaris - Planche 12 de figures morphologiquesissued from : R.N. Wolfenden in Die Marinen Copepoden der Deutschen Südpolar-Expedition 1901-1903, 1911. [p.211, Fig.6].
Female (from Antarctic): a-b, habitus (lateral and dorsal, respectively).


Espèce Chiridius polaris - Planche 13 de figures morphologiquesissued from : R.N. Wolfenden in Die Marinen Copepoden der Deutschen Südpolar-Expedition 1901-1903, 1911. [Pl.XXIV, Figs.9-12].
Female: 9, Mxp; 10, P1; 11, P2; 12, P4.


Espèce Chiridius polaris - Planche 14 de figures morphologiquesChiridius polaris female:
1 - Exopod of Mx1 with 10 setae. Points of last thoracic segment reaching to the end of first third of genital segment.
2 - Endopodal segment 2 of Md wuith 8 (7 terminal and 1 posterior) setae.
3 - Points of last thoracic segment reaching the end of first third of genital segment (sometimes reaching or exceeding its midlength). Exopodal segment 3 of P1 with external spine 1.04-1.26 longer than external spine of segment 2.


Espèce Chiridius polaris - Planche 15 de figures morphologiquesChiridius polaris male:
1 - Points of last thoracic segment not longer than genital segment.
2 - Right P5 longer than left. Exopodal segments 1 and 2 of P1 with external spines reaching more longer than midlength of the next segment.
3 - Points of last thoracic segment reaching the posterior border of genital segment. Endopodal segment 1 of Mxp with 3 medial setae.
4 - Endopodal segment 1 of P1 with external spine reaching and exceeding the base of following spine.

Ref. compl.:
Gowing & Wishner, 1986 (p.939, tab.3, gut contents); Zmijewska, 1987 (tab.2a); Hattori, 1991 (tab.1, Appendix); Razouls & al., 2000 (p.343, tab. 4, 5, Appendix); Park, W & al., 2004 (p.464, tab.1); Schnack-Schiel & al., 2008 (p.1045: Tab.2); Park & Ferrari, 2009 (p.143, Table 4, 6: bipolar distribution, Appendix 1, biogeography from Southern Ocean)
NZ: 5 + 2 douteuses

Carte de distribution de Chiridius polaris par zones géographiques
Espèce Chiridius polaris - Carte de distribution 3issued from : W. Vervoort in B.A.N.Z. Antarctic Reseach Expedition, Reports - Ser. B, Vol. III, 1957 [Fig.132]
Chart showing the geographical distribution (white triangle) in the seas surrounding the Antarctic continent.
Nota: In this chart the area frequented by whaling vessels has been hatched. The Antarctic circle (66°.5 S) has been drawn as a broken line. The numbers I to VI refer to the sectors into which the Antarctic seas are divided according to Mackintosh (1942) (after Vervoort, 1951).
Loc:
Antarct. (Peninsula, W Weddell Sea, S Atlant., Indian, SW & SE Pacif.), sub-Antarct. (SE Pacif.), ? Indonesia-Malaysia, ? Japan, off Sanriku, Kuril-Kamtchatka Trench, British Columbia, off California (Santa Catalina Basin).

Type locality: Antarctic (South of 60° in the Indian sector)
N: 14
Lg.:
(5) F: 2,6; (10) F: 2,75; (20) F: 3,44; 3,36; (22) F: 3,5; (25) F: 4,3; (35) F: 4,14; (37) F: 4,25-3,3; M: 3,8-3,55; {F: 2,60-4,25; M: 3,55-3,80}
Rem.: méso à abyssopélagique.
Sampling depth (Antarct., sub-Antarct.) : 0-1000 m.
Il apparaît quelques désaccords sur les synonymies entre Brodsky (1950) et les auteurs ultérieurs.
Voir aussi les remarques en anglais
Dernière mise à jour : 21/01/2016

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Razouls C., Desreumaux N., Kouwenberg J. et de Bovée F., 2005-2024. - Biodiversité des Copépodes planctoniques marins (morphologie, répartition géographique et données biologiques). Sorbonne Université, CNRS. Disponible sur http://copepodes.obs-banyuls.fr [Accédé le 19 mars 2024]

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