Chiridius polaris - Fiche d'espèce - Copépodes planctoniques marins

Chiridius polaris Wolfenden, 1911 (F,M)

Taxonomy

Ordre Calanoida

détails

Superfamille Clausocalanoidea

détails

Famille Aetideidae

détails

Genre Chiridius

détails liste des espèces pour ce genre

Abréviations ou symboles

Synonymie

? 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)

Références

Liste des auteurs étudiés

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)

Figures

Planche 1 issued 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.

Species Chiridius polaris - Planche 2 of morphological figures

Planche 2 issued 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)..

Species Chiridius polaris - Planche 3 of morphological figures

Planche 3 issued 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).

Species Chiridius polaris - Planche 4 of morphological figures

Planche 4 issued 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).

Species Chiridius polaris - Planche 5 of morphological figures

Planche 5 issued 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.

Species Chiridius polaris - Planche 6 of morphological figures

Planche 6 Issued 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.

Species Chiridius polaris - Planche 7 of morphological figures

Planche 7 issued 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).

Species Chiridius polaris - Planche 8 of morphological figures

Planche 8 issued 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).

Species Chiridius polaris - Planche 9 of morphological figures

Planche 9 issued 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)

Species Chiridius polaris - Planche 10 of morphological figures

Planche 10 issued 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.

Species Chiridius polaris - Planche 11 of morphological figures

Planche 11 issued 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.

Species Chiridius polaris - Planche 12 of morphological figures

Planche 12 issued 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).

Species Chiridius polaris - Planche 13 of morphological figures

Planche 13 issued 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.

Planche 14 Chiridius 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.

Planche 15 Chiridius 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.

Références complémentaires

Liste des auteurs étudiés

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)

Distribution

NZ: 5 + 2 douteux

Carte de distribution de Chiridius polaris par zones géographiques

Distribution map of Chiridius polaris for the Zone Antarctic and for the Zone Sub-Antarctic

Cartes et graphiques additionels

Espèce Chiridius polaris - Carte de distribution 3

Carte 3 issued 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).

Localisations

Glossaire géographique

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)

Citations

N: 14

Dimensions (mm)

Références de auteurs concernant les dimensions

(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}

Remarques

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