Bradyetes inermis - Fiche d'espèce - Copépodes planctoniques marins

Bradyetes inermis Farran, 1905 (F,M)

Taxonomy

Ordre Calanoida

détails

Superfamille Clausocalanoidea

détails

Famille Aetideidae

détails

Genre Bradyetes

détails liste des espèces pour ce genre

Abréviations ou symboles

Références

Liste des auteurs étudiés

Farran, 1905 (p.32, Descr.F, figs.F); Rose, 1933 a (p.92, figs.F); Sewell, 1948 (p.499); Vervoort, 1952 b (n°43, p.3, figs.F); Bradford, 1969 b (p.502); Grice, 1972 a (p.224, figs.F,M, Rem.M); Markhaseva, 1996 (p.64, figs.F,M); Vives & Shmeleva, 2007 (p.549, figs.F,M, Rem.); Markhaseva & Schulz, 2006 a (p.143, 150, figs.F, Rem.)

Figures

Planche 1 issued from : G.P. Farran in Ann. Rep. Fish. Brch., Ireland, 1902-1903, II, App. 2, 1905. [Plate III, Figs.13-20].
Female (from W Ireland): 13-14, habitus (lateral and dorsal, respectively); 15, A1; 16, A2; 17, Mx1; 18, Mxp; 19, P1; 20, P2.

Species Bradyetes inermis - Planche 2 of morphological figures

Planche 2 issued from : G.P. Farran in Ann. Rep. Fish. Brch., Ireland, 1902-1903, II, App. 2, 1905. [Plate IV, Figs.13-14].
Female: 13, P3; 14, P4.

Species Bradyetes inermis - Planche 3 of morphological figures

Planche 3 issued from : E.L. Markhaseva & K. Schulz in Invert. Zool., 2006, 3 (2). [p.145, Fig.5]. With doubt. As Bradyetes cf. inermis.
Female (from S Atlantic): A-B, habitus (dorsal and lateral, respectively); C, posterior prosome and urosome (dorsal and left lateral view, respectively); E, rostrum (left lateral view); F, A2; G, Mx1 (praecoxal arthrite); H, Mxp (syncoxa); I, P1; J, P3 (exopodal segments 1 and 2); K, P4 (exopodal segments 1 and 2); L, P2.
Scales: A-B 0.5 mm; remaining figures 0.1 mm.
Above sea-bed at depths 4725-4469 m (41°08'S, 9°56'E) and 2889, 3005 m (60°38'S, 53°57'W and 58°16'S, 24°54'W, respectively).

Nota : Mx1 : praecoxal endite with 9 long and 2 small setae (length of smaller setae varies, sometimes 1 much smaller) ; coxal endite with 4 setae (1 longer and thicker than others) ; endopod with 12 setae ; exopod with 11 setae ; coxal epipodite with 9 setae. Mx2 : praecoxal and proximal coxal endites with 3 setae each ; proximal basal endite with 3 setae (1 thicker and more sclerotized, spine-like) ; distal basal endite plus ramus with 8 setae (6 long and 2 small) ; praecoxal and coxal endites with short surface spinules. Mxp : Coxal endite with 3 setae and small sensory appendage.

Species Bradyetes inermis - Planche 4 of morphological figures

Planche 4 issued from : E.L. Markhaseva & K. Schulz in Invert. Zool., 2006, 3 (2). [p.150, Table I].
Female: Selected character for B. inermis Farran and the form of Markhaseva & Schulz as B. cf. inermis.

Nota: Up to now descriptions of B. inermis are not very detailed and suffer from some inconsistencies, i.e. the lateral lobe of P1 endopod is figured as being well-developed by Grice (1972), but poorly in drawings by Farran (1905).

Planche 5 issued from : G.D. Grice in Crustaceana, 1972, 23 (3). [p.222, Figs.2-13].
Female (from off S Cap Cod): 2, habitus (lateral right side); 3, posterior end of prosome and urosome (dorsal); 4, A2; 5, Md (mandibular palp); 6, Md (cutting edge); 7, Mx2; 8, idem (other side); 9, Mxp; 10, P1; 11, P2; 12, P3; 13, P4.

Planche 6 issued from : G.D. Grice in Crustaceana, 1972, 23 (3). [p.225, Figs.14-22].
Male (from off S Cap Cod): 14, habitus (dorsal); 15, A1; 16, Md; 17, Mx1: 18, Mx2; 19, Mxp; 20, P5; 21, idem (other side); 22, distal end of exopod of left P5.

Nota: A1 with numerous setae and long aesthetasks proximally.
Mouth appendages greatly reduced, no mandible blade.
P5 biramous, endopods consist of one segment with the left one being more than twice the length of the right one.

Références complémentaires

Liste des auteurs étudiés

Pearson, 1906 (p.12); Grice & Hulsemann, 1965 (p.223); Vives, 1982 (p.291); Markhaseva, 1998 (p.250, Fig.4); Holmes, 2001 (p.45); Bradford-Grieve, 2004 (p.283)

Distribution

NZ: 3 + 3 douteux

Carte de distribution de Bradyetes inermis par zones géographiques

Distribution map of Bradyetes inermis for the Zone Antarctic and for the Zone Sub-Antarctic

Localisations

Glossaire géographique

Morocco-Mauritania, off Madeira, off S Cape Cod, off S & W Ireland, S Atlant., Antarct. (E South Shetland Is.)

Citations

N: 8

Dimensions (mm)

Références de auteurs concernant les dimensions

(58) F: 2,57; (213) F: 3,2-3; M: 2,52-2,44; (968) F: 2,95; {F: 2,57-3,20; M: 2,44-2,52}

Remarques

épi-méso & bathypélagique; ? hyperbenthique.
Pour Markhaseva et Schulz (2006 a), une redescription de cette espèce dans la localité type de l'atlantique nord est nécessaire pour confirmer sa distribution géographique, un doute subsistant sur l'identité des formes citées en atlantique nord et sud.

Voir aussi les remarques en anglais

Dernière mise à jour : 08/05/2016

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Razouls C., Desreumaux N., Kouwenberg J. and de Bovée F., 2005-2026. - Biodiversity of Marine Planktonic Copepods (morphology, geographical distribution and biological data). Sorbonne University, CNRS. Available at http://copepodes.obs-banyuls.fr/en [Accessed August 10, 2026]

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