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Calanoida ( Order ) |
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Clausocalanoidea ( Superfamily ) |
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Phaennidae ( Family ) |
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Brachycalanus ( Genus ) |
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Brachycalanus ordinarius (Grice, 1972) (F) | |
| | | | | | | Syn.: | Xanthocalanus ordinarius Grice, 1972 a (p.237, Descr.F, figs.F) | | | | Ref.: | | | Campaner, 1978 a (p.976, 977, Rem.); Ferrari & Markhaseva, 2000 (p.1070, figs.F); Bradford-Grieve, 2004 b (p.645, tab.2) |  issued from : G.D. Grice in Crustaceana, 1972, 23 (3). [p.234, Figs.101-108]. As Xanthocalanus ordinarius. Female (off S. Cap Cod): 101, habitus (lateral right side); 102, 4th and 5th thoracic segments and genital segment (dorsal); 103, genital segment (ventral); 104, idem (lateral); 105, A1; 106, A2; 108, Mx1. Nota: Head and 1st thoracic segment separate, 4th and 5th fused. Urosomal segments with \"scales\"; genital segment with rounded protuberances. Rostrum with 2 filaments. A1 reaches the 4th thoracic segment.
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 issued from : G.D. Grice in Crustaceana, 1972, 23 (3). [p.235, Figs.109-119]. As Xanthocalanus ordinarius. Female (off S. Cap Cod): 109 a, Mx2 (sensory appendages removed); 109 b, sensory appendages of Mx2; 110, Mxp; 111, P1 (anterior); 112, P1 (posterior); 113, P2 (posterior); 114, P3 (posterior), (2nd and 3rd exopod segments missing). 115, P3 (anterior), (2nd and 3rd exopod segments missing); 116, 2nd and 3rd exopod segments of P3 (posterior); 117, P4 (posterior); 118, 1st basal segment of P4 (anterior); 119 a, P5 (anterior); 119 b, idem (posterior). Nota: Swimming feet densely covered with \"scales\" and spines especially on posterior surfaces.
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 issued from : F.D. Ferrari & E.L. Markhaseva in Proc. Biol. Soc. Washington, 2000, 113 (4). [p.1075, Fig.8]. Female: A, posterior end of prosome and genital complex (lateral right side); B, A1 (segments 1-4, ventral toward right); C, idem (segments 5-11, ventral toward right); D, idem (segments 12-21, ventral right); E, idem (segments 22-24, ventral right); F, distal basal lobe and exopod of Mx2; G, worm-like setae of exopod of Mx2; H, Mxp (syncoxa and basis, with distal lobe omitted), anterior. Bars: 0.1 mm. Nota: Exopod of Mx2 with a distally constricted worm-like seta with a small lobe near the point of constriction.
| | | | | Compl. Ref.: | | | Bradford-Grieve, 2004 a (p.284) | | | | NZ: | 1 | | |
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Distribution map of Brachycalanus ordinarius by geographical zones
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| | | | Loc: | | | NW Atlant. (off S Cape Cod) | | | | N: | 2 | | | | Lg.: | | | (213) F: 3,4-2,92; {F: 2,92-3,40} | | | | Rem.: | bathypelagic (depths: 992-1000 m), hyperbenthic.
This species resembles Xanthocalanus obtusus Farran, 1905.
For Campaner (1978 a, p.976, 977), Xanthocalanus ordinarius Grice, 1972, is doubtless a new species of Bracchycalanus, differing from B. bjornbergae by size and the shape of the body in lateral view, the length of the rostral filaments, the fusion of thoracic segments 4 and 5, the length of the postero-lateral corners of last thoracic segment, the length and position of the subterminal seta of exopodite 7 of A2, the number and/or shape of the setae of endopodal segments 1-3 and inner lobe 1 of Mx1, the shape and size of the setae of the inner lobe 5 and endopodite of Mx2, of the terminal spine of the inner lobe 5 of Mx2 and the setaze of basipod 1-2 of Mxp, the shape, number and distribution of the spines on the dorsal and ventral surfaces of P1-P5. | | | Last update : 30/12/2014 | |
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 Any use of this site for a publication will be mentioned with the following reference :
Razouls C., Desreumaux N., Kouwenberg J. and de Bovée F., 2005-2024. - Biodiversity of Marine Planktonic Copepods (morphology, geographical distribution and biological data). Sorbonne University, CNRS. Available at http://copepodes.obs-banyuls.fr/en [Accessed November 21, 2024] © copyright 2005-2024 Sorbonne University, CNRS
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