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Calanoida ( Order ) |
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Calanoidea ( Superfamily ) |
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Megacalanidae ( Family ) |
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Bathycalanus ( Genus ) |
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Bathycalanus tumidus Bradford-Grieve, Blanco-Bercial & Boxshall, 2017 (F) | |
| | | | | | | Ref.: | | | Bradford-Grieve, Blanco-Bercial & Boxshall, 2017 (p. 108, Descr. F, figs. F, phylogeny) |  Issued from : J.M. Bradford-Grieve, L. Blanco-Bercial & G.A. Boxshall in Zootaxa, 2017, 4229 (1). [p.109, Fig.67]. Female (from 29.533°N, 137.233°E): A, habitus (dorsal); B, forehead (dorsal view); C, anterior head (lateral); D, urosome (dorsal); ; E, genital double-somite (lateral); F, A1; G, P1 (posterior view). Scale bars: 1.0 mm on all figure Nota; - Forehead in dorsal view produced into distinct short rounded projection located dorsal to base of rostrum and bearing pair of small stout divergent spine-like processes. - In lateral view , Posterolateral corners of pediger 5 symmetrical, rounded. - Genital double-somite bulbous, symmetrical in dorsal view, slightly wider than long, widest width at approximately midlength, with small anteroventral genital operculum, seminal receptacles not observed. - A1 26-segmented (ancestral segments II-IV fused and X-XI partly separate). - P1 exopod with articulation between exopodal segments 2 and 3 well-developed.
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 Issued from : J.M. Bradford-Grieve, L. Blanco-Bercial & G.A. Boxshall in Zootaxa, 2017, 4229 (1). [p.110, Fig.68]. Female A1 ancestral segments: A, segments I-XIV; B, segments XV-XVIII; C, segments XIX-XXII; D, segments XXIII-XXVI; E, segments XVII-XXVIII; F, detail of segment XXVIII. Scale bars: 1.0 mm (A-E); 0.1 mm (F). Nota: - Anterior and posterior borders of ancestral segments XVI-XXI smooth.
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 Issued from : J.M. Bradford-Grieve, L. Blanco-Bercial & G.A. Boxshall in Zootaxa, 2017, 4229 (1). [p.111, Fig.69]. Female: A, A2; B, Md palp; C, Mx1; D, Mx2; E, Mxp. Scale bars: 1.0 mm (D, E); 0.1 mm (A, C, B). Nota: - A2 exopod segment IV with short seta extending beyond distal border of segment VIII and bearing short setules. - Mx1 praecoxal arthrite with 15 setae incuding 4 on posterior surface and 2 small anterior surface setae; coxal endite with 1 seta; basal endites 1 and 2 with 2 and 4 setae, respectively; basis and endopod segments 1 and 2 fused although demarcation between segments visible, segment 3 dseparate; endopodal segments with 2 §subequal), 2 (subequal), 5+1 smaller anterior surface seta. - Mxp syncoxal endite 4 with large toothed seta extending half way along endopodal segment 2.
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 Issued from : J.M. Bradford-Grieve, L. Blanco-Bercial & G.A. Boxshall in Zootaxa, 2017, 4229 (1). [p.112, Fig.70]. Female: A, P2 (anterior view); B, P3 (anterior view); C, P4 (anterior view); D, P5 (posterior view). Scale bar = 1.0 mm on all figures.
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 Issued from : J.M. Bradford-Grieve, L. Blanco-Bercial & G.A. Boxshall in Zootaxa, 2017, 4229 (1). [p.91, Table 10]. Morphological characters after identification key of Bathycalanus females and males. Compare to other species of genus. Main characters identification after species key : 1 - Mx1 coxal endite with 1 seta. 2 - Mx1 praecoxal arthrite with 4 posterior surface setae; basal endite 2 with 4 setae (male unknown).
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Distribution map of Bathycalanus tumidus by geographical zones
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| | |  Issued from : J.M. Bradford-Grieve, L. Blanco-Bercial & G.A. Boxshall in Zootaxa, 2017, 4229 (1). [p.84, Fig.46].
Distribution of Bathycalanus species;
Bathycalanus richardi (filled squareç; Bathycalanus bradyi (filled triangle); Bathycalanus milleri (open triangle); Bathycalanus dentatus (open square); Bathycalanus tumidus (open circle); Bathycalanus adornatus (open diamond); Bathycalanus pustulosus (filled star); Bathycalanus unicornis ( (filled diamond); Bathycalanus bucklinae (filled circle); Bathycalanus eximius (cross). |
| | | | Loc: | | | Eastern and Western North Pacific and the Atlantic off West Africa near the Cape Verde Islands.
Type locality: 29.5333° N, 137.233° E. | | | | N: | 1 | | | | Lg.: | | | (1316) F: 9,3-10,90; {F: 9,30-10,90} | | | | Rem.: | Abyssopelagic species 2000-3000 m.
For Bradford -Grieve & al; (2017, p.108) the species is very like Bathycalanus richardi except the genital double-somite is of a bulbous shape in dorsal view, widest at midlength and wider than long; Mx1 praecoxal arthrite has 4 posterior surface setae, unnlike any other species of Bathycalanus.
After the authors cited, the genetic distance data suggest that this species may represent an as yet unrecognised genus. | | | Last update : 13/08/2018 | |
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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 April 19, 2024] © copyright 2005-2024 Sorbonne University, CNRS
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