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Fiche d'espèce de Copépode |
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Cyclopoida ( Ordre ) |
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Oithonidae ( Famille ) |
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Oithona ( Genre ) |
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Oithona bowmani Rocha, 1985 (F,M) | |
| | | | | | | Syn.: | Oithona amazonica: Ferrari & Bowman, 1980 (p.5, figs.F, Rem.);
Oithona gessneri : Cipolli & Carvalho, 1973 (part.) | | | | Ref.: | | | Rocha, 1985 (p.217, figs.F,M) |  issued from : F.D. Ferrari & T.E. Bowman in Smiths. Contr. Zool., 1980, 312. [p.7, Fig.2 a-h]. As Oithona amazonica. Female (off mouth of Amazon): a, habitus (lateral right side); b, urosome (lateral (right side); c, caudal ramus (dorsal); d, Md; e, P1; f, P2; g, P3; h, P4. Nota: Prosome/Urosome = 1.3-1.4. Exopodal segments of P1 with 1-1-3 external spines; terminal seta on segment 3 looks like the other 4 internal setae, the lateral membrane is absent and both margins are plumose. External spines of exopodal segmets: P2: 1-1-3; P3: 1-1-1; P4: 0-0-1. Exopodal segmets 3 of P2-4 with terminal setae well developed. Knob near genital opening armed with a minute, slender spine.
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 issued from : C.E.F. Rocha in Rev. Hydrobiol. trop., 1985, 18 (3). [p.218, Figs.22-29]. Female (from Tocantins River): 22-23, habitus (dorsal and lateral, respectively); 24, caudal ramus; 25, Md (mandibular palp); 26, Mx1; 27, P1; 28, P2; 29, P3. Scale bars = 0.050 mm. Nota: - Ratio Prosome : Urosome: 1.3-1-1.4 : 1 (in 20 specimens) and 1.2-1.3 : 1 (in 10 specimens). - Forehead truncate in dorsal view (fig.22) and rounded laterally (fig.23). - Rostrum absent. - Caudal rami twice longer than wide and little shorter than anal somite; inner apical seta 2.5 times longer than outer apical seta; dorsal seta longer than outer median apical seta; inner median apical seta twice length of outer median apical seta. - A1 with 13 segments, reaching prosome-urosome articulation (when bent backwards). - Md with 5 setae on endopod; basis with 2 spines, the outermost little more than twice longer than the innermost, both armed with spinules. - Mx1 with 3 setae on basis and 2 slender, short setae on endopod. - Number of outer spines of exopod of P1-P4: 1. 1. 3; 1. 1. 3; 1. 1. 1; 0. 0. 1. - P1 with only proximal spine of exopodal segment 3 with hyaline marginal membrane; other outer spines very finely serrate; apical spine seta-like, being finely serrate externally and plumose internally. - Endopodal segment 3 pf P4 with proximal seta the thickest and longest of endopod and with serrate flange on distal 2/3. - Terminal segment of P5 with seta reaching posterior border of genital somite. - Genital somite with a knob near genital opening armed with a minute spine.
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 issued from : C.E.F. Rocha in Rev. Hydrobiol. trop., 1985, 18 (3). [p.219, Figs.30-37]. Female: 30, P4 (the arrow indicates the modified seta); 31, P5 and genital segment (lateral). Male: 32, habitus (lateral); 33, pore signature of the cephalosome flap; 34, caudal rami; 35, Md (mandibular palp); 36, exopod of P1; 37, partial and lateral views of the urosome bearing P5 and P6. Scale bars = 0.050 mm. Nota Male: - Cephalosome protruded laterally into a flap extending beyond posterior border of thoracic segment 1. Pore signature of flap as in fig.33 (in 4 specimens). - Caudal rami about 1.5 times longer than wide and with armature as in fig.34. - Md with 5 setae on endopod. - Exopod of P1 with 3 marginal spines as in female. - All setae of P1-P4 plumose. - P5 and P6 as in fig.37.
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Carte de distribution de Oithona bowmani par zones géographiques
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| | | | Loc: | | | Brazil (Xingu, Maratapa Bay, Acara Grande River, Tucurui) | | | | N: | 3 | | | | Lg.: | | | (870) F: 0,56-0,62; 0,65-0,7; M: 0,58-0,62; 0,64-0,66; { F: 0,56-0,70; M: 0,58-0,66} | | | | Rem.: | saumâtre.
Voir aussi les remarques en anglais | | | Dernière mise à jour : 12/12/2017 | |
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 Toute utilisation de ce site pour une publication sera mentionnée avec la référence suivante :
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 05 décembre 2024] © copyright 2005-2024 Sorbonne Université, CNRS
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