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Cyclopoida ( Order ) |
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Oithonidae ( Family ) |
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Oithona ( Genus ) |
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Oithona hamata Rosendorn, 1917 (F) | |
| | | | | | | Ref.: | | | Rosendorn, 1917 (p.302); 1917 a (p.15, figs.F); Kiefer, 1929 g (p.5, Rem.F); Sewell, 1948 (p.430); Lindberg, 1955 a (p.465: Rem.); Wellershaus, 1970 (p.484, Rem.F); Kos, 1972 (Vol.I, figs.F, Rem.); Shuvalov, 1980 (p.101, figs.F); Nishida, 1985 a (p.49, Redescr.F, figs.F, p.132); Yoo & Lim, 1993 (p.91, 94, 97, Table 1); Bradford-Grieve & al., 1999 (p.886, 966, figs.F); Vives & Shmeleva, 2010 (p.59, figs.F,M, Rem.) |  Issued from : S. Nishida in Bull. Ocean Res. Inst., Univ. Tokyo, 1985, No 20. [p.50, Fig.23]. Female (from off SE Sri Lanka): a, habitus (dorsal); b, forehead (lateral); c, anal segment and caudal rami (dorsal); d, A1; e, A2; f, Md; g, Md (biting edge).
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 Issued from : S. Nishida in Bull. Ocean Res. Inst., Univ. Tokyo, 1985, No 20. [p.51, Fig.24]. Female: a, thoracic segment 5 and genital segment partial (lateral left side); b, Mx1; c, Mx2; d, Mxp; e, P1; f, P2; g, P3; h, P4.
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 issued from : I. Rosendorn in Wiss. Ergebn. dt. Tiefsee-Exped. \"Valdiviella\", 1917, 23. [p.15, Fig.5]. Female: a, habitus (dorsal); b, forehead (dorsal); c, urosomal segments 1 and 2; d, forehead (lateral); e, Md (mandibular palp); f, Mx1. Nota: Proportion of lengths (p.cent) Prosome : 50.9, Urosome : 49.1. Relative lengths of urosomal segments and caudal rami8 : 8: 16: 9: 9: 7: 7.
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 issued from : I. Rosendorn in Wiss. Ergebn. dt. Tiefsee-Exped. \"Valdiviella\", 1917, 23. [p.16, Fig.6]. Female: a, P1; b, P2; c, P3; d, P4. Nota: Setal formula of the exopod swimming legs P1 to P4 (Se = outer setae ; Si = inner setae), P1 : 1, 1, 2 Se ; 0, 1, 4 Si ; P2 : 1, 0, 2 Se ; 0, 1, 5 Si ; P3 : 1, 0, 1 Se ; 0, 1, 5 Si ; P4 : 0, 0, 1 Se ; 0, 1, 5 Si .
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 issued from : V.S. Shuvalov in Opred. Faune SSSR, Nauka, Leningrad, 1980, 125. [p.102, Fig.17]. Female: 1-2, habitus (dorsal); ahm, A1; 3, habitus (lateral); 4, same; 5-6, forehead (dorsal); 7, same (another specimen); 8-9, thoracic segments 4 and 5, genital segment (dorsal and lateral, respectively); 10, postrior part of urosome.
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 Morphological characters of Oithona hamata female :
1 - Anterior part of prosome produced into pointed rostrum in dorsal view.
2 - Exopod 3rd segment of P1 with 2 outer marginal spines. 3 - Number of setae in exopod of Md more than 3, and prosome length than 3.0 times of prosome width. 4 - Outer marginal spine in exopod 3rd segment of P4 curved smoothly. 5 - Endopod of Md with 4 setae, genital segment ventrally without tuft of hairs.
| | | | | Compl. Ref.: | | | Grice & Hart, 1962 (p.287, table 3, p.293: Rem.); Björnberg, 1973 (p.356, 388); Kovalev & Shmeleva, 1982 (p.85); Greze & al., 1985 (p.8); Yoo, 1991 (tab.1); Siokou-Frangou, 1999 (p.478); Uysal & al., 2002 (p.18, tab.1); Uysal & Shmeleva, 2012 (p.909, Table I) | | | | NZ: | 7 | | |
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Distribution map of Oithona hamata by geographical zones
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| | | | | | | | | | | |  Issued from : S. Nishida in Bull. Ocean Res. Inst., Univ. Tokyo, 1985, No 20. [p.132, Fig.81].
Indo-Pacific geographical distribution of Oithona hamata. |
| | | | Loc: | | | Atlant. (equatorial), G. of Guinea, off Amazon, off Cape Cod, off SE New York, Medit. (Alboran Sea, W Basin, G. of Saronikos, Lebanon Basin), Arabian Gulf, Indian (equatorial), China Seas (Yellow Sea), S Korea (Cheju Is.), Pacif. (tropical), Chile (in Björnberg, 1973) | | | | N: | 10 | | | | Lg.: | | | (627) F: 1,35-1,29; (649) F: 1,06; (880) F: 1,06-1,1; {F: 1,06-1,35} | | | | Rem.: | epiplagic.
For Nishida (1985, p.49) the specimens agree with Rosendorn's (1917) description except for the presence of inner marginal seta on exopodal segment 1 of P1-P4 in the former. The species is distinguished from closely allied O. tenuis by the shape of rostrum and the absence of inner marginal seta on the basal segment of A2. | | | Last update : 28/11/2019 | |
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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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