Species Card of Copepod
Calanoida ( Order )
    Clausocalanoidea ( Superfamily )
        Aetideidae ( Family )
            Gaetanus ( Genus )
Gaetanus paracurvicornis  Brodsky, 1950   (F, juv.M)
Brodsky, 1950 (1967) (p.168, figs. juv. 5: F,M); Tanaka & Omori, 1970 (p.138, Rem.); Park, 1975 a (p.10, Rem.); Bradford & Jillett, 1980 (p.48); Markhaseva, 1980 (p.626, Descr.F, figs.F); 1996 (p.211, figs.F)
Species Gaetanus paracurvicornis - Plate 1 of morphological figuresissued from : E.L. Markhaseva in Proc. Zool. Inst. RAN, St. Petersburg, 1996, 268. [p.212, Fig.167].
Female (from NW Pacif.: Kuril Trench). Ce: forehead (lateral and dorsal, respectively); CP4: coxopod of P4.

Species Gaetanus paracurvicornis - Plate 2 of morphological figuresIssued from : K.A. Brodskii in Calanoida of the Far Eastern Seas and Polar Basin of the USSR. Opred. Fauna SSSR, 1950, 35 (Israel Program for Scientific Translations, Jerusalem, 1967) [p.168, Fig.84].
Female juv.5 (from NW Pacif.): habitus (dorsal); S4B1, distal inner largin of basipodal segment 1 of P4.

Male juv.5: forehead (lateral).

Species Gaetanus paracurvicornis - Plate 3 of morphological figuresissued from : E.L. Markhaseva in Zool. Zh., 1980, 59 (4). [p.627, Figs.1, 4-11].
Female (from 45°20'-46°04'N, 153°03'-153°55'E): 1, habitus (lateral); 4, head (lateral); 5-6, posterior prosome and urosome (lateral and dorsal, respectively); 7, Mxp; 8, syncoxa of Mxp); 9, P1; 10, P2; 11, P4.

Species Gaetanus paracurvicornis - Plate 4 of morphological figuresissued from : E.L. Markhaseva in Zool. Zh., 1980, 59 (4). [p.627, Figs.1-3].
Females: Comparison between the most closely related species G. paracurvicornis (1), G. curvicornis (2) and G. latifrons (3).
2 and 3 from Sars, 1924-1925.

Species Gaetanus paracurvicornis - Plate 5 of morphological figuresGaetanus paracurvicornis female:
1 - Anterior part of cephalon with frontal spine.
2 - Exopodal segment 1 of A2 with 1 seta, exopodal segment 2 with 2 setae. 2nd internal lobe of Mx1 with 5 setae.
3 - Exopod of P1 indistinctly 3-segmented, with 2 external spines. Lateral plate of Mxp protopodite reduced, sometimes there are visible traces of the plate.

Compl. Ref.:
Razouls & al., 2000 (p.343, tab. 4, Appendix); Yamaguchi & al., 2002 (p.1007, tab.1); Ikeda & al., 2006 (p.1791, Table 2); Park & Ferrari, 2009 (p.143, Table 4, Appendix 1, biogeography)
NZ: 5

Distribution map of Gaetanus paracurvicornis by geographical zones
Antarct. (Indian), off SW Ireland, Kuril-Kamchatka, Japan (NE), Station Knot, Aleutian Trench, Chile.

Type locality: NW Pacific (Kuril Trench)
N: 6
(22) juv.F5: 4,6; juv.M5: 4,1; (37) F: 5,1-4,6; {F: 4,60-5,10}
Rem.: bathy & abyssopelagic.
Sampling depth (Antarct.) : 3000-5000 m.
For Brodsky (1967, p.168) this species resembles G. secundus Esterly in the form of the frontal spine and the length of the thoracic spines; it differs in its much shorter A1.
Last update : 05/01/2015
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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 May 25, 2024]

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