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Calanoida ( Order ) |
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Clausocalanoidea ( Superfamily ) |
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Aetideidae ( Family ) |
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Gaetanus ( Genus ) |
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Gaetanus brachyurus Sars, 1907 (F,M) | |
| | | | | | | Ref.: | | | Sars, 1907 a (p.10, Rem.F); Sars, 1925 (p.62, figs.F); Jespersen, 1934 (p.63); 1940 (p.22); Vervoort, 1952 e (n°46, p.3, fig.F); Grice & Hulsemann, 1967 (p.15, 23: Rem.); 1968 (p.324, 327: Rem.); Park, 1975 a (p.14, figs.F,M); Markhaseva, 1996 (p.183, figs.F,M) |  issued from : E.L. Markhaseva in Proc. Zool. Inst. RAN, St. Petersburg, 1996, 268. [p.184, Fig.142]. Female (specimen from Kuril). Ce: forehead (lateral); Pmd: mandibular palp; GntbMd: gnathobase of Md (partial).
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 issued from : E.L. Markhaseva in Proc. Zool. Inst. RAN, St. Petersburg, 1996, 268. [p.185, Fig.143]. Female (specimen from Kuril Trench).
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 issued from : T. Park in Bull. Mar. Sci., 1975, 25 (1). [p.16, Fig.2]. Male: A, habitus (lateral); B, C, forehead (lateral, dorsal); D, posterior part of metasome (lateral); E, posterior part of metasome and genital segment (dorsal); F, A2; G, distal part of Mx1; H, P1 (anterior); I, P5 (posterior); J, last two exopodal segments of left P5 (medial). P1, P5: legs.
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 issued from : T. Park in Bull. Mar. Sci., 1975, 25 (1). [p.15, Fig.1]. Female: A, B, habitus (dorsal, lateral, respectively); C, D, posterior part of metasome and urosome (dorsal, lateral); E, forehead (lateral); F, A2; G, coxa of Mxp; H, P1 (anterior); I, coxa of P4 (partial, posterior).
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 Issued from: G.O. Sars in Résult. Camp. Scient. Prince Albert I, 69, pls.1-127 (1924). [Pl.XVIII, figs.9-10]. Female: 9, habitus (dorsal); 10, idem (lateral left side).
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 Gaetanus brachyurus female: 1 - Anterior part of cephalon with frontal spine. 2 - Exopodal segments 1 and 2 of A2 with 2 setae each. 2nd internal lobe of Mx1 with 5 setae. 3 - Exopodal segment 1 of P1 clearly 3-segmented; exopod with 3 external spines. Lateral plate of Mxp protopodite well developed. 4 - Spines of last thoracic segment straight, situated in about the middle of the posterior border of last thoracic segment (lateral view). 5 - Frontal spine strongly curved in direction to rostrum (lateral view). Exopodal segments 1 and 2 of A2 with 2 setae each.
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 Gaetanus brachyurus male: 1 - Cephalon with frontal spine. 2 - Exopodal segment 3 of P5 bilobated. It is 1.5-2.2 shorter than exopodal segment 2. 3 - Spines on last thoracic segment long, exceeding the posterior border of genital segment. Exopodal segment 3 of P5 bilobated with incomplete subdivision into lobes. 4 - Endopod of left P5 as long as 1/3 of exopodal segment 1 length. Exopodal segment 3 of left P5 less than half of exopodal segment 2 length.
| | | | | Compl. Ref.: | | | Sewell, 1948 (p.499); Grice & Hulsemann, 1968 (tab.2); Deevey & Brooks, 1977 (p.256, tab.2, Station "S"); Suarez-Morales & Gasca, 1998 a (p108) | | | | NZ: | 6 | | |
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Distribution map of Gaetanus brachyurus by geographical zones
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| | | | | |  Chart of 1996 | |
| | | | Loc: | | | Atlant (N temperate), G. of Mexico, Sargasso Sea, off Bermuda: Station "S" (32°10'N, 64°30'W), S Azores , Faroe Is., S Iceland, S Strait of Davis, W Indian, Kurile-Kamchatka, SE Pacif. (off Juan Fernandez Is.).
Type locality: North Atlantic (off N Canary Islands). | | | | N: | 8 | | | | Lg.: | | | (1) F: 6,4; (37) F: 7,15; (40) F: 5,75-5,58; M: 5,16; (67) F: 5; 6,42; 6,17; {F: 5,00-7,15; M: 5,16} | | | | Rem.: | epi-bathypelagic-?. 1000-1500 m in Sargasso Sea (Deevey & Brooks, 1977, station "S");
After Grice & Hulsemann (1967, p.23) a female differs from the others in having the exopod of P1 consisting of two segments; each segment has 1 external spine; the specimen is also smaller (5.00 mm). | | | 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 November 21, 2024] © copyright 2005-2024 Sorbonne University, CNRS
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