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Calanoida ( Order ) |
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Clausocalanoidea ( Superfamily ) |
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Euchaetidae ( Family ) |
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Paraeuchaeta ( Genus ) |
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Paraeuchaeta eltaninae (Park, 1978) (F,M) | |
| | | | | | | Syn.: | Euchaeta eltaninae Park, 1978 (p.280, figs.F,M); Ward & Wood, 1988 (p.45, tab.1) | | | | Ref.: | | | Bradford & al., 1983 (p.36, figs.F,M, Rem.); Park, 1994 (p.321); 1995 (p.39, Rem.F,M, figs) |  issued from : T. Park in Bull. Scripps Inst. Oceanogr. Univ. California, San Diego, 1995, 29. [p.135, Fig.25]. Female: a, forehead (left side); b, urosome (left); c, genital somite (left); d, outer lobe of Mx1; e exopod of P1 (anterior); f, exopod of P2 (anterior). Nota: Similar in habitus to P. parvula but distinguishable from it by rostrum, whivh in lateral view is almost triangular with a large base. Laterally, genital somite with strongly bulging dorsal margin; ventral margin of genital flange nearly straight or only slightly emarginate and sloping posteroventrad. Posterior edge of genital field produced into a lox angular ridge with a wide base. Posterior margin of genital prominence slightly bulging and sloping about 30° with respect to long body axis. Cephalosomal appendages similat to those of P. barbata and P. parvula except that outer lobe of Mx1 with 7 long setae, of which the proximalmost is shorter than the others, and a minute seta proximally. Male: g, forehead (left); h, distal exopodal segments of left 5th leg (lateral, tilted clockwise).
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 issued from : T. Park in Antarctic Res. Ser. Oceanogr. Washington, 1978, 27.[p.281, Fig.118]. As Euchaeta eltaninae. Female: A, forehead (lateral); B, C, D, distal end of metasome segment (right side, left side, and ventral, respectively); E, posterior part of metasome and urosome (right side, lateral); F, outer lobe of Mx1; G, P1; H, P2. P1-2: legs (anterior). Nota: Proportional lengths of prosome and urosome about 68: 32. Rostrum large, pointing obliquely fordward at angle of about 60° with respect to body. Frontal eminence of forehead low, bearing suprafrontal sensilla. A1 reaching distal end of metasome. Nota from Bradford & al. (1983, p.37): P1 exopod female: Aa minute: Bb = BC; Cc > BC. P2 exopod female : Aa > AB; Bb = 1/3 BC; Cc = 2/3 CD; Dd = 1/3 CD. (see code of lengths outer spines in the Genus' figure, or in Paraeuchaeta sp. A).
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 issued from : T. Park in Antarctic Res. Ser. Oceanogr. Washington, 1978, 27.[p.282, Fig.119]. As Euchaeta eltaninae. Male: A, forehead (lateral); B, C, last metasomal and genital segments (left side and right side, respectively); D, P1; E, P2; F, P5; G, H, I, distal part of exopod of left P5 (medial, anterior, and lateral, respectively). P1-5: legs (anterior). Nota from Bradford & al; (1983, p.38): P1 exopod male: Aa minute; Bb = 2/5 BC; Cc = 4/5 BC. P2 exopod male: Aa = 1/6 AB; Bb = 1/3 BC; Cc = 1/4 CD; Dd = 1/4 CD. (see code of lengths outer spines in the Genus' figure, or in Paraeuchaeta sp. A).
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 Paraeuchaeta eltaninae Female: 1 - See key to species Groups and independent species of Paraeuchaeta (p.30): malayensis species Group. 2 - Outer spine of 2nd exopodal segment (or the 2nd of the first 2 exopodal segments forming a proximal, compound segment) of P1 normally developed (Fig.25-e). 3 - Outer lobe of Mx1 with 7 long setae in addition to 1 or 2 minute setae proximally (Fig.25-d). 4 - Genital somite without a conical process on left side close to anterior base of genital prominence (Fig.25-c). 5 - Dorsally and ventrally, genital somite symmetrical. 6 - Laterally, genital flange with normal posterior lobe (Fig.25-c). 7 - Laterally, genital somite with more or less smooth dorsal margin (Fig.25-c). 8 - Laterally, genital prominence with nearly straight or only slightly bulging posterior margin (Fig.25-c). 9 - Outer lobe of Mx1 with 7 long setae plus 1 or 2 very minute setae (Fig.25-d). 10 - Laterally, genital prominence with posterior margin equal to or longer than posterior ventral wall of somite (Fig.25-c). 11 - Laterally, posterior margin of genital prominence and posterior ventral wall of somite forming an angle of more than 140° (Fig.25-c). 12 - Laterally, genital genital prominence with posterior margin distinctly longer than posterior ventral wall of somite (Fig.25-c).
| | | | | Compl. Ref.: | | | Razouls & al., 2000 (p.343, tab. 3, Appendix); Park & Ferrari, 2009 (p.143, Table 3, 8, figs.1, 2, Appendix 1, biogeography) | | | | NZ: | 3 | | |
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Distribution map of Paraeuchaeta eltaninae by geographical zones
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| | | | | |  issued from : T. Park in Biology of the Antarctic Seas VII. Antarctic Res. Ser., 1978, 27 (4). [p.283, Fig.120].
Occurrence of Euchaeta ( = Paraeuchaeta ) eltaninae.
Closed circles: stations where the species was found; A.C: Antarctic Convergence. |
 Issued from : E.T. Park & F.D. Ferrari in A selection from Smithsonian at the Poles Contributions to International Polar year. I. Krupnik, M.A. Lang and S.E. Miller, eds., Publs. by Smithsonian Institution Scholarly Press, Washington DC., 2009. [p.167, Fig.2].
Distribution of selected pelagic calanoids Paraeuchaeta eltaninae of the Southern Ocean and the closest relative in the subarctic region of the Arctic Ocean. |
| | | | Loc: | | | Antarct. (SW & SE Atlant., SW & SE Pacif.), sub-Antarct., Tasman Sea
Locality type: Between 65°58'E, 174°54'E and 65°56'S, 174°34'E. | | | | N: | 5 | | | | Lg.: | | | (3) F: 7,8-7,3; M: 7,1-6,6; (20) F: 7,83-7,25; M: 7,08-6,58; {F: 7,25-7,83; M: 6,58-7,10} | | | | Rem.: | Meso-bathypelagic.
Sampling depth (Antarct. sub-Antarct.) : 0-1000 m.
This species is an antractic deep water species found widely south of the Antarctic Convergence, and found as far north as 47°S in the Tasman Sea | | | Last update : 27/02/2015 | |
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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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