Fiche d'espèce de Copépode
Calanoida ( Ordre )
    Diaptomoidea ( Superfamille )
        Temoridae ( Famille )
            Eurytemora ( Genre )
Eurytemora pacifica  Sato, 1913   (F,M)
Syn.: E. johanseni Willey, 1920 (p.13, figs.F,M); Légaré, 1957 (p.537)
Ref.:
Smirnov, 1931 (p.199, fig.M); Brodsky, 1950 (1967) (p.281, figs.F,M); Chiba, 1956 (p.25, figs.F,M, juv., N); M.W. Johnson, 1961 (p.317, figs.F, Rem.); Heron, 1964 (p.209, Rem.); Chen & Zhang, 1965 (p.66, figs.F,M); Shih & al., 1971 (p.153, 208); Kos, 1976 (Vol. II, figs.F,M); Heron & Damkaer, 1976 (p.128, 128, 129, Table 1: synonymy, 2: ratio anal segment/uropods); Kos, 1977 a (p.27, Rem.F,M, figs.F,M); Gardner & Szabo, 1982 (p.318, figs.F,M); Dussart & Defaye, 1983 (p.49); Kos, 1984 (1985) (p.228, Rem.); Zheng Zhong & al., 1984 (1989) (p.242, figs.F,M); Chihara & Murano, 1997 (p.917, Pl.181: F,M); Dodson & al., 2010 (p.653, table 2, fig.4, 5, 6, key Female: p.146); Brylinski & al., 2016 (in press)
Espèce Eurytemora pacifica - Planche 1 de figures morphologiquesissued from: Q.-c Chen & S.-z. Zhang in Studia Marina Sinica, 1965, 7. [Pl.21, 5-9].
Female (from E China Sea): 5, habitus (dorsal); 6, left P5 (posterior); 7, right P5 (posterior).

Male: 8, habitus (dorsal); 9, P5 (posterior).


Espèce Eurytemora pacifica - Planche 2 de figures morphologiquesIssued 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.282, Fig.190].
Female (from NW Pacif.): habtus with egg sec (dorsal); posterior thoracic segment and urosome; S5, P5.

Male: habitus (dorsal); S5, P5.


Espèce Eurytemora pacifica - Planche 3 de figures morphologiquesissued from : G.A. Heron in Crustaceana, 1964, 7 (3). [p.203, Fig.9].
Male (from Kivalina Lagoon, Marryatt Inlet, NW Alaska): 9, right A1 (segments 8-13 with detail of spines).


Espèce Eurytemora pacifica - Planche 4 de figures morphologiquesissued from : M.W. Johnson in pacif. Sci., 1961, 15 (3). [p.318, Figs.7-8].
Female (from Alaska coast): 7, habitus with eggs and spermatophore (lateral); 8, lateral outline of 5th thoracic segment occuring in some adults.


Espèce Eurytemora pacifica - Planche 5 de figures morphologiquesissued from : M.W. Johnson in pacif. Sci., 1961, 15 (3). [p.320, Figs.9-10].
Female: 9, P5.

Male: 10, P5.


Espèce Eurytemora pacifica - Planche 6 de figures morphologiquesIssued from : A. Willey in Rep. Can. Arct. Exp. 1913-18, 1920, VII, Part K. [p.13K, Fig.5]. As Eurytemora johanseni.
Female (from 68°30'N, 166°32'W): Dorsal view of hind-body.


Espèce Eurytemora pacifica - Planche 7 de figures morphologiquesIssued from : A. Willey in Rep. Can. Arct. Exp. 1913-18, 1920, VII, Part K. [p.13K, Fig.6]. As Eurytemora johanseni.
Female: P5.


Espèce Eurytemora pacifica - Planche 8 de figures morphologiquesIssued from : A. Willey in Rep. Can. Arct. Exp. 1913-18, 1920, VII, Part K. [p.14K, Figs.7, 9]. As Eurytemora johanseni.
Male: 7, distal segments of right A1; 9, spine on the 12th segment.


Espèce Eurytemora pacifica - Planche 9 de figures morphologiquesIssued from : A. Willey in Rep. Can. Arct. Exp. 1913-18, 1920, VII, Part K. [p.14K, Figs.11, 12]. As Eurytemora johanseni.
Male: 11, basis of left P5; 12, P5 (posterior view)


Espèce Eurytemora pacifica - Planche 10 de figures morphologiquesIssued from : A. Willey in Rep. Can. Arct. Exp. 1913-18, 1920, VII, Part K. [p.15K, Fig.13]. As Eurytemora johanseni.
Male: 13, abnormal caudal rami.


Espèce Eurytemora pacifica - Planche 11 de figures morphologiquesIssued from : M. Chihara & M. Murano in An Illustrated Guide to Marine Plankton in Japan, 1997. [p.919, Pl. 181, fig.285 a-b].
Female : a, habitus (dorsal); b, P5; c, P1.
Note characteristics numbered 1, 2, 3 into circles.


Espèce Eurytemora pacifica - Planche 12 de figures morphologiquesIssued from : M. Chihara & M. Murano in An Illustrated Guide to Marine Plankton in Japan, 1997. [p.919, Pl. 181, fig.285 a-b].
Male : a, habitus (dorsal); b, P5.
Note characteristics numbered 1, 2, 3 into circles.


Espèce Eurytemora pacifica - Planche 13 de figures morphologiquesIssued from : J.-M. Brylinski, L. Courcot, V. David & B. Sautour inBioinv. Rec., 2016, 5. [Fig.2].
Eurytemora pacifica (from Marennes-Oléron Bay, France) (morphological specifications, SEM): A, winged female (ventral view); B, wingless female; E, P5 (posterior view); F, posterior end of thorax and urosome with egg sac of winged female; G, same of winless female.
w = ''wing''; e = egg; es = egg-sac; sp = spermatophore; go = gonopore, th5 = last thoracic somite.

Nota: Rostrum bifurcate with 2 filaments.
- Metasome segments not fused; - Back corners of the last metasome segment with wing-like growth (''winged''), which reach almost to the end of the genital segment. Some female specimens without ''wings'' (wingless).
- Urosome 3-segmented
- Genital double-somite widen in the sides, as long as either of the 2 next segments. Genital antrum armed with 3 thorns and a gutter for spermatophore placement, covered by a central mobile triangular operculum.
- Caudal rami not longer than the 3rd abdominal segment, slightly shorter left.
- P5 asymmetrical, uniramous, 3-segmented; segment 2 with 2 lateral spines anfd inner stout serrated process directed distally, parallel to leg axis, this process as long as segment 3 and forming pliers with this one. Distal segment armed with 1 subterminal and 1 apical spine; inner side with numerous setules. Asymmetry is evident in the length of the distal segment and the inner process of the segment 2. In the right leg, the process is shorter with 5-6 teeth, the distal segment is shorter, and the terminal spine almost as long as the last two segments. In the left leg, the process is longer with 7-8 teeth, the terminal segment is bigger and the terminal spine is shorter than the terminal segment.


Espèce Eurytemora pacifica - Planche 14 de figures morphologiquesIssued from : J.-M. Brylinski, L. Courcot, V. David & B. Sautour in Bioinv. Rec., 2016, 5. [Fig.2].
Eurytemora pacifica (morphological specifications, SEM): H, Male (ventral view); I, male P5 (anterior face); J, extremity of left P5 (anterior view).
bp = bludgeon process.

Nota: Back corners of the last metasome segment without wing-like processes.
- Right A1 geniculate; 1 spine on the segments 8, 9 and 12.
- Urosome 5-segmented.
Caudal rami equal in length to the last two segments combined.
- P5 asymmetrical, uniramous, 4-segmented. Distal segment elongated and curved on the right leg. Segment 2 of the left leg with inner enlargement. Distal segment usually presented as triangular with a hook. SEM observation showed a concave triangular pallet stoched with bundles of fine setae and with a thorny bludgeon process.


Espèce Eurytemora pacifica - Planche 15 de figures morphologiquesIssued from : M.S. Kos in Zoological Institut RAS, St. Petersburg, 2016, 179, [p.86, Fig. 44]. Eurytemora pacifica female (from the Japan Sea).


Espèce Eurytemora pacifica - Planche 16 de figures morphologiquesIssued from : M.S. Kos in Zoological Institut RAS, St. Petersburg, 2016, 179, [p.87, Fig. 45]. Eurytemora pacifica female (from the Japan Sea).
Gs = genital segment (ventral view).


Espèce Eurytemora pacifica - Planche 17 de figures morphologiquesIssued from : M.S. Kos in Zoological Institut RAS, St. Petersburg, 2016, 179, [p.87, Fig. 45]. Eurytemora pacifica Male (from the Japan Sea).


Espèce Eurytemora pacifica - Planche 18 de figures morphologiquesIssued from : S.I. Dodson, D.A. Skelly & C.E. Lee in Hydrobiologia, 2010, 653. [p.141, Table 2]. Descriptions of North American species of Eurytemora from Alaska.

Ref. compl.:
Kos, 1985 (p.228); Yoo, 1991 (tab.1); Myung & al., 1994 (tab.1); Shih & Young, 1995 (p.74); Madhupratap & al., 1996 (p.77, Table 2: resting eggs); Mauchline, 1998 (tab.40); Pinchuk & Paul, 2000 (p.4, table 1, % occurrence); Uye & al., 2000 (p.193, fig.7 : abundance vs t°, Sal.); Ueda & al., 2000 (tab.1); Ohtsuka & al., 2008 (p.115, Table 5); Hopcroft & al., 2009 (p.9, Table 3); Hopcroft & al., 2010 (p.27, Table 2, fig.9); DiBacco & al., 2012 (p.483, Table S1, ballast water transport); Lee D.B. & al., 2012 (p.88, co-occurrence); Moon & al., 2012 (p.1, Table 1, 2, figs.10, 11, seasonal & spatial variations); Questel & al., 2013 (p.23, Table 3, interannual abundance & biomass, 2008-2010); Eisner & al., 2013 (p.87, Table 3: abundance vs water structure); Coyle & al., 2014 (p.97, table 10); Ohtsuka & Nishida, 2017 (p.565, 578, Table 22.1).
Loc:
China Seas (Yellow Sea), W & S Korea, Muan Bay Asan Bay, Japan (Akkeshi Bay, Kochi, Honshu: Onagawa Bay, Lake Nakaumi), Japan Sea, S Kuril Is., N Okhotsk Sea, E Siberia, Chukchi Sea, E Sakhalin (neritic), Bering Sea, Karagin Bay, Alaska, Strait of Georgia, Arct, Arcachon Bay, Marennes-Oléron Bay, Concarneau (in the Marinarium)
N: 32
Lg.:
(22) F: 1,28-1,12; M: 1,12-1,03; (190) F: 1,28; M: 1,12; (290) F: 1,1-1,26; M: 0,92-1,08; (568) F: 0,99-1,46; M: 0,99-1,16; (571) F: 1,19-0,99; 1,29-1,05; M: 1,16-0,99; (1201) F: 1,07-1,27; M: 0,9-0,97; (1220) F: 0,99-1,85; M: 0,92-2,0; (1232) F: 0,99-1,33; M: 0,99-1,16; (1 {F: 0,99-1,85; M: 0,90-2,0}
Rem.: saumâtre, marine (littorale)
Voir aussi les remarques en anglais
Dernière mise à jour : 06/06/2020

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Razouls C., Desreumaux N., Kouwenberg J. et de Bovée F., 2005-2021. - Biodiversité des Copépodes planctoniques marins (morphologie, répartition géographique et données biologiques). Sorbonne Université, CNRS. Disponible sur http://copepodes.obs-banyuls.fr [Accédé le 02 décembre 2021]

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