Fiche d'espèce de Copépode
Calanoida ( Ordre )
    Clausocalanoidea ( Superfamille )
        Euchaetidae ( Famille )
            Paraeuchaeta ( Genre )
Paraeuchaeta californica  (Esterly, 1906)   (F,M)
Syn.: Euchaeta californica Esterly, 1906 a (p.60, Descr.F, figs.F); Davis, 1949 (p.37, figs.F); Vervoort, 1957 (p.77); Fleminger, 1967 a (tabl.1); Grice & Hulsemann, 1967 (p.15); Park, 1977 (p.135, Redescr., figs.F,M); Gardner & Szabo, 1982 (p.260, figs.F,M, Rem.); Park, W & al., 2004 (p.464, tab.1);
Euchaeta dubia Esterly, 1906 a (p.63, Descr.M, figs.M); Grice & Hulsemann, 1968 (tab.2);
Pareuchaeta dubia : Brodsky, 1950 (p.222, figs.M);
no Paraeuchaeta californica : A. Scott, 1909 (p.71, figs.F); Sewell, 1929 (p.158);
no Pareuchaeta californica : Tanaka & Omori, 1968 (p.231);
Pareuchaeta californica : Brodsky, 1950 (1967) (p.211, figs.F); C.B. Wilson, 1950 (p.277, figs.F,M); Guangshan & Honglin, 1984 (p.118, tab., Rem.: p.165);
Paraeuchaeta dubia: De Decker & Mombeck, 1964 (p.13)
Ref.:
Sewell, 1948 (p.556, 563); Bradford & al., 1983 (p.20, Rem.); Park, 1994 (p.320, 325); 1995 (p.54, Rem.F,M, figs.F,M)
Espèce Paraeuchaeta californica - Planche 1 de figures morphologiquesissued from : T. Park in Bull. Scripps Inst. Oceanogr. Univ. California, San Diego, 1995, 29. [p.157, Fig.47].
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. calva but distinguishable from it.
Laterally, rostrum relatively large, pointing almost parallel to anterior dorsal margin of forehead; its anterior margin straight, beginning a short distance from suprafrontal sensilla.
Urosome relatively short.
Distal part of genital somite as measured from posterior end of genital flange about 1.9 times length of genital flange.

Male: g, forehead (left); h, distal exopodal segments of left 5th leg (lateral, tilted clockwise).


Espèce Paraeuchaeta californica - Planche 2 de figures morphologiquesissued from : T. Park in Crustaceana, 1977, 32 (2). [p.137, Fig.1]. From off San Diego
Female (32°51.5'N, 117°45'W): a, forehead (lateral; fe = frontal eminence); b, genital segment (lateral right side; gf = genital flange, pe posterior edge of genital field); c, genital segment (dorsal); d, genital field (ventral; gf = genital flange); e, outer lobe of Mx1; ; f, P1 (anterior view); g, exopod of P2 (anterior).
Nota: A1 reaching about to middle of genital segment. Outer coxal lobe of Mx1 with 7 large and 2 medium-siezd setae. None of 6 apical detae of Mx2 armed with long, widely separated spines in addition to fine spinules.

Male (27°34.5'N, 115°39'W): h, forehead (lateral); i, distal part of exopod of P2; j, distal part of exopod of left P5 (lateral; dp = digitiform process); k, idem (anterior); l, idem (medial).


Espèce Paraeuchaeta californica - Planche 3 de figures morphologiquesissued from : C.O. Esterly in Univ. Calif. Publs Zool., 3 (5). [Pl.IX, Fig.11]. As Euchaeta californica
Female (from San Diego, California): 11, forehead (lateral).


Espèce Paraeuchaeta californica - Planche 4 de figures morphologiquesissued from : C.O. Esterly in Univ. Calif. Publs Zool., 3 (5). [Pl.X, Figs.26, 34]. As Euchaeta californica
Female: 26, genital segment (ventral); 34, genital segment and last thoracic segment (lateral).


Espèce Paraeuchaeta californica - Planche 5 de figures morphologiquesissued from : C.O. Esterly in Univ. Calif. Publs Zool., 1906, 3 (5). [Pl.9, Fig.7]. As Euchaeta dubia.
Male (from San Diego, California): 7, forehead (lateral).


Espèce Paraeuchaeta californica - Planche 6 de figures morphologiquesissued from : C.O. Esterly in Univ. Calif. Publs Zool., 1906, 3 (5). [Pl.11, Fig.36]. As Euchaeta dubia.
Male: 36, last thoracic segment and genital segment (lateral, right side).


Espèce Paraeuchaeta californica - Planche 7 de figures morphologiquesissued from : C.O. Esterly in Univ. Calif. Publs Zool., 1906, 3 (5). [Pl.13, Fig.66]. As Euchaeta dubia.
Male: 66, distal portion of 2nd and 3rd segments of exopod of P2.


Espèce Paraeuchaeta californica - Planche 8 de figures morphologiquesissued from : C.O. Esterly in Univ. Calif. Publs Zool., 1906, 3 (5). [Pl.14, Figs.84, 85]. As Euchaeta dubia.
Male: 84, P5; 85, distal portion of 2nd segment of exopod of left P5.


Espèce Paraeuchaeta californica - Planche 9 de figures morphologiquesParaeuchaeta californica 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.47-e).
3 - Outer lobe of Mx1 with 7 large distal setae extending laterad and 2 medium-sized, densely plumose proximal setae extending proximad along lateral side of appendage (Fig.47-d).
4 - Genital segment without conspicuous conical processes on left side at anterior base of genital prominence.
5 - Laterally, rostrum spiniform (Fig.47-a).
6 - Laterally, posterior ventral wall of genital somite very long (Fig.47-c).
7 - Laterally, rostrum large with straight anterior margin (Fig.47-a).

Ref. compl.:
Brinton & al., 1986 (p.228, Table 1); Suarez-Morales & Gasca, 1998 a (p.109); Galbraith, 2009 (pers. comm.); Park & Ferrari, 2009 (p.143, Table 8, biogeography); in CalCOFI regional list (MDO, Nov. 2013; M. Ohman, comm. pers.)
NZ: 4 + 3 douteuses

Carte de distribution de Paraeuchaeta californica par zones géographiques
Espèce Paraeuchaeta californica - Carte de distribution 2
Carte de 1996
Loc:
Gulf of Alaska (Icery Strait), off Cape Flattery, off Oregon, California, Gulf of California, Central America, Pacif. equatorial (E & SE), [? South Africa (E) (in De Decker & Mombeck, 1964); ? Bay of Bengal (in Sewell, 1913, p.354), off Sri Lanka (in Sewell, 1929, p.158), SW Indian (in Grice & Hulsemann, 1967); Pacif. (W equatorial) (in Guangshan & Honglin, 1984); off Juan Fernandez Is., off S Chile (in Yamanaka, 1976, p.170)]
N: 9
Lg.:
(3) F: 8,2-7,6; M: 7,6-6,8; (17) F: 8; M: 7,8; (22) F: 8-7; M: 7,8; (396) F: 8,08-7,91; M: ± 7,5; {F: 7,00-8,20; M: 6,80-7,80}

The mean female size is 7.827 mm (n = 7; SD = 0.4093), and the mean male size is 7.500 mm (n = 5; SD = 0.4123). The size ratio (male : female) is 0.966 (n = 4; SD = 0.0559), or ± 96 %.
Rem.: Les localisations hors Pacifique sont à confirmer, de même qu'au sud du Chili et dans la Mer de Chine méridionale.
Voir aussi les remarques en anglais
Dernière mise à jour : 26/08/2019

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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 24 septembre 2021]

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