Fiche d'espèce de Copépode
Calanoida ( Ordre )
    Arietelloidea ( Superfamille )
        Augaptilidae ( Famille )
            Euaugaptilus ( Genre )
Euaugaptilus squamatus  (Giesbrecht, 1889)   (F,M)
Syn.: Augaptilus squamatus Giesbrecht,1889; 1892 (p.400, 413, 770, figs.F); Giesbrecht & Schmeil, 1898 (p.121, Rem. F); Wolfenden, 1911 (p.341); Lysholm & Nordgaard, 1921 (p.26);
Augaptilus brevicaudatus Sars, 1905 c (p.12); Farran, 1908 b (p.73, Rem.);
Augaptilus californicus Esterly, 1913 (p.186, figs.F); Brodsky, 1950 (1967) (p.371, figs.F, Rem.M); Suarez-Morales & Gasca, 1998 a (p108); Hernandez-Trujillo & Esqueda-Escarcega, 2002 (in Appendix);
E. californicus : Sewell, 1948 (p.558, 563); Owre & Foyo, 1964 a (p.343); 1967 b (p.86); E. laticeps (part.): Owre & Foyo, 1967 (p.86)
Ref.:
Sars, 1925 (p.261, figs.F); Rose, 1933 a (p.222, figs.F); Jespersen, 1940 (p.58); Lysholm & al., 1945 (part., p.38, 48); Sewell, 1947 (p.197, 199, 200); C.B. Wilson, 1950 (p.207); Vervoort, 1965 (p.136, Rem.); Matthews, 1972 (p.21, Descr.M, figs.M, Rem.: p. 41); Tanaka & Omori,1974 (p.253, figs.F); Bradford-Grieve & al., 1999 (p.882, 939, figs.F,M); Vives & Shmeleva, 2007 (p.211, figs.F,M, Rem.)
Espèce Euaugaptilus squamatus - Planche 1 de figures morphologiquesissued from : O. Tanaka & M. Omori in Publs Seto Mar. Biol. Lab., 1974, XXI (3/4). [p.254, Fig.28].
Female: a, forehead (lateral); b, last thoracic segment and urosome (lateral left side); c, idem (dorsal); d, exopod of A2; e, Mx1; f, Mx2.
Nota: The urosome segments and furca are in the proportional lengths as 46:12:22:20 = 100. Prosome and urosome are in the proportional lengths as 80:20. A1 extends beyond the furca by 6 segments. The species can be characterized by the short 3rd urosomal somite.


Espèce Euaugaptilus squamatus - Planche 2 de figures morphologiquesissued from : O. Tanaka & M. Omori in Publs Seto Mar. Biol. Lab., 1974, XXI (3/4). [p.199, Fig.2,d].
Female: d, mandibular teeth.


Espèce Euaugaptilus squamatus - Planche 3 de figures morphologiquesIssued from : G.O. Sars in Résult. Camp. Scient. Prince Albert I, 69, pls.1-127 (1924). [Pl.LXXVIII, figs.1-13].
Female: 1, habitus (dorsal); 2, idem (lateral left side); 3, rostrum; 4, A1; 5, A2; 6, Md; 7, Mx1; 8, Mx2; 9, Mxp; 10, P1; 11, P2; 12, P5; 13, urosome (dorsal).


Espèce Euaugaptilus squamatus - Planche 4 de figures morphologiquesIssued from : W. Giesbrecht in Systematik und Faunistik der Pelagischen Copepoden des Golfes von Neapel und der angrenzenden Meeres-Abschnitte. – Fauna Flora Golf. Neapel, 1892. Atlas von 54 Tafeln. [Taf.28, Figs.1, 12, 18]. As Augaptilus squamatus.
Female: 1, A1 (distal portion); 12, A2 (anterior view); 18, Md (mandibular blade).


Espèce Euaugaptilus squamatus - Planche 5 de figures morphologiquesIssued from : W. Giesbrecht in Systematik und Faunistik der Pelagischen Copepoden des Golfes von Neapel und der angrenzenden Meeres-Abschnitte. – Fauna Flora Golf. Neapel, 1892. Atlas von 54 Tafeln. [Taf.28, Fig.34]. As Augaptilus squamatus.
Female: Mxp.:


Espèce Euaugaptilus squamatus - Planche 6 de figures morphologiquesIssued from : W. Giesbrecht in Systematik und Faunistik der Pelagischen Copepoden des Golfes von Neapel und der angrenzenden Meeres-Abschnitte. – Fauna Flora Golf. Neapel, 1892, 19 , Atlas von 54 Tafeln. [Taf.28, Fig.22]. As Augaptilus squamatus.
Female: Mx1 (anterior view).
Li = inner lobe; B2 = Basis; Ri = endopod; Re = exopod.


Espèce Euaugaptilus squamatus - Planche 7 de figures morphologiquesIssued from : W. Giesbrecht in Systematik und Faunistik der Pelagischen Copepoden des Golfes von Neapel und der angrenzenden Meeres-Abschnitte. – Fauna Flora Golf. Neapel, 1892, 19 , Atlas von 54 Tafeln. [Taf.28, Fig.25]. As Augaptilus squamatus.
Female: Mx1 (posterior view).
Le = outer lobe.


Espèce Euaugaptilus squamatus - Planche 8 de figures morphologiquesissued from : J.M. Bradford-Grieve, E.L. Markhaseva & C.E.F. Rocha & B. Abiahy in South Atlantic Zooplankton, Edit. D. Boltovskoy. 1999. Vol.2. Copepoda. [p.1041, Fig. 7.263]. Female: Mx1. Li = inner lobe; Le = outer lobe.

Nota: Exopod of Mx1 with 7 setae.


Espèce Euaugaptilus squamatus - Planche 9 de figures morphologiquesissued from : J.B.L. Matthews in Bull. Br. Mus. (Nat. Hist.) Zool., 1972, 24 (1). [p.20, Fig.9, D-H].
Male (from 28°07'N, 14°07'W): D, habitus (dorsal); E, part of right A1 showing geniculate joint; F, Md (biting edge of mandibular gnathobase); G, exopodite of P1; H, P5 (anterior view).
D: scale II; E-H: scale III.

Nota: The last 4 segments of A1 extend past the end of urosome. The geniculate joint on the right-hand is not pronounced and the only associated modification is a spiny projection towards the distal ebnd of the segment before.
A2 lacks setae on the basipodite, but otherwise is the same like in female.
The mandibular palp is identical to that of the female and the gnathobase agrees with the figure given by Giesbrecht (1892), except that the middle and distal teeth are sharper; Sars (1925) figured an extra, fine tooyh in the proximal group.Mx1 with 11 spines on the 1st endite, while Giesbrecht (1892) figured 10 and 1 small seta and Sars (1925) showed only 9.
Mxp has one more small seta on the terminal segment than Sars (1925) has depicted.
P1-P4 are the same as Sars (1925) for female.
In the dissected specimen the right P5 lacks a spine on the 1st exopodite segment (almost certainly due to loss). The spiny projection on the end of this ramus is about twice as long as the terminal spine and the projection on the inner margin of the 2nd segment is small, with a feeble tip and with some associated setules just distal to it. The lef-hand limb is quite usual for the genus.

For Matthews, the specimens agree so closely with the female of E. squamatus

Espèce Euaugaptilus squamatus - Planche 10 de figures morphologiquesIssued from : C.O. Esterly in Univ. Calif. Publs Zool., 1913, 11 (10). [Pl. 10, Figs. 4, 22]. As Augaptilus californicus.
Female (from S California): 4, abdomen (lateral); 22, forhead (lateral).

Nota: Last thoracic segment rounded laterally.
Cephalothorax four and one-half times as long as abdomen.
Genital segment protrudes on the ventral surface and the aperture surrounded by hairs; the segment is as long as the other two together and more than 3 times as long as the 2nd segment.
A1 24-segmented, 7.3 mm long
The inner ramus of A2 is less than twice the length the outer.
Cephalothorax length: 5 mm.
Body very transparent, the 20th segment of A1 with a brown band around.


Espèce Euaugaptilus squamatus - Planche 11 de figures morphologiquesIssued from : C.O. Esterly in Univ. Calif. Publs Zool., 1913, 11 (10). [Pl. 11, Figs. 31, 40]. As Augaptilus californicus.
Female: 31, Md (mandibular blade); 40, A2.

Nota: The blade of Md is elongated.


Espèce Euaugaptilus squamatus - Planche 12 de figures morphologiquesIssued from : C.O. Esterly in Univ. Calif. Publs Zool., 1913, 11 (10). [Pl. 12, Figs. 43, 48]. As Augaptilus californicus.
Female (from S California): 43, exopod of P1; 48, P5.
Exopod length of P1: 571 µm. P5 length: 1.114 mm.


Espèce Euaugaptilus squamatus - Planche 13 de figures morphologiquesIssued from : W. Giesbrecht in Systematik und Faunistik der Pelagischen Copepoden des Golfes von Neapel und der angrenzenden Meeres-Abschnitte. – Fauna Flora Golf. Neapel, 1892. Atlas von 54 Tafeln. [Taf.39, Fig.38]. As Augaptilus squamatus.
Female: 38, urosome (ventral).

Ref. compl.:
Sewell,1948 (p.505, 547, 550, 559, 560); ? C.B. Wilson, 1950 (p.207); Grice & Hulsemann, 1965 (p.224); Roe, 1972 (p.277, tabl.1, tabl.2); 1972 c (p.1035: Rem.); ? Harding, 1974 (p.141, Table 3, gut contents); Vives & al., 1975 (p.50, tab.II, XII); Deevey & Brooks, 1977 (p.156, tab.2, Station "S"); Vives, 1982 (p.294); Lozano Soldevilla & al., 1988 (p.60); Heinrich, 1990 (p.18); Holmes, 2001 (p.12); in CalCOFI regional list (MDO, Nov. 2013; M. Ohman, comm. pers.)
NZ: 11

Carte de distribution de Euaugaptilus squamatus par zones géographiques
Loc:
off Tristan da Cunha Is., off N Trindade Is., G. of Guinea, off NE St. Paul Is., off Mauritania, Canary Is., Azores, off Portugal, Ibero-moroccan Bay, off W Ireland, S Iceland, Caribbean Sea, Florida, off Bermuda (Station "S"), ? off E Cape Cod, Sargasso Sea, Philippines, Japan (Izu region), California, Pacif. (tropical), Marshall Is., E Tuamotu Is., SW Galapagos, off Peru, Pacif. (SE tropical), E Easter Is.
N: 15
Lg.:
(1) F: 6,3; (22) F: 5,8; M: 4,5; (16) F: 5,8-5,4; (46) F: 6,8; (68) F: 7,2; 7,41; (144) F: 5,8; (199) F: 6,72-6,23: M: 6,4-5,93; {F: 5,40-7,41; M: 4,50-6,40}
Rem.: méso-bathypélagique.
Peut avoir été confondu avec Euaugaptilus magnus.
Voir aussi les remarques en anglais
Dernière mise à jour : 03/02/2016

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Razouls C., Desreumaux N., Kouwenberg J. et de Bovée F., 2005-2020. - Biodiversité des Copépodes planctoniques marins (morphologie, répartition géographique et données biologiques). Sorbonne Université, CNRS. Disponible sur http://copepodes.obs-banyuls.fr [Accédé le 01 décembre 2020]

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