Fiche d'espèce de Copépode
Calanoida ( Ordre )
    Arietelloidea ( Superfamille )
        Heterorhabdidae ( Famille )
            Heterorhabdus ( Genre )
Heterorhabdus fistulosus  Tanaka, 1964   (F,M)
Ref.:
Tanaka, 1964 a (p.7, figs.F,M); Heptner, 1971 (p.149, figs.F,M, Rem.: 2 forms, tuberculata and typica); Park, 2000 (p.111, figs.F,M, Rem.); Chihara & Murano, 1997 (p.818, Pl.119,120: F,M)
Espèce Heterorhabdus fistulosus - Planche 1 de figures morphologiquesissued from : T. Park in Bull. Scripps Inst. Oceanogr. Univ. California, San Diego, 2000, 31. [p.232, Fig.80].
Female: a, habitus (left side); b, c, urosome (left, dorsal , respectively); d, genital somite (left), e, genital somite with operculum open (left); f, genital somite (ventral); g, h, i, genital somite with a tubercular outgrowth (dorsal, left, right, respectively); j, left Mx2 (posterior).

Nota: Prosome length 70 % length of body and about 2.2 times length of urosome.
Forehead (laterally) with rounded anterior end and produced ventrad into a conical rostrum bearing 2 selender filaments.
A1 extending beyond posterior end of caudal ramus by its last 1 or 2 segments.
Mx2: 2nd seta of 1st lobe approximately 1/3 length of 1st seta. Posterior subterminal spine of 4th lobe 68% as long as2nd saberlike spine, which is only slightly longer than 1st. Saberlike spine of 5th lobe 83% as long as falcate spine.
Genital somite with a tubercular outgrowth on dorsolateral side and close to posterior end. Genital field with 7-16 pores on left side and about 25 pores on right side.
Length ratios of 4 urosomal somites and left caudal ramus 36.4 : 18.8 : 13.9 : 9.1 : 21.8 = 100.


Espèce Heterorhabdus fistulosus - Planche 2 de figures morphologiquesissued from : T. Park in Bull. Scripps Inst. Oceanogr. Univ. California, San Diego, 2000, 31. [p.233, Fig.81].
Female: a, right Mxp (anterior); b, distal part of basis of right Mxp (anterior); c, idem, from different specimen (anterior); d, exopod of P1 (anterior); e, exopod of P5 (posterior).

Male: f, P5 (anterior); g, h, second exopodal segment of right P5 (anterior, posterior, respectively); i, exopod of left P5 (anterior).


Espèce Heterorhabdus fistulosus - Planche 3 de figures morphologiquesissued from : O. Tanaka in Publs Seto Mar. Biol. Lab., 1964, XII (1). [p.8, Fig.177].
Female: a, urosome (dorsal); b, last thoracic segment and genital somite (lateral left side); c, Mxp; d, P5.
Nota: The urosome segments and furca are in the proportional lengths as 44:14:10:7:25 (right) = 100. The genital somite is slightly asymmetrical. A1 over-reaches the furcal rami by 2 terminal segments

Male: e, right P5; f, left P5; g, 1st and 2nd segment of exopod of left P5.
Nota: The urosome segments and furca are in the proportional lengths as 22:17:16:12:9:24 = 100. A1 extends to the distal margin of the anal segment.


Espèce Heterorhabdus fistulosus - Planche 4 de figures morphologiquesissued from : M.V. Heptner in Trudy. Inst. Okeanol., 1971, 92. [p.150, Fig.36].
Female & Male;
forma tuberculata Figs. 1, 2, 5-8.
Forma typica Figs. 3, 4, 9, 11.


Espèce Heterorhabdus fistulosus - Planche 5 de figures morphologiquesHeterorhabdus fistulosus female:
1 - See key to species groups of Heterorhabdus: ''fistulosus'' Group (p.90, 110).
2 - Dorsally, genital somite widest in anterior half; dorsally as well as laterally, genital prominence for short of reaching posterior end of somite (Fig.80-g, h).


Espèce Heterorhabdus fistulosus - Planche 6 de figures morphologiquesHeterorhabdus fistulosus male:
1 - See key to species groups of Heterorhabdus: ''fistulosus'' Group (p.90, 110).
2 - Basal inner lobe of right P5 elongate (Fig.81-f). Lateral conical process and outer spine of 2nd exopodal segment of left P5 elongate, their combined lengths approxiamtely 2/3 length of segment (Fig.81-i).

Ref. compl.:
Shimode & al., 2005 (p.113 + poster); Park & Ferrari, 2009 (p.143, Table 8, biogeography)
NZ: 3

Carte de distribution de Heterorhabdus fistulosus par zones géographiques
Loc:
Japan (Izu region), Kuril-Kamchatka Trench, off N California

Type locality: Izu region (Japan).

For Park (2000, p.112), the species is apparently confined to the northern Pacific.
N: 4
Lg.:
(23) F: 3,95-3,5; M: 3,85-3,5; (121) F: 3,6-3,39; M: 3,45; (824) F: 3,72-3,4; M: 3,56-3,4; {F: 3,39-3,95; M: 3,40-3,85}
Rem.: "Fistulosus" Group.
Voir aussi les remarques en anglais
Dernière mise à jour : 20/05/2017

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Razouls C., de Bovée F., Kouwenberg J. et Desreumaux N., 2005-2019. - Diversité et répartition géographique chez les Copépodes planctoniques marins. Sorbonne Université, CNRS. Disponible sur http://copepodes.obs-banyuls.fr [Accédé le 20 juin 2019]

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