Heterorhabdus cohibilis - Fiche d'espèce - Copépodes planctoniques marins

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Calanoida ( Ordre )	détails
Arietelloidea ( Superfamille )	détails
Heterorhabdidae ( Famille )	détails
Heterorhabdus ( Genre )	détails	Liste des espèces pour ce Genre

Heterorhabdus cohibilis Park, 2000 (F,M)

Abréviations ou symboles

Ref.:

(

Liste des auteurs analysés )

Park, 2000 (p.128, figs.F,M, Rem.)

Espèce Heterorhabdus cohibilis - Planche 1 de figures morphologiques

issued from : T. Park in Bull. Scripps Inst. Oceanogr. Univ. California, San Diego, 2000, 31. [p.251, Fig.99].
Female: a, habitus (left side); b, urosome (dorsal); c, d, genital somite (ventral, left, respectively).

Nota female:
- Cephalosome 45 % length of prosome.
- Prosome 71 % length of body and about 2.4 times length of urosome.
- Posterolateral corner of prosome rounded, overlapping anterior 1/10 length of genital somite.
- Urosome 29 % length of body.
- Length ratios of 4 urosomal somites and left caudal ramus 37.7 : 18.8 : 14.1 : 8.8 : 20.6 = 100.
- Dorsally, genital somite widest at middle, slightly asymmetrical, with a broadly curved right margin and a slightly sigmond left margin.
- Anteriorly, caudal ramus with 2 pores. Dorsal appendicular seta of left caudal ramus about 1.5 times length of that of right ramus.
- A1 extending beyond posterior end of caudal ramus by its last 2 segments.
- All cephalosomal appendages and swimming legs similar to those of H. americanus.

Male: e, right P5 (anterior); f, g, basipod of right P5 (anterior, tilted clockwise, respectively); h, left P5 (anterior); i, exopod of left P5 (anterior).

Nota male:
- Prosome 73 % length of body and about 2.6 times length of urosome.
- Urosome 28 % length of body.
- Caudal rami and setation as in female.
- Left geniculate A1 similar to that of H. spinifrons
- All other cephalosomal appendages and P1-P4 as in female.

Heterorhabdus cohibilis female:
1 - See key to species groups of Heterorhabdus: ''abyssalis'' Group (p.90, 114).
2 - Genital somite without a conical projection mediodorsally (Fig.99- a, d).
3 - Laterally, genital somite without a tubercular outgrowth posteriorly on dorsal margin (Fig.99-a).
4 - Laterally, genital operculum far short of reaching posterior end of somite (Fig.99-c).
5 - Laterally, right and left genital flanges symmetrical.
6 - Laterally, genital prominence distinctly separate from ventral wall of somite (Fig.99-d).
7 - Dorsally, as well as ventrally, lateral swellings of genital somite reaching posterior end of somite (Fig.99-b).
8 - Laterally, genital prominence far short of extending to posterior end of somite; genital somite with a low dorsal hump.
9 - Laterally, genital operculum far short of reaching posterior end of genital prominence (Fig.99-d).

Heterorhabdus cohibilis male:
1 - See key to species groups of Heterorhabdus: ''abyssalis'' Group (p.90, 114).
2 - Basis of left P5 without a well-developed inner lobe (Fig.99-h).
3 - Basal inner lobe of right P5 armed with normal bristles (Fig.99-e, g).
4 - 3rd exopodal segment of right P5 with a short terminal lobe, less than 1/3 length of terminal spine (Fig.99-e).
5 - Basal lobe of right P5 arising from anteromedial side of segment (Fig.99-e).
6 - 2nd exopodal segment of left P5 with outer spine not borne on a conical process (Fig.99-h).
7 - 3rd exopodal segment of right P5 with terminal spine longer than 1/2 length of segment (Fig.99-e).
8 - Anteriorly and when tilted clockwise, basal lobe of right P5 recurved by folding.
9 - Anteriorly, basal lobe of right P5 slightly folded (Fig.98-e).
10 - Basal lobe of right P5 not conspicuously inflated distally (Fig.99-g).

NZ:

Carte de distribution de Heterorhabdus cohibilis par zones géographiques

Carte de distribution de Heterorhabdus cohibilis pour la Zone Mers de Chine, Vietnam

Loc:

(

Glossaire géographique )

E Pacif. (equatorial), Salomon Is., Indonesia (Banda Sea), China Seas (East China Sea)

Type locality: 0°55' N, 112°50' W.

For Park (2000, p.129), the species is taken in the eastern equatorial Pacific between 00°55' S and 02°35' N and between 112°57' W and 112°36' W; in the western equatorial Pacific at 09°25' S, 159°06' E; in the Malay Archipelago at 04°40' S, 125°33' E; in the East China Sea at 25°35' N, 124°30' E.

Lg.:

(

Références des auteurs concernant les dimensions )

(824) F: 3,6-2,8; M: 3,32-2,68; {F: 2,80-3,60; M: 2,68-3,32}

Rem.:

"Abyssalis" Group.
Voir aussi les remarques en anglais

Dernière mise à jour : 17/10/2017