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Calanoida ( Order ) |
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Clausocalanoidea ( Superfamily ) |
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Aetideidae ( Family ) |
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Aetideus ( Genus ) |
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Aetideus divergens Bradford, 1971 (F,M) | |
| | | | | | | Syn.: | Aetideus armatus : Campbell, 1929 (p.311); ? A. armatus : Tanaka, 1957 a (p.31, figs.F,M) | | | | Ref.: | | | Bradford, 1971 (p.24,figs.F,M); Gardner & Szabo, 1982 (p.200, figs.F, M); Markhaseva, 1996 (p.17, figs.F,M, Rem.) |  issued from : J.M. Bradford in N.Z. Jl Mar. Freshw. Res., 1971, 5 (1). [p25, Fig.9]; From off British Columbia: 52°02'N, 132°53'W). Female: a, habitus (dorsal); b, idem (lateral right side); c, genital segment and posterior thoracic points (lateral right side); d, e, rostrum (from two specimens). Nota: Seminal receptacle with a moderately long thick tube, about 4 times as long as wide, connecting the dorsal and ventral sacs. Mouth parts and swimming legs identical with those of A. armatusMale: f, habitus (ventral); g, idem (lateral right side); h, P5. Nota: Rostrum absent. All appendages as in A. australis.
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 issued from : O. Tanaka in Publ. Seto Mar. Biol. Lab., 1957, VI (1). [p.32, Fig.23]. As Aetideus armatus. Female (from Sagami Bay, Japan): a, habitus (dorsal); b, forehead (lateral); c, last thoracic segment and urosome (lateral left side); d, rostrum; e, P1 (right leg is of abnormal structure); f, P2. Nota: Rostrum with a knob at the middle of the base. Proportional lengths of urosomites and furca 35:16:14:12:23 = 100. A1 (23-segmented) extends to distal end of furca. Mx1 has 9 setae on outer lobe, 11 setae on exopod, 6+3+4 setae on endopod, 5 setae on 2nd basal segment. Terminal spine of exopod of P2 has 17 teeth. Male (from Sagami Bay, Japan): g, forehead (lateral); h, last thoracic segment and urosome (lateral left side); i, P5. Nota: Rostrum reduced, represented by only a small knob. Proportional lengths of urosomites and furca 16:23:23:21:2:15 = 100. Anal segment almost concealed beneath the preceding. A1 reaches back to middle of third urosomal segment. End-spine of P2 has 26 teeth.
| | | | | Compl. Ref.: | | | Robertson & Frost, 1977 (p.231, feeding); Mackas & Anderson, 1986 (p.115, Table 2); Shih & Marhue, 1991 (tab.2, 3); Mauchline, 1998 (tab.20, 21); Rebstock, 2002 (p.71, Table 3, Fig.5, climatic variability); Humphrey, 2008 (p.83: Appendix A); Galbraith, 2009 (pers. comm.); DiBacco & al., 2012 (p.483, Table S1, ballast water transport) | | | | NZ: | 1 + 1 doubtful | | | | | |  issued from : J.M. Bradford in N.Z. Jl Mar. Freshw. Res., 1971, 5 (1). [p.35, Fig.14].
North Pacific Ocean showing distribution of four Aetideus species. |
| | | | Loc: | | | Pacif. NE (off British Columbia), British Columbia, Fjord system (Alice Arm & Hastings Arm), Portland Inlet, Puget Sound (near Seattle), ? Japan (Sagami, Suruga, Izu-Bonin trench | | | | N: | 8 | | | | Lg.: | | | (37) F: 1,9-1,69; M: 1,43-1,25; ? (39) F: 1,82; M: 1,8; {F: 1,69-1,90; M: 1,25-1,43} | | | | Rem.: | epi-mesopelagic.
A doubt subsists concerning the identity of the Tanaka's (1957) form.
After Robertson & Frost (1977) the feeding behavior of this species, usually occur at subsurface depths seem to be adapted for feeding on large particles, possibly large phytoplanctonic organisms and fecal pellets, which sink out of the mixed layer. | | | Last update : 17/04/2013 | |
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 Any use of this site for a publication will be mentioned with the following reference :
Razouls C., de Bovée F., Kouwenberg J. et Desreumaux N., 2005-2012. - Diversity and Geographic Distribution of Marine Planktonic Copepods. Available at http://copepodes.obs-banyuls.fr/en
[Accessed May 19, 2013] © copyright 2005-2012 CNRS, UPMC
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