Species Card of Copepod
Calanoida ( Order )
    Diaptomoidea ( Superfamily )
        Acartiidae ( Family )
            Acartia ( Genus )
                Acanthacartia ( Sub-Genus )
Acartia (Acanthacartia) tropica  Ueda & Hiromi, 1987   (F,M)
Syn.: Acartia plumosa : Sewell, 1932 (p.395); 1934 (p.80); Wellershaus, 1969 (part., p.271, figs.70, 75, no 66, 67.); Abraham, 1970 (p.115, figs.1, 3); Tranter & Abraham, 1971(p.224, figs.2Af, 2Bf.)
Ref.:
Ueda & Hiromi, 1987 (p.233, figs.F,M)
Species Acartia (Acanthacartia) tropica - Plate 1 of morphological figuresissued from : H. Ueda & J. Hiromi in Crustaceana, 1987, 53 (3). [p.227, Fig.2, g-h].
Female (from Chao Praya River mouth, Thailand): g, h, posterior metasome and urosome (dorsal and lateral, respectively).
Nota: Armature on posterior corner of metasome similar to that of A. sinjiansis, but spines at ventralmost locus nearly as large as those at dorsalmost locus; each locus with 0-3 (usually 1 or 2) spines. Genital segment with 9-18 spines on posterodorsal margin; these spines not grouped at loci but evenly distributed; ventral surface with sevral rows of very minute hair-like spinules. 2nd urosomal segment with 6-10 posterodorsal spines; medial 2 spines larger than lateral ones and larger than spines on genital segment. Urosomal segment 3 with ventrolateral hairs. Caudal rami Length/width 1.9-2.2. A1 with 1 rowof spinules on each ventral surface of 9th to 12th segments.


Species Acartia (Acanthacartia) tropica - Plate 2 of morphological figuresissued from: H. Ueda & J. Hiromi in Crustaceana, 1987, 53 (3). [p.228, Fig.3, c, e, h].
Female: c, forehead (ventral); e, right A1 (8th-13th segments, ventral view); h, P5 (ventral view).


Species Acartia (Acanthacartia) tropica - Plate 3 of morphological figuresissued from : H. Ueda & J. Hiromi in Crustaceana, 1987, 53 (3). [p.229, Fig.4, f-g].
Male: f, g, urosome (dorsal and lateral, respectively).
Nota: Urosomal segment 2 with 11-12 spines on posterodorsal and posterolateral margins; lateral spines not smaller than dorsal ones; ventral surface with spines at 2 loci on each side, each locus with 1-3 spines. 3rd and 4th urosomal segments with 4-8 and 4-6 posterodorsal spines, respectively (sometimes 4 loci can be distinguished on both segments); these spines usually larger than those on 2rd urosomal segment. Anal segment with ventrolateral hairs. Caudal rami Length/width 1.1-1.3.


Species Acartia (Acanthacartia) tropica - Plate 4 of morphological figuresissued from : H. Ueda & J. Hiromi in Crustaceana, 1987, 53 (3). [p.231, Fig.5, d].
Male: d, P5 (anterior view).


Species Acartia (Acanthacartia) tropica - Plate 5 of morphological figuresissued from : H. Ueda & J. Hiromi in Crustaceana, 1987, 53 (3). [p.235, Table I].
Comparative list of characters in the Acartia plumosa - sinjiensis - tropica species group.

Compl. Ref.:
Ramaiah & al., 1996 (p.1); Ramaiah & Nair, 1997 (tab.1); Achuthankutty & al., 1998 (p.1, Table 2, fig.5); Madhu & al., 2007 (p.54, Table 4, abundance vs monsoon);
NZ: 1

Distribution map of Acartia (Acanthacartia) tropica by geographical zones
Species Acartia (Acanthacartia) tropica - Distribution map 2
Chart of 1996
Species Acartia (Acanthacartia) tropica - Distribution map 3issued from : H. Ueda & J. Hiromi in Crustaceana, 1987, 53 (3). [p.232, Fig.6].
Distribution of the three species A. plumos, A. sinjiensis, A. topica.
Species Acartia (Acanthacartia) tropica - Distribution map 4issued from : C.T. Achuthankutty, N. Ramaiah & G. Padmavati in Pelagic biogeograpgy ICoPB II. Proc. 2nd Intern. Conf. Final report of SCOR/IOC working group 93, 9-14 July 1995. Workshop Report No. 142, Unesco, 1998. [p.8, Fig.6].
Salinity ranges for A. tropica in coastal and estuarine waters of Goa (India).
Shaded area indicates the range of higher abundance.
Loc:
India (Cochin, Kerala, Bombay, Goa, Burhabalanga estuary, Salt Lakes, Bay of Bengal, Chao Praya River mouth (Thailand)
N: 9
Lg.:
(93) F: 1,04-0,93; M: 0,88-0,83; {F: 0,93-1,04; M: 0,83-0,88}
Rem.: brackish.
The species resembles A. plumosa and A. sinjiansis.
Last update : 13/08/2014
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