Species Card of Copepod
Cyclopoida ( Order )
    Oithonidae ( Family )
        Oithona ( Genus )
Oithona aruensis  Früchtl, 1923   (F,M)
Syn.: Oithona brevicornis aruensis : Früchtl, 1923 (p.454); 1924 b (p.66); Wellershaus, 1970 (p.478, Rem.F);
O. brevicornis minor : Nishida & al., 1977 (p.131);
O. brevicornis Uchima, 1979 (p.59); Oithona sp 1: Nishida, 1981 (p.149)
Ref.:
Herbst, 1964 (p.156); Nishida & Ferrari, 1983 (part., p.74, Descr.F, M, figs.F,M, Rem.); Ferrari & Orsi, 1984 (p.119); Ueda, 1985 (p.125); Nishida, 1985 a (p.17, 38, 141); 1986 a (p.914, Rem.); Chihara & Murano, 1997 (p.935, Pl.199,203: F,M); McKinnon, 2000 (p.108, Rem.); Temnykh & Nishida, 2012 (p.425, fig. 2, Table 1, Rem.)
Species Oithona aruensis - Plate 1 of morphological figuresIssued from : A. Temnykh & S. Nishida in Aquatic Inv., 2012, 7 (3). [p.427, Fig.2].
Character comparison between Oithona brevicornis (A-D), O. aruensis (E-G), and O. davisae (H-K).
A, E, H: rostrum; B, F, I: Md; C, G, J: Mx1, indicating distal-most spine (thin arrow) of 1st inner lobe, endopod (arrowhead), seta on 2nd inner lobe (dotted arrow, absent in J) and seta on 2nd basal segment (thick arrow, absent in J); D: genital double-somite and next somite, lateral view, indicating rows of hairs (arrows) in O. brevicornis; K: genital double-somite, lateral view. Not at scale. After Nishida (1985: A-D), Nishida & Ferrari (1983: E-G) and Ferrari & Orsi (1984: H-K).


Species Oithona aruensis - Plate 2 of morphological figuresIssued from : A. Temnykh & S. Nishida in Aquatic Inv., 2012, 7 (3). [p.428, Table 1].
Characteristics in O. aruensis adult female.

Nota: Compare with the species O. wellershausi, O. brevicornis, O. davisae, and O. davisae from the Black Sea.

Compl. Ref.:
Nagasawa & Marumo, 1984 (p.277); McKinnon & Klumpp, 1998 (tab.1); Ueda, 2001 (p.96, occurrence); Ohtsuka & al., 2008 (p.115, Table 5); Saitoh & al., 2011 (p.85, Table 4, 5); Chew & Chong, 2011 (p.127, Table 3, abundance vs location); Zamora-Terol & Saiz, 2013 (p.376, Rem.: Table 3, egg production, Table 5: fecundity); Ohtsuka & Nishida, 2017 (p.565, Table 22.1);
NZ: 5

Distribution map of Oithona aruensis by geographical zones
Species Oithona aruensis - Distribution map 2Issued from : S. Nishida in Bull. Ocean Res. Inst., Univ. Tokyo, 1985, No 20. [p.141, Fig.93].
Indo-Pacific geographical distribution of Oithona aruensis and Oithna davisae.
Species Oithona aruensis - Distribution map 3Issued from : S. Zamora Terol in Tesis Doc. Univ. Politèc. Catalunya, 2013 [p.82-83, Table 3].
Comparison of egg production and clutch sizes among different species of Oithona from field and lab studies.
b: eggs per sac.
Species Oithona aruensis - Distribution map 4Issued from : S. Zamora Terol in Tesis Doc. Univ. Politèc. Catalunya, 2013 [p.82-83, Table 3].
Comparison of egg production and clutch sizes among different species of Oithona from field and lab studies.
b: eggs per sac.
Also, see: Oithona attenuata, O. colcarva, O. davisae, O. nana, O. plumifera, O. setigera, O. similis, O. simplex.
Loc:
Straits of Malacca (upper and lower Sangga estuary), NE Australia (Haughton Riv.), Indonesia-Malaysia (Aru Is.), Palau Is., China Seas, Okinawa (Kabira Bay, lagoons), Japan (Tokyo Bay)
N: 11
Lg.:
(625) F: 0,435-0,415; (866) F: 0,44-0,46; M: 0,4-0,41; {F: 0,415-0,460; M: 0,400-0,410}
Rem.: See in Oithona robertsoni Table 2 from McKinnon (2000, p.108).
After Temnykh & Nishida (2012, p.429)O. aruensis is an estuarine species while O. brevicornis is more stenohaline and distributed in more saline waters than the former, although their distributions may partially overlap.
Last update : 29/09/2020
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Razouls C., Desreumaux N., Kouwenberg J. and de Bovée F., 2005-2021. - Biodiversity of Marine Planktonic Copepods (morphology, geographical distribution and biological data). Sorbonne University, CNRS. Available at http://copepodes.obs-banyuls.fr/en [Accessed April 11, 2021]

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