Fiche d'espèce de Copépode
Calanoida ( Ordre )
    Diaptomoidea ( Superfamille )
        Pseudodiaptomidae ( Famille )
            Pseudodiaptomus ( Genre )
Pseudodiaptomus inopinus - species complex  Burckhardt, 1913   (F,M)
Syn.: Non Pseudodiaptomus japonicus Kikuchi,1928;
Schmackeria inopinus : Marsh, 1933 (p.44, figs.F,M, Rem.); Shen & Tai, 1962 (p.101, Rem.); Shen & Lee, 1963 (p.578, Rem.); Chen & Zhang, 1965 (p.81, figs.F); .
Non Pseudodiaptomus inopinus : Smirnov, 1929 (p.318, fig.F, M); Tanaka, 1966 (p.42, fig.F); Mashiko & Inoué, 1952 (p.184, fig.F, M); Kos, 1976 (Vol.II, figs.F,M, Rem.); Kikuchi & al., 1978 (p.25, fig.F, M); Kos, 1984 (1985) (p.239, fig.F, M, Rem.); Oka & al., 1991 (p.85, fig.F); Chihara & Murano, 1997 (p.893, fig.F, M); Eyun & al., 2007 (p.265, molecular biology); Lee & al., 2007 (p.140, fig.F, M); Sakagychi & Ueda, 2010 (p.62, fig.F, M, Rem.); 2011 (p.124, fig.F, M, Rem.); Soh & al., 2012 (p.233, fig.F, M, Rem).
Ref.:
Pseudodiaptomus inopinus sensu stricto:Burckhardt, 1913 (p.379-394, Figs.F, M: 11E, 12H, Rem. p.392: phylogeny); Sewell, 1948 (p.421); Walter, 1986 (p.132); 1986 a (p.503); 1987 (p.367); Walter & al., 2006 (p.203, Rem.; Ueda & Sakaguchi, 2019 (p.35, descr. F, M, Rem.).
Espèce Pseudodiaptomus inopinus - species complex - Planche 1 de figures morphologiquesissued from : H.Y. Soh, H.-L Suh, O.H. Yu & S. Ohtsuka in Hydrobiologia, 2001, 448. [p.218, Fig.3, C].
Female (from W Korea): scanning electron micrographs of the genital area.


Espèce Pseudodiaptomus inopinus - species complex - Planche 2 de figures morphologiquesissued from : J.R. Cordell, M. Rasmussen & S.M. Bollens in Mar. Ecol. Prog. Ser., 2007, 333. [p.216, Fig.4].
Male (from Chehalis River estuary): P5 of 2 morphotypes; A, paddle-shaped; B, thumb-shaped.


Espèce Pseudodiaptomus inopinus - species complex - Planche 3 de figures morphologiquesissued from : T.C. Walter, S. Ohtsuka, S. Putchakarn, K. Pinkaew & S. Chullasorn in Proc. Biol. Soc. Washington, 2002, 115 (3). [p.664, Fig.9, A-B].
Female: genital double somite (ventral); B, same (magnification).
Scale bars: 0.1 mm.


Espèce Pseudodiaptomus inopinus - species complex - Planche 4 de figures morphologiquesIssued from : H.Y. Soh, S.W. Kwon, W. Lee & Y.H. Yoon in Zootaxa, 2012, 3368. [p.233, Fig.3].
Female: SEM photographs of the genital double-somite from P. koreanus (A) [= P. japonicus] and P. inopinus (B).
White arrows indicate process between gonopores; black arrows indicate the posterior process of genital flap.


Espèce Pseudodiaptomus inopinus - species complex - Planche 5 de figures morphologiquesIssued from : C.D. Marsh in Proc. U.S. natn. Mus., 1933, 82 (18) (2959). [Pl. 22, fig.1]. As Schmackeria inopinus.
Female (from Yangtze Kiang): 1, urosome dorsal).


Espèce Pseudodiaptomus inopinus - species complex - Planche 6 de figures morphologiquesIssued from : S.O. Sakaguchi & H. Ueda in Plankton Benthos Res., 2018, 13 (4). [p.174, Fig.1].
Published illustrations of Pseudodiaptomus inopinus species complex (A-D, K) genital operculum, ventral view; (E) genital double-somite, right lateral ,view; F-H, L) female left P5; (I, J) ventral surface of the male 2nd urosomite.
Sources of figures: A, B and G, Sakaguchi & Ueda (2011), 2A-C, respectively; C, H and J, Soh & al (2012), figure 2C, 6B and 7C, respectively; I, K and L, Sakaguchi & Ueda (2010), figure 8C, 2C and 5E, respectively; D, Burckhardt (1313), figure 9 of plate 11F; E and F, Kikuchi (1928), figures 13 and 14 of plate 19, respectively.
Arrowheads a, b and c indicate the posterior process of the genital operculum, the central part of the genital flap surrounding gonopores, and the tip of the distomedial process on the 1st exopodal segment , respectiively.
Scale bar of 0.1 mm is applicable for A-C and G-I.
Only as ''LP-form'' = P. yamato.


Espèce Pseudodiaptomus inopinus - species complex - Planche 7 de figures morphologiquesIssued from : S.O. Sakaguchi & H. Ueda in Plankton Benthos Res., 2018, 13 (4). [p.178, Table 2].
Taxonomic status of Pseudodiaptomus japonicus and related references.
Only ''LP-form\"\" = P; yamato.


Espèce Pseudodiaptomus inopinus - species complex - Planche 8 de figures morphologiquesIssued from : G. Burckhardt in Zool. Jb., Syst., 1913, 34 (4). [p.379-394; Rearranged after Ueda (pers. comm., 2019): Taf. 11E, figs.2, 3, 5, 7; Taf.11. 11F, fig.9; Taf. 12, figs.1-2, 7-8].
Female: A, habitus (dorsal) with eggs sacs; B, posterior region of prosome; C, genital operculum; D, caudal ramus; E, P5.

Male: F, habitus (dorsal); G, H, P5.


Espèce Pseudodiaptomus inopinus - species complex - Planche 9 de figures morphologiquesIssued from : H. Ueda & S.O. Sakaguchi in Plankton & Benthos Res., 2019, 14 (1); [p.36, Fig.4, A-E, G, H].
Female (from Lake Tahiu, China): A-B, habitus (dorsal and lateral, respectively); C-D, 3rd pediger to genital double-somite (dorsal and lateral, respectively); E, last pediger (posterior); G, P5; H, right leg of P5.

Nota;
- 2nd and 3rd pedigers with row of conspicuous spinules along posteromedial margin.
- Last pediger with prominently protruding posterior projection and 3 groups of spinular rows on each side, i.e. row of slightly curved long spinules on distolateral corner, rows of medium or fine spinules on distomedial surface fig.4E), and short row of fine spinules on lateral surface (fig.4I, indicated by arrow).
-P5 with group of a few spinules ayt midlength on medial margin of 1st exopodal segment.


Espèce Pseudodiaptomus inopinus - species complex - Planche 10 de figures morphologiquesIssued from : H. Ueda & S.O. Sakaguchi in Plankton & Benthos Res., 2019, 14 (1); [p.36, Fig.4, F].
Female: F, genital operculum.
Nota: Genital operculum with long posterior processes; process slightly longer than distance between tips (fig.4F, 'a' > 'b').


Espèce Pseudodiaptomus inopinus - species complex - Planche 11 de figures morphologiquesIssued from : H. Ueda & S.O. Sakaguchi in Plankton & Benthos Res., 2019, 14 (1); [p.36, Fig.4, I-L, N, O].
Male (from Lake Taihu, China): I-J, habitus (dorsal and lateral, respectively); K, last three pedigers and urosome (lateral); L, 2nd urosomite (ventral); N, anal somite and caudal rami (dorsal); O, P5 (posterior).

Nota:
- 2nd and 3rd pedigers with row of conspicuous spinules along posterolateral margin.
- 2nd urosomite with spinulation (fig.4L).
- Caudal ramus length 2.8 times width.
- P5 as fig. 4O.


Espèce Pseudodiaptomus inopinus - species complex - Planche 12 de figures morphologiquesIssued from : H. Ueda & S.O. Sakaguchi in Plankton & Benthos Res., 2019, 14 (1); [p.36, Fig.4, L, M].
Male: L, 2nd urosomite (ventral); M, photograph of ventral spinulal rows in L.
Nota: 2nd urosomite with similar spinulation to P. yamato, but lateral spinular row more conspicuous than P. yamato, and spinules of transverse ventral row (fig.4L, M) as large as those of oblique ventrolateral row.

Ref. compl.:
The references following does not account the synonymies from this species complex.
Cordell & al., 1992 (p.260); 1992 a (p.171, occurence); Ohtsuka & al., 1995 (p.159); Cordell & Morrison, 1996 (p.629, invasive species); Cordell & al., 1997 (p.2, invasive species); Mauchline, 1998 (p.507); Hairston & Bohonak, 1998 (p.23, Table 3, genetic); Uye & al., 2000 (p.193, fig.7 : abundance vs t°, Sal.); Humphrey, 2008 (p.64, 84: Appendix A); Ohtsuka & al., 2008 (p.115, Table 4, 5, Rem.: in Osaka Harbour); Sakaguchi & al., 2011 (p.18, Table 1, 2, occurrences); DiBacco & al., 2012 (p.483, Table S1, ballast water transport); Moon & al., 2012 (p.1, Table 1); Suzuki, K.W. & al., 2013 (p.15, Table 2, 3, 4, fig.6, estuaries, annual occurrence); Park E-O. & al., 2013 (p.1, annual variation, sex ratio); Sabia & al., 2015 (p.460, Table 3, Rem.); Ohtsuka & Nishida, 2017 (p.578, 579, Rem.)
NZ: 4

Carte de distribution de Pseudodiaptomus inopinus - species complex par zones géographiques
Espèce Pseudodiaptomus inopinus - species complex - Carte de distribution 2
Carte de 1996
Espèce Pseudodiaptomus inopinus - species complex - Carte de distribution 3Issued from : E-O. Park, J.R. Cordell & H.Y. Soh in Zool. Stud., 2013, 52 (7). [p.7, Fig.7]. Doubtful identification of the species.
Seasonal variations in the adult sex composition of P. inopinus from Mankyung River estuary (South Korea).
(A): Oligohaline, (B): mesohaline, (C): polyhaline. Circle : female; triangle: male.

Nota: Males were more abundant than females throughout the study period (January to December 2000) and across the entire range of salinity, but the ratio of males to females exceeded 50% under oligohaline conditions in January, mesohaline conditions in late fall and winter, and polyhaline conditions in early winter..
Gravid females appeared in oligohaline conditions in March, July, and September and accounted for 50% of all females present in September. Under mesohaline conditions, they occurred in June to October, and under polyhaline conditions, they occurred only in June and October, and >50% of all females were gravid in October.
These facts indicate that abundance of P. inopinus as P. poplesia may be controlled by Chl a concentrations and salinity conditions.
Loc:
China Seas (Bohai Sea, Yellow Sea, East China Sea, South China Sea), Yangtze-Kiang Riv.), Korea (S & W), Muan Bay, Mankyung River estuary, E & W Japan, south estuaries: Chikugo, Midori & Kuma Rivers), Nansei Is., Sakhalin Is., British Columbia (Columbia River estuary).
Type locality: Lake Tahiu (China)
N: 23 ??
Lg.:
(97) F: 1,28-1,22; (290) F: 2-2,2; (866) F: 1,1-1,5; M: 0,9-1,36; (1062) F: 1,40; 1,36; (1099) F: 1,38-1,44; M: 1,10-1,15; (1232) F: 1,01-1,22; M: 1,1; {F: 1,01-2,28; M: 1,1-1,36}
Rem.: dulçaquicole.
Introduit d'Asie dans les rivières de l'Etat de Washington et en Colombie Britannique par transport dans les ballasts des navires.
Voir aussi les remarques en anglais
Dernière mise à jour : 05/09/2019

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Razouls C., Desreumaux N., Kouwenberg J. et de Bovée F., 2005-2020. - Biodiversité des Copépodes planctoniques marins (morphologie, répartition géographique et données biologiques). Sorbonne Université, CNRS. Disponible sur http://copepodes.obs-banyuls.fr [Accédé le 05 décembre 2020]

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