Species Card of Copepod
Calanoida ( Order )
    Diaptomoidea ( Superfamily )
        Acartiidae ( Family )
            Acartia ( Genus )
                Acartiura ( Sub-Genus )
Acartia (Acartiura) discaudata  (Giesbrecht, 1881)   (F,M)
Syn.: Dias discaudata Giesbrecht, 1881; 1882.
Ref.:
Giesbrecht, 1892 (p.507, 522, figs.F,M); Giesbrecht & Schmeil, 1898 (p.153); Sars, 1903 (p.152, figs.F,M); Steuer, 1923 (p.11, figs.F,M); Gurney, 1931 a (p.228, figs.F,M); Wilson, 1932 a (p.163, figs.F,M); Rose, 1933 a (p.272, figs.F,M); Farran, 1948 a (n°12, p.3, figs.F); Razouls, 1972 (p.95, Annexe: p.97); Bradford, 1976 (p.195, figs.M); Brylinski, 1981 (p.257, figs.F,M); Schnack, 1982 (p.89, figs. Mx2, Md, Mxp); Behrends & al., 1997 (p.594, figs.F); Bradford-Grieve, 1999 (n°181, p.3, figs.F,M); Castro-Longoria, 2001 (p.225, fig.2); Avancini & al., 2006 (p.108, Pl. 76, figs.F,M, Rem.);Vives & Shmeleva, 2007 (p.416, figs.F,M, Rem.).
Species Acartia (Acartiura) discaudata - Plate 1 of morphological figuresissued from : Sars G.O. in An Account of the Crustacea of Norway. Vol. IV. Copepoda Calanoida. Published by the Bergen Museum, 1903. [Pl.CII]. Famale and Male.
Rem: P5 = fifth leg


Species Acartia (Acartiura) discaudata - Plate 2 of morphological figuresissued from : J.M. Brylinski in J. Plankton Res., 1981, 3 (2). [Fig.2, p.257].
Structure of P5 of the Acartia in the wet docks of the harbour of Dunkirk (Strait of Dover). Male and Female

a: Acartia clausi; b: A. tonsa, c: A. discaudata, d: A. bifilosa

c.f.: curved finger, c.n.: curved needle, d.t.: distal tooth, l.: lamella, l.p.: lamellar process, p.t.: proximal tooth, s.: setae, sp.: spines, 3, segment 3 of left leg.
Rem: P5 = fifth leg


Species Acartia (Acartiura) discaudata - Plate 3 of morphological figuresssued from : J. M. Bradford in N.Z. J. Mar. Freshw. Res., 1976, 10 (1). [p.196, Fig.32b]
Male (From W France: Brest Harbour): P5 (posterior view).


Species Acartia (Acartiura) discaudata - Plate 4 of morphological figuresissued from : W. Giesbrecht in Fauna Flora Golf. Neapel, 1892, 19. [Taf.43, Fig.2].
Female: 2, habitus (dorsal).


Species Acartia (Acartiura) discaudata - Plate 5 of morphological figuresissued from : W. Giesbrecht in Fauna Flora Golf. Neapel, 1892, 19. [Taf.43, Fig.24].
Male: 24, P5 (Ps = left leg; Pd = right leg).


Species Acartia (Acartiura) discaudata - Plate 6 of morphological figuresissued from : W. Giesbrecht in Fauna Flora Golf. Neapel, 1892, 19. [Taf.30, Fig.27].
Female: 27, P5.


Species Acartia (Acartiura) discaudata - Plate 7 of morphological figuresissued from : C. Razouls in Th. Doc. Etat Fac. Sc. Paris VI, 1972, Annexe. [Fig.56, A, G]. As var. mediterranea.
Female (from Banyuls, G. of Lion): A, urosome and spermatophore (lateral); G, P5.


Species Acartia (Acartiura) discaudata - Plate 8 of morphological figuresissued from : C. Razouls in Th. Doc. Etat Fac. Sc. Paris VI, 1972, Annexe. [Fig.57, B]. As Acartia discaudata var. mediterranea.
Male: P5.


Species Acartia (Acartiura) discaudata - Plate 9 of morphological figuresissued from : P. Crisafi & M. Crescenti in Boll. Pesca Piscic. Idrobiol., 1972 (1974), 27 (2). [p.242, Pl.II]. As Acartia discaudata var. mediterranea.
Female (from Milazzo, Sicily): f, habitus (dorsal); f ad, posterior thoracic part and urosome (dorsal); f ad l, urosome with spermatophore (lateral); f P5, P5.

Male: m ad (urosome (dorsal); m P5, P5.


Species Acartia (Acartiura) discaudata - Plate 10 of morphological figuresissued from : A. Steuer in Sber. Akad. Wiss. Wien, mat.-nat. K1, 138, Abt.1, 1929. [p.504, Fig.3]. As Acartia discaudata var. mediterranea nov. var.
Male (from Naples, Mediterranean Sea]: 3, P5. B = basipodite; Re = exopodite.


Species Acartia (Acartiura) discaudata - Plate 11 of morphological figuresissued from : A. Steuer in Sber. Akad. Wiss. Wien, mat.-nat. K1, 138, Abt.1, 1929. [p.503, Fig.4]. As Acartia discaudata var. mediterranea nov. var.
Male (from Naples, Mediterranean Sea]:


Species Acartia (Acartiura) discaudata - Plate 12 of morphological figuresIssued from : M.G. Mazzocchi in Guida al Riconoscimento del plancton dei Mari Italiani, Vol. II, 2006. [p.84, Tav. 76]. After A. Comaschi.
As Acartia mediterranea var. mediterranea:
Female: a, habitus (dorsal); b, urosome (dorsal); c, same (lateral); d, P5.

Male: e, urosome (dorsal); f, P5.

Acartia discaudata:
Female: g, urosome (dorsal); h, last thoracic segment with P5 and genital segment (lateral); i, left P5.

male: L, P5.

Compl. Ref.:
Gadeau de Kerville, 1894 (p.81); I.C. Thompson, 1903 a (p.31); Pearson, 1906 (p.31); Rose, 1925 (p.152); 1927 a (p.208); Sewell, 1948 (p.483); C.B. Wilson, 1950 (p.152); Fleury, 1950 (p.47, fig.2); Conover, 1959 (p.259, Table 1, 2, respiration); Marshall & Orr, 1962 (tab.3); Gaudy, 1962 (p.93, 99, Rem.: p.115) ; Mazza, 1966 (p.72); Champalbert, 1969 a (p.609); Paulmier, 1971 (p.168); Lefèvre-Lehoërff, 1972 (p.1681); Della Croce & al., 1972 (p.1, fig.2, Rem.); Guglielmo, 1973 (p.399); Arndt & Heidecke, 1973 (p.599, 603); Vives, 1982 (p.295); Castel & Courties, 1982 (p./417, Table II, fig.4, spatial & monthly distribution); d'Elbée, 1984 (p.24, Fig.3); Williams & Collins, 1985 (p.27); Lozano Soldevilla & al., 1988 (p.60); Lakkis, 1990 (p.63); Rodriguez & Jiménez, 1990 (p.497); Jouffre & al., 1991 (p.489, lagoon); Seguin & al., 1993 (p.23); Sautour & Castel, 1993 (p.279); Lakkis, 1994 (p.481); Behrends & al., 1997 (p.594, anomaly); Hure & Krsinic, 1998 (p.103); Mauchline, 1998 (tab.47); El-Sherif & Aboul Ezz, 2000 (p.61, Table 3: occurrence); d'Elbée, 2001 (tabl. 1); Holmes, 2001 (p.34, Rem.); Belmonte & Potenza, 2001 (p.173); Uysal & al., 2002 (p.17, tab.1); Zerouali & Melhaoui, 2002 (p.91, Tableau I, fig.5); Vaglio & al., 2005 (p.163); Uriarte & Villate, 2005 (p.863, tab.I); Valdés & al., 2007 (p.104: tab.1); Vincent & al., 2007 (p.295, Table 1, 3, 4, 5, 7, nitrogen transfert); Brylinski, 2009 (p.253: Tab.1, p.256: Rem.); Aravena & al., 2009 (p.621, seasonal & spatial distribution v.s. environmental factors); Mazzocchi & Di Capua, 2010 (p.423); Mazzocchi & al., 2011 (p.1163, fig.6, long-term time-series 1984-2006); Mazzocchi & al., 2012 (p.135, annual abundance 1984-2006); Boyer & al., 2012 (p.2, fig.2, abundance & annual change); Zizah & al., 2012 (p.79, Table I, Rem.: p.89 as A. grani); Belmonte & al., 2013 (p.222, Table 2, abundance vs stations); Lindeque & al., 2013 (p.737, molecular identification); Boyer & al., 2013 (p.125, egg production vs environmental parameters); Zaafa & al., 2014 (p.67, Table I, occurrence): Uriarte & al., 2016 (p.718, fig.5: abundance vs years 1998-2011); Benedetti & al., 2016 (p.159, Table I, fig.1, functional characters); Ben Ltaief & al., 2017 (p.1, Table III, Summer relative abundance); El Arraj & al., 2017 (p.272, table 2); Belmonte, 2018 (p.273, Table I: Italian zones); Richirt & al., 2019 (p.3, Table 1, fig.2, 3, 4, 5, abundance changes vs years 1998-2014, table 2: diversity index )
NZ: 8

Distribution map of Acartia (Acartiura) discaudata by geographical zones
Species Acartia (Acartiura) discaudata - Distribution map 3
Chart of 1996
Species Acartia (Acartiura) discaudata - Distribution map 4Issued from : S. Boyer, M. Bouvy & D. Bonnet in Estuar, Coast. Shelf Sci., 2013, 117. [p.129, Fig.3 A, B].
Acartia discaudata: A, Abundance (ind. 33) over a year at the monitoring station in 2008, 2009 and 2010. B, Egg production (EP) .
Bars: standards deviations.
Samples collected at a fixed station (43°25'N, 03°40'E) in the Thau lagoon, close to Sète channel, with a WP2 net (200 µm mesh aperture). Mesozooplankton collected by horizontal hauls at 1 m depth.
Species Acartia (Acartiura) discaudata - Distribution map 5Issued from : S. Boyer, M. Bouvy & D. Bonnet in Estuar, Coast. Shelf Sci., 2013, 117. [p.128, Fig.2].
Environmental parameters at the sampling station in 2008, 2009, 2010, in the Thau lagoon, close to Sète channel.
Bars: Standards deviations.
A: temperature (°C); B, salinity (psu); c, chlorophyll a concentration (µg /L).
Species Acartia (Acartiura) discaudata - Distribution map 6Issued from : S. Boyer, M. Bouvy & D. Bonnet in Estuar, Coast. Shelf Sci., 2013, 117. [p.132, Fig.6, A].
Acartia discaudata: Relationship between egg production (EP) and prosome length (PL), in the Thau lagoon, close to Sète channel.
Black dotted lines represent the linear regression for all points.
Species Acartia (Acartiura) discaudata - Distribution map 7Isued from : S. Boyer, M. Bouvy & D. Bonnet in Estuar, Coast. Shelf Sci., 2013, 117. [p.130, Table 2].
Summary results after model averaging: effects of each single environmental parameter Chl a (Chlorophyll a concentration), T (temperature), S (salinity and their interactions (:) on egg production in Acartia clausi and Acartia discaudata at the sampling station in 2008, 2009, 2010, in the Thau lagoon, close to Sète channel.
Species Acartia (Acartiura) discaudata - Distribution map 8Issued from : S. Boyer, M. Bouvy & D. Bonnet in Estuar, Coast. Shelf Sci., 2013, 117. [p.131, Fig.5, B].
Acartia discaudata: Egg production (EP) in function of salinity (S) and temperature (T) in the Thau lagoon, close to Sète channel.
Blue circles: 2008; red circles: 2009; black circles: 2010.
Species Acartia (Acartiura) discaudata - Distribution map 9Issued from : I. Uriarte, F. Villate & A. Iriarte in J. Plankton Res., 2016, 38 (3). [p.724, Fig.5].
Monthly time-series from 1998 to 2011 of Acartia margalefi (black) and Acartia discaudata (grey) from inner Bilbao estuary (NW Spain). Thicker lines are moving averages. R0 is the Spearman's rank correlation coefficient (P <0.05; **P < 0.01).

Nota: A. discaudata showed positive correlation with precipitation and NAO index.
Loc:
off Woods-Hole (in Wilson, 1932 a), Senegal, Canary Islands, off Morocco, Bay of Biscay (Bilbao estuary, St.-Jean-de-Luz, Arcachon Bay, Gironde estuary, Belon estuary), Ireland, Bristol Channel, English Channel, Morlaix estuary, Granville, Southampton, Pas de Calais, Norway, North Sea, Bay of Kiel, Gulf of Mecklenburger, Baltic Sea, G. of Bothnia, Faroe, off W Tangier, Medit. (Alboran Sea, Algiers Bay, N Tunisia, Castellon, Banyuls, Thau lagoon, Marseille (rare), Genova, Ligurian Sea, Tyrrhenian Sea, G. of Naples, Strait of Messina, G. of Gabes Taranto, Adriatic Sea, Lebanon), N Red Sea (Hurgada) in El-Sherif & Aboul Ezz, 2000 (p.71) [Indonesia-Malaysia, Philippines (in Wilson,1950)]
N: 79
Lg.:
(46) F: 1,05-1; M: 0,9; (65) F: 1,2; M: 1,1; (167) F: 1,2-1; M: 1,1-0,9; {F: 1,00-1,20; M: 0,90-1,10}
Rem.: Surface down to 700 m.
The female P5 may show anomalies (see Behrends et al., 1997).
Acartia discaudata mediterranea Steuer,1929 (F,M)
Ref.: Steuer, 1929 (p.502, figs.F,M); Rose, 1933 a (p.272: figs.F,M); Gaudy, 1962 (p.93, 99, Rem.: p.115) ; Crisafi & Crescenti, 1972 (1974) (p.226, figs.F,M, juv.); Bradford, 1976 (p.195, Rem.); Bradford-Grieve, 1999 (N°181, p.4, Rem.)
Ref. compl.: Guglielmo, 1973 (p.399); Lakkis & Abboud, 1976 (p.81); Kovalev & Shmeleva, 1982 (p.85); Guerrero & Rodriguez, 1997 (p.584); Belmonte & Potenza, 2001 (p.173); Khelifi-Touhami & al., 2007 (p.327, Table 1); Belmonte & al., 2013 (p.222, Table 2, abundance vs stations)
Loc.: W Medit. (Naples, Milazzo, Malaga, Banyuls, Gulf of Lion: Thau lagoon; Marseille: rare, Lebanon basin), Atlant. (Arcachon)
Lg.: (325) F: 1,19-1,06

According to Brylinski (2009, p.256) this species present in the wet docks of Dunkirk harbour is very rarely collected in the sea, and then only near the coast due to its affinity for brackish waters.
Last update : 25/10/2022
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