Spinocalanus antarcticus - Species Card - Marine Planktonic Copepods

Spinocalanus antarcticus Wolfenden, 1906 (F,M)

Taxonomy

Order Calanoida

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Superfamily Spinocalanoidea

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Family Spinocalanidae

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Genus Spinocalanus

details list species for this Genus

Abbreviations or symbols

Synonymy

Spinocalanus magnus (part.) : Brodsky, 1950 (1967) (p.125);
? Spinocalanus sp. Johnson, 1963;
Spinocalanus magnus : Bradford, 1971 b (p.18, figs.F,M); Vidal, 1971 a (p.18, 23, figs.F,M)

References

List of the studied authors

Wolfenden, 1906 (p.43, figs.); 1911 (p.217, figs.F); Sewell, 1948 (p.569, 573, 574); Vervoort, 1957 (p.42: Rem.); Damkaer, 1975 (p.30, figs.F,M, Rem.); Brodsky & al., 1983 (p.260, figs.F,M, Rem.); Bradford-Grieve, 1994 (p.103, figs.F,M); Bode & al., 2017 (p.600, Table I, III, fig. 2, 3, 4, morphology vs genetic).

Figures

Plate 1 issued from : Brodsky K.A., Vyshkvartseva N.V., Kos M.S. & Markhaseva E.L. in Opred. Faune SSSR, 1983, 135. [p.261, Fig.120].
Female.
Gn = genital field (ventral aspect); Abd = urosome.

Species Spinocalanus antarcticus - Plate 2 of morphological figures

Plate 2 issued from : Brodsky K.A., Vyshkvartseva N.V., Kos M.S. & Markhaseva E.L. in Opred. Faune SSSR, 1983, 135. [p.262, Fig.121];
Male.
np = right.

Species Spinocalanus antarcticus - Plate 3 of morphological figures

Plate 3 issued from : D.M. Damkaer in NOAA Technical Report NMFS CIRC-391, Seattle, 1975. [p.3, Fig.43; p.31, Fig.45-49].
Female: 43, genital somite (ventral); 45, habitus (dorsal); 46, idem (left lateral side); 47, A1; 48, Mx1; 49, Mxp.

Species Spinocalanus antarcticus - Plate 4 of morphological figures

Plate 4 issued from : D.M. Damkaer in NOAA Technical Report NMFS CIRC-391, Seattle, 1975. [p.30, Fig.44; p.32, Fig.50-56; p.63, Fig.151].
Female: 44, A2; 50, Md; 51, masticatory edge of Md; 52, Mx2; 53, P1; 54, P2; 55, P3; 56, P4; 151, terminal segments of A1.

Species Spinocalanus antarcticus - Plate 5 of morphological figures

Plate 5 issued from : D.M. Damkaer in NOAA Technical Report NMFS CIRC-391, Seattle, 1975. [p.34, Fig.57-67].
Male: 57, habitus (dorsal); 58, idem (left lateral side); 59A1; 60, masticatory edge of Md; 61, gnathobase of Mx1 (reduced, 6 outer blunt processes + 3 proximal moderately sharp nude setae); 62, Mxp; 63, P1; 64, P2; 65, P3; 66, P4; 67, P5.

Species Spinocalanus antarcticus - Plate 6 of morphological figures

Plate 6 issued from : R.N. Wolfenden in Die Marinen Copepoden der Deutschen Südpolar-Expedition 1901-1903, 1911. [218, Fig.9].
Female: a-b, habitus (dorsal and lateral, respectively).

Species Spinocalanus antarcticus - Plate 7 of morphological figures

Plate 7 issued from : R.N. Wolfenden in Plankton Studies Part II. Copepoda. 1906 [Pl.XIV, 6-7, 8-9].
Female: 8-9, habitus (lateral and dorsal, respectively).

Male: 6, habitus (lateral); 7, P5.

Species Spinocalanus antarcticus - Plate 8 of morphological figures

Plate 8 Issued from : J.M. Bradford in N.Z. Oceanogr. Inst., 1971, 206, Part 8, No 59. [p.17, Figs.28, 29]. As Spinocalanus magnus.
Female (from 75°09'S, 171°00'W): 28, P1; 29, P4.

Nota: 3rd exopodal segment of P1 with a patch of small spinules on the posterior surface.

Complementary References

List of the studied authors

Shih & Laubitz, 1978 (p.49); Buchanan & Sekerak, 1982 (p.41, Table 2: vertical distribution); Kosobokova, 1989 (p.26); Sirenko & al., 1996 (p.349); Kosobokova & al., 1998 (tab.2); Razouls & al., 2000 (p.343, tab. 4, 5, Appendix); Kosobokova & Hirche, 2000 (p.2029, tab.2); Kosobokova & al., 2002 (p.503, feeding, gut); Auel & Hagen, 2002 (p.1013, tab.2); Hopcroft & al., 2005 (p.198, table 2); Blachowiak-Samolyk & al., 2007 (p.2716, Table 2); Blachowiak-Samolyk & al., 2008 (p.2210, Table 3, biomass); Schnack-Schiel & al., 2008 (p.1046: Tab.2); Wishner & al., 2008 (p.163, Table 2, figs. 8, 12, zonation-oxycline, feeding: p.186); Park & Ferrari, 2009 (p.143, Table 4, 6: bipolar distribution, Appendix 1, biogeography); Kosobokova & Hopcroft, 2010 (p.96, Table 1, fig.7); Kosobokova & al., 2011 (p.29, Table 2, figs.4, 8, Rem.: Arctic Basins); Sano & al., 2013 (p.11, Table 6, Rem.: p.21, food habits) ; Smoot & Hopcroft, 2016 (p.1, fig.7, vertical distribution)

Distribution

NZ: 4

Distribution map of Spinocalanus antarcticus by geographical zones

Distribution map of Spinocalanus antarcticus for the Zone Indian Ocean

Distribution map of Spinocalanus antarcticus for the Zone Antarctic

Additional Maps & Charts

Species Spinocalanus antarcticus - Distribution map 4

Map 4 Chart of 1996

Localisations

Geographical glossary

Antarct. (Weddell Sea, Indian: continent), Arct. (Fram Strait, Spitsbergen, Central Basin, E Beaufort Sea, Laptev Sea, Nansen Basin, Amundsen Basin, Makarov Basin, Lomonosov Ridge, Canadian abyssal plain), Canada Basin, W Baffin Bay), SE Atlant. (25°S), Arabian Sea

Quotations

N: 23

Dimensions (mm)

References of the authors concerning dimensions

(13) F: 3-2,25; M: 2,32-1,66; (102) F: 2,6-2,35; (131) F: 3,15-2,25; M: 2,32-1,66; (239) F: 2,3-2,25; (377) F: 3-2,03; (1252) F: 2,55-2,83; {F: 2,03-3,15; M: 1,66-2,32}.
(1252) F: Pr/Ur = 3,4-3,9.

Remarks

Mesopelagic.
Sampling depth (Antarct): 1200 m. 2000-3000 m (in Bode & al., 2017 at 25°S)
Typical bipolar species, but taken in the north Arabian Sea in the upwelling from the depth water current originates from Antarctic.
For Vervoort (1957, p.42) the male specimen attibued by Wolfenden (1906, p.43, Pl.14, figs. 6, 7; 1911, p.218) to S. antarcticus, certainly does not represent a male of the genus Spinocalanus (probably it belongs to the genus Xanthocalanus).
According to Wishner & al. (2008, p.163) this copepod, common in the lower oxycline, fed primarily on compenents of the vertical particulate flux and suspended material.
For Bode & al. (2017, p.610), S. antarcticus and S. magnus could only be separated based on their body shape [Criterion debatable. CR.]

Last update : 26/11/2020

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