Aegisthus aculeatus - Species Card - Marine Planktonic Copepods

Aegisthus aculeatus Giesbrecht, 1891 (F,M)

Taxonomy

Order Harpacticoida

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Superfamily Cervinioidea

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Family Aegisthidae

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Genus Aegisthus

details list species for this Genus

Abbreviations or symbols

Synonymy

? Aegisthus spinulosus (? juv.) Farran, 1905 (p.46, Descr.F, figs.F)

References

List of the studied authors

Giesbrecht, 1892 (p.573, 577, 770, Descr.F, figs.F); A. Scott, 1909 (p.233, Rem.); Farran, 1926 (p.301); Rose, 1933 a (p.293, figs.F); Sewell, 1947 (p.292); Lysholm & al., 1945 (p.45); Sewell, 1947 (p.292); Lang, 1948 a (p.177, figs.F, Rem.F,M); Marques, 1958 a (p.140, figs.M, Rem.); Owre & Foyo, 1967 (p.103, Rem. M, figs.F,M); Wells, 1970 (n°133, p.4, figs.); Boxshall, 1979 (p.204, figs.F,M, Rem. M), Vives, 1982 (p.295); Bradford-Grieve & al., 1999 (p.887, 968, figs.F,M); Conroy-Dalton & Huys, 1999 (p.429, Rem.); Boxshall & Halsey, 2004 (p.229: fig.F); Vives & Shmeleva, 2010 (p.88, figs.F,M, Rem.)

Figures

Plate 1 issued from : G.A. Boxshall in Bull. Br. Mus. nat. Hist. (Zool.), 1979, 35 (3). [p.205, Fig.1, H-O].
Female (from 18°N, 25°W): H, habitus (dorsal); I, A2; J, Mxp; K, P1; L, P5; M, P6.

Male: N, habitus (dorsal); O, P5.

Scales 0.1 mm unless otherwise indicated.

Species Aegisthus aculeatus - Plate 2 of morphological figures

Plate 2 issued from : H.B. Owre & M. Foyo in Copepods of the Florida Current. Fauna Caribaea, 1967, 1, Crustacea, Part 1: Copepoda. [p.104, Figs.750-751].
Male: 750, P5; 751, P6.

Nota: The male resembles the female in general characteristics (shape of body, rostrum, length of caudal setae). P5 is 2-segmented; the 1st segment is incompletely separated from basipod 2 and there is a long seta on the outer margin which probably actually is a structure of the basipod; a stout serrated spine emerges from the outer distal corner of the 1st segment, the 2nd segment bears 4 serrated spines (2 on the outer margin and 2 terminal, of inequal length) and 2 internal setae.

Species Aegisthus aculeatus - Plate 3 of morphological figures

Plate 3 Issued from : W. Giesbrecht in Systematik und Faunistik der Pelagischen Copepoden des Golfes von Neapel und der angrenzenden Meeres-Abschnitte. – Fauna Flora Golf. Neapel, 1892, 19 , Atlas von 54 Tafeln. [Taf.46, Fig.44].
Female: 44, habitus (lateral).

Species Aegisthus aculeatus - Plate 4 of morphological figures

Plate 4 Issued from : W. Giesbrecht in Systematik und Faunistik der Pelagischen Copepoden des Golfes von Neapel und der angrenzenden Meeres-Abschnitte. – Fauna Flora Golf. Neapel, 1892, 19 , Atlas von 54 Tafeln. [Taf.46, Figs.45, 50];
Female: 45, habitus (dorsal); 50, thoracic segment 5 with P5, and abdominal segments 1 and 2 (ventral).

Species Aegisthus aculeatus - Plate 5 of morphological figures

Plate 5 issued from : H.B. Owre & M. Foyo in Copepods of the Florida Current. Fauna Caribaea, 1967, 1, Crustacea, Part 1: Copepoda. [p.103, Fig.748].
Male: 748, forehead (dorsal)

Plate 6 issued from : H.B. Owre & M. Foyo in Copepods of the Florida Current. Fauna Caribaea, 1967, 1, Crustacea, Part 1: Copepoda. [p.103, Fig.749].
Male: 749, A1.

Species Aegisthus aculeatus - Plate 7 of morphological figures

Plate 7 Issued from : W. Giesbrecht in Systematik und Faunistik der Pelagischen Copepoden des Golfes von Neapel und der angrenzenden Meeres-Abschnitte. – Fauna Flora Golf. Neapel, 1892, 19 , Atlas von 54 Tafeln. [Taf.49, Figs.1, 8].
Female: 1, A2; 8, A1 (dorsal view).

Species Aegisthus aculeatus - Plate 8 of morphological figures

Plate 8 Issued from : W. Giesbrecht in Systematik und Faunistik der Pelagischen Copepoden des Golfes von Neapel und der angrenzenden Meeres-Abschnitte. – Fauna Flora Golf. Neapel, 1892, 19 , Atlas von 54 Tafeln. [Taf.49, Figs.4, 5, 7].
Female: 4, Mxp; 5, distal part of caudal ramus (vrntral view); 7, Mx2.

Species Aegisthus aculeatus - Plate 9 of morphological figures

Plate 9 Issued from : W. Giesbrecht in Systematik und Faunistik der Pelagischen Copepoden des Golfes von Neapel und der angrenzenden Meeres-Abschnitte. – Fauna Flora Golf. Neapel, 1892, 19 , Atlas von 54 Tafeln. [Taf.49, Fig.11];
Female: 11, P1 (anterior view).

Species Aegisthus aculeatus - Plate 10 of morphological figures

Plate 10 Issued from : W. Giesbrecht in Systematik und Faunistik der Pelagischen Copepoden des Golfes von Neapel und der angrenzenden Meeres-Abschnitte. – Fauna Flora Golf. Neapel, 1892, 19 , Atlas von 54 Tafeln. [Taf.49, Fig.9];
Female: 9, Mx1 (posterior view).

Complementary References

List of the studied authors

Cleve, 1904 a (p.185); Sewell, 1948 (p.394); Grice, 1963 a (p.496); Furuhashi, 1966 a (p.295, vertical distribution in Oyashio/Kuroshio transitional area, Table 8, 9); .Björnberg, 1973 (p.371, 384); Deevey & Brooks, 1977 (p.256, tab.2, Station "S"); Vives, 1982 (p.295); Greze & al., 1985 (p.8); Shih & Young, 1995 (p.75); Böttger-Schnack, 1996 (p.1088); Baker & al., 2005 (tabl.); Morales-Ramirez & Suarez-Morales, 2008 (p.515); Hidalgo & al., 2010 (p.2089, Table 2); Medellin-Mora & Navas S., 2010 (p.265, Tab. 2); Zaafa & al., 2014 (p.67, Table I, occurrence); El Arraj & al., 2017 (p.272, table 2, spatial distribution);

Distribution

NZ: 13

Distribution map of Aegisthus aculeatus by geographical zones

Distribution map of Aegisthus aculeatus for the Zone Mediterranean Sea, Black Sea

Distribution map of Aegisthus aculeatus for the Zone Indian Ocean

Distribution map of Aegisthus aculeatus for the Zone China Seas, Vietnam

Localisations

Geographical glossary

South Africa (E), Angola, off Cape Verde Is. , off Mauritania, Canary Is., Moroccan coast, Brazil, Caribbean, Caribbean Sea, Caribbean Colombia, E Costa Rica, Sargasso Sea, off Bermuda (Station "S"), W Ireland, G. of Biscay, off W Tangier, Medit. (Alboran Sea), Arabian Sea, Arabian Gulf, Laccadive Is., Madagascar, Indonesia-Malaysia, China Seas (South China Sea), Japan, off SW Galapagos, Chile (N-S)

Quotations

N: 30

Dimensions (mm)

References of the authors concerning dimensions

(38) M: 1,28; (46) F: 1,85; (138) F: 1,85-1,64; M: 1,35-1,28; (618) M: 1,36-1,06; {F: 1,64-1,85; M: 1,06-1,36}

Remarks

meso-bathypelagic. Sargasso Sea: 500-2000 m (Deevey & Brooks, 1977, Station "S"). 660-900 m at Station S 2 in S Bösö (E middle Japan); 603-1236 at Station T-1 (E Tori Is., E middle Japan) from Furuhashi (1966 a).
According to Lang (1948 a) A. spinulosus would be a juvenile form of A. aculeatus.

Identification characters:
Female: Rostrum ending in short pointed. Anterior prosome with chitinuous net.
Male: Front rounded with rostrum. A1 7-segmented, the three distal segments short. Prosome without chitinuous net.

Last update : 25/10/2022

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