Onisimus sibiricus Brüggen, 1909

Berge, Jørgen, Vader, Wim & Johnsen, Jan Roger, 2007, Studies on the genus Onisimus Boeck, 1871 (Crustacea, Amphipoda, Uristidae) II. The barentsi and edwardsii groups, Zootaxa 1410, pp. 55-68 : 63-64

publication ID	https://doi.org/10.5281/zenodo.175595
DOI	https://doi.org/10.5281/zenodo.6249002
persistent identifier	https://treatment.plazi.org/id/03A08799-6443-FF9A-FF52-A44AF922FA88
treatment provided by	Plazi (2016-04-04 23:41:44, last updated 2024-11-27 09:47:44)
scientific name	Onisimus sibiricus Brüggen, 1909
status

Treatment

Onisimus sibiricus Brüggen, 1909 View in CoL

Figure 9 View FIGURE 9

Onisimus sibiricus Brüggen 1909: 8 View in CoL , Gurjanova 1951: 164.

Distribution and biology

This species was originally described from the Kara Sea ( Brüggen 1909), while Gurjanova (1951) added specimens from the Chukotsk Sea. Gurjanova’s map in Atlas Arktiki ( Gurjanova 1985) shows a few localities in the Laptev Sea, one in the westernmost East Siberian Sea, and one most unexpected dot in the Norwegian Sea south of Bear Island, but Bryazgin (1987) does not mention the species from his extensive Barents Sea collections, and Tzvetkova & Golikov (2001) only report O. sibiricus from the Kara, Laptev, East Siberian and Chukotsk Seas, not from the Barents Sea. Thus, the distribution area, as presently known, seems to stretch from the Kara Sea almost to the Bering Strait, with most records in quite shallow water. O. sibiricus has been collected from a wide array of bottom substrates ( Golikov & Tzvetkova 1994, data from Chaun Bay, East Siberian Sea). The biology of this species is otherwise completely unknown; it has never been collected from baited traps.

Remarks

Material of this species was examined in the collections of the Zoological Institute of St.Petersburg. Examination of this material did not reveal any differences between O. plautus and O. sibiricus . Brüggen, in his original description of the species in 1909, describes it as close to O. plautus , differing primary in size of coxa and in P2 propodus. However, as type material of the two species was not available for examination, the two species are herein treated as distinct taxa.

No further descriptions are given, except the illustration of habitus (see figure 9).

References

Bruggen, E. von der (1909) Beitrage zur Kenntnis der Amphipoden-Fauna der Russischen Arctis. Memoires de l'Academie Imperiale des Sciences de St. Petersbourg, Ser. 8, Physico-Mathematique Classe, 18 (16), 1 - 56.

Golikov, A. A. & Tzvetkova, N. L. (1994) (Amphipoda (Amphipoda, Gammaridea) of the Chaun bay of the East Siberian Sea. Pp 211 - 249 in O. A. Scarlato (ed.) (Ecosystems and the flora and fauna of the Chaun bay of the East Siberian Sea.) Russian Academy of Sciences, Zoological Institute. Explorations of the Fauna of the Seas 47, St. Petersburg. (In Russian)

Gurjanova, E. F. (1951). Bokoplavy morej SSSR i sopredel'nykh vod (Amphipoda-Gammaridea). Akademiia Nauk SSSR, Opredeliteli po Faune SSSR, 41, 1 - 1029.

Gurjanova, E. F. (1985) (Bottom Crustacea, species of endemic genera Onisimus (Amphipoda) and Katianira (Isopoda) and deep-sea endemic species of Eurycope (Isopoda) and Gnathia (Gnathiidea).). P. 130 in Atlas Arktiki, Moskva 1985, 204 pp. (in Russian)

Tzvetkova, N. L. & Golikov, A. A. (2001) Amphipoda-Gammaridea. Pp 79 - 94 in B. I. Sirenko (ed.). List of species of free-living invertebrates of Eurasian Arctic seas and adjacent deep waters. Russian Academy of Sciences, Zoological institute. Explorations of the Fauna of the Seas 51, St. Petersburg.