Английская Википедия:Glaucus marginatus
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Glaucus marginatus is a species of small, floating, blue sea slug; a pelagic (open-ocean) aeolid nudibranch; a marine opisthobranch gastropod mollusc in the family Glaucidae.[1][2] This species is closely related to Glaucus atlanticus, and is part of a species complex (Informal clade Marginatus) along with Glaucus bennettae, Glaucus thompsoni, and Glaucus mcfarlanei.[3] Like Glaucus atlanticus, it is commonly known as a blue dragon.[4]
Description
This nudibranch is dark blue, and in many ways it resembles a smaller version of Glaucus atlanticus. However, in this species the cerata are arranged in a single row in each arch.Шаблон:Citation needed
While G. atlanticus is up to Шаблон:Convert long, G. marginate is only about Шаблон:Convert long, and its tail is shorter than its cousin. The species has a light and dark blue foot.[4]
Distribution
This species is pelagic, and can be found in the Pacific Ocean.Шаблон:Citation needed
While they do not usually inhabit coastal regions, hundreds of the creatures were observed washing up on one of the Sydney North Shore beaches, near Long Reef, in February 2021.[4]
Habitat and behaviour
These small nudibranches float upside down on the surface tension in temperate and tropical seas. They eat colonial cnidarians such as the Portuguese man o' war[2] (a.k.a. bluebottle, or Physalia utriculus), blue buttons (Porpita porpita), and the by-the-wind sailor (Velella velella).[4]
References
Шаблон:Commons category Шаблон:Wikispecies Шаблон:Reflist
Sources
- Bergh, L.S.R. (1860). Om Forekomsten af Neldefiim hos Mollusker. Vidensk. Meddel. Naturh. Foren. Kjöbenhavn, p. 309-331, pl. 8.
- Burn R. (2006) A checklist and bibliography of the Opisthobranchia (Mollusca: Gastropoda) of Victoria and the Bass Strait area, south-eastern Australia. Museum Victoria Science Reports 10:1–42.
- Australian Museum Online sections - sea slug forums
- ↑ Шаблон:WoRMS
- ↑ 2,0 2,1 Valdés A. & Campillo O.A. (2004) Systematics of pelagic aeolid nudibranchs of the family Glaucidae (Mollusca, Gastropoda). Bulletin of Marine Science 75(3): 381–389.[1]
- ↑ Churchill C.K.C, Valdés A. & Ó Foighil D. (2014) Molecular and morphological systematics of neustonic nudibranchs (Mollusca : Gastropoda : Glaucidae : Glaucus), with descriptions of three new cryptic species. Invertebrate Systematics 28(2): 174-195.[2]
- ↑ 4,0 4,1 4,2 4,3 Шаблон:Cite web
