First record of the sea cucumber Trachythyone nina (Echinodermata: Holothuroidea) in Canadian waters, with a redescription of the species and notes on its distribution and biology
Mercier, A.; Pawson, D.L.; Pawson, D.J.; Hamel, J.-F. (2010). First record of the sea cucumber Trachythyone nina (Echinodermata: Holothuroidea) in Canadian waters, with a redescription of the species and notes on its distribution and biology. Mar. Biol. Res. 6(3): 315-320. https://dx.doi.org/10.1080/17451000903233805
In: Marine Biology Research. Taylor & Francis: Oslo; Basingstoke. ISSN 1745-1000; e-ISSN 1745-1019, more
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| Keywords |
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| Author keywords |
Deep sea; Dendrochirotida; Holothuroidea; Newfoundland and Labrador;Arctic |
| Authors | | Top |
- Mercier, A.
- Pawson, D.L.
- Pawson, D.J.
- Hamel, J.-F.
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| Abstract |
The original and only description of the cucumariid holothurian species Trachythyone nina (Deichmann, 1930) is based on material collected near George's Bank, by the US Fish Commission Steamer Albatross 125 years ago. No additional material of this species has been formally reported ever since. We hereby record T. nina for the first time in Canadian waters, from several sites along the continental slope of Newfoundland and Labrador (43-55 degrees N) at depths of 1088-1308 m and from the Arctic (60 degrees N) at 590 m, as well as from two sites near the type locality at 132-155 m along the coast of New England. A more detailed and accurate description of the species is provided, along with notes on its ecology and distribution. This tiny (<= 15 mm long) gonochoric sea cucumber is usually associated with hard substrata, including deep-sea corals. |
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