Feeding behaviour of deep-sea dwelling holothurians: Inferences from a laboratory investigation of shallow fjordic species

I R Hudson, B D Wigham, M Solan, R Rosenberg

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

An experimental mesocosm was used to investigate the feeding behaviour, particle size selectivity gut throughput time and dietary selection of two holothurian species, Stichopus tremulus (Gunnerus) and Mesothuria intestinalis (Ascanius). Specimens usually only present at depths >1000m in the North-eastern Atlantic Ocean were collected from a relatively shallow (<100 m) cold-water fjordic system in Sweden and maintained in the laboratory. Both species exhibited a similar strategy for retrieving sediment particles from the sediment surface; feeding tentacles were used in a 'grasping' motion to pick up sediment particles. The rate at which the feeding tentacles were placed onto the sediment surface, however, differed between species (S. tremulus was three times quicker than M. intestinalis) resulting in a significant difference in gut throughput time. Both species, when offered different sized sediment particles, showed a preference for finer sediment and for nutritionally rich, pigment-enhanced, food patches. (c) 2005 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)201-218
Number of pages18
JournalJournal of Marine Systems
Volume57
DOIs
Publication statusPublished - 2005

Keywords

  • holothurian
  • pigment
  • biomarker
  • deep sea
  • enrichment experiment
  • mesocosm
  • TIME-LAPSE PHOTOGRAPHY
  • ORGANIC-MATTER
  • SELECTIVITY
  • ATLANTIC
  • PHYTODETRITUS
  • SEDIMENTS
  • ECOLOGY
  • BIOLOGY
  • GUTS

Cite this

Feeding behaviour of deep-sea dwelling holothurians: Inferences from a laboratory investigation of shallow fjordic species. / Hudson, I R ; Wigham, B D ; Solan, M ; Rosenberg, R .

In: Journal of Marine Systems, Vol. 57, 2005, p. 201-218.

Research output: Contribution to journalArticle

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abstract = "An experimental mesocosm was used to investigate the feeding behaviour, particle size selectivity gut throughput time and dietary selection of two holothurian species, Stichopus tremulus (Gunnerus) and Mesothuria intestinalis (Ascanius). Specimens usually only present at depths >1000m in the North-eastern Atlantic Ocean were collected from a relatively shallow (<100 m) cold-water fjordic system in Sweden and maintained in the laboratory. Both species exhibited a similar strategy for retrieving sediment particles from the sediment surface; feeding tentacles were used in a 'grasping' motion to pick up sediment particles. The rate at which the feeding tentacles were placed onto the sediment surface, however, differed between species (S. tremulus was three times quicker than M. intestinalis) resulting in a significant difference in gut throughput time. Both species, when offered different sized sediment particles, showed a preference for finer sediment and for nutritionally rich, pigment-enhanced, food patches. (c) 2005 Elsevier B.V. All rights reserved.",
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AU - Wigham, B D

AU - Solan, M

AU - Rosenberg, R

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