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Title: Feeding and movement patterns of the sea cucumber Holothuria sanctori
Authors: Navarro, P. G.
García-Sanz, S.
Barrio, J. M.
Tuya, F. 
UNESCO Clasification: 240119 Zoología marina
Keywords: Sea cucumber
Nocturnal Movement
Organic Matter Distribution
Issue Date: 2013
Publisher: 0025-3162
Journal: Marine Biology 
Abstract: Sea cucumbers are conspicuous organisms inhabiting almost all marine habitats across the globe. Despite their importance as effective consumers of detritus, little is known about their behavior. We studied organic matter (OM) consumption and nocturnal movement patterns of Holothuria sanctori through indoors assays and in situ experiments at shallow bottoms off Gran Canaria Island (Canary Islands, Spain). H. sanctori has a selective feeding toward high OM concentration sediments. Consumption of OM increased with OM availability, particularly during formation of the gonads. OM consumption did not differ in situ between two adjacent habitats arranged in mosaics: macroalgal beds and urchin-grazed "barrens." Larger distances and fastest displacements were covered by H. sanctori during the end than the middle and start of the nighttime. Overall, we did not detect a clear "homing" behavior by H. sanctori, yet some individuals showed a fidelity for refuges when shelter availability was lacking.
ISSN: 0025-3162
DOI: 10.1007/s00227-013-2286-5
Source: Marine Biology [ISSN 0025-3162], v. 160, p. 2957-2966
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