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Title

Diel food intake and digestive enzyme production patterns in Solea senegalensis larvae

AuthorsNavarro-Guillén, Carmen; Moyano, Francisco Javier; Yúfera, Manuel
KeywordsDaily ingestion pattern
Solea senegalensis
Larval ontogeny
Digestive enzyme activities
Issue Date1-Jan-2015
PublisherElsevier
CitationAquaculture 435: 33-42 (2015)
AbstractThe aim of this study was to examine patterns of food intake and production of the main digestive enzymes of Senegalese sole larvae under a fixed 12 h light:12 h dark cycle. Daily gut content, soluble protein content and digestive enzyme activities were studied at different times of day in pelagic sole larvae (onset of feeding and 6 days post-hatch; dph) and in benthonic sole post-larvae (20 and 30 dph). The larvae displayed temporal changes in food intake throughout development. Pre-metamorphic larvae ceased feeding after lights were turned off. In contrast, post-metamorphic larvae continued to feed during the day, with a higher food intake occurring during dark phase. It was demonstrated that larval digestive enzymes, mainly lipases, were active before mouth opening. Tryptic activity varied with food intake at pre-metamorphic larvae, whereas its activity levels were kept along the day in post-metamorphic larvae.
Publisher version (URL)https://doi.org/10.1016/j.aquaculture.2014.09.017
URIhttp://hdl.handle.net/10261/168514
DOI10.1016/j.aquaculture.2014.09.017
ISSN0044-8486
Appears in Collections:(ICMAN) Artículos
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