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Title

Optimal prey size for early turbot larvae (Scophthalmus maximus L.) based on mouth and ingested prey size

AuthorsCunha, Isabel; Planas, Miguel
KeywordsScophthalmus maximus
Turbot
Prey size
Mouth size
Larval feeding
Fish larvae
Issue Date1999
PublisherElsevier
CitationAquaculture 175(1-2): 103-110 (1999)
AbstractMouth size and gut contents were examined in turbot Scophthalmus maximus L..larvae from first exogenous feeding to day 10. The larvae were fed on three organisms two Brachionus species and Artemia nauplii. differing in size. A logarithmic relationship was found between mouth size width and height.and standard length SL. of larvae, and a linear relationship between prey size and SL of larvae. Considering the mean size of prey found in the guts of larvae fed on a range of prey sizes, the optimal prey size was determined over the study period. The optimal prey width corresponded to 36"1% of the mouth height MH.. The relationship between optimal prey size and mouth width MW.was more variable 40"4%.. Therefore, the former relationship was found to be more adequate in determining optimal prey size. The optimal prey width for first feeding larvae day 2 posthatching.was found to be 144 mm, increasing to 225 mm at day 10. The relationships were described by mathematical equations that can be useful to optimise both ingestion and growth rates under rearing conditions.
Description8 páginas, 3 figuras, 2 tablas
Publisher version (URL)http://dx.doi.org/10.1016/S0044-8486(99)00040-X
URIhttp://hdl.handle.net/10261/57268
DOI10.1016/S0044-8486(99)00040-X
ISSN0044-8486
Appears in Collections:(IIM) Artículos
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