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Título

Feeding behaviour and digestive physiology in larval fish: Current knowledge, and gaps and bottlenecks in research

Autor Rønnestad, Ivar; Yúfera, Manuel ; Ueberschär, Bernd; Ribeiro, Laura; Sæle, Øystein; Boglione, Clara
Palabras clave Digestion
Gut
Ingestion
Absorption
Fecha de publicación may-2013
EditorWiley-Blackwell
Citación Reviews in Aquaculture 5(S1): S59-S98 (2013)
ResumenFood uptake follows rules defined by feeding behaviour that determines the kind and quantity of food ingested by fish larvae as well as how live prey and food particles are detected, captured and ingested. Feeding success depends on the progressive development of anatomical characteristics and physiological functions and on the availability of suitable food items throughout larval development. The fish larval stages present eco-morpho-physiological features very different from adults and differ from one species to another. The organoleptic properties, dimensions, detectability, movements characteristics and buoyancy of food items are all crucial features that should be considered, but is often ignored, in feeding regimes. Ontogenetic changes in digestive function lead to limitations in the ability to process certain feedstuffs. There is still a lack of knowledge about the digestion and absorption of various nutrients and about the ontogeny of basic physiological mechanisms in fish larvae, including how they are affected by genetic, dietary and environmental factors. The neural and hormonal regulation of the digestive process and of appetite is critical for optimizing digestion. These processes are still poorly described in fish larvae and attempts to develop optimal feeding regimes are often still on a 'trial and error' basis. A holistic understanding of feeding ecology and digestive functions is important for designing diets for fish larvae and the adaptation of rearing conditions to meet requirements for the best presentation of prey and microdiets, and their optimal ingestion, digestion and absorption. More research that targets gaps in our knowledge should advance larval rearing. © 2013 Wiley Publishing Asia Pty Ltd.
URI http://hdl.handle.net/10261/102433
DOI10.1111/raq.12010
Identificadoresdoi: 10.1111/raq.12010
issn: 1753-5123
e-issn: 1753-5131
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