Effects of illumination on early life development and digestive enzyme activities in common pandora Pagellus erythrinus L. larvae

Suzer, Cüneyt; Saka, Şahin; Fırat, Kürşat

doi:10.1016/j.aquaculture.2006.06.025

Cited by 34 publications

(18 citation statements)

References 25 publications

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“…According to the present results, light intensity had no significant effect on trypsin and pancreatic lipase activity. The results agreed with the study by Suzer et al (2006). They reported that light intensity (10 * 100 lx) had no significant effects on the activity of pepsin, amylase, and lipase in common pandora Pagellus erythrinus larvae, but Cuvier-Péres et al (2001) found that trypsin activity in sea bass larvae was significantly lower in 5 lx than that in 50-450 lx.…”

Section: Enzyme Activitysupporting

confidence: 82%

Effects of light intensity on molting, growth, precocity, digestive enzyme activity, and chemical composition of juvenile Chinese mitten crab Eriocheir sinensis

Liu

et al. 2011

Aquacult Int

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A 74-day growth trial was carried out to investigate the effects of light intensity on the juvenile Chinese mitten crab, Eriocheir sinensis, under semi-natural conditions. The experiment had three light intensity treatment groups, natural light (NL), middle light (ML), and low light (LL), as light intensity became weaker. The results indicated that light intensity had no significant effect on molting interval and molting frequency but did have a significant effect on the molting weight gain of the crab. Molting weight gain in group NL was significantly higher than that in group LL (P \ 0.05). Specific growth rate in weight (SGRw) and in carapace width (SGRcw), weight gain, and final body weight were significantly affected by light intensity (P \ 0.05). No significant difference was detected in survival between groups (P [ 0.05). The precocious rate in groups NL, ML, and LL was 26.14, 15.48, and 17.14%, respectively. The precocious rate in group NL was significantly higher than that in groups ML and LL (P \ 0.05). Chemical composition of the crab body was significantly affected by light intensity, but the activity of alkaline phosphatase, trypsin, and pancreatic lipase was not significantly affected by light intensity. The results indicated that the submitted light intensity was useful in reducing the precocious rate without affecting the normal growth of juvenile E. sinensis.

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Section: Enzyme Activitysupporting

confidence: 82%

Effects of light intensity on molting, growth, precocity, digestive enzyme activity, and chemical composition of juvenile Chinese mitten crab Eriocheir sinensis

Liu

et al. 2011

Aquacult Int

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“…In common pandora, peptic activity began to rise between 20 and 24 days post hatch (Suzer et al . ; compare Fig. ).…”

Section: Digestive Physiologymentioning

confidence: 65%

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

Rønnestad

Yúfera

Ueberschär

et al. 2013

Reviews in Aquaculture

374

327

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Food 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.

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“…() reported that significantly lower trypsin specific activity was found in European sea bass ( D. labrax ) post larvae in the 5‐lx treatment than the 50, 100 and 450‐lx treatments. However, Suzer, Saka and Fırat () found that differential light intensities (10–100 lx) had no significant effects on the activity of either pepsin, amylase or lipase. In this study, the activities of total protease, amylase and lipase increased with an SGR increase and an FCR decrease, suggesting that digestive processes in intestine, liver and stomach were affected by an increase in light intensity.…”

Section: Discussionmentioning

confidence: 99%

Effects of light intensity on husbandry parameters, digestive enzymes and whole-body composition of juvenileEpinephelus coioidesreared in artificial sea water

et al. 2013

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To provide a specific lighting system to aquaculture, a completely randomized design with five light treatments with three replicates was used to investigate effects of light intensity on juvenile Epinephelus coioides reared in artificial sea water. The weight gain rate (WG, %), specific growth rate (SGR % day−1), protein efficiency ratio (PER) and survival rate (S, %) were significantly higher at the 320–1150‐lx treatments (P ≤ 0.05) compared with the other treatments, but the highest food conversion ratio (FCR) was at the 0‐lx treatment and the lowest at 600–1150 lx. Total protease, amylase and lipase activities in liver, stomach and intestine were significantly higher at 320–1150‐lx conditions and significantly lower at 0 lx (P ≤ 0.05) than in the other treatments. The highest contents of crude protein and crude lipid were observed at 600–1150 lx and 320–550 lx respectively. However, both moisture and ash were highest at 0 lx and lowest at 600–1150 lx. The results indicated that light intensity could significantly affect husbandry parameters, digestive enzymes and whole‐body composition of juvenile E. coioides, with optimal light intensity being at 600–1150 lx.

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Effects of illumination on early life development and digestive enzyme activities in common pandora Pagellus erythrinus L. larvae

Cited by 34 publications

References 25 publications

Effects of light intensity on molting, growth, precocity, digestive enzyme activity, and chemical composition of juvenile Chinese mitten crab Eriocheir sinensis

Effects of light intensity on molting, growth, precocity, digestive enzyme activity, and chemical composition of juvenile Chinese mitten crab Eriocheir sinensis

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

Effects of light intensity on husbandry parameters, digestive enzymes and whole-body composition of juvenileEpinephelus coioidesreared in artificial sea water

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