The onset of exogenous feeding in marine fish larvae

Yúfera, Manuel; Darias, María J.

doi:10.1016/j.aquaculture.2007.04.050

Cited by 252 publications

(201 citation statements)

References 110 publications

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“…The survival and growth in this phase depends on, among other factors, the degree of development of some organs and on structures necessary for feeding, such as mouth, digestive tract (Makrakis et al, 2005(Makrakis et al, , 2008, swimming ability, which is related to the success in food search, visual acuity (Yúfera, Darias, 2007;Makrakis et al, 2008), and food availability (Sánchez-Velasco, 1998). Larvae that cannot overcome these limitations in time, become vulnerable to starvation and, consequently, to predation (Gisbert et al, 2004;Dou et al, 2005).…”

Section: Discussionmentioning

confidence: 99%

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Effects of delayed first feeding on growth of the silver catfish larvae Rhamdia voulezi (Siluriformes: Heptapteridae)

et al. 2017

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The effects of the timing of first feeding on the point-of-no-return (PNR) and growth of laboratory reared silver catfish Rhamdia voulezi larvae were studied. The experiment began immediately after the complete absorption of the yolk sac, 3 days after hatching (DAH). , and 9 th DAH. Zooplankton and newly-hatched Artemia spp. were used to feed the larvae. To evaluate the effect of food deprivation on growth, the standard length and weight of 594 larvae were assessed. Larval growth was significantly affected by the time of first exogenous feeding. The larvae fed from 3 rd to 5 th DAH showed a significantly higher development than those fed from 6 th DAH. The larvae reached the PNR on 6 th DAH. Survival and larval growth strongly depended on the timing of initial feeding. In order to avoid potential mortality by starvation and obtain good growth, the silver catfish larvae R. voulezi must establish successful initial feeding within 5 days after hatching. Keywords

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Section: Discussionmentioning

confidence: 99%

“…Starvation is one of the major causes of mortality of fish larvae in natural environments, as well as in fish farming (Dou et al, 2002;Yúfera, Darias, 2007). This happens because during the early ontogenetic development, most fish show low swimming and feeding abilities (Houde, 1974;Dou et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

Effects of delayed first feeding on growth of the silver catfish larvae Rhamdia voulezi (Siluriformes: Heptapteridae)

et al. 2017

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“…The transition of fish larvae from endogenous to exogenous feeding is a critical process in aquaculture due to the high mortality rates observed (Yufera and Darias, 2007). Since, larval development is a very quickly and complex process (Gisbert et al, 2002), fish larvae prioritize some structures among your initial development, like head and tail (Osse et al, 1997).…”

Section: Introductionmentioning

confidence: 99%

Initial Feeding Behaviour, Eye Structure and Effect of Colours on Prey Capture Rates of Betta splendens Larvae

Nascimento¹,

Valentin²,

Pereira-Santos³

et al. 2015

J. of Fisheries and Aquatic Science

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Basic studies on early morphology and behaviour are necessary to support applied research on larval rearing. Thus, the aim of this study was to analyze the initial feeding behaviour, eye structure and the influence of different background colours (red, blue and clear) on prey capture rates (Artemia sp.) of Betta splendens larvae. The retina was formed by 90 h post-fertilization and consisted of seven layers. The feeding behaviour of the larvae changed with ocular development and thus, prey were captured more efficiently with time. No significant difference (p>0.05) was observed between the different background colours on prey capture rates under the experimental conditions tested (10 min of exposure). In conclusion, B. splendens larvae displayed a typical feeding behaviour, which changed with larval development and was dependent on visual ontogeny. Even though the different background colours did not significantly affect feeding behaviour, our findings provide important insights for future studies on this field.

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“…swim bladder inflation, introduction of exogenous feeding, replacement of live food with artificial feed (weaning), cannibalism, temperature, light (intensity, quality and photoperiod), type, amount and quality of food, number of reared individuals per water volume (stock density), salinity, concentration of ammonia etc. are studied (Marty et al, 1995;Yúfera and Darias, 2007;Trabelsi et al, 2011;Kestemont et al, 2003;Watanabe et al, 1995;Boeuf and Le Bail, 1999;Qin et al, 1997;Sahoo et al, 2004;Lein et al, 1997;Gomułka et al, 2011;Nowosad et al 2013). The impact of examined phenomena and factors on the efficiency of rearing is most often determined by evaluating their influence on survival rate and increases in body weight and length.…”

Section: Introductionmentioning

confidence: 99%

Procedure for Harmless Estimation of Fish Larvae Weight

Krejszeff

Żarski

Palińska‐Żarska

et al. 2013

Italian Journal of Animal Science

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The aim of this study was to evaluate a procedure of weighing live fish larvae and to determine its impact on the survival and growth rates based on the example of ide Leuciscus idus (L.). A 14-day rearing was conducted. Larvae were randomly divided into two groups -control (C) and experimental (E). During the experiment, 10% of larvae from the E group were sampled and weighed (with experimental method) daily. An integral part of weighing method was to place the anaesthetized larvae onto a nylon net platform. The platform with larvae was then dried on the blotting paper and next weighed together with larvae. The weight of the larvae was calculated by deducting the weight of the platform from the total weight recorded. After weighing, the fish were returned to the rearing tank. Fish from the control group were not manipulated during the whole experiment. At the end of the experiment 90 randomly chosen fish from each group were measured and weighted. No significant differences were recorded in larvae survival, weight and length (91.33±4.73%; 41.69±10.70 mg; 17.56±1.44 mm and 94.00±4.00%; 49.40±10.79 mg; 18.41±1.24 mm in E group and C group, respectively). Significant differences were recorded in case of SGR that reached 15.80±0.29 in C group and 14.60±0.17 in E group. The described method may be a useful tool for determining fish larvae weight. Although it requires conducting further researches in order to establish the influence of accompanying factors such as e.g. kind and concentration of anaesthetic.

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The onset of exogenous feeding in marine fish larvae

Cited by 252 publications

References 110 publications

Effects of delayed first feeding on growth of the silver catfish larvae Rhamdia voulezi (Siluriformes: Heptapteridae)

Effects of delayed first feeding on growth of the silver catfish larvae Rhamdia voulezi (Siluriformes: Heptapteridae)

Initial Feeding Behaviour, Eye Structure and Effect of Colours on Prey Capture Rates of Betta splendens Larvae

Procedure for Harmless Estimation of Fish Larvae Weight

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