Effect of starvation on the feeding ability of gilthead seabream (Spams aurata L.) larvae at first feeding

Yúfera, Manuel; Pascual, E.; Polo, A.; Sarasquete, Carmen

doi:10.1016/0022-0981(93)90196-u

Cited by 84 publications

(72 citation statements)

References 31 publications

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“…Starved larvae survived up to nine DAH, when a mass mortality was observed. Similar results were obtained by Yúfera et al (1993) employing Sparus aurata larvae reared at 19ºC and Dou et al (2002) employing Paralicthys olivaceus larvae reared at 17ºC. But as has been demonstrated in several studies, toleration to starvation and larval survival is strongly influenced by rearing temperature (McGurk, 1984, Dou et al, 2005.…”

Section: Discussionsupporting

confidence: 86%

“…This variable reflects muscular tissue stored energy, as the body width depends largely on the cumulative amount of muscle fibers. Yúfera et al (1993) demonstrated that starved S. aurata larvae obtain energy from the consumption of muscular tissue. After exhaustion of lipid reserves, stored as triacylglycerols, larvae begin to use stored fat reserves in muscle tissue and under extreme starvation might use their proteins.…”

Section: Discussionmentioning

confidence: 99%

“…The histological conditions were established based on criteria used by O'Connell (1976) for Engraulis mordax and Sieg (1998) for E. anchoita, since the tissular characteristics and alterations were similar to those described for other species (O'Connell, 1976;Sieg, 1998;Theilacker, 1978;Yúfera et al, 1993;McFadzen et al, 1997). Multiple sections were examined to assess the degree of alteration throughout the specimen and each selected tissue variable assigned to one of three grades.…”

Section: Methodsmentioning

confidence: 99%

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The use of morphological and histological features as nutritional condition indices of Pagrus pagrus larvae

et al. 2013

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Morphometrical and histological techniques were employed to characterize Pagrus pagrus larvae nutritional condition. Larvae were reared in laboratory under controlled conditions with the main objective of testing whether these methodologies allowed finding differences between larvae from different feeding treatments. Once yolk was consumed (three days after hatching) larvae were assigned to a feeding treatment: starved during the whole experiment; delayed feeding, starved during three days; fed during the entire experiment. Algae (Nannochloropsis oculata) and rotifers (Brachionus plicatilis) were provided to larvae for feed treatments. Larvae were fixed daily; for morphometrical purposes in 5% formaldehyde solution, and in Bouin for histological sections. Results herein obtained showed that both methodologies are sensitive enough to distinguish larvae characterized by different nutritional condition states obtained from the feeding treatments. Consequently, these methodologies could be employed in wild red porgy larvae in order to asses their nutritional condition. These techniques could also be employed to check larval quality obtained with aquaculture purposes to estimate the effects of changes in rearing protocols or kind of food supply and thus, to guaranty a higher survival of early developmental stages of reared larvae.Con el objeto de determinar si las técnicas morfométricas e histológicas permiten diferenciar larvas en estado de inanición de las sometidas a tratamientos de alimentación, ejemplares de Pagrus pagrus fueron criados en laboratorio bajo condiciones controladas. Una vez que el vitelo fue consumido (tres días luego de la eclosión) las larvas fueron sometidas a diferentes tratamientos de alimentación: completamente privadas de alimento, privadas de alimento durante tres días y luego alimentadas, y alimentadas durante todo el experimento. Algas (Nannochloropsis oculata) y rotíferos (Brachionus plicatilis) fueron proporcionados a las larvas de los tratamientos de alimentación. Diariamente se fijaron ejemplares de los tres tratamientos en formol 5% para estudios morfométricos y en Bouin para estudios histológicos. Los resultados obtenidos dan evidencias de que las metodologías presentadas son suficientemente sensibles para determinar diferencias en la condición de larvas sometidas a los tratamientos de alimentación. Por lo tanto, podrían ser empleadas para determinar la condición nutricional de las larvas de besugo recolectadas en el mar. Por otra parte, éstas metodologías podrían ser empleadas para determinar la calidad de larvas producidas en acuicultura y evaluar los efectos de modificaciones introducidas en los protocolos de crianza o en el tipo de alimento suministrado con el objeto de mejorar la supervivencia de los estadios tempranos de desarrollo.

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Section: Discussionsupporting

confidence: 86%

Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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The use of morphological and histological features as nutritional condition indices of Pagrus pagrus larvae

et al. 2013

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“…Overton et al (2010) estimated the window of opportunity for Baltic cod yolk-sac larvae in the laboratory to be 5.6 days at 10°C (56 Dd). At warmer temperatures (19°C), Yúfera et al (1993) estimated the window of opportunity to be only 2 days (38 Dd) for sea bream. It appears that mixotrophic larvae, those undergoing the transition from yolk to exogenous feeding, rapidly deplete energy reserves when they are food-deprived.…”

Section: Body Size and Life Stage Effect On Starvation Ratementioning

confidence: 99%

On the edge of death: Rates of decline and lower thresholds of biochemical condition in food-deprived fish larvae and juveniles

Meyer¹,

Caldarone

Chı́charo

et al. 2012

Journal of Marine Systems

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Gaining reliable estimates of how long fish early life stages can survive without feeding and how starvation rate and time until death are influenced by body size, temperature and species is critical to understanding processes controlling mortality in the sea. The present study is an across-species analysis of starvation-induced changes in biochemical condition in early life stages of nine marine and freshwater fishes. Data were compiled on changes in body size (dry weight, DW) and biochemical condition (standardized RNA-DNA ratio, sRD) throughout the course of starvation of yolk-sac and feeding larvae and juveniles in the laboratory. In all cases, the mean biochemical condition of groups decreased exponentially with starvation time, regardless of initial condition and endogenous yolk reserves. A starvation rate for individuals was estimated from discrete 75th percentiles of sampled populations versus time (degree-days, Dd). The 10th percentile of sRD successfully approximated the lowest, life-stage-specific biochemical condition (the edge of death). Temperature could explain 59% of the variability in time to death whereas DW had no effect. Species and life-stage-specific differences in starvation parameters suggest selective adaptation to food deprivation. Previously published, interspecific functions predicting the relationship between growth rate and sRD in feeding fish larvae do not apply to individuals experiencing prolonged food deprivation. Starvation rate, edge of death, and time to death are viable proxies for the physiological processes under food deprivation of individual fish pre-recruits in the laboratory and provide useful metrics for research on the role of starvation in the sea.

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“…Les résultats de l'expérience 6 montrent cependant que la survie jusqu'à la fin de la période d'alimentation mixte dépend davantage du sens de circulation de l'eau que des méthodes d'alimentation. Comme l'ont déjà démontré IGLESIAS et al (1994) chez le turbot ainsi que YUFERA et al (1993) chez Sparus aurata, le décalage de la première alimentation n'influence ni la survie ni la croissance des larves. De plus, ni pour la survie, ni pour la croissance, n'ont été observées d'interactions entre les conditions hydrodynamiques et les différentes techniques d'alimentation essayées.…”

Section: Discussionunclassified

Influence de l'hydrodynamique des bassins sur la survie et la croissance des larves de turbot (Psetta maxima)

Gaignon

Petton

Quéméner

1998

Bull. Fr. Pêche Piscic.

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RÉSUMÉUne forte variabilité des performances larvaires est observée chez le turbot. De nombreuses causes ont été étudiées, mais peu de travaux ont été publiés sur l'influence des conditions environnementales. Dans cet article, les effets des conditions hydrodynamiques des milieux d'élevage sur la survie et la croissance de larves nourries jusqu'aux jours 7-10 et de larves non alimentées ont été étudiés. Plusieurs expérimentations ont porté sur l'importance des débits d'eau (600 et 1200 ml.mn"^, constant et progressif), des débits d'air (10 et 30 ml.mn"^) et du sens de circulation de l'eau (descendant et ascendant, avec et sans changement de sens en cours d'élevage). De plus, les interactions possibles du sens de circulation de l'eau avec les conditions d'alimentation des larves ont été étudiées (i) en différant la première distribution alimentaire (à 4 moments différents entre 52 à 76 heures après le stade 95% d'éclos) et (ii) en utilisant deux rations alimentaires (différentes d'un facteur 3).Les résultats montrent que les débits d'eau et d'air influencent fortement la mortalité : une élévation de 25% du débit d'eau et un faible débit d'air ont des effets négatifs durant la période d'alimentation mixte (jours 3-4). Le sens de circulation de l'eau influence la mortalité durant toute la période d'élevage concernée. Un courant ascendant améliore la survie. Ces résultats ont été confortés lorsque des changements de sens de circulation de l'eau ont été pratiqués en cours d'élevage. Ils modifient quasi immédiatement (dans les 8-24 heures) l'évolution des mortalités observées : le passage d'un courant ascendant à un courant descendant entraîne de fortes mortalités et le changement inverse se traduit par une diminution, voire un arrêt de la mortalité. Les conditions d'alimentation testées n'influencent pas la survie larvaire ; elles n'interagissent pas non plus avec le sens de circulation de l'eau sur la survie.Par ailleurs, ni les facteurs influençant l'hydrodynamique dans les bassins, ni le décalage de la première alimentation n'ont d'effet sur la croissance larvaire. Seule l'augmentation de la quantité de proies distribuées permet une augmentation significative de la croissance.En conclusion, l'hydrodynamique dans les bassins a une forte influence sur les survies des larves. Ceci impose, d'un point de vue pratique, un contrôle précis des débits d'eau et d'air. La disponibilité en proies et leur accessibilité pour les larves ne semblent pas devoir être liées aux effets des facteurs hydrodynamiques. Mots-clés : turbot, techniques d'élevage, alimentation. HYDRODYNAMICS EFFECTS IN LARVAE REARING TANKS ON SURVIVAL AND GROWTH OF TURBOT (PSETTA MAXIMA). ABSTRACTDuring larval rearing phase of turbot, a substantial variability in survival and growth is frequently observed. In this paper, we studied the effects of hydrodynamics in larvae rearing tanks on the survival and the growth of fed and starved larvae, using the following conditions :Article available at http://www.kmae-journal.org or http://dx.doi.org/10.1051/kmae:1998...

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Effect of starvation on the feeding ability of gilthead seabream (Spams aurata L.) larvae at first feeding

Cited by 84 publications

References 31 publications

The use of morphological and histological features as nutritional condition indices of Pagrus pagrus larvae

The use of morphological and histological features as nutritional condition indices of Pagrus pagrus larvae

On the edge of death: Rates of decline and lower thresholds of biochemical condition in food-deprived fish larvae and juveniles

Influence de l'hydrodynamique des bassins sur la survie et la croissance des larves de turbot (Psetta maxima)

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