Influence of food restriction on the reproduction and larval performance of matrinxã, Brycon amazonicus (Spix and Agassiz, 1829)

Camargo, Acs.; Urbinati, Elisabeth Criscuolo

doi:10.1590/s1519-69842008000400024

Cited by 9 publications

(11 citation statements)

References 19 publications

(39 reference statements)

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“…Phenotypic convergence in offspring that differ in initial size due to maternal effects has been attributed to compensatory growth in various taxa (e.g. Wilson & Réale 2006; Reitzel & Heyland 2007; Camargo & Urbinati 2008). Although minor in comparison with food ratio, we found a strikingly long lasting effect of egg size on fish length and body mass (12 weeks).…”

Section: Discussionmentioning

confidence: 99%

“…Often the mechanism behind an observed fitness effect of egg size is not identified, which is possibly due to the fact that individuals are usually not individually tracked from the egg stage (e.g. Camargo & Urbinati 2008; Donelson, Munday & McCormick 2009; Dziminski, Vercoe & Roberts 2009), so that the initial egg size is unknown. Therefore, more information on the consequences of egg size for the phenotype of individual offspring and on the persistence of the effects of egg size is required.…”

Section: Introductionmentioning

confidence: 99%

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Egg size and food abundance interactively affect juvenile growth and behaviour

Segers

Taborsky

2010

Functional Ecology

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Summary 1.Comparative evidence from several animal taxa suggests that juveniles hatching from larger eggs have fitness benefits when growing up in a harsh environment, whereas under benign conditions egg size should be of less importance. However, the physiological and behavioural mechanisms responsible for these context-dependent fitness differences are as yet poorly understood. 2. We studied the interactions between the phenotype of developing offspring and their environment in the mouthbrooding cichlid Simochromis pleurospilus. We hand-raised young from large and small eggs, and measured their initial body size and burst swimming speed. Thereafter we raised half of each egg-size class on high and half on low food ration and followed their growth trajectories and behavioural development until the age of 12 weeks. 3. We found that larger eggs gave rise to larger young that had a higher burst swimming speed. Food ration greatly influenced long-term growth, while egg size predominantly affected fish size during the first 2 weeks of life. However, large egg size caused a size advantage of juveniles persisting throughout the experimental period. 4. Egg size and food ration interactively affected the hiding and foraging behaviour of young. In the low-food treatment, individuals from small eggs spent less time in shelter and showed a higher commitment to foraging than individuals from large eggs. In a natural setting, this should markedly increase predation risk of young originating from small eggs, particularly in poor environments. In contrast, when food was plentiful juveniles behaved similarly, irrespective of egg size. 5. Our results show that egg size affects juvenile growth trajectories and behaviour differently in different environments. While it is well-established that a large egg size raises offspring fitness particularly in harsh environments, our study suggests that this advantage arises through riskaverse behaviour being tightly linked to offspring size.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Egg size and food abundance interactively affect juvenile growth and behaviour

Segers

Taborsky

2010

Functional Ecology

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“…After feeding Dicentrachus labrax for 6 months with half of the normal feed ration, spawners growth rates were lower, and egg and larval sizes were smaller than those noted in fish fed the full ration (Cerdá, Carrillo, Zanuy & Ramos ). The restrictive feeding of Brycon amazonicus (Spix & Agassiz) resulted in smaller egg size and fewer ovulating females (Camargo & Urbinati ). On the other hand, restrictive feeding of Tilapia zillii Gervais and rainbow trout Oncorhynchus mykiss (Walbaum) (Ridelman, Hardy & Brannon ; Coward & Bromage ) has not reduced the GSI.…”

Section: Discussionmentioning

confidence: 99%

Impact of feed ration on growth and the results of sterlet,Acipenser ruthenusL., artificial reproduction

2013

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In the study the effects of artificial reproduction of sterlet (Acipenser ruthenus) fed different feed ration were compared. Three doses of feed were used: 1.0%, 0.75% and 0.5% of the fish biomass per day. The results indicate that the feed rations for fish used for caviar production or breeding material should differ. The optimal ration for the quality of sex products and progeny was 0.75% of the fish biomass, whereas in view of the number of maturing fish, the better ration was that of 1% of the fish biomass. In group fed 0.75% of the fish biomass per day the highest GSI value, the largest eggs and hatch and the highest survival to the hatch were noted. The feed ration of 0.5% of the fish biomass was too low, as indicated by the low parameters of eggs obtained, their survival and the smallest number of mature and ovulating females. These results can provide direction for the creation and exploitation of spawner stocks as well as for other sturgeon species cultured under controlled conditions.

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“…However, in the present study, we have demonstrated that protein mobilization is the primary energy source in food-deprived adult R. quelen. This is an unusual pattern, and represents a significant finding, since fish may experience limited food availability and a reduction in food intake, both in natura and in aquaculture, e.g., during pre-harvest fasting, shipping management, and feeding regimes that restrict food availability (Mackenzie et al, 1998;Souza et al, 2003;Camargo and Urbinati, 2008). Like all animals, fish need protein, fat, carbohydrates, vitamins, minerals, and other dietary elements to satisfy their physiological needs for growth and reproduction (Hertrampf and Piedad-Pascual, 2000).…”

Section: Fasting 0dmentioning

confidence: 99%

“…quelen, as with other fish species, may experience periods of food deprivation or starvation-both in natura (due to limited food availability in winter and the reduction in food intake associated with life-cycle phenomena, e.g., spawning migration) and also in aquaculture (due to pre-harvest fasting, as well as shipping management and feeding regimes, which restrict availability of food) (Mackenzie et al, 1998;Souza et al, 2003;Camargo and Urbinati, 2008). Natural or artificial fasting periods produce a number of hormonal and biochemical changes, including reduction in muscle glycogen and mobilization of fat and protein, which may impair fish meat quality (Sigholt et al, 1997;Thomas et al, 1999).…”

Section: Introductionmentioning

confidence: 99%

Protein and lipid metabolism adjustments in silver catfish (Rhamdia quelen) during different periods of fasting and refeeding

et al. 2017

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The fish may experience periods of food deprivation or starvation which produce metabolic changes. In this study, adult Rhamdia quelen males were subjected to fasting periods of 1, 7, 14, and 21 days and of refeeding 2, 4, 6, and 12 days. The results demonstrated that liver protein was depleted after 1 day of fasting, but recovered after 6 days of refeeding. After 14 days of fasting, mobilization in the lipids of the muscular tissue took place, and these reserves began to re-establish themselves after 4 days of refeeding. Plasmatic triglycerides increased after 1 day of fasting, and decreased following 2 days of refeeding. The glycerol in the plasma oscillated constantly during the different periods of fasting and refeeding. Changes in the metabolism of both protein and lipids during these periods can be considered as survival strategies used by R. quelen. The difference in the metabolic profile of the tissues, the influence of the period of fasting, and the type of reserves mobilized were all in evidence.Keywords: fasting, lipids, protein, refeeding, silver catfish. Ajustes no metabolismo de proteínas e lipídios no jundiá (Rhamdia quelen) durante diferentes períodos de jejum e realimentação ResumoOs peixes podem sofrer períodos de privação de alimentos ou de fome, que produzem mudanças metabólicas. Neste estudo, jundiás machos adultos foram submetidos a jejum períodos de 1, 7, 14 e 21 dias e realimentação 2, 4, 6, e 12 dias. Os resultados demonstraram que a proteína do fígado foi esgotada depois de um dia de jejum, mas restabeleceu após 6 dias de realimentação. Após 14 dias de jejum, ocorreu a mobilização dos lípidos no tecido muscular sendo que estas reservas começaram a re-estabelecer-se após 4 dias de realimentação. Os triglicérides plasmáticos aumentam após um dia de jejum, e diminuiram após 2 dias de realimentação. O glicerol no plasma oscilou constantemente durante os diferentes períodos de jejum e realimentação. As alterações no metabolismo de proteína e lipídios durante estes períodos podem ser consideradas uma estratégias de sobrevivência utilizada pelo Rhamdia quelen. Sendo que a diferença no perfil metabólico tecidual bem como a influência do período de jejum e o tipo de reserva a ser mobilizada foram observadas neste estudo.

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Influence of food restriction on the reproduction and larval performance of matrinxã, Brycon amazonicus (Spix and Agassiz, 1829)

Cited by 9 publications

References 19 publications

Egg size and food abundance interactively affect juvenile growth and behaviour

Egg size and food abundance interactively affect juvenile growth and behaviour

Impact of feed ration on growth and the results of sterlet,Acipenser ruthenusL., artificial reproduction

Protein and lipid metabolism adjustments in silver catfish (Rhamdia quelen) during different periods of fasting and refeeding

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