Effects of Broodstock Diet on Eggs and Larvae

Fernández‐Palacios, H.; Norberg, Birgitta; Izquierdo, Marisol; Hamre, Kristin

doi:10.1002/9780470959862.ch5

Cited by 53 publications

(97 citation statements)

References 176 publications

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“…; Fernández‐Palacios et al . ), which is of the utmost importance in a semelparous species. Selective accumulation of dietary ARA was observed in testis and ovary of octopus fed on the mixed diet, reflecting the high ARA content in crab in absolute terms, which underlined the importance of this fatty acid in the gonads of O. vulgaris .…”

Section: Discussionmentioning

confidence: 99%

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Effect of two fresh diets and sexual maturation on the proximate and fatty acid profile of several tissues inOctopus vulgaris: specific retention of arachidonic acid in the gonads

et al. 2014

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Most nutritional studies on Octopus vulgaris were based on males to avoid interaction with reproductive processes, focusing on muscle and digestive gland tissues. This study intends to evaluate the effect of two fresh diets, a fish diet (bogue Boops boops) and a mixed diet (600 g kg À1 crab Portunus pelagicus and 400 g kg À1 bogue), on the biochemical composition of muscle, digestive gland and gonad in males and females of O. vulgaris. Six octopuses per diet were selected (n = 3 per sex) after 60 days of rearing in floating cages. Weight increase was higher in males (3-3.2 kg) than in females (0.9 kg) regardless of diet associated with sexual maturation. Gondosomatic Index in females was 11.3-13.4%. High-lipid content in fish (440 g kg À1 dw) was reflected in digestive gland regardless of the diet, while muscle and testis showed a relatively stable composition. The increase in protein content in the ovary was related to sexual maturation. The low arachidonic content in bogue was reflected in all tissues, with no apparent negative effect on growth and welfare. However, specific retention of arachidonic in the gonads, related to high arachidonic content in crab, underlined the importance of this fatty acid in for gonad development in O. vulgaris.

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Section: Discussionmentioning

confidence: 99%

“…; Fernández‐Palacios et al . ). However, little is known regarding the effect of the diet on the biochemical composition of the gonad in O. vulgaris , or sex‐specific nutrient utilization associated with egg production in females.…”

Section: Introductionmentioning

confidence: 97%

Effect of two fresh diets and sexual maturation on the proximate and fatty acid profile of several tissues inOctopus vulgaris: specific retention of arachidonic acid in the gonads

et al. 2014

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“…Other studies have found that levels of essential fatty acids (EFA) affect gamete and larval quality (Fernández‐Palacios et al . ; Duncan et al . ), and a study on Senegalese sole wild males found that a formulated diet higher in DHA plus antioxidants significantly increased sperm quality, increasing both percentage of progressive spermatozoa and sperm velocity (Beirão et al .…”

Section: Broodstock Managementmentioning

confidence: 99%

New developments and biological insights into the farming of Solea senegalensis reinforcing its aquaculture potential

Morais

Aragão

Cabrita

et al. 2014

Reviews in Aquaculture

116

108

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Senegalese sole was one of the earliest identified candidate species with high potential for aquaculture diversification in the south of Europe. Its culture has been possible, and commercially attempted, for several decades, but intensive production has been slow to take off. This has been explained mostly by serious disease problems, high mortality at weaning, variable growth and poor juvenile quality. However, a strong and sustained research investment that started in the eighties has led to a better understanding of the requirements and particularities of this species. More recently, better management and technical improvements have been introduced, which have led to important progress in productivity and given a new impetus to the cultivation of Senegalese sole. As a result, the last 5 years have marked a probable turning point in the culture of sole towards the development of a knowledge-driven, competitive and sustainable industry. This review will focus on the main technical improvements and advances in the state of knowledge that have been made in the last decade in areas as diverse as reproductive biology, behaviour, physiology, nutritional requirements, modulation of the immune system in response to environmental parameters and stress, and characterization and mitigation of the main disease threats. It is now clear that Senegalese sole has important particularities that differentiate it from other current and candidate marine aquaculture species, which bring about important challenges, some still unsolved, but also notable opportunities (e.g. a nutritional physiology that is better adapted to dietary vegetable ingredients), as will be discussed here.

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“…These studies evaluated, for instance: (1) the reproductive cycle or reproductive performance of fish in captivity (Izquierdo et al, 2001); (2) larval, juvenile, and adult nutrition (Sargent et al, 1995(Sargent et al, , 1999Izquierdo et al, 2001;Andrade et al, 2010;Araújo et al, 2012); (3) smoltification (Björnsson et al, 2011); (4) trophic interrelationship (Lowe-McConnell, 1999;Bittar et al, 2012); and (5) effects of pollutants on energetic substrates (Lima et al, 2011;Vieira et al, 2013). Besides, in several fish species that are candidates for aquaculture, deposition of adequate energetic substrates in the tissues, as liver and ovaries, are essential for a good reproductive performance, successful egg mass, and fingerling production (Fernández-Palacios et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

“…Studies on the improvement of broodstock nutrition show that protein and lipid (including fatty acid) mobilization significantly improves not only egg and sperm quality but also larvae production (Fernández-Palacios et al, 2011;Araújo et al, 2012). Mobilization patterns include the preferential accumulation of energetic substrates among different teleost species.…”

Section: Introductionmentioning

confidence: 99%

Mobilization of energetic substrates in the endangered catfish Steindachneridion parahybae (Siluriformes: Pimelodidae): changes in annual reproductive cycle in captivity

et al. 2018

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This study aimed at analyzing the energetic substrate (ES) in the main storage tissues of Steindachneridion parahybae, throughout the reproductive cycle in captivity. Differently from wild, in captivity, feeding is not interrupted during the reproductive period, the females do not spawn spontaneously, and they are sedentary. Adult females were sampled monthly and based on their histology and gonadosomatic index (GSI), ovaries were classified into: previtellogenic (PRV), vitellogenic (VTG), and regression (REG) stages. Ovaries at the VTG stage showed higher protein and lipids levels than at the PRV stage with a positive correlation between these substrates and the GSI. Muscle was the main source of proteins transferred to the ovaries, according to the negative correlation between these organs. Lipids remained unchanged in the liver, which is an important supplier in vitellogenesis, a pattern that probably occurs due to the continuous feeding. Muscular glycogen levels were higher at the VTG and REG than at the PRV stages. Plasma triglycerides were also higher during REG, while glucose levels were more elevated during the VTG stage. These results suggest that with constant food supply, the pattern of deposition of ES in S. parahybae is different from that described for other wild potamodromous species.Keywords: Glycogen, Lipids, Metabolic substrate, Protein, Reproductive cycle.O objetivo deste estudo foi analisar a composição do substrato energético (SE) nos principais tecidos de armazenamento de Steindachneridion parahybae, durante todo o ciclo reprodutivo em cativeiro. Diferentemente do ambiente natural, em cativeiro, a alimentação desses animais não é interrompida durante o período reprodutivo, as fêmeas não desovam espontaneamente, e são sedentárias. Fêmeas adultas foram amostradas mensalmente e baseada na histologia e no índice gonadossomático (IGS), os ovários foram classificados: estádios pré-vitelogênico (PRV), vitelogênico (VTG) e regressão (REG). Os ovários no estádio VTG apresentaram uma maior concentração de lipídeos e proteínas em relação ao estágio PRV. Esses substratos correlacionaram-se positivamente com o IGS. O músculo foi a principal fonte de proteína transferida aos ovários, como foi confirmado pela análise de correlação negativa entre esses órgãos. Os lipídeos mantiveram-se inalterados no fígado, considerado um importante órgão fornecedor de lipídeos para a vitelogênese, padrão que possivelmente ocorreu devido à contínua alimentação. A concentração do glicogênio muscular foi mais elevada durante os estágios VTG e REG em relação ao PRV. A concentração de triglicerídeos plasmática apresentou maiores valores no estádio REG enquanto a concentração de glicose no plasma foi maior durante os estádios VTG. Esses resultados sugerem que com alimentação constante, as fêmeas de S. parahybae apresentam um distinto padrão de mobilização dos substratos energéticos em relação ao que já foi descrito para outras espécies potamódromas de ambiente natural. Palavras-chaves:Ciclo reprodutivo, Glicogênio, Lipídeos, P...

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Effects of Broodstock Diet on Eggs and Larvae

Cited by 53 publications

References 176 publications

Effect of two fresh diets and sexual maturation on the proximate and fatty acid profile of several tissues inOctopus vulgaris: specific retention of arachidonic acid in the gonads

Effect of two fresh diets and sexual maturation on the proximate and fatty acid profile of several tissues inOctopus vulgaris: specific retention of arachidonic acid in the gonads

New developments and biological insights into the farming of Solea senegalensis reinforcing its aquaculture potential

Mobilization of energetic substrates in the endangered catfish Steindachneridion parahybae (Siluriformes: Pimelodidae): changes in annual reproductive cycle in captivity

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