Inhibition of sexual maturation in tank reared haddock (Melanogrammus aeglefinus) through the use of constant light photoperiods

Davie, Andrew; Quero, Carlos Mazorra de; Bromage, Niall; Treasurer, James W.; Migaud, Hervé

doi:10.1016/j.aquaculture.2007.04.052

Cited by 56 publications

(32 citation statements)

References 32 publications

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“…; Davie et al . b). These studies clearly demonstrate open phases also called windows of opportunity in the reproductive cycle which can be closed, delayed or advanced by photoperiodic manipulations irrespective of the thermal regime.…”

Section: Broodstock Environmental and Hormonal Manipulationsmentioning

confidence: 99%

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Gamete quality and broodstock management in temperate fish

Migaud

Bell

Cabrita

et al. 2013

Reviews in Aquaculture

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236

152

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The ability to fully control sexual maturation and spawning and to produce large numbers of high quality seeds 'on demand' (i.e. all year long) is a primary requirement for the successful development of aquaculture. This relies on optimal broodstock management practices based on extensive knowledge of the nutritional and environmental requirements of fish in captivity. However, for many established, emerging and new farmed fish species, such knowledge is limited or not available yet. The level of domestication also plays an essential role as stocks with improved traits in farming conditions are selected. Importantly, reliable indicators of egg quality are still lacking and hatcheries still rely on wild harvested broodstocks in many farmed fish species. These key challenges must be addressed urgently to ensure the sustainable development of the European fish farming sector. This review gives an overview of methods to assess egg/sperm quality and many of the most important factors affecting gamete production and quality, including broodstock nutrition, environmental and spawning induction protocols, genetic management, gamete preservation and new reproductive strategies.

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Section: Broodstock Environmental and Hormonal Manipulationsmentioning

confidence: 99%

“…), and increasing days in gadoids (Davie et al . ,b). Within these photo‐responsive windows fall the ‘permissive physiological gates’ whereby the reproductive cycle will proceed only if certain criteria are met (e.g.…”

Section: Broodstock Environmental and Hormonal Manipulationsmentioning

confidence: 99%

Gamete quality and broodstock management in temperate fish

Migaud

Bell

Cabrita

et al. 2013

Reviews in Aquaculture

Self Cite

236

152

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“…Otherwise, several studies on fish showed a positive relationship between continuous exposure to light, body weight, somatic growth, and feed intake. This was observed for the atlantic salmon (Oppedal et al 1997); atlantic cod, Gadus morhua (Taranger et al 2006;Hansen et al 2001), Melanogrammus aeglefinus (Davie et al 2007), Pagrus major (Biswas et al 2010), Oplegnathus fasciatus (Biswas et al 2008), and Sparus aurata (Ginés et al 2004). Nevertheless, the photoperiod manipulation did not influence the total length and body weight of Verasper moseri (Amano et al 2004) and Oreochromis niloticus (Campos-Mendoza;McAndrew;Coward, 2004).…”

Section: Resultsmentioning

confidence: 99%

Effect of photoperiod stress assessment and locomotor activity of female lambari (Astyanax bimaculatu)

Navarro

Murgas

et al. 2014

Ciênc. agrotec.

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Some studies and scientific investments have been done in aquaculture aiming to minimize the stress of the fish due to different factors, as management, nutritional status, water quality, temperature, photoperiod, and salinity. This study aimed to verify the effect of photoperiod on locomotor activity and plasma levels of cortisol and glucose in female Lambari. One hundred and twenty female Lambari adult were maintained in aquaria of 20 liters each in a completely randomized design with three treatments (T1 = 0Light: 24Dark, T2 = 12L: 12D, T3 = 24L: 0D) and four replications. The daily locomotor activity was registered during 15 days using an infrared photocell. After 40 days of experiment and previous fasting for 24 hours, fish were euthanized by a lethal dose of benzocaine. Female Lambari featured a diurnal rhythm of locomotor activity. Lambari subjected to 12:12 and LD photoperiod presented higher cortisol (12L:12E: 190.00 ± 37.73 ng/mL e 24L:0E: 148.850 ± 32.77 ng/mL) and locomotor activity levels and also lower survival rates (30.0 ± 7.07%) when compared to the LD photoperiod (cortisol: 85.570± 7.99 ng/mL, survival rates: 72.5± 4.330%). The glucose concentration (32.167 ± 22.73 mg/dL) and the growth (7.050±0.59cm) of fish subjected to LD photoperiod was significantly lower than in the other treatments. We conclude that light plays an important role in the growth, behavior and welfare of female Lambari. Besides, our data highlighted that fish submitted to a long light period present a more stressed and more aggressive status when compared to fish submitted to a continuous darkness.Index terms: Fish, synchronizer, glucose, cortisol, swimming behaviour. RESUMOAlguns estudos científicos e investimentos têm sido realizados na aquicultura com o objetivo de minimizar o estresse dos peixes, por diversos fatores, como a gestão, a salinidade do estado nutricional, qualidade da água, temperatura, fotoperíodo e salinidade. Este trabalho teve como objetivo verificar o efeito do fotoperíodo na atividade locomotora e níveis plasmáticos de cortisol e glicose em fêmeas de lambari. Cento e vinte fêmeas de lambaris adultas foram mantidas em aquários de 20 litros cada um, em delineamento inteiramente ao acaso, com três tratamentos (T1 = 0 Luz:24 Escuro, T2 = 12L:12E, T3 = 24L:0E) e quatro repetições. A atividade locomotora diária dos lambaris foi registrada durante 15 dias por meio de uma fotocélula infravermelha. Após 40 dias de experimento os peixes, mantidos a jejum de 24 horas, foram previamente anestesiados com benzocaína. As fêmeas de lambaris apresentaram um ritmo de atividade locomotora diurna. Lambaris submetidos aos fotoperíodos 12L:12E e 24L:0E apresentaram maiores níveis de cortisol (12L:12E: 190.00 ± 37.73 ng/mL e 24L:0E: 148.850 ± 32.77 ng/mL) e atividade locomotora, além de menores taxas de sobrevivência (30,0 ± 7,07%) em relação ao regime de 0L:24E (cortisol: 85.570± 7.99 ng/mL, taxa de sobrevivência: 72.5± 4.330%) A concentração de glicose (32.167 ± 22.73 mg/dL) e o crescimento (7.050±0,59cm) dos peixe...

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“…Resultados semelhantes a este em que os pesquisadores verificaram uma relação positiva entre exposição à luz contínua crescimento somático e ingestão alimentar. Esta relação foi observada em salmão do Atlântico (OPPEDAL et al, 1997) em bacalhau do Atlântico, Gadus morhua (HANSEN et al, 2001;TARANGER et al, 2006), em Melanogrammusa eglefinus (DAVIE et al, 2007) e Pagrus major (BISWAS et al, 2010) e Sparus aurata (GINÉS et al, 2004).…”

Section: Resultsunclassified

Efeito Do Fotoperíodo No Crescimento, Consumo Alimentar E Qualidade Da Carcaça De Tilápias Invertidas

Navarro

Ferreira

Navarro

2016

ArqVet

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FERREIRA, T. M. S.; NAVARRO, F. K. S. P. Efeito do fotoperíodo no crescimento, consumo alimentar e qualidade da carcaça de tilápias invertidas. Arq. Ciênc. Vet. Zool. UNIPAR, Umuarama, v. 19, n. 2, p. 77-80, abr./jun. 2016. RESUMO:A incidência luminosa pode induzir diversos efeitos sobre o crescimento, alimentação, desenvolvimento e reprodução de peixes. O fotoperíodo é sinal principal para maior influência sobre o ritmo circadiano dos peixes e pode afetar o ganho de peso, a ingestão de alimento e a utilização de energia. O objetivo deste trabalho foi avaliar os efeitos de diferentes regimes de fotoperíodo no crescimento, consumo alimentar e qualidade da carcaça de tilápias invertidas, em um sistema fechado. Foram utilizados 150 alevinos de tilápias invertidas, provenientes da estação de piscicultura. Os peixes foram acondicionados e distribuídos em 15 aquários com a capacidade de 65 litros cada um, em delineamento inteiramente ao acaso, com três tratamentos e cinco repetições. Os tratamentos diferenciarão nas simulações dos fotoperíodos emerais (horas de luz) que durarão T1= 24 horas de escuro, T2= 12 horas de escuro e 12 horas de Luz, T3= 24 horas de luz. Cada peixe foi considerado uma unidade experimental. Não houve diferença significativa para desempenho, mas houve diferença para Índice gonadossomático (IGS). Conclui-se que o fotoperíodo (12L:12E) promove melhor índice gonadossomático em tilápia. Para melhor qualidade de carcaça e desempenho produtivo sugere o fotoperíodo (24L:0E). PALAVRA-CHAVE: Escuro. Fotoperiodo. Oreochomis niloticus. Ritmo biológico. PHOTOPERIOD EFFECT ON GROWTH, FEED INTAKE AND CARCASS QUALITY REVERSED TILAPIAABSTRACT: The light incidence can induce different effects on growth, feeding and development and reproduction of fish. The photoperiod is the main signal for greater influence on the circadian rhythm of the fish and can affect weight gain, feed intake and energy use. This study aimed to demonstrate the effects of different photoperiodic regimes on growth, feed intake and carcass tilapia quality reversed in a closed system. 150 were used fry reversed tilapia, from fish farming station. The fish were packed and distributed in 15 tanks with a capacity of 65 liters each, in a completely randomized design with three treatments and five repetitions. Treatments differentiate in the simulations of emerais photoperiod (light hours) that will last T1 = 24 hours dark, T2 = 12 hours of darkness and 12 hours light, T3 = 24 hours of light. Each fish was considered an experimental unit. There was no significant difference in performance, but there were differences for IGS. I conclude that the photoperiod (12L: 12D) promotes better GSI in tilapia. To better carcass quality and growth performance suggests the photoperiod (24L: 0D). KEYWORDS: Biological rhythm. Dark. Oreochomis niloticus. Photoperiod. EFECTO DE FOTOPERIODO EN EL CRECIMIENTO, CONSUMO ALIMENTAR Y CALIDAD DE CAPARAZÓN DE TILAPIAS INVERTIDASRESUMEN: La incidencia de luz puede inducir diversos efectos sobre el crecimiento, alimentación...

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Inhibition of sexual maturation in tank reared haddock (Melanogrammus aeglefinus) through the use of constant light photoperiods

Cited by 56 publications

References 32 publications

Gamete quality and broodstock management in temperate fish

Gamete quality and broodstock management in temperate fish

Effect of photoperiod stress assessment and locomotor activity of female lambari (Astyanax bimaculatu)

Efeito Do Fotoperíodo No Crescimento, Consumo Alimentar E Qualidade Da Carcaça De Tilápias Invertidas

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