Larval rearing of the gudgeon, Gobio gobio L., under optimal conditions of feeding with the rotifer, Brachionus plicatilis O.F. Müller

Kestemont, Patrick; Awaïss, Aboubacar

doi:10.1016/0044-8486(89)90042-2

Cited by 19 publications

(7 citation statements)

References 15 publications

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“…Kestmont & Awaïss (1989) verificaram que a freqüência alimentar de quatro vezes ao dia foi a que proporcionou maior crescimento para larvas de Gobio gobio. O mesmo foi constatado por Hayashi et al…”

Section: Resultsunclassified

Freqüência alimentar na larvicultura do trairão (Hoplias lacerdae)

Luz

Portella

2005

R. Bras. Zootec.

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RESUMO -O experimento foi realizado com o objetivo de se desenvolver estratégias de manejo alimentar durante a larvicultura de trairão. Larvas com oito dias de vida foram contadas individualmente e alojadas na densidade de 30 larvas/L em 20 unidades experimentais com volume útil de 5 L cada. As larvas foram submetidas a quatro tratamentos de freqüência alimentar: F1 -uma vez ao dia; F2 -duas vezes ao dia; F3 -três vezes ao dia; F4 -quatro vezes ao dia, cada um com cinco repetições. A alimentação foi fornecida na mesma quantidade em todos os tratamentos. Para avaliação do crescimento dos animais, foram realizadas biometrias a cada cinco dias. Após 15 dias sob os tratamentos, quando os animais estavam com 23 dias de vida, o experimento foi encerrado, avaliando-se também as taxas de sobrevivência, de mortalidade, de canibalismo e de resistência ao estresse. Na primeira avaliação biométrica, aos 13 dias de vida, não foram encontradas diferenças significativas no crescimento das larvas submetidas às diferentes freqüências alimentares. No entanto, aos 18 e 23 dias de vida, os animais do tratamento F1 apresentaram as menores médias de comprimento e peso. Não foi encontrado efeito significativo da freqüência alimentar sobre as taxas de crescimento específico durante a larvicultura. As diferentes freqüências de alimentação impostas não influenciaram as taxas de sobrevivência, de mortalidade, de canibalismo e de resistência ao estresse, destacando-se as elevadas taxas de sobrevivência (acima de 93%) obtidas durante o período de larvicultura. Portanto, pelo menos durante a criação inicial (até 23 dias de vida), as larvas de trairão podem receber manejo mais simplificado, com fornecimento de alimento apenas duas vezes ao dia, sem prejuízo ao desenvolvimento e à produção de animais.Palavras chave: freqüência de alimentação, Hoplias lacerdae, larvicultura, trairão Effects of Feeding Frequency on Larval Rearing of Trairao (Hoplias lacerdae)ABSTRACT -The effects of feeding management strategies on larval rearing of trairao were evaluated in this trial. Eight-d old larvae were counted and stocked in 20 experimental containers (units with volume of 5 L each), with constant aeration and temperature. The stocking density was 30 larvae/L. The following treatments (feeding frequency) were used: F1 -once a day, F2 -twice a day, F3 -three times a day, F4 -four times a day, each with five replicates. Feeding rate was equal for all treatments. In order to evaluate the animal growth, some samples were collected every five days. At the end of the experiment, after 23 days, the survival, mortality, rates of cannibalism and stress resistance were also evaluated. No significant difference was observed among the growth parameters at 13 days. However, after 18 and 23 days, F1 treatment showed the lowest length and weight averages. No differences of larval specific growth rate due to the feeding frequencies were observed. No effects of feeding frequency on rates of survival, mortality, cannibalism and stress resistance were detected. The surviva...

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Section: Resultsunclassified

Freqüência alimentar na larvicultura do trairão (Hoplias lacerdae)

Luz

Portella

2005

R. Bras. Zootec.

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“…Mann et al, (1997) demonstrated a similar progression among neonatal roach, with ®sh less than two weeks old feeding primarily on rotifers and ingesting diatoms when rotifers were scarce; but they also concluded that roach were not dependent on diatoms as food. Under experimental conditions, Kestemont and Awais (1989) found that newly hatched gudgeon (Gobio gobio L.) consumed up to 2200 rotifers per day, equal to about 120% of their body weight. During the ®rst week after hatching best growth rates were attained with the highest daily ration of 2500 rotifers per larva, increasing to 5500 per larva by week 4.…”

Section: Discussionmentioning

confidence: 99%

“…During the ®rst week after hatching best growth rates were attained with the highest daily ration of 2500 rotifers per larva, increasing to 5500 per larva by week 4. Under these feeding conditions body weight increased from 0Á5 mg on hatching to 17Á5 mg after 4 weeks, although Kestemont and Awais (1989) considered that after two weeks, when body length was 10±12 mm, larger food items (e.g. copepods) would have produced faster growth rates.…”

Section: Discussionmentioning

confidence: 99%

Temporal and spatial variation in zooplankton populations in the River Great Ouse: an ephemeral food resource for larval and juvenile fish

Bass¹,

Pinder²,

Leach³

1997

Regul. Rivers: Res. Mgmt.

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“…During larviculture, high mortality (PUVANENDRAN and BROWN, 1999;DOU et al, 2003) and cannibalism (LUZ and ZANIBONI FILHO, 2001; KESTEMONT et al, 2003;MANDIKI et al, 2007;IMOROU TOKO et al, 2008) are frequent in some species like also Lophiosilurus alexandri (LÓPEZ and SAMPAIO, 2000). During this initial phase of rearing, different live organisms concentrations can affect growth and survival of larvae of different species (KESTEMONT and AWAÏSS, 1989;PUVANENDRAN and BROWN, 1999;DOU et al, 2003;LUZ and PORTELLA, 2015). To larviculture of several neotropical freshwater fish species, Artemia nauplii has been supporting growth and high survival (LUZ and ZANIBONI FILHO, 2001;LUZ and PORTELLA, 2002;JOMORI et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

Effect of daily Artemia nauplii concentrations during juvenile production of Lophiosilurus alexandri

Santos¹,

Correia

Luz

2015

Bol. Inst. Pesca

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The aim of this study was to investigate different daily Artemia nauplii concentrations during juvenile production of pacamã, Lophiosilurus alexandri. Six different daily Artemia nauplii concentrations (100, 400, 700, 1,100, 1,400, and 1,600 nauplii larvae -1 ) were tested during 15 days of feeding. The higher growth (weight and length) and lower water quality (higher ammonium ion levels) were registered to the higher initial daily Artemia nauplii concentration. Survival between 90.9 and 99.1% was not influenced by Artemia nauplii concentrations. Different Artemia nauplii concentrations provided high survival and avoided cannibalistic behavior, and initial concentrations of 1,600 nauplii larvae -1 provide higher growth on L. alexandri larviculture.

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Larval rearing of the gudgeon, Gobio gobio L., under optimal conditions of feeding with the rotifer, Brachionus plicatilis O.F. Müller

Cited by 19 publications

References 15 publications

Freqüência alimentar na larvicultura do trairão (Hoplias lacerdae)

Freqüência alimentar na larvicultura do trairão (Hoplias lacerdae)

Temporal and spatial variation in zooplankton populations in the River Great Ouse: an ephemeral food resource for larval and juvenile fish

Effect of daily Artemia nauplii concentrations during juvenile production of Lophiosilurus alexandri

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