Effect of Darkness and Water Flow Rate on Survival, Grazing and Growth Rates of Abalone Haliotis Rufescens Postlarvae

Searcy-Bernal, Ricardo; Gorrostieta-Hurtado, E

doi:10.2983/0730-8000(2007)26[789:eodawf]2.0.co;2

Cited by 12 publications

(13 citation statements)

References 11 publications

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“…In a recent study on 6-day-old postlarvae of this same species, the grazing rate was found to be 37.0% higher in the dark (Searcy- Bernal and Gorrostieta-Hurtado 2007). Similarly, the grazing rate of 4-day-old H. corrugata postlarvae also increased 39.7% in darkness relative to constant light exposure.…”

Section: Efecto De La Condición De Luzmentioning

confidence: 82%

“…Por ejemplo, para Navicula jeffreyi se ha reportado que contiene 30% de proteína a intensidades de luz de 4.7 µmol quanta m -2 s -1 , mientras que disminuye a 22% en intensidades de luz mayores (22 µmol quanta m -2 s -1 ) (Watson et al 2005). En este sentido es probable que los organismos mantenidos en la oscuridad hayan ingerido una mayor cantidad de proteína por unidad de peso, que aquellos expuestos a la luz de manera H. rufescens increased growth from 11.8% to 300% more in the dark than in the light (Gorrostieta-Hurtado and Searcy- Bernal 2004, Searcy-Bernal andGorrostieta-Hurtado 2007). The growth rate results obtained in this study for H. corrugata postlarvae follow the same pattern, with an increase of 42.9% under dark conditions.…”

Section: Efecto De La Condición De Luzunclassified

“…higher in the dark than in the light (19-33 µmol quanta m -2 s -1 ) (Searcy- Bernal and Gorrostieta-Hurtado 2007).…”

Section: Introductionmentioning

confidence: 99%

“…Growth of Haliotis fulgens postlarvae is favored by low intensity light (6 µmol quanta m -2 s -1 ) (Searcy-Bernal et al 2003), while H. rufescens postlarvae grow up to three times more in the dark than in the light, an effect that can be observed since the first week of age SearcyBernal 2004, Searcy-Bernal andGorrostieta-Hurtado 2007). In general, postlarval growth depends on the amount of food supplied, but this dependency can also be modified by the illumination provided.…”

Section: Introductionmentioning

confidence: 99%

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Effect of darkness on the early postlarval development of Haliotis corrugata abalone fed different diatom densities

Gorrostieta-Hurtado¹,

Searcy-Bernal²,

Anguiano-Beltrán³

et al. 2009

Cienc. Mar.

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Four-day-old postlarvae of the abalone Haliotis corrugata were exposed to different diatom densities (Navicula incerta, 0 to 8000 cells mm–2) under two illumination conditions: constant light (19–21 µmol quanta m–2 s–1) and darkness. The effect of these two factors on postlarval grazing rate, survival, and growth was evaluated. The experiment was conducted for 14 days in 10-mL sterile wells following a split-plot experimental design with three replicates per treatment. The highest grazing rate was observed in the 2000 cells mm–2 density treatment and it was higher in darkness (196 ± 67 cells pl–1 h–1) than in constant light (139 ± 36 cells pl–1 h–1). Mean survival was also higher in darkness (59%) than under constant light (44%), as was mean growth rate (20 and 14 µm d–1, respectively). Growth rate at the end of the experimental period tended to decrease with the increase in diatom density. Higher grazing and growth rates in darkness reinforce the hypothesis that the nocturnal habits of abalone develop soon after metamorphosis and not at juvenile stages as usually considered.

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Section: Efecto De La Condición De Luzmentioning

confidence: 82%

Section: Efecto De La Condición De Luzunclassified

“…higher in the dark than in the light (19-33 µmol quanta m -2 s -1 ) (Searcy- Bernal and Gorrostieta-Hurtado 2007).…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of darkness on the early postlarval development of Haliotis corrugata abalone fed different diatom densities

Gorrostieta-Hurtado¹,

Searcy-Bernal²,

Anguiano-Beltrán³

et al. 2009

Cienc. Mar.

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show abstract

“…Rapid expansion of rearing facilities in the inner coastal bays in Fujian has led to the overcrowding of floating rafts, which reduces water flow, thereby affecting the growth and survival of abalone (Fleming et al 1997;Searcy-Bernal & Gorrostieta-Hurtado 2007;Wassnig, Roberts, Krsinich & Day 2010). In addition, there are significant issues with the biofouling of the rearing baskets.…”

Section: Introductionmentioning

confidence: 99%

Suitability of cage culture for Pacific abaloneHaliotis discus hannaiIno production in China

Zhang

2012

Aquac Res

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Pacific abalone (Haliotis discus hannai Ino) aquaculture is a thriving industry in China. This study describes a novel submerged cage culture system for abalone rearing in Fujian, South China. The cage consisted of five vertical slots that were oriented perpendicular to the flow of water. The slots were separated by six vertically connected plastic plates for abalone attachment and shelter at the bottom of the cage. Experiment 1 was designed to determine the appropriate stocking density at the start of the abalone sea-based production cycle. Eight-month-old hatchery reared and size-graded juveniles were transferred to the sea-based culture system. For different stocking densities, shell length of juveniles obtained in this novel culture system on 2, 3.5 and 5 months, respectively, was compared with shell lengths obtained in a traditionally multi-tier basket culture system. In Experiment 2, daily growth rates (DGRs) in shell length and biomass in terms of wet weight of 2-year-old abalones reared in cage and tiered basket culture systems were compared over a 6-month period. Results of Experiment 1 showed that growth of abalone in the cage culture system is density-dependent; the mean final shell length of juveniles obtained was 6.7-15.9% higher than in tiered baskets system even at the same initial stocking density. In Experiment 2, DGRs in shell length of 53.83-78.38 lm day À1 obtained in cage system were significantly higher than that in tiered baskets (P < 0.01). And in terms of wet weight biomass, it was 1.48-3.01 times higher in the cage system compared with the traditional system. Abalone survival was more than 87.5% in both culture systems in both experiments. Advantages of the newly established cage culture system included better growth performance of the animals reared and potential improvement of rearing conditions, such as improved water flow velocity and dissolved oxygen.

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Grazing periodicity, grazing rate, feeding preference, and gut examination of early juveniles of abalone Haliotis asinina–fed five benthic diatom species

2022

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Effect of Darkness and Water Flow Rate on Survival, Grazing and Growth Rates of Abalone Haliotis Rufescens Postlarvae

Cited by 12 publications

References 11 publications

Effect of darkness on the early postlarval development of Haliotis corrugata abalone fed different diatom densities

Effect of darkness on the early postlarval development of Haliotis corrugata abalone fed different diatom densities

Suitability of cage culture for Pacific abaloneHaliotis discus hannaiIno production in China

Grazing periodicity, grazing rate, feeding preference, and gut examination of early juveniles of abalone Haliotis asinina–fed five benthic diatom species

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