Growth and survival of dorado Salminus brasiliensis (Pisces, Characidae) post-larvae cultivated with different types of food and photoperiods

Schütz, Jackson Haroldo; Nuñer, Alex Pires de Oliveira

doi:10.1590/s1516-89132007000300010

Cited by 25 publications

(23 citation statements)

References 19 publications

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“…This data is in consonance with those found in the first feeding of yamú (Atencio-Garcia et al, 2003) and dourado (Salminus brasiliensis) (Schütz & Nuñer, 2007). These studies verified an improvement of animal development and decreasing of cannibalism by using forage larvae.…”

Section: Resultssupporting

confidence: 90%

“…), which easily reproduce, have also been used as food in larviculture of many fresh water species, being thus considered an excellent food source for initial (growth) phases (Schütz & Nuñer, 2007). Conversely, high costs and difficulty to find adequate products to perform induced fish reproduction has forced farmers to seek for alternative live feedstuff.…”

Section: Introductonmentioning

confidence: 99%

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Combination of diet and water salinity in larviculture of piabanha-do-Pardo ( Brycon vonoi , Lima 2017)

et al. 2017

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1Two experiments were carried out to study piabanha-do-Pardo (Brycon vonoi) larvae development. In the first, six different diets were evaluated, being Artemia sp., plankton, feeds, feeds + Artemia sp., feeds + plankton, and Prochilodus hartii (curimba) larvae. In the second, four different water salinity levels (0, 2, 4, and 6‰) were tested. Both assays were entirely randomized design experiments, lasting for 10 days. At the end of these trials, fish biomass, survival, total length, weight, and specific growth rate were measured. Additionally, water quality, temperature, oxygen, pH, and electric conductivity measurements were made every three days. The curimba larvae diet presented higher survival rate (47.2%) and biomass weight (2.5 g) than the other diets, which were similar among each other. Piabanha-do-Pardo larvae weight, length, and specific growth rate varied with the offered diets. All water salinity treatments showed better results than those observed for fresh water. When cultivated in 2‰ salinization, larvae had 52.5% survival rates and 0.49 g biomass weight, while in the fresh water these results were 6.6% and 0.23 g, respectively. To conclude, we may identify curimba larvae as an adequate diet, and a 2‰ water salinity as recommended if Artemia sp. larvae are fed to piabanha-do-Pardo larvae. Combinações de alimentos e salinidade da água na larvicultura de piabanha-do-Pardo (Brycon vonoi, Lima 2017)Foram conduzidos dois experimentos com larvas de piabanha-do-Pardo Brycon vonoi. No primeiro ensaio, avaliaram-se seis dietas: Artemia sp., plâncton, ração, ração + Artemia sp., ração + plâncton, larvas de Prochilodus hartii (curimba). No segundo, quatro salinidades de água (0, 2, 4 e 6‰), ambos os experimentos em delineamento inteiramente casualizado, com duração de 10 dias. A biomassa, sobrevivência, comprimento total, peso e taxa de crescimento específico foram mensurados ao final dos experimentos; já os parâmetros de qualidade de água, temperatura, oxigênio, pH e condutividade elétrica foram aferidos a cada três dias. O alimento larva de curimba resultou em maior sobrevivên-cia (47,2%) e biomassa (2,5 g) do que os demais tipos, que foram similares entre si. O peso, o comprimento e a taxa de crescimento específico não diferiram entre si para as larvas alimentadas com os diversos tipos de alimento. Todos os tratamentos com salinização apresentaram melhores resultados em relação a água doce sem salinização. No entanto, quando cultivadas sob 2‰ de salinização, as larvas apresentaram 52,5% de sobrevivência e 0,49 g de biomassa, e em água doce sem salinização foram observados apenas 6,6% e 0,23 g, respectivamente. Conclui-se que a utilização de larvas de curimba como dieta é o mais adequado e recomenda-se salinizar a água com 2‰, caso seja fornecida artêmia como alimento.Palavras-chave: Artemia sp.; canibalismo; characiformes; espécie nativa; manejo alimentar; Prochilodus hartii.

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Section: Resultssupporting

confidence: 90%

Section: Introductonmentioning

confidence: 99%

Combination of diet and water salinity in larviculture of piabanha-do-Pardo ( Brycon vonoi , Lima 2017)

et al. 2017

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“…In continuation, we are going to focus on the experiments where authors found survival relation with studied environmental parameters. For photoperiod, authors found that species such as Oreochromis niloticus, Seriola lalandi and Salminus brasiliensis reach higher survival rates under continuous light conditions (El-Sayed & Kawanna, 2004), (Stuart & Drawbridge, 2012), (Schütz & Nuñer, 2007 photoperiod and survival. Similar relation was found with Miichthys miiuy, their maximum death rates were related to continuous dark conditions.…”

Section: Discussion On the Effects Of Environmental Parameters On Fishmentioning

confidence: 99%

“…Authors did not find any differences in SGR. Schütz and Nuñer (2007) studied the effect of photoperiod on post-larvae of Salminus brasiliensis. No correlation was found between growth and photoperiod.…”

Section: Effects Of Photoperiodmentioning

confidence: 99%

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Study of requirements and design of sensors for monitoring water quality and feeding process in fish farms and other environments

Boronat¹

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There are many efforts done in the aquaculture to reach its sustainability, although in reality, it is far from being sustainable. Its negative impacts on the environment can be prevented and corrected by the use of sensors, developing precision aquaculture. The water quality affects to the fish performance. The temperature and salinity are some factors that affect to the fish growth. Nevertheless, other factors such as turbidity, photoperiod and dissolved oxygen among other can affect to the fish feeding needs. To adjust the amount of feed needed is crucial to ensure the sustainability of the aquaculture and to increase the economic profit of the facilities. Monitoring the water quality allows estimating the feed needs. However, it is not enough. To monitor the fish behavior, especially during the feeding period can help to adapt the provided feed. Then, if it is so clear that the monitoring can help to the aquaculture production, why we do not see this monitoring systems in the aquaculture facilities? Why in most of the facilities the feed is given manually without considering the fish feeding behavior?Nevertheless, the current price of the sensors for monitoring the fish farms is extremely high. The employed sensors are in most of the cases, the same that are used for oceanography. The proposed systems in the literature only cover some water quality parameters and usually do not consider fish feeding behavior. It is need low-cost sensors suitable for aquaculture monitoring. Those sensors must also be low-energy consumption, easy to use and with the option to include them in a network in order to send the data. Thus, we can use these sensors and sensors network to monitor the activity, to send alarms if it is necessary and to automatize processes. Moreover, including Internet, the data can be seen remotely. The use of those sensors can help to the aquaculture production.In this thesis, we show the study of requirements and design of sensors for monitoring water quality and feeding process in fish farms and other environments. First, we study in detail the requirements of sensors in aquaculture. Then, we show the state of the art of the current sensors for water quality monitoring and for aquaculture monitoring.Following, we present the design and development of some low-cost sensors and their applications in fish farm facilities with open system and recirculating system. Moreover we show a complete system which monitors up to 10 parameters including water quality (temperature, salinity, turbidity and presence of hydrocarbon/oil layer), tank environment (water level, illumination, presence of workers), and fish feeding behavior (shoal swimming depth, estimation of changes on shoal swimming velocity and feed falling). Moreover, it accomplishes the features of low-cost and low energy consumption. The estimated price for proposed system is less than 100€ per tank. In addition, we show the use of some of the aforementioned sensors for automatic adjustment of fish feeding process.Finally, some of the develop...

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Enteric, hepatic and muscle tissue development of juvenile dourado Salminus brasiliensis fed with lyophilized bovine colostrum

et al. 2016

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Growth and survival of dorado Salminus brasiliensis (Pisces, Characidae) post-larvae cultivated with different types of food and photoperiods

Abstract: ABSTRACT

Cited by 25 publications

References 19 publications

Combination of diet and water salinity in larviculture of piabanha-do-Pardo ( Brycon vonoi , Lima 2017)

Combination of diet and water salinity in larviculture of piabanha-do-Pardo ( Brycon vonoi , Lima 2017)

Study of requirements and design of sensors for monitoring water quality and feeding process in fish farms and other environments

Enteric, hepatic and muscle tissue development of juvenile dourado Salminus brasiliensis fed with lyophilized bovine colostrum

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