Survival, growth and digestive enzyme activity of juveniles of the fat snook (Centropomus parallelus) reared at different salinities

Tsuzuki, Mônica Yumi; Sugai, Juliet Kiyoko; Maciel, Julio Cesar; Francisco, Claire Juliana; Cerqueira, Vinícius Ronzani

doi:10.1016/j.aquaculture.2007.05.002

Cited by 90 publications

(79 citation statements)

References 31 publications

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“…Nevertheless, the weight and length was compared and showed no statistic difference after 60 days of exposure to altered salinity. Similarly, Tsuzuki et al (2007b) observed no significant differences in C. parallelus growth after 50 days at a salinity of 5, 15 or 35 and the final mean weight was similar from the individuals of the present study, between 0.84 to 0.91 g. Other experiments with juveniles of C. parallelus also observed this weight range (Corrêa and Cerqueira, 2007;Ferraz et al, 2011) at this stage. These results indicate that juvenile C. parallelus are capable of acclimating to a wide range of salinity without significant effects on growth.…”

Section: Discussionsupporting

confidence: 63%

“…This finding indicates excellent resistance to a wide range of salt concentrations. Previous studies have also demonstrated no difference in the survival rates of C. parallelus reared in environments of different salinities (Tsuzuki et al, 2007b). Nevertheless, an abrupt salinity change should be avoided due to the high mortality rate observed when small juveniles are directly transferred from seawater to freshwater (Tsuzuki et al, 2007a).…”

Section: Discussionmentioning

confidence: 99%

“…Although juveniles of C. parallelus are naturally found in a wide salinity environment, it has been shown that salinity does affect fish development (Boeuf and Payan, 2001). In previous experiments, salinity specifically affected C. parallelus food intake, growth (Rocha et al, 2005) and digestive enzyme activity (Tsuzuki et al, 2007b). Nevertheless, the relationship between the osmoregulatory system and development at different salinities has yet to be explored in C. parallelus.…”

Section: Introductionmentioning

confidence: 99%

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The effect of salinity on osmoregulation and development of the juvenile fat snook, Centropomus parallelus (POEY)

et al. 2013

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Eurihaline fish support waters with different salt concentration. However, numerous studies have shown that salinity can affect fish development. Thus, the effect of salinity change from 20 to 5 and 35 on survival, weight, length, gill chloride cell ultrastructure and gill Na + , K + ATPase activity was evaluated in Centropomus parallelus following short-term (6, 24 and 96 hours) and long-term exposure (30 and 60 days). Salinity did not affect C. parallelus survival, final weight and length. The quantity of chloride cells increased visibly at salinities of 5 and 35, with the cells exhibiting the typical features of uptake and secretory cells, respectively. Na + , K + ATPase activity in the gill of the C. parallelus was significantly greater at a salinity of 5 than at a salinity of 20 or 35 after 96 hours, but not after 30 or 60 days. These results indicate that salinity change from high to low salt water induces gill chloride cell and Na + , K + ATPase activity adaptations after short-term exposure. However, after long-term exposure at salinity 5, gill Na + , K + ATPase activity is no more necessary at high levels. The increase in salinity to 35 does not induce significant change in gills. Juveniles of C. parallelus may thus be capable of acclimating to salinities of 5 to 35 for 60 days without significant effects on development.Keywords: Centropomus parallelus, chloride cell, osmoregulation, Na + , K + ATPase. O efeito da salinidade sobre a osmoregulação e o desenvolvimento do juvenil de robalo-peva, Centropomus parallelus (POEY) ResumoPeixes eurihalinos suportam águas com diferentes concentrações de sal. Contudo, muitos estudos têm mostrado que a salinidade pode afetar o desenvolvimento do peixe. Portanto, o efeito da mudança de salinidade de 20 para 5 e 35 na taxa de sobrevivência, peso, comprimento, morfologia das células de cloreto branquiais e atividade da Na + , K + ATPase foram avaliadas no Centropomus parallelus após curto (6, 24 e 96 horas) e longo tempo de exposição (30 e 60 dias). A salinidade não afetou a sobrevivência, o peso e comprimento final do robalo-peva. A quantidade de células de cloreto aumentou visivelmente nas salinidades 5 e 35, exibindo morfologias típicas de células que absorvem e secretam sal, respectivamente. A atividade da Na + , K + ATPase nas brânquias do C. parallelus foi significativamente maior na salinidade 5 do que nas salinidades 20 ou 35 após 96 horas, mas não após 30 e 60 dias. Esses resultados indicam que a mudança de alta para baixa salinidade provoca adaptações nas células de cloreto e na atividade da Na + , K + ATPase branquial em curto prazo. Contudo, após longa exposição na salinidade 5, a alta atividade da Na + , K + ATPase branquial não é mais necessária. O aumento de salinidade para 35 não induz mudanças significativas nas brânquias. Portanto, juvenis de C. parallelus possuem a capacidade de aclimatação nas salinidades de 5 a 35 sem efeitos significativos no desenvolvimento após 60 dias.Palavras-chave: Centropomus parallelus, célula de cloreto, osmoregula...

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Section: Discussionsupporting

confidence: 63%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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The effect of salinity on osmoregulation and development of the juvenile fat snook, Centropomus parallelus (POEY)

et al. 2013

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“…To achieve a salinity of 17 ppt, seawater was mixed with chlorine-free freshwater (considered to be brackish water), and to achieve a salinity of 0 ppt, only chlorine-free freshwater (considered to be freshwater) from the municipal water supply system was used. The salinity level of the brackish and freshwater aquarium was gradually attained by replacing one-seventh of a tank volume of seawater with freshwater daily until the desired salinity level was achieved (Tsuzuki et al, 2007). The fish were maintained at the respective salinity level for 14 days prior to testing.…”

Section: Acquisition Of Animals and Acclimationmentioning

confidence: 99%

“…It also has high market value because of the quality of its meat (Tsuzuki et al, 2007;Cerqueira, 2010).…”

Section: Introductionmentioning

confidence: 99%

Salinity does not alter the effectiveness of menthol as an anesthetic and sedative during the handling and transport of juvenile fat snook (Centropomus parallelus)

2016

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The effectiveness of menthol as anesthetic and sedative for fat snook (Centropomus parallelus) was tested at different salinities. In the first experiment, the fish were exposed to different concentrations of menthol (25, 37 and 50 mg L -1 ) in water at different salinities (0, 17 and 36 ppt). In the second experiment, the fish were transported for 10 hours in water with menthol at concentrations of 0, 3.7 and 7.4 mg L -1 under different salinities. Na + and K + ions from fish body and water were analyzed after transport. The optimal concentrations of menthol for a short handling period and surgical induction was 37 and 50 mg L -1 , respectively, and these values were independent of salinity. After transport, neither mortality nor significant changes in ammonia or dissolved oxygen were observed between treatments at the different salinities. The nitrite levels were lower in freshwater than in brackish and saltwater, but did not change with mentol. The total body levels of Na + increased with the salinity increase. Menthol is an effective anesthetic for handling of juvenile fat snook at different salinities. Menthol did not influence the measured water parameters and body ions, and it is not necessary for the transport of fat snook.Keywords: anesthesia, stress, fish, body ions, sedation.Salinidade não altera a eficácia de mentol como um anestésico e sedativo durante a manipulação e transporte de juvenis de robalo peva (Centropomus parallelus) ResumoA eficácia de mentol como anestésico e sedativo para o robalo peva (Centropomus parallelus) foi testada em diferentes salinidades. No primeiro experimento, os peixes foram expostos a diferentes concentrações de mentol (25, 37 e 50 mg L -1 ) em diferentes salinidades na água (0, 17 e 36 ppt). No segundo experimento, os peixes foram transportados por 10 horas em água com mentol nas concentrações de 0, 3,7 e 7,4 mg L -1 sob diferentes salinidades. O Na + e K + do corpo do peixe e a água foram analisados após o transporte. As concentrações ideais de mentol para um período curto de manipulação e indução cirúrgica foi 37 e 50 mg/L, respectivamente, sendo esses valores independentes da salinidade da água. Após o transporte, não foi verificado mortalidades e nem alterações significativas nos níveis da amônia e oxigênio dissolvido entre os tratamentos para as diferentes salinidades. Os níveis de nitrito foram mais baixos em água doce do que em água salobra e água salgada, mas não se alterou com o mentol. Os níveis corporais de Na + e K + aumentaram com o aumento da salinidade. Mentol é um eficaz anestésico para manipulação de robalo peva juvenil em diferentes salinidades. Mentol não influenciou os parâmetros de medição de água e íons do corpo, e não é necessário para o transporte de robalo peva.

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Design and deployment of a smart system for data gathering in aquaculture tanks using wireless sensor networks

Parra

Sendra

Lloret

et al. 2017

Int J Communication

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The design of monitoring systems for marine areas has increased in the last years.One of the many advantages of wireless sensor networks is the quick process in data acquisition. The information from sensors can be processed, stored, and transmitted using protocols efficiently designed to energy saving and establishing the fastest routes. The processing and storing of data can be very useful for taking intelligent decisions for improving the water quality. The monitoring of water exchange in aquaculture tanks is very important to monitor the fish welfare. Thus, this paper presents the design, deployment, and test of a smart data gathering system for monitoring several parameters in aquaculture tanks using a wireless sensor network. The system based on a server is able to request and collect data from several nodes and store them in a database. This information can be postprocessed to take efficient decisions. The paper also presents the design of a conductivity sensor and a level sensor. These sensors are installed in several aquaculture tanks. The system was implemented using Flyport modules. Finally, the data gathering system was tested in terms of consumed bandwidth and the delay Transmission Control Protocol (TCP) packets delivering data from the sensors.

show abstract

Survival, growth and digestive enzyme activity of juveniles of the fat snook (Centropomus parallelus) reared at different salinities

Cited by 90 publications

References 31 publications

The effect of salinity on osmoregulation and development of the juvenile fat snook, Centropomus parallelus (POEY)

The effect of salinity on osmoregulation and development of the juvenile fat snook, Centropomus parallelus (POEY)

Salinity does not alter the effectiveness of menthol as an anesthetic and sedative during the handling and transport of juvenile fat snook (Centropomus parallelus)

Design and deployment of a smart system for data gathering in aquaculture tanks using wireless sensor networks

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