Data/hora: 13/06/2024 06:28:25

Biblioteca(s): | Embrapa Unidades Centrais.
Data corrente: | 15/07/2009
Data da última atualização: | 06/06/2018
Autoria: | VINATEA, L.; GÁLVEZ, A. O.; VENERO, J.; LEFFLER, J.; BROWDY, C.
Afiliação: | Luis Vinatea, Universidade Federal de Santa Catarina/Departamento de Aquicultura/Laboratório de Camarões Marinhos; Alfredo Olivera Gálvez, Universidade Federal Rural de Pernambuco/Departamento de Pesca/Laboratório de Maricultura Sustentável; Jesús Venero, South Carolina Department of Natural Resources/Waddell Mariculture Center; John Leffler, South Carolina Department of Natural Resources/Waddell Mariculture Center; Craig Browdy, South Carolina Department of Natural Resources/Waddell Mariculture Center.
Título: | Oxygen consumption of Litopenaeus vannamei juveniles in heterotrophic medium with zero water exchange.
Ano de publicação: | 2009
Fonte/Imprenta: | Pesquisa Agropecuária Brasileira, Brasília, DF, v. 44, n. 5, p. 534-538, maio 2009
Idioma: | Inglês
Notas: | Título em português: Consumo de oxigênio de juvenis de Litopenaeus vannamei em meio heterotrófico sem renovação de água.
Conteúdo: | This work aimed at determining the dissolved oxygen consumption rate of Litopenaeus vannamei juveniles maintained in a microbial biofloc raceway system at high density with no aeration. Three 4 L bottles were filled for each treatment, sealed hermetically, and placed in an enclosed greenhouse raceway system. Four shrimp (13.2±1.42 g) were assigned to two sets of the bottles, which underwent the following treatments: light conditions with no shrimp; dark conditions with no shrimp; light conditions with shrimp; and dark conditions with shrimp. Dissolved oxygen content was measured every 10 min for 30 min. A quadratic behavior was observed in dissolved oxygen concentration over time. Significant differences for oxigen consumption were observed only at 10 and 20 min between shrimp maintained in the dark and those under light conditions. At 10 min, a higher value was observed in shrimp maintained under light, and at 20 min, in the dark. Significant differences between 10 and 20 min and between 10 and 30 min were observed when oxygen consumption was analyzed over time in the presence of light. Under dark conditions there were significant differences only between 20 and 30 min. Lethal oxygen concentration (0.65 mg L-1) would be reached in less than one hour either under light or dark conditions with no aeration.
Palavras-Chave: | alta densidade; biofloc microbiano; consumo de oxigênio; high density; microbial biofloc; raceway system; sistema de fluxo contínuo.
Thesaurus Nal: | Litopenaeus vannamei; oxygen consumption.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/106085/1/Oxygen-consumption.pdf
Registro original: | Embrapa Unidades Centrais (AI-SEDE)
Exemplares: | AI-SEDE - (45915-1) - UPE - AP - PP - 630.72081 - P474 -  - DIS