O sistema está realizando uma manutenção regular. Resultados de buscas podem variar durante o processo.

Show simple item record

dc.contributor.authorde Araujo, Mariana Cutolo
dc.contributor.authorValenti, Wagner Cotroni [UNESP]
dc.identifier.citationBoletim do Instituto de Pesca. São Paulo: Inst Pesca, v. 37, n. 2, p. 155-164, 2011.
dc.description.abstractThe effects of four light intensities (0; 2.8 +/- 0.9; 5,5 +/- 1,8 e 7,8 +/- 2,5 mu mol s(-1) m(-2), about 136.5 +/- 87.5; 273 +/- 43.8 e 390 +/- 125 lux, respectively) on survival, productivity, weight gain and larval development of Macrobrachium amazonicum were investigated. Four treatments with three replicate tanks were evaluated. Newly hatched larvae were held in black tanks (80.2 +/- 0.6 larvae L(-1)) filled with 50-L-brackish water (salinity of 10), in a recirculating system. Tanks were covered with shadow cloth allowing 35% and 70% light, respectively, to reach light intensities of 2.8 +/- 0.9 and 5.5 +/- 1.8 mu mol s(-1) m(-2) at the water surface. Complete absence of light (0 mu mol s(-1) m(-2)) was obtained covering the tanks with opaque black plastic, and full-light condition used no covering (7.8 +/- 2.5 mu mol s(-1) m(-2)). Observations showed that the survival rate was not affected by light intensity. Productivity and weight gain were higher under 7.8 +/- 2.5 mu mol s(-1) m(-2) light intensity than under 0 and 2.8 +/- 0.9 1 mu mol s(-1) m(-2) intensities (P<0.05). The larval development index was similar among the treatments under the different light intensities. However, from stage VII this index was increased slightly in the treatment under 7.8 +/- 2.5 mu mol s(-1) m(-2) light intensity. In conclusion, light intensity affects larval development of M. amazonicum. Values as high as 7.8 mu mol s(-1) m(-2) (about 390 lux) improve the larval performance by enhancing development, productivity and weight gain compared to lower values.en
dc.publisherInst Pesca
dc.relation.ispartofBoletim do Instituto de Pesca
dc.sourceWeb of Science
dc.subjectAmount of lighten
dc.subjectfreshwater prawnen
dc.titleEfeito da intensidade luminosa no desenvolvimento larval do camarão-da-amazônia, Macrobrachium amazonicumpt
dc.title.alternativeThe effects of light intensities on larval development of amazon river prawn, Macrobrachium amazonicumen
dcterms.rightsHolderInst Pesca
dc.contributor.institutionUniversidade Federal do Recôncavo da Bahia (UFRB)
dc.contributor.institutionUniversidade Estadual Paulista (UNESP)
dc.description.affiliationUniv Fed Reconcavo Bahia, Ctr Ciencias Agr Ambientais & Biol, Bairro Ctr, BR-44380000 Cruz Das Almas, BA, Brazil
dc.description.affiliationUniv Estadual Paulista, Ctr Aquicultura, BR-11330900 Sao Vicente, SP, Brazil
dc.description.affiliationUnespUniv Estadual Paulista, Ctr Aquicultura, BR-11330900 Sao Vicente, SP, Brazil
dc.rights.accessRightsAcesso aberto
Localize o texto completo

Files in this item


There are no files associated with this item.

This item appears in the following Collection(s)

Show simple item record