Effects of trophic levels (chlorophyll and phosphorous content) in three different water bodies (urban lake, reservoir and aquaculture facility) on gill morphology of Nile tilapia (Oreochromis niloticus)

Autor(es)

Shimada Borges, J. C. ^{[1, 2, 3]} ; Salimbeni Vivai, A. B. B. ^{[2, 3]} ; Branco, P. C. ^{[1, 2]} ; Silva Oliveira, M. ^[1] ; Machado Cunha da Silva, J. R. ^{[2, 4]}

Afiliação do(s) autor(es)

^[1] Ctr Univ Fac Metropolitanas Unidas, Fac Med Vet, Sao Paulo - Brazil

^[2] Univ Sao Paulo, Inst Ciencias Biomed, ICB USP, BR-05508 Sao Paulo - Brazil

^[3] Univ Paulista UNIP, Fac Ciencias Biol, ICS, BR-01533000 Sao Paulo - Brazil

^[4] Univ Sao Paulo, Ctr Biol Marinha, CEBIMar, Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Applied Ichthyology; v. 29, n. 3, p. 573-578, JUN 2013.
• Citações Web of Science: 3

Resumo

Histological and ultrastructural analyses of gills were observed in Nile tilapia collected from three different waterbodies in southeast Brazil: an urban lake in a park in the city of SAo Paulo, a reservoir in a rural city, and a commercial aquaculture facility. These waterbodies were analyzed and classified as hypereutrophic, eutrophic, and supereutrophic, respectively, with 310.00, 94.00, 28.00 of phosphate (PO4 2 gL1) and 65.49, 24.95, 12.83 of chlorophyll (gL1). A significant difference in the histological alterations index (HAI) was observed only in fish from the urban lake, with the presence of cell hypertrophy, hyperplasia, aneurism, and other alterations. When compared to the other groups, a large quantity of rodlet cells was also observed in the urban group. These results demonstrate the correlation of eutrophic states of water with gill morphology. Also discussed is the premise that large amounts of organic material dissolved in water can alter the morphology of the fish gills. (AU)

• Processo FAPESP: 06/07168-0 - Efeito das águas eutróficas da lagoa do Parque da Aclimação nas brânquias de tilápias do nilo (Oreochromis niloticus)
• Beneficiário: Alfonso Braga Bartolini Salimbeni Vivai
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica