Intestinal histological alterations in farmed red-bellied pacu Piaractus brachypomus (Characiformes: Serrasalmidae) heavily infected by roundworms

Autor(es)

Cuadros, Ruben C. ^[1] ; Rivadeneyra, Norma L. S. ^[2] ; Flores-Gonzales, Anai ^[3] ; Mertins, Omar ^[4] ; Malta, Jose C. O. ^[5] ; Serrano-Martinez, M. Enrique ^[6] ; Mathews, Patrick D. ^{[7, 4]}

Afiliação do(s) autor(es)

^[1] CITE Pesquero Amazonico Ahuashiyacu, Inst Tecnol Prod, Tarapoto, San Martin - Peru

^[2] CITE Pesquero Amazonico Pucallpa, Inst Tecnol Prod, Loreto - Peru

^[3] Res Inst Peruvian Amazon IIAP AQUAREC, Puerto Maldonado 17000, Madre De Dios - Peru

^[4] Univ Fed Sao Paulo, Paulista Med Sch, Dept Biophys, BR-04023062 Sao Paulo - Brazil

^[5] Natl Inst Amazonian Res, Lab Parasitol & Pathol Fish, BR-69060001 Manaus, Amazonas - Brazil

^[6] Univ Peruana Cayetano Heredia, Fac Vet Med & Zootech, Lima 15102 - Peru

^[7] Univ Sao Paulo, Inst Biosci, Dept Zool, BR-05508090 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: AQUACULTURE INTERNATIONAL; v. 29, n. 3 FEB 2021.
• Citações Web of Science: 0

Resumo

The farmed red-bellied pacu Piaractus brachypomus is a valuative commercial fish widely exploited in fish farming. Histopathologic alterations in small intestine of this fish were associated with heavy roundworms infection. Of a total of thirty-five fish examined, all were parasitized with a prevalence of 100%, intensity of 290-6403, and mean intensity of infection of 4467.5 parasites per fish. According to the morphological features of whole nematodes examined using light and electronic microscopy, the parasite was identified as Rondonia rondoni Travassos. Rev Vet e Zoot 10, 59-70; 1920. The fish intestinal tissue alterations include fusion of villi, edema, disorganization of epithelial cells, epithelial abrasion, and flaking of the villus at mucosa layer level and submucosa layer with some regions of necrosis and lymphocyte infiltrate. This is the first report of histopathological alterations caused by infection of the atractid nematode R. rondoni in a farmed population of P. brachypomus in the Peruvian Amazon. The study points out the need of improving the strategies of parasitic prevention and control in order to better prevent future disease outbreaks. (AU)

• Processo FAPESP: 18/20482-3 - Diversidade de cnidários microscópicos da Bacia Amazônica com ênfase na filogenia, sistemática e interação com seus hospedeiros
• Beneficiário: Patrick Mathews Delgado
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado