Utilização de óleos vegetais em dietas para juvenis de piava (Leporinus obtusidens)

Adorian, Taida Juliana; Mombach, Patrícia Inês; Pianesso, Dirleise; Uczay, Juliano; Decarlli, Junior; Lazzari, Rafael

doi:10.5965/223811711622017121

Cited by 1 publication

(1 citation statement)

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“…This species of fish is ideal for intensive cultivation, and has good consumer acceptance due to the taste of its meat and its size as well; it can weigh up to 7.5 kg (GLUSCZAK et al 2006;ADORIAN et al 2017).…”

Section: Fish and Study Areamentioning

confidence: 99%

Association of Epistylis spp. (Ciliophora: Peritrichia) with parasitic crustaceans in farmed piava Megaleporinus obtusidens (Characiformes: Anostomidae)

Pala

Farias

Alves

et al. 2018

Rev. Bras. Parasitol. Vet.

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Parasitic diseases have caused significant problems to global aquaculture production. These studies will further our knowledge of this complex problem and help implement adequate prevention measures and control strategies. The present study aimed to investigate the presence of parasites in Megaleporinus obtusidens and to describe the epidemiology and pathology of parasitic infections in these fish. Five moribund fish were sent for parasitological examination. The integument and gills were scrapped off with a glass slide, and samples were examined under a light microscope. Parasitic crustaceans found in these specimens were submitted for scanning electron microscopy and histological analyses. The crustaceans Dolops carvalhoi and Lernaea cyprinacea and the Epistylis spp. were present in all fish examined. Epistylis spp. were also seen on the entire surface of the crustacean integument. Microscopic lesions observed in the parasitized gills included hyperplasia and hypertrophy of the lamellar epithelium, an inflammatory infiltrate, telangiectasia, foci of hemorrhage and necrosis, fusion of the secondary lamellae, and detachment of the lamellar epithelium. Crustacean parasites are important mechanical vectors of Epistylis infection and disseminate the disease in fish farming operations. Epistylis spp. infection affects the health of fish and has significant ecological and economical impact on aquaculture.

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Section: Fish and Study Areamentioning

confidence: 99%