Navegando por Assunto "Lambari"

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Acesso aberto (Open Access)
Controle alternativo de helmintos de Astyanax cf. zonatus utilizando fitoterapia com sementes de abóbora (Cucurbita maxima) e mamão (Carica papaya)
(2012-01) FUJIMOTO, Rodrigo Yudi; CORDEIRO, Helrik da Costa; RAMOS, Fabrício Menezes
The objective of this study was to evaluate the effectiveness of an alternative method with pumpkin and papaya seeds, dried and ground, for control of helminth parasites of Astyanax cf. zonatus. Sixty fish were distributed into twelve containers, with one fish/liter. The experiment consisted of four treatments and three replications: TJ = fish in fasting; TRC = fish fed with commercial diet; TSA = fish fed ad libitum with pumpkin seed, and TSM = fish fed ad libitum with papaya seeds. After seven days of feeding, all fish were weighed and blood was taken for blood smears. Efficacy was determined by checking the presence of parasites in the gills, stomach and intestine, in 40% of fishes per treatment (n=6). TJ and TSM showed 39% and 25% of weight loss respectively. The TSA showed better efficacy against the nematode in intestine and stomach (95.26% and 92.48%). The TSM promoted 72% of efficiency on monogeneans control. Hematology revealed an increase of monocyte values to treatment TSM. A decrease of eosinophil values was observed in treatments TSA, TSM and TRC. Thus, feeding fishes with pumpkin is a effective alternative method of low cost for control of nematodes in Astianax cf. zonatus.
Acesso aberto (Open Access)
Parasites of four ornamental fish from the Chumucuí River (Bragança, Pará, Brazil)
(2013-03) FUJIMOTO, Rodrigo Yudi; BARROS, Zaira Monik Nunes de; MARINHO FILHO, Adjalbas Nunes; DINIZ, Daniel Guerreiro; EIRAS, Jorge Costa
The objective of the present study was to evaluate the parasite fauna of four species of ornamental fish collected in the Chumucuí River, municipality of Bragança, Pará, Brazil. From June 2006 to December 2007. Fishes (n=307) belonging to four species were collected, including 23 specimens of Moenkhausia sanctaefilomenae (redeye tetra), 37 Carnegiella strigata (marbled hatchetfish), 7 Chilodus punctatus (spotted headstander), and 240 Astyanax bimaculatus (twospot astyanax). The parasites found belonged to three taxa: monogeneans in the gills, nematodes (larvae of Capillaria sp. and Contracaecum sp.) in the digestive tract and liver and acanthocephalans (Quadrigyrus torquatus, Q. brasiliensis and Q. nickoli) in the stomach and intestine. Astyanax bimaculatus presented higher prevalence of acanthocephalans in the wet season, and lower prevalence of nematodes in the dry season. The possible importance of these parasites in the exportation of ornamental fish is discussed.