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| Diniz,Daniel G.; Varella,Jamille E.A.; Guimarães,Maria Danielle F.; Santos,Arthur F.L.; Fujimoto,Rodrigo Y.; Monfort,Karla C.F.; Pires,Marcus A.B.; Martins,Maurício L.; Eiras,Jorge C.. |
| The infection of the estuarine teleost fishes Mugil gaimardianus Desmarest, 1831 (Mugilidae), Arius phrygiatus Valenciennes, 1839 (Ariidae), Conodon nobilis Linnaeus, 1759 (Haemulidae), Cetengraulis edentulus Cuvier, 1829 (Engraulidae), and Anableps anableps Linnaeus, 1758 (Anablepidae) by praniza larvae of Gnathiidae (Crustacea, Isopoda) was studied in specimens fished off the Atlantic Ocean in Northeast of Pará State, near Bragança, Brazil. The highest infection prevalence value was found in Anableps anableps (42.3%) and the lowest in Conodon nobilis (9.1%). The mean intensity varied from 1 parasitein Conodon nobilis to 19.5 in Arius phrygiatus. A description of the larvae is provided. The morphology of the mouthparts is related to the blood sucking... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fish; Parasites; Isopoda; Gnathiidae; Brazil. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652008000400007 |
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| Santos,Rudã F.B.; Dias,Henrique M.; Fujimoto,Rodrigo Y.. |
| The objective of this work was to evaluate the acute toxicity of formalin and histopathological effects on the Amazon ornamental fish, bluespotted coridora (Corydoras melanistius). A randomized design was used, with ten concentrations of formalin (40%) (0, 3, 6, 12, 25, 50, 100, 150, 200 and 250mg.L-1) with four replicates and five fish per container (3L) in static system for 96 hours. The moribund fish were killed and fixed in 10% formalin to proceed the histopathological analysis of gill, liver and kidney. At the end of this experiment the following mortality rates (%) were obtained in increasing order of exposure: 0, 0, 0, 0, 0, 65, 85, 100, 100 and 100%. The lethal concentration 50% (LC50-96h (I)) estimated was 50.76 mg.L-1 with regression of y =... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lethal concentration; Corydora; Formaldehyde; Toxicity; Histology; Amazon. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652012000400014 |
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| Fujimoto,Rodrigo Y.; Neves,Mikaelle S.; Santos,Rudã F.B.; Souza,Natalino C.; Couto,Márcia V.S. do; Lopes,Josiane N.S.; Diniz,Daniel G.; Eiras,Jorge C.. |
| A total of 281 specimens of freshwater armored ornamental fish species (Leporacanthicus galaxias, Lasiancistrus saetiger,Cochliodonsp., Hypostomussp.,Pseudacanthicus spinosus, Ancistrussp. andRineloricariacf. lanceolata) were captured at the hydrological basin of Guamá River, Pará, Brazil. The infection by Trypanosoma spp. was inspected. The morphological and morphometric characterization of the parasites and the hematological parameters were determined. Leporacanthicus galaxias andPseudacanthicus spinosus presented 100% infection prevalence, and the other species showed a variable prevalence of infection. The parasites showed clearly different morphotypes and dimensions, and probably belong to different species. The hematological response to the infection... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Freshwater fish; Hematological parameters; Infection; Trypanosoma spp. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000301149 |
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