Praziquantel, levamisol e difubenzuron no controle de Dolops carvalhoi (Crustacea: Branchiura) e Anacanthorus penilabiatus (Monogenea: Dactylogyridae) em Piaractus mesopotamicus Holmberg, 1887 (Osteichthyes: Characidae)

Abstract

Praziquantel, levamisol e diflubenzuron no controle de AbstractThis assay evaluated the control efficacy of diflubenzuron, praziquantel and levamisole added to the diet of pacu (Piaractus mesoptamicus) infected with Anacanthorus penilabiatus and Dolops carvalhoi. 19 water tanks of 300 L capacity were utilized with 28 fish in each one. The treatments were made by mixing the active principles in the diet. The experiment was evaluated in four harvests done 1 day before and 3, 7 and 15 days after the treatment. The medicated feeding was applied for 7 days. The results of efficacy suggest that the diflubenzuron alone or associated with levamisole and praziquantel was efficient against the crustacean D. carvalhoi and the efficacy in the 3, 7 and 15 days evaluations ranged from 96,2 to 100%. Against the monogenean the drugs did not present efficacy. The results suggest the use of diflubenzuron for the control of D. carvalhoi in captive fishes in special conditions.

High concentration of levamisole in the diet of Colossoma macropomum (Pisces: Serrasalmidae) is effective for controlling monogenean parasites

“…For C. macropomum, 96 h of feeding with 900 mg kg -1 of levamisole had an efficacy of only 55.7%, whereas 240 h of feeding with 1200 mg kg -1 had higher efficacy (84.6%). In P. mesopotamicus, diets with 362 and 640 mg of levamisole per kg feed had low efficacy (15 to 58%) for controlling A. penilabiatus, and feeding for 3 days was more effective than for 15 days (SCHALCH et al, 2009). In contrast, in P. mesopotamicus, diets with 100 to 500 mg of levamisole per kg feed for 15 days did not show efficacy against A. penilabiatus (PAHOR-FILHO et al, 2017).…”

“…in rainbow trout Oncorhynchus mykiss Walbaum 1792 (TOJO & SANTAMARINA, 1998) and against Heterobothrium okamotoi Okamoto, 1963 in Japanese pufferfish Takifugu rubripes Temminck & Schlegel, 1850 were ineffective (HIRAZAWA et al, 2000). For pacu Piaractus mesopotamicus Holmberg, 1887, diets with low concentrations of levamisole did not show efficacy against Anacanthorus penilabiatus Boeger, Husak & Martins 1995(PAHOR-FILHO et al, 2017, or had low efficacy (SCHALCH et al, 2009). Nevertheless, dietary supplementation with levamisole has not been assayed in relation to eliminating monogeneans from C. macropomum.…”

Integridade ambiental da represa de Jurumirim: ictiofauna e relações ecológicas

“…No tegumento, observam-se hemorragias puntiformes, excesso de muco e hiperpigmentação. Nas brânquias, há hipertrofia com hiperplasia do epitélio de revestimento e de células mucoides, além de focos necróticos, que prejudicam as trocas gasosas e iônicas (Schalch et al, 2009). São ectoparasitas reconhecidos como vetores de bacterioses e viroses (Shimura, 1983).…”

In vitro effect of seven antiparasitics on Acolpenteron ureteroecetes (Dactylogyridae) from largemouth bass Micropterus salmoides (Centrarchidae)

“…Adult fish died after a 25 min bath exposure, but juvenile fish were able to recover. Although it is effective in vitro and in baths, levamisole administered in feed has not proven effective to control monogeneans (Hirazawa et al 2000, Schalch et al 2009). …”