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The present study investigated the phytotherapeutic effects of Lippia origanoides, L. sidoides and Mentha piperita (100, 200, 300, 400, 500, 600 and 700 mg L–1) and the chemotherapeutics formalin (100, 200, 300, 400, 500, 600 and 700 mg L–1), potassium permanganate (1.5, 2.5, 3.5, 4 and 5 mg L–1), hydrogen peroxide (90, 180, 200, 250, 300 and 350 mg L–1) and salinity (0.5 and 10.0 g L–1) on Neobenedenia melleni infecting cultivated Mugi liza. The parasites were collected from 15 individuals of a first-generation broodstock of aquacultured mullets with average weights and lengths of 900.4 ± 96.99 g and 45.67 ± 1.50 cm, respectively. In vitro assessments were conducted in triplicate in experimental units consisting of polystyrene plates with flat bottoms, smooth surfaces and high edges containing 10 parasites in each well. For quantification of dead parasites and behavioral observations, treatments were monitored at different exposure times (5, 10 and 15 min) and then every 30 min. Treatments involving essential oils were effective for ectoparasite immobilization. The treatments with 100% effectiveness in the shortest time were 600 and 700 mg L–1 L. origanoides (1 min), followed by L. sidoides at 700 mg L–1 (4 min) and M. piperita at 700 mg L–1 (9 min). Formalin, hydrogen peroxide, potassium permanganate, and freshwater baths were also effective against N. melleni. The present study indicates that sanitary treatments with essential oils and freshwater baths for N. melleni infecting the Lebranche mullet M. liza are highly sustainable and pose a low risk to the environment. [ABSTRACT FROM AUTHOR]

Several routine aquaculture practices, such as densification, handling and transport, are considered potential stressors and can cause physiological alterations that compromise the animals' welfare and survival. Studies of plant‐based anaesthetic products have become a trend worldwide, mainly due to their potential uses and the variety of species that can provide suitable substances. In Brazil, the use of essential oils (EO) in fish farming for use in sedation and anaesthesia has already been explored. However, despite the excellent biological activity of the EO, as a result of their main compounds or due to the synergy between the active compounds, it is also necessary to investigate the adverse effects that they can cause and accordingly establish the appropriate dosage for their use. Sedative and anaesthetic properties of the EOs of at least 30 plant species have been described for native fish species reared in Brazil such as Colossoma macropomum, Rhamdia quelen, Brycon amazonicus, Lophiosilurus alexandri, Piaractus mesopotamicus, P. mesopotamicus × C. macropomum, Pseudoplatystoma reticulatum and Serrasalmus rhombeus. However, the mechanisms of action of the EOs need to be elucidated, as well as the undesirable side effects they may cause in fish. This review presents information on the use of EOs as anaesthetics and sedatives in native fish species farmed in Brazil, with emphasis on C. macropomum and, as a future perspective, the application of new technologies is emphasized to potentialize the biological activities of EOs, thus contributing with environment‐friendly natural alternatives for the promotion of sustainable aquaculture. [ABSTRACT FROM AUTHOR]

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Copyright of Revista Brasileira de Higiene e Sanidade Animal is the property of Associacao Cientifica dos Medicos Veterinarios do Ceara and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Brasileira de Higiene e Sanidade Animal is the property of Associacao Cientifica dos Medicos Veterinarios do Ceara and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Brazilian Journal of Agricultural Sciences / Revista Brasileira de Ciências Agrárias is the property of Universidade Federal Rural de Pernambuco and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Acta Scientiarum: Animal Sciences is the property of Universidade Estadual de Maringa and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)