Short‐term baths with essential oils of
 Lippia sidoides
 ,
 Ocimum gratissimum
 and
 Zingiber officinale
 influence blood parameters and survival of tambaqui (
 Colossoma macropomum
 ) after infection with
 Aeromonas hydrophila

Monteiro, Patrícia Castro; Oliveira, Maria Inês Braga de; Brandão, Franmir Rodrigues; Farias, Caio Francisco Santana; Majolo, Cláudia; Chaves, F. C. M.; Bizzo, H. R.; O’Sullivan, Fernanda Loureiro de Almeida; Martins, Maurício Laterça; Chagas, Edsandra Campos

doi:10.1111/are.15572

Cited by 1 publication

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“…Plants of the genus Lippia have been used for anesthetic induction in fish and in the treatment of diseases (Barriga et al, 2020;Brandão et al, 2021;Monteiro et al, 2021). Regarding the EO of L. origanoides, the mean lethal concentration at 96 h for tambaqui was established at 15.2 mg L -1 (Oliveira et al, 2018).…”

Section: Discussionmentioning

confidence: 99%

Acute toxicity of essential oils of Aloysia triphylla (L’Hér.) Britton, Lippia gracilis Schauer, and Piper aduncum L. in Colossoma macropomum (Cuvier, 1818)

Santos,

Andrade-Porto,

Oliveira

et al. 2023

Braz. J. Biol.

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The aim of this study was to determine the acute toxicity of the essential oils (EOs) of Aloysia triphylla, Lippia gracilis and Piper aduncum in juvenile tambaqui (Colossoma macropomum), and evaluate the possible histopathological alterations in their gills. For the acute toxicity tests, juvenile tambaqui (n=24/treatment) were distributed in six treatments with three replicates, which comprised the control and five EO concentrations of A. triphylla (60, 80, 100, 120 and 140 mg L-1), L. gracilis (35, 40, 45, 50 and 55 mg L-1) and P. aduncum (42.5, 45, 47.5, 50 and 52.5 mg L-1), with an exposure period of 4 h. The mortality rate and severity of damage to the tambaqui gills were proportional to the increase in the concentration of the EO, with LC50-4 h values estimated at 109.57 mg L -1 for A. triphylla, 41.63 mg L -1 for L. gracilis and 48.17 mg L -1 for P. aduncum. The main morphological damages observed in the gills of the tambaqui exposed to the three EOs, were Grade I: hypertrophy and hyperplasia of lamellar epithelial cells, lamellar fusion, epithelial detachment, capillary dilation and constriction, proliferation of chloride cells and mucosal cells and edema; in low frequency Grade II damage as epithelial rupture and lamellar aneurysm. Necrosis (Grade III damage) was observed only in gill lamellae exposed to P. aduncum EO (47.5, 50.0 and 52.5 mg L-1). Concentrations of EOs below LC50-4 h can be used sparingly, for short periods of exposure for the treatment of diseases in tambaqui breeding.

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Section: Discussionmentioning

confidence: 99%