Toxicity of Usnic Acid from Cladonia substellata (Lichen) to embryos and adults of Biomphalaria glabrata.
Acta Trop
; 179: 39-43, 2018 Mar.
Article
en En
| MEDLINE
| ID: mdl-29183853
This study reports the molluscicidal activity of usnic acid isolated from Cladonia substellata Vanio (lichen) on embryos at various stages of development and in adult mollusks of Biomphalaria glabrata. The toxicity of usnic acid was also evaluated through Artemia salina larvae mortality. Usnic acid was extracted with diethyl ether, isolated, purified, and its structure confirmed by analyzing the spectra of proton nuclear magnetic resonance. LC90 for 24â¯h of exposure were 1.62, 4.45, 5.36, and 4.49⯵gâ¯mL-1 for blastula, gastrula, trocophore, and veliger embryonic stages, respectively, and 3.45⯵gâ¯mL-1 for adult snails; LC50 of usnic acid against A. salina was 2.46⯵gâ¯mL-1. LC90 assessed 7â¯days after exposure was 2.56⯵gâ¯mL-1 for adult mollusks. In conclusion, these findings demonstrate that under laboratory conditions usnic acid has teratogenic and molluscicide potential to control the aquatic snail B. glabrata and may prove to be a promising candidate in the search for new molluscicide agents, but further detailed studies on its molluscicidal effect and possible environmental effects are needed.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Benzofuranos
/
Biomphalaria
/
Embrión no Mamífero
/
Líquenes
Límite:
Animals
Idioma:
En
Revista:
Acta Trop
Año:
2018
Tipo del documento:
Article
País de afiliación:
Brasil
Pais de publicación:
Países Bajos