Phytochemical and molluscicidal activity of Mikania glomerata Sprengel (Asteraceae) in different lifestages of Subulina octona (Mollusca, Subulinidade)

• Published in: Brazilian Archives of Biology and Technology Vol. 57; no. 2; pp. 261 - 268
• Main Authors: Souza, Bruna Aparecida de, Silva, Lidiane Cristina da, Chicarino, Evelyn Durço, Bessa, Elisabeth Cristina de Almeida
• Format: Journal Article
• Language: English
• Published: Instituto de Tecnologia do Paraná (Tecpar) 01-04-2014
• Subjects: control; guaco; Land snail; molluscicidal; toxicity
• ISSN: 1516-8913; 1678-4324; 1516-8913
• DOI: 10.1590/S1516-89132014000200015

The objective of this work was to study the molluscicidal activity of aqueous extract of Mikania glomerata on the land snail Subulina octona and to assess the changes caused on the snail's fecundity, growth, hatchability and the offspring produced after exposure. Eggs, newly hatched and 30 day old snails were exposed to the sublethal concentration of M. glomerata extract for 24 and 48 h and the observations were made for 120 days. The presence of tannins, flavonoids and saponins were shown by phytochemical tests. The extract reduced significantly the hatchability and the survival of the offspring hatched from the exposed eggs. The eggs exposed for 48 h presented lower hatchability rates. There was a reduction on survival and growth of newly hatched and 30-days old snails exposed to the extract. These results indicated that the aqueous extract of M. glomerata could be applied as an alternative molluscicide for the control of this snail species efficiently.