Toxic Activity of Pyrethroids in Lutzomyia longipalpis (Diptera: Psychodidae) from Magdalena River Basin, Colombia
| Autor: | Erika Santamaria, Catalina Marceló-Díaz |
|---|---|
| Jazyk: | English<br />Spanish; Castilian |
| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | Acta Biológica Colombiana, Vol 24, Iss 2 (2019) |
| Druh dokumentu: | article |
| ISSN: | 0120-548X 1900-1649 |
| DOI: | 10.15446/abc.v24n2.74570 |
| Popis: | The study aimed to determine the toxicity of lambda-cyhalothrin, alpha-cypermethrin, and deltamethrin in L. longipalpis, through concentration-mortality bioassays. The test here was performed following WHO guidelines, but instead of using exposure WHO recipients and impregnated papers, 250 ml Wheaton glass bottles treated with 1 ml of insecticide solution were used. Batches of ten females of L. longipalpis were exposed to five concentrations of each pyrethroid that caused between 5 and 100 % mortality in this species. After 1 h of exposure, the females were transferred to observation recipients, and mortality was recorded 24 h later. The lethal concentrations (μg/ml) that killed 50 and 95 % (LC50 and LC95) of the exposed L. longipalpis females were 0.05 and 0.86 for lambda-cyhalothrin, 0.24 and 3.62 for alpha-cypermethrin and 0.53 and 4.72 for deltamethrin. Based on the LC50 obtained, lambda-cyhalothrin is the most toxic pyrethroid for L. longipalpis, followed by alpha-cypermethrin and deltamethrin. It is expected that these data may be useful in studies on the effects of sub-lethal concentrations of the three pyrethroids on the behavior of L. longipalpis and studies on the vector susceptibility to these pyrethroids. |
| Databáze: | Directory of Open Access Journals |
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