title: Acaricidal activity of Calea serrata (Asteraceae) on Boophilus microplus and Rhipicephalus sanguineus.
abstract: Calea serrata (Asteraceae) is an endemic Southern Brazilian plant species used for religious and medicinal purposes. Previous study revealed the presence of chromenes, a class of natural compounds that possess insecticidal properties. This study reports the effect of the hexane extract from the aerial parts of this plant on egg hatchability, egg production and mortality rates of newly hatched larvae of the cattle tick Boophilus microplus. Larvae of Rhipicephalus sanguineus, the brown dog tick, received the same treatment. The extract was toxic to the eggs of B. microplus and to the larvae of both B. microplus and R. sanguineus.
authors.affiliation: Faculdade de Veterinária, Universidade Federal do Rio Grande do Sul, Av. Bento, Gonçalves 9090, 90540-000 Porto Alegre, RS, Brazil.
authors.forename: Vera Lucia Sardá
authors.initials: VL
authors.lastname: Ribeiro
authors.forename: Cesar
authors.initials: C
authors.lastname: Avancini
authors.forename: Karla
authors.initials: K
authors.lastname: Gonçalves
authors.forename: Eduardo
authors.initials: E
authors.lastname: Toigo
authors.forename: Gilsane
authors.initials: G
authors.lastname: von Poser
mesh_terms: D000818:Animals; D019659:Asteraceae / Q000737:chemistry*; D005260:Female; D007306:Insecticides / Q000633:toxicity*; D007814:Larva / Q000187:drug effects; D010058:Oviposition / Q000187:drug effects; D010936:Plant Extracts / Q000633:toxicity*; D018515:Plant Leaves / Q000737:chemistry; D018547:Plant Stems / Q000737:chemistry; D048494:Rhipicephalus / Q000187:drug effects*; D048508:Rhipicephalus sanguineus / Q000187:drug effects; D015053:Zygote / Q000187:drug effects
chemical_list: D007306:Insecticides; D010936:Plant Extracts