Morphological description of Amblyomma brasiliense Aragao, 1908 (Acari: Ixodidae) larvae and nymphs

Autor(es)

Sanches, Gustavo Seron ; Bechara, Gervasio Henrique ; Camargo-Mathias, Maria I.

• Tipo de documento: Artigo Científico
• Fonte: REVISTA BRASILEIRA DE PARASITOLOGIA VETERINARIA; v. 18, n. 3, p. 7-pg., 2009-07-01.

Resumo

The immature stages of Neotropical ticks are poorly known and in many cases have not been described. This work presents a morphological description of Amblyomma brasiliense larvae (F1) and a redescription of nymphs (H). A. brasiliense is reported as one of the most aggressive ticks to humans in Brazil. Immature ticks obtained from a laboratory colony initiated from adult specimens collected in the Parque Estadual Intervales (24 degrees 18' S and 48 degrees 24' W), Sao Paulo, Brazil, were analyzed under scanning electron microscope, and also under light and stereoscopic microscopes. A. brasiliense larvae present basis capituli rectangular; short palpi; rounded idiosoma; coxa I with two spurs, the external one being longer than the internal one; and coxae II and III each with one short spur. Nymphs present basis capituli rectangular with a sharp pointed cornua; oval idiosoma with scutum reaching coxa III; coxa I with two evident spurs, the external one being longer than the internal one; coxae II-III each with one short spur; and coxa IV with a very short spur and chitinous tubercles on internal surface of posterior border of idiosoma. These morphological features, in association with chaetotaxy and porotaxy, should make possible the identification of immature Amblyomma ticks. (AU)

• Processo FAPESP: 07/59020-0 - Estudo da morfo-histologia externa e interna (sistemas: salivar, produtivo e digestório) de três espécies de carrapatos de importância médica veterinária (Acari - Ixodidae)
• Beneficiário: Maria Izabel Souza Camargo
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 07/52046-3 - Caracterização da morfologia externa e interna do carrapato Amblyomma brasiliense Aragão, 1908 (acari:ixodidae)
• Beneficiário: Gustavo Seron Sanches
• Modalidade de apoio: Bolsas no Brasil - Mestrado