Ultrastructure of the synganglion in the larvae and nymphs of tick Rhipicephalus sanguineus (Latreille, 1806) (Acari: Ixodidae)

Autor(es)

Roma, Gislaine Cristina ^[1] ; Camargo Mathias, Maria Izabel ^[1] ; Nunes, Pablo Henrique ^[1] ; Bechara, Gervasio Henrique ^[1]

Afiliação do(s) autor(es)

^[1] UNESP Univ Estadual Paulista, Inst Biociencias, Dept Biol, Rio Claro, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: INTERNATIONAL JOURNAL OF ACAROLOGY; v. 40, n. 3, p. 207-213, APR 2014.
• Citações Web of Science: 2

Resumo

This study performs the ultrastructural description of the central nervous system (CNS) of Rhipicephalus sanguineus larvae and nymphs. The CNS is surrounded by the neural lamella, a thin acellular sheath. Just below, the perineurium is found, formed by glial cells, with irregular membranes, elongated nucleus and few organelles in the cytoplasm. Internally, the synganglion is divided into an outer cortex, containing the cellular bodies of the neural cells and an inner neuropile. The neural cells can be classified into two types. Type I is most frequently observed, presenting spherical or oval shape and a large nucleus occupying most part of the cytoplasm, in which few organelles are observed. Type II cells are polygonal, presenting a great cytoplasmic volume and the nucleus dislocated towards the cellular periphery. The subperineurium is located between the cortex and the neuropile. The neuropile is the innermost region of the synganglion, the most complex one and formed by extensions of the neural cells. This study improves our understanding of the physiology of ticks, with the aim of improving current control strategies. (AU)

• Processo FAPESP: 11/10427-6 - Auxílio técnico para manutenção de colônias de carrapatos e processamento de técnicas laboratoriais
• Beneficiário: Mateus Ribeiro Mota
• Modalidade de apoio: Bolsas no Brasil - Programa Capacitação - Treinamento Técnico
• Processo FAPESP: 11/06865-8 - Estudo morfofisiológico comparativo do sistema nervoso de larvas, ninfas e adultos de carrapatos Rhipicephalus sanguineus (Latreille, 1806) (Acari: Ixodidae) e avaliação celular do singânglio de fêmeas semi-ingurgitadas expostas à permetrina e ao óleo de andiroba
• Beneficiário: Gislaine Cristina Roma
• Modalidade de apoio: Bolsas no Brasil - Jovens Pesquisadores
• Processo FAPESP: 10/51942-8 - Estudo morfofisiológico comparativo do sistema nervoso de larvas, ninfas e adultos de carrapatos Rhipicephalus sanguineus (Acari: Ixodidae) e avaliação celular do singânglio de fêmeas semi-ingurgitadas expostas à permetrina e ao óleo de andiroba (Carapa guianensis)
• Beneficiário: Gislaine Cristina Roma
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores