Gross and microscopic observations on the lingual structure of the franciscana (Pontoporia blainvillei-gervais and d'orbigny, 1844)

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Amblyomma triste (Koch, 1844) (Acari : Ixodidae): Morphological description of the ovary and of vitellogenesis

The present study presents the morphology, histology, and the dynamics of vitellogenesis in females of the tick Amblyomma triste. The ovary in this species is of the panoistic type, therefore it lacks nurse cells. It is composed of a layer of epithelial cells that outwardly form the wall of the ovary, but also originate the pedicel, the structure that attaches the oocytes to its external margin, as well the oocytes themselves. In Amblyomma triste, the oocytes develop in four synchronic stages, which differs from the process in other tick species. The classification of the stages of the oocytes was carried out based on the presence of four morphologic characteristics: cytoplasm appearance; site of the germ vesicle; presence, quantity, and constitution of the yolk granules and presence of chorium. (c) 2006 Elsevier B.V. All rights reserved.

Morphological records of oocyte maturation in the parthenogenetic tick Amblyomma rotundatum Koch, 1844 (Acari: Ixodidae)

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Informe del Octavo Período de Sesiones del Comité de Desarrollo y Cooperación del Caribe, Puerto Príncipe, Haití, 6 al 12 de junio de 1984 = Report of the Eighth Session of the Caribbean Development and Co-operation Committee, Port-au-Prince, Haiti, 6-12 June 1984

Presenta la organizacion de la reunion, el resumen de los debates, conclusiones y recomendaciones sobre los temas: ejecucion del programa de trabajo del CDCC desde el 7o periodo de sesiones; proyecto de programa de trabajo para el bienio 1986-1987; accion sobre resoluciones aprobadas en el 6o y 7o periodo de sesiones del CDCC; resoluciones de CEPAL que tienen consecuencias para el CDCC; y admision de las Islas Virgenes Britanicas y las Islas Virgenes de Estados Unidos como miembros asociados del CDCC.