| Revista: | Revista brasileira de entomologia |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000303181 |
| ISSN: | 0085-5626 |
| Autores: | Butignol, C. A1 Pedrosa-Macedo, J. H2 |
| Instituciones: | 1Universidade Federal de Santa Catarina, Departamento de Fitotecnia, Florianopolis, Santa Catarina. Brasil 2Universidade Federal do Parana, Departamento de Ciencias Florestais, Curitiba, Parana. Brasil |
| Año: | 2003 |
| Volumen: | 47 |
| Número: | 1 |
| Paginación: | 1-7 |
| País: | Brasil |
| Idioma: | Portugués |
| Tipo de documento: | Artículo |
| Enfoque: | Analítico, descriptivo |
| Resumen en inglés | Biology of the leaf gall inducer Neotrioza tavaresi Crawford, 1925 (Hemiptera, Psyllidae) on strawberry guava tree (Psidium cattleianum). A field study was conducted in Curitiba region, State of Paraná, southern Brazil, to describe the life cycle of Neotrioza tavaresi Crawford, 1925, a leaf galling insect in strawberry guava trees (Psidium cattleianum). Three cycles were observed (1997, 1998, 1999) during regular field trips and the insects were observed in Piraquara municipality, where 15 samples with 50 infested leaves were sampled in the 1997-98 cycle. Galls were dissected for detailed studies. Neotrioza tavaresi has a univoltine cycle in which adult individuals were found inside the galls from August onwards. The sexually mature insects with sex ratio 1, emerged from the galls after their dehiscence caused by feeding of the adult insects on the gall walls. Adult emergence started in early October and ended by early December, with its peak in November. Copulation took place as soon as adults exit the gall and egg laying started the next day. Females had more than 100 ovarioles containing 218.7±44.7 (n=50) fully formed eggs. This indicated the short sexual adult life-span (aprox. 5-7 days) of the species, also characterized by a concentrated oviposition. Adult individuals fed and laid their eggs on younger shoots of the plant. The bottoms of the yellowish eggs were inserted into the leaf tissue, mainly on its adaxial edge (78.1%). The nymphs hatched and, as they fed on the adaxial side of expanding leaves, modified the cell growt |
| Disciplinas: | Agrociencias, Biología |
| Palabras clave: | Fitopatología, Frutales, Insectos, Insectos agalleros, Ciclo de vida, Enemigos naturales, Neotrioza tavaresi, Hemiptera, Psidium cattleianum |
| Keyword: | Agricultural sciences, Biology, Fruit trees, Phytopathology, Insects, Gall insects, Life cycle, Natural enemies, Neotrioza tavaresi, Hemiptera, Psidium cattleianum |
| Texto completo: | Texto completo (Ver HTML) |
