POSTURES, LARVAE AND NATURAL ENEMIES DISTRIBUTION OF Oncideres impluciata (Germar, 1824) ( Col.; Cerambycidae)
DOI:
https://doi.org/10.5902/19805098264Keywords:
Twig girdler, Oncideres impluviata, biology, natural enemies, “bracatinga”.Abstract
The objective of this research was to observe the distribution, independent of the effect of each component were counted postures, healthy larvae, predated or parasitized larvae of the twig girdler Oncideres impluviata in branches of bracatinga (Mimosa scabrella Benth.). The survey was conducted during 1984/85 season in Almirante Tamandaré- Paraná. Annotations were taken for 10.0 cm branch segments beginning at the base of the branch. For the study about the distribution of the larvae and natural enemies the distance between branch base and healthy or parasitized larvae was located, empty gallery or predator was measured.
The results indicated that the larvae were concentrated after 10.0 cm of the branch base up to 40.0 cm and macimum concentration between 10.0 and 20.0 cm. Concentration of predator and parasites were not coincident. Parasites were concentrated in the 20.0 – 30.0 cm segment were as the predators were located in the 10.0 – 20.0 cm segment. It was concluded that the larvae were located in a position with the best surviving conditions. By other hand parasites and predators depend on intrinsic conditions of each species and in function of the ideal conditions of the development stage of the host or prey.
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References
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