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FENILI,R.; MENDES,C. J.; MIQUELLUTI,D. J.; MARIANO-DA-SILVA,S.; XAVIER,Y.; RIBAS,H. S.; FURLAN,G.. |
This work aimed to evaluate the Deladenus siricidicola, Bedding (Neotylenchidae)parasitism in adults Sirex noctilio, Fabricius, 1793 (Hymenoptera: Siricidae). Timber was sampled by cutting out pieces of 0.80 m in length in Sirex noctilio attacked and Deladenus siricidicola inoculated Pinus taeda. Longs were 15-20 cm in diameter, according to the tree age. Samples were packed in gauze-cages, for daily observations, till S. noctilio adults emergence. The emerged insects were transported, in plastic containers to the laboratory, where they were sectioned and dissected under stereoscopic microscopy to observ the nematode occurrence. From the initially proposed ten units, nine of them were evaluated in a total of 1,810 emerged adult insects, being 1,441 males... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sirex noctilio; Deladenus siricidicola; Parasitism; Biological control. |
Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71082000000400020 |
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Penteado, Susete do Rocio Chiarello; Oliveira, Edilson Batista de; Iede, Edson Tadeu. |
The woodwasp Sirex noctilio Fabricius (Hymenoptera: Siricidae) was introduced in Brazil in 1988 and became the main pest in pine plantations. It has spread to about 1.000.000 ha, at different population levels, in the states of Rio Grande do Sul, Santa Catarina, Paraná, São Paulo and Minas Gerais. Control is done mainly by using a nematode, Deladenus siricidicola Bedding (Nematoda: Neothylenchidae). The evaluation of the efficiency of natural enemies has been difficult because there are no appropriate sampling systems. This study tested a hierarchical sampling system to define the sample size to monitor the S. noctilio population and the efficiency of their natural enemies, which was found to be perfectly adequate. |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Recursos Florestais Proteção Florestal hierarchical sampling Sirex noctilio control nematode parasite Amostragem hierárquica; Sirex noctilio; Nematoide. |
Ano: 2016 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/788 |
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