| Autor: |
Jake A. Eaton, John J. Brown, Neal T. Kittelson, Eugene R. Hannon |
| Rok vydání: |
2008 |
| Předmět: |
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| Zdroj: |
Journal of Economic Entomology. 101:199-205 |
| ISSN: |
0022-0493 |
| DOI: |
10.1603/0022-0493(2008)101[199:shpcfs]2.0.co;2 |
| Popis: |
The poplar-and-willow borer, Cryptorhynchus lapathi (L.) (Coleoptera: Curculionidae), is a wood-boring pest of economic importance in irrigated hybrid poplar (Populus spp.) farms in eastern Washington and Oregon. There is no practical insecticide control tactic against either the larval or adult stage of C. lapathi. To assess variability in C. lapathi toward clone preference, we initiated a no-choice study on 180 caged trees that consisted of five clones in a randomized complete block design. C. lapathi was significantly more successful at establishing a population in two clones with Populus trichocarpa × P. deltoides (TxD) parentage (♀ × ♂) than in either of two clones with P. deltoides × P. nigra (DxN) parentage (♀ × ♂), or a single clone with P. deltoides × P. maximowiczii (DxM) parentage (♀ × ♂). There were no significant differences in the rate of weevil development among infested clones, with the exception of DxM trees. Larvae in DxM clones developed on average to the fourth size grouping a... |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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