Resistencia natural de trece maderas mexicanas al ataque de termitas subterráneas

摘要: The natural resistance of heartwood from thirteen forest species (six Tropical Rain Forest and seven Pine-Oak Forest) to subterranean termites Heterotermes sp. attack, was evaluated by field microtests. Small blocks (2.5 × 2.5 5 cm) each were settled in 4 racks made a highly susceptible wood, following latin square arrangement. placed on the soil test area, tropical deciduous Biological Station "La Mancha", Veracruz, Mexico. total exposure period 15 months. Natural means termite damage, according visual-rating system with five categories. rain woods more resistant that pine-oak woods. For certain species, differences rank attack found between raks, possible causes this variability are discussed. classification was: Highly Resistant: Guarea chichon, Swietenia macrophylla ( Meliaceae); Quararibea funebris Bombacaceae). Pinus patula var. longepedunculata (Pinaceae) ; Lysiloma acapulcensis (Leguminosae).Moderately patula, aff. pseudostrobus Quercus acatenangensis (Fagaceae). Susceptible: None. crassifolia (Fagaceae); Alnus jorullensis (Betulaceae). In case teocote (Pinaceae); Schizolobium parahibum (Leguminosae) Licania platypus (Rosaceae) no conclusive results obtained.