ATRAYENTES QUÍMICOS EN ESCARABAJOS DESCORTEZADORES Dendroctonus mexicanus Y D. adjunctus (Col: Scolytidae)

Abstract

The Instituto Nacional de Investigaciones Forestales y Agropecuarias (I NIF AP), on recent years has been directed hard efforts to develop ways to bark beetle plagues control, that includes integration methods and insecticides tests.
On january and june during 1988, seVeral studies were made on Dendroctonus mexicanus and D. adjunctus with pheromones. The first was located on Gomez Farias county and the second on the Nevado de Colima national park, both places in Jalisco state.
The present work has been realized with the principal objetive to determina te the different pheromones effect on the bark beetle aggregation, that cause severe dammages around the country.
There were settled eight funnel "lindgren" traps on emergent bark beetle populations with the commercial availables pheromones such as Dendroctonus fronta/is, D. brevicomis, D. ponderosae and Ips typographus.
The results, expressed here, are brtssed on the pheromona attraction caused by aplication on trees with emergent scarabe plagues, and have the possibilitie to concentrate the plague in flying insects traps specially designed. This situation provoke that the scarab number at last became no dangerous for the tree resistance.
The pheromone with hlghest average attraction by each trap was frontalina + alfa-pineno.
According with data registers of attracted insects using frontalina since the capture began on the fourth week, represents 85% of total population captured in accumulative form.