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Bosque (Valdivia)

versión On-line ISSN 0717-9200

Resumen

GOMEZ, CECILIA ANDREA. The relationship between accumulated degree-days and the seasonal flight of the European pine shoot moth at Esquel, Argentina. Bosque (Valdivia) [online]. 2003, vol.24, n.3, pp.57-63. ISSN 0717-9200.  http://dx.doi.org/10.4067/S0717-92002003000300006.

The relationship between accumulated degree-days (DD) and the emergence of males of the European pine shoot moth (Rhyacionia buoliana Den. & Schiff.) was determined using pheromone traps in a population of this species in a Pinus radiata plantation near Esquel City, Chubut province, at the Patagonian Andes region of Argentina. Traps were checked twice a week during three summer seasons from December 1999 to February 2002. On the second sampling season (2000 to 2001), 100 small branches with infected shoots were collected twice a week to estimate male and female emergence curves. Degree-days requirements (above -2.2 °C) for the seasonal flight of the males of this species were estimated. Predicted DD requirements were 252.26 DD for a 40% catch, 288.22 DD for a 50% catch and 434.53 DD for an 80% catch.

Palabras clave : Rhyacionia buoliana; degree-days; seasonal flight; male catches.

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