Distribution, Survival and Dispersal Capability of Two Invasive Cerambycidae Species in Central Argentina

GRILLI MARIANO PABLO; FACHINETTI ROMINA; PEDEMONTE MARÍA LAURA

San Carlos de Bariloche

Congreso; A global perspective on the ecology and management of bark and wood boring insects. IUFRO; 2015

IUFRO-INTA-CONICET-UCAR

In 2006 two invasive species of Cerambycidae were described for the first time in the main pine production area of Córdoba Province: Arhopalus rusticus and A. syriacus. At least, one of these species is an important quarantine pest due to its ability of carrying the pine wood nematode Bursaphelenchus xylophilus. The objective of this work was to generate the baseline knowledge of these two species for the development of decision-making tools for future management. We deployed interception kairomone traps in the study area. Groups of pines were debilitated in order to make them suitable for Arhopalus sp. attack to obtain adults for rearing. Dispersal potential was measured using flying mills. Our results showed that A. rusticus was present in all the pine plantations of Córdoba province with a wider distribution than A. syriacus. Both species dispersed at the end of the spring/beginning of the summer. In flying mills, females of A. rusticus flew almost twice the distance than males (9282 m and 5892 m, respectively). Arhopalus syriacus completed its development between 297 and 378 days. The first larval instar showed the highest mortality rate, with a 60 % of mortality.