El objetivo de este estudio fue caracterizar los patrones de crecimiento de los folículos y del cuerpo lúteo (CL) y la concentración de progesterona durante el ciclo estral en vacas adultas con diferente grado de fertilidad. Se utilizaron 11 vacas Hereford (fértiles n = 5; subfértiles n = 6) de 89 meses de edad.

El objetivo de este estudio fue caracterizar los patrones de crecimiento de los folículos y del cuerpo lúteo (CL) y la concentración de progesterona durante el ciclo estral en vacas adultas con diferente grado de fertilidad. Se utilizaron 11 vacas Hereford (fértiles n = 5; subfértiles n = 6) de 89 meses de edad.

The bronze bug is a major pest of Eucalyptus tree plantations worldwide. The fi rst outbreak of this species in Uruguay was reported in summer 2008. Soon after that, a monitoring network was installed throughout the country by using yellow rectangular sticky traps (10 cm × 12.5 cm) attached to a tree trunk at 1.80 m and replaced monthly. Five to nine traps were established in more than forty monitoring stations on forestry plantations covering different ages, densities, and Eucalyptus species. Here results are shown for 4 years of monitoring in two permanent monitoring stations.

Commercialization of wood packing and plant materials, together with climate change, has led to an increased dispersion of pests and diseases worldwide, causing the colonization of new areas by bark and ambrosia beetles. In this context, it becomes necessary to work toward identifying new invasive species of scolytids. A dramatic increase in tree plantations began in Uruguay in the 1990s after a new forestry law went into force in the country, leading to more than 1 million ha forested with exotic trees (mostly Eucalyptus spp. and Pinus spp.) to date.