Abstract:Honey bees (Apis mellifera) provide invaluable benefts for food production and maintenance of biodiversity of natural environments through pollination. They are widely spread across the world, being adapted to diferent climatic conditions. To survive the winter in cold temperate regions, honey bees developed diferent strategies including storage of honey and pollen, confnement of individuals during the winter, and an annual cycle of colony growth and reproduction.

ABSTRACT:This study aimed to detect mutations associated with pyrethroid resistance mechanism in different populations of Varroa destructor from Uruguay and Argentina with different degree of susceptibility to this family of acaricides. Bioassays were performed to evaluate the degree of susceptibility to flumethrin and tau-fuvalinate; then mites were studied in order to determine the presence or absence of the resistance-associated mutations by sequencing a region of the sodium channel gene.

ABSTRACT - Livestock production is being questioned for its greenhouse gas emissions. However, production systems influence multiple environmental variables and, in some cases, contribute to very valuable environmental services. This work summarizes information collected at 30 livestock commercial farms and four experimental fields of the Instituto Nacional de Investigación Agropecuaria (INIA) allocated throughout the Uruguayan territory. A total of 231 bird species were recorded, 42 of them identified as priority conservation species.

Introducción; En Uruguay existen 2717 establecimientos lecheros remitentes a planta, con una producción anual de 2026 millones de litros, de la cual se exportan un 70%; siendo vital mantener la calidad sanitaria de la leche con el fin de cumplir con las normativas internacionales y obtener un producto de buena calidad.

Abstract:Eared doves (Zenaida auriculata) are responsible for substantial losses in cereal and oil crops as well as in dairy and feedlot production in the southern cone of South America. Various strategies have been shown to be effective in reducing damage at the farm scale, but in some scenarios, it is necessary to also incorporate population control methods due to excessive bird population size. An alternative approach to reduce pest bird populations is the use of contraceptive methods, minimizing the impact on the environment and non-target populations.