SUMMARYIn Uruguay, many beekeepers transport their colonies to Eucalyptus grandis plantations at the end of the summer and autumn, obtaining important honey harvests. However, at the end of the flowering period the colonies become extremely weakened undergoing high levels of mortality. Nutritional and health problems could explain the weakening of colonies. In order to find out the causes for this weakening, colonies of the same size were taken to an E. grandis plantation, split up in three groups differentiated by the availability of pollen. Throughout the flowering period we registered: the botanical origins and crude protein content of the incoming pollen, the body protein of the bees, the infection by Nosema ceranae and the infestation of Varroa destructor, the brood area and the production of honey. The most important findings were: i) the sustained decline in botanical diversity of pollen as the flowering period of E. grandis advanced until only pollen from this species remained; ii) pollen from E. grandis presented crude protein values close to 30%, but these gradually diminished reaching values lower than 20% towards the end of the flowering period; iii) those colonies which initially counted on pollen reserves presented bees with higher body protein a few days after settling in the plantation and lower levels of infection with N. ceranae during most of the flowering period; iv) pollen availability did not affect levels of infection by V. destructor, size of the brood area or honey production. Bee's nutritional deficit during E. grandis flowering could generate adequate conditions for the multiplication of N. ceranae. At the end of the Eucalyptus' flowering period colonies presented on average more than 90% of foraging workers infected with N. ceranae and 12% infection of adult bees with V. destructor. Incidence of both pathogens in weakened bees could explain colony losses. RESUMENEn Uruguay muchos apicultores trasladan sus colonias a las forestaciones de Eucalyptus grandis al final del verano y en otoño obteniendo importantes cosechas de miel. Sin embargo, cuando finaliza la floración las colonias se encuentran muy debilitadas, sobreviniendo una elevada mortalidad. Problemas nutricionales y sanitarios podrían explicar el debilitamiento de las colonias. Para averiguar las causas del debilitamiento se llevaron colonias de igual tamaño a una forestación de E. grandis, separadas en tres grupos diferenciados por la disponibilidad de polen. A lo largo del periodo de floración se registró: el origen botánico y el contenido de proteína cruda del polen que ingresaba en las colmenas, la proteína corporal de las abejas, la infección por Nosema ceranae y la infestación por Varroa destructor, el área de cría y la producción de miel. Los resultados más importantes hallados fueron: i) la sostenida disminución de la diversidad botánica del polen a meArchivos de zootecnia vol. 60, núm. 232, p. 1304. INVERNIZZI, SANTOS, GARCÍA, DANERS, DI LANDRO, SAADOUN AND CABRERA dida que transcurría el periodo de floración de E. ...

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Objective: To analyze maternal mortality in the Maternidad “Concepción Palacios” Hospital between January 2014 and December 2020. Methods: A descriptive, analytical, and retrospective study of maternal deaths occurred in the 2013-2018 period was carried out. Results: There were 73 maternal deaths, and a ratio of 135.96 per 100,000 live births. Direct maternal deaths were 60, 82.19% of the population and 13 indirect maternal deaths, 17.80%. The causes of direct maternal death were hypertensive disorders of pregnancy 48.33%, sepsis 26.66%, and obstetric hemorrhage 23.33%, with a 1: 3 ratios of maternal deaths at extreme ages of reproductive life. Conclusions: The maternal death ratio in the Maternidad “Concepción Palacios” Hospital duplicates the goals of the sustainable development goals of the 2016-2030 agenda; there is an increase in hypertensive disorders of pregnancy as a direct cause of maternal mortality. Primiparity, the absence or lack of data from prenatal control, cesarean sections, and admission-death time of less than 24 hours prevailed. Recommendations: Advances are needed in sexual and reproductive health education, education and training of health personnel in extreme maternal morbidity, analysis by theoretical premises identifying the social determinants of maternal mortality and the health reality related to its management, implementing preventive public policies with specific care guidelines. Keywords: Maternal mortality, Hypertensive disorders of pregnancy, Maternal sepsis, Obstetric hemorrhage.