A5057950042- Insect and Pesticide Research
- Plant and animal studies
- Insect and Arachnid Ecology and Behavior
- Bee Products Chemical Analysis
- Insect-Plant Interactions and Control
- Plant pathogens and resistance mechanisms
- Plant Parasitism and Resistance
- Plant and soil sciences
- Wheat and Barley Genetics and Pathology
- Agriculture, Plant Science, Crop Management
- Vector-borne infectious diseases
- Growth and nutrition in plants
- Berry genetics and cultivation research
- Plant Reproductive Biology
- Essential Oils and Antimicrobial Activity
- Mosquito-borne diseases and control
- Insect behavior and control techniques
- Insect Pest Control Strategies
- Scarabaeidae Beetle Taxonomy and Biogeography
- Plant Virus Research Studies
- Viral Infections and Vectors
- Agricultural and Food Production Studies
- Public Health and Social Inequalities
- Mycotoxins in Agriculture and Food
- Psidium guajava Extracts and Applications
Universidad de la República de Uruguay
2015-2025
RedCLARA
2024
Programa de Desarrollo de las Ciencias Básicas
2022
Universidad de Montevideo
2001-2020
Instituto de Investigaciones Biológicas Clemente Estable
2018
Honeybees Apis mellifera are important pollinators of wild plants and commercial crops. For more than a decade, high percentages honeybee colony losses have been reported worldwide. Nutritional stress due to habitat depletion, infection by different pests pathogens pesticide exposure has proposed as the major causes. In this study we analyzed how nutritional affects strength health. Two groups colonies were set in Eucalyptus grandis plantation at beginning flowering period (autumn),...
The honey bee ( Apis mellifera ) parasitic mite, Varroa destructor , is considered one of the main causes colony losses in European (EHB) populations around world. However, some EHB and Africanized (AHB) (derived from African subspecies A. m. scutellata that inhabit tropical subtropical regions Americas, have survived varroa mite infestations absence acaricide treatments. It conceivable to expect these populations, which been subjected natural selection over decades, would developed...
The ectoparasitic mite Varroa destructor is one of the main plagues honey bees Apis mellifera. Grooming behavior a resistance mechanism through which parasitized can dislodge mites by themselves (autogrooming) or action other (allogrooming). objective this study was to evaluate grooming in Italian (A. m. ligustica) and Africanized (hybrids A. scutellata) at individual, group, colony levels. Firstly, five behaviors were recorded observing individually placed on Petri dish after placing their...
In Uruguay, colonies of honey bees moving to Eucalyptus grandis plantation in autumn habitually become infected with the microsporidian Nosema ceranae , a parasite that attacks digestive system bees. Beekeepers attributed N. depopulation often occurs at end blooming period, and many use antibiotic fumagillin reduce level infection. The aim this study was compare effectiveness four different treatments determine how affects strength during winter season. treated July showed less spore load...
dida que transcurría el periodo de floración E. grandis hasta quedar únicamente polen esta especie; ii) presentó valores proteína bruta cercanos al 30%, pero fue disminuyendo paulatinamente alcanzar un valor inferior a 20% final la floración; iii) las colonias contaban inicialmente con reservas presentaron abejas mayor corporal pocos días después llegar forestación y menor infestación N. ceranae durante parte del iv) disponibilidad no incidió en V. destructor, área cría producción miel.El...
The ectoparasite Varroa destructor is the greatest biotic threat of honey bees Apis mellifera in vast regions world. Recently, study natural mite-resistant populations has gained much interest to understand action selection on mechanisms that limit mite population. In this study, components A. mellifera-V. relationship were thoroughly examined and compared resistant susceptible bee from two Uruguay. Mite-resistant have greater behavioral resistance (hygienic grooming behaviors) than bees. At...
Chalkbrood disease affects the larvae of honeybees Apis mellifera L. and is caused by fungus Ascosphaera apis. Infected die when they are stretched in cap cell suffer a gradual hardening that ends very hard structure (mummie). Several studies have demonstrated colonies express an efficient hygienic behaviour (uncapping subsequent removal dead brood) exhibit higher resistance to disease. However, it remains unclear whether advantage over less ones lies ability remove mummies or early...
Bumblebees (Bombus sp.) are eusocial insects with an annual life cycle whose use as pollinator of crops has gained great importance in modern agriculture. Several authors have found that resource Bombus species is usually based on the correlation between proboscis length bumblebees and corolla depth flowers. The aim this study was to determine atratus B. bellicosus, two Uruguayan bumblebees, verify exploitation testing cultivated species, red clover bird's foot trefoil. Bumblebee foraging...
SummaryNosema apis and Nosema ceranae are causative agents of Nosemosis in the honey bee Apis mellifera, although N. may cause a more virulent disease. Selection colonies with high tolerance to could be important for reducing problems caused by this pathogen. The aim present work was evaluate existence different degrees infection test if difference related immune response or vitellogenin expression. Healthy were relocated plantation Eucalyptusgrandisto favour natural ceranae. Fifteen thirty...
SummaryChalkbrood disease is a mycosis of honey bee (Apis mellifera) larvae caused by the heterothallic fungus Ascophaera apis. In infected colonies it often found that drone are more affected than worker and this difference attributed to higher probability chilling brood. Given great differences between larvae, however, would be expected find differential physiological resistance chalkbrood disease. Additionally, if hygienic behaviour adult bees (uncapping cells containing dead brood its...
En Uruguay el incremento sostenido de los cultivos soja (Glycine max) en últimos años ha perjudicado a la industria apícola al desplazar otros cultivos, por ejemplo las leguminosas forrajeras. Aunque es una especie autógama, algunos estudios señalan que producción semillas puede incrementarse con insectos polinizadores, especialmente abejas melíferas (Apis mellifera). El objetivo este estudio fue determinar si y incrementan un cultivo convencional. Para ello se instaló apiario 10 colmenas...