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Now showing items 1-5 of 5

    • Behavior of varroa mites in worker brood cells of Africanized honey bees 

      Fallas, Natalia; Zamora Fallas, Luis Gabriel; Van Veen, Johan; Sánchez Chaves, Luis; Calderon, Rafael (Experimental and Applied Acarology/ Springer, 2019-04-19)
      El ácaro ectoparásito Varroa destructor es actualmente la plaga más importante de la abeja melífera, Apis mellifera. Dado que la reproducción del ácaro tiene lugar dentro de la celda sellada, la observación directa de la ...

    • Presence of Nosema ceranae in Africanized honey bee colonies in Costa Rica 

      Sánchez Chaves, Luis; Calderón, Rafael; Yanez, Orlando; Fallas, Natalia (Journal of Apicultural Research, 2015-03-25)
      Nosemosis is a severe disease caused by the microsporidian Nosema sp. affecting adult honey bees (Apis mellifera) (Bailey and Ball, 1991). Nosema spores infect the epithelial layer of the ventriculus and midgut of adult ...

    • Revisión sobre la presencia del Pequeño Escarabajo de la Colmena, Aethina tumida (Coleoptera: Nitidulidae) infestando colonias de abejas nativas sin aguijón (Apidae: Meliponini) 

      Sánchez-Chaves, Luis A; Calderon, Rafael (Ciencias Veterinarias, Universidad Nacional de Costa Rica, 2022-12-07)
      La crianza y manejo de las abejas nativas sin aguijón, se conoce como “meliponicultura”, actividad ancestral de importancia ambiental y socioeconómica. En Costa Rica, se reportan más de 50 especies de ...

    • Senna cobanensis poisoning in zebu calves: First case report 

      Vargas Muñoz, Carolina; Vargas-Muñoz, Mariana; Alfaro-Alarcón, Alejandro; Sánchez-Chaves, Luis; Alpízar-Solís, Carlos; Luna-Tortós, Carlos (Ciencias Veterinarias, UNA, 2022-12-27)
      Plants of the genus Senna belong to the Fabaceae family and globally they are distributed in tropical and subtropical areas. Some species of this genus contain products of secondary metabolism, which have been associated ...

    • Stingless Bees in applied pollination: practice and perspectives 

      Sánchez Chaves, Luis; Hofstede, Frouke; Slaa, Ester Judith; Malagodi-Braga, Kátia (Apidologie, 2006-06-22)
      At present, numbers of both wild and managed bee colonies are declining rapidly, causing global concern for pollination services. Stingless bees play an important ecological role as pollinators of many wild plant species ...