Fecha/hora: 03/06/2024 16:44:57

Biblioteca(s): 	INIA Las Brujas.	
Fecha corriente: 	15/10/2014	
Fecha de la última actualización: 	31/10/2019	
Autoria: 	INVERNIZZI, C.; RIVAS, F.; BETTUCCI, L.	
Afiliación: 	FEDERICO RIVAS FRANCO, INIA (Instituto Nacional de Investigación Agropecuaria), Uruguay.	
Título: 	Resistance to Chalkbrood Disease in Apis mellifera L. (Hymenoptera: Apidae) Colonies with Different Hygienic Behaviour.	
Año de publicación: 	2011	
Fuente/Imprenta: 	Neotropical Entomology, 2011, v.40, no.1, p.28-34.	
ISSN: 	1519-566X	
DOI: 	10.1590/S1519-566X2011000100004	
Idioma: 	Inglés	
Notas: 	Article history: Received 03 August 2009 / Accepted 10 June 2010.	
Contenido: 	ABSTRACT.

Chalkbrood disease affects the larvae of honeybees Apis mellifera L. and is caused by the fungus Ascosphaera apis. Infected larvae die when they are stretched in the cap cell and suffer a gradual hardening that ends in a very hard structure (mummie). Several studies have demonstrated that colonies that express an efficient hygienic behaviour (uncapping of cell and subsequent removal of dead brood) exhibit a higher resistance to the disease. However, it remains unclear whether the advantage of hygienic colonies over less hygienic ones lies in the ability to remove mummies or in the early detection of infected larvae and its cannibalization before they harden. To elucidate this aspect, the hygienic behaviour of 24 colonies, which were subsequently provided with pollen cakes containig a. apis, was evaluated. The number of mummies and the number of partially cannibalized and whole larvae in uncapped cells were recorded. The most hygienic colonies controlled the disease better. These colonies also had a higher tendency to uncap cells that contained infected larvae and cannibalize them. The presence of a. apis in partially cannibalized and whole larvae in uncapped cells indicate that the advantage of hygienic colonies over less hygienic ones lies in the early detection of infected larvae death and their quick removal from the cell before they become mummies. 
© 2011 Sociedade Entomológica do Brasil.	
Palabras-Clave: 	Ascosphaera apis; Honey bee; Larva; Selection.	
Thesagro: 	ABEJA MELÍFERA; MIEL DE ABEJA.	
Categoría del tema: 	A50 Investigación agraria	
Registro original: 	INIA Las Brujas (LB)	
Ejemplares: 	LB - (100187-1) - PXI - AP - DD - PP/NEOTROPICAL ENTOMOLOGY/2011 -  -  - DIS