Unraveling Honey Bee–<i>Varroa destructor</i> Interaction: Multiple Factors Involved in Differential Resistance between Two Uruguayan Populations

The ectoparasite <i>Varroa destructor</i> is the greatest biotic threat of honey bees <i>Apis mellifera</i> in vast regions of the world. Recently, the study of natural mite-resistant populations has gained much interest to understand the action of natural selection on the me...

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Main Authors: Yamandú Mendoza, Ivanna H. Tomasco, Karina Antúnez, Loreley Castelli, Belén Branchiccela, Estela Santos, Ciro Invernizzi
Format: Article
Language:English
Published: MDPI AG 2020-08-01
Series:Veterinary Sciences
Subjects:
Online Access:https://www.mdpi.com/2306-7381/7/3/116
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author Yamandú Mendoza
Ivanna H. Tomasco
Karina Antúnez
Loreley Castelli
Belén Branchiccela
Estela Santos
Ciro Invernizzi
author_facet Yamandú Mendoza
Ivanna H. Tomasco
Karina Antúnez
Loreley Castelli
Belén Branchiccela
Estela Santos
Ciro Invernizzi
author_sort Yamandú Mendoza
collection DOAJ
description The ectoparasite <i>Varroa destructor</i> is the greatest biotic threat of honey bees <i>Apis mellifera</i> in vast regions of the world. Recently, the study of natural mite-resistant populations has gained much interest to understand the action of natural selection on the mechanisms that limit the mite population. In this study, the components of the <i>A. mellifera</i>–<i>V. destructor</i> relationship were thoroughly examined and compared in resistant and susceptible honey bee populations from two regions of Uruguay. Mite-resistant honey bees have greater behavioral resistance (hygienic and grooming behaviors) than susceptible honey bees. At the end of the summer, resistant honey bees had fewer mites and a lower deformed wing virus (DWV) viral load than susceptible honey bees. DWV variant A was the only detected variant in honey bees and mites. Molecular analysis by Short Tandem Repeat showed that resistant honey bees were Africanized (<i>A. m. scutellata</i> hybrids), whereas susceptible honey bees were closer to European subspecies. Furthermore, significant genetic differentiation was also found between the mite populations. The obtained results show that the natural resistance of honey bees to <i>V. destructor</i> in Uruguay depends on several factors and that the genetic variants of both organisms can play a relevant role.
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spelling doaj.art-a334e470dc5144918d1e2afea48106562023-11-20T10:43:56ZengMDPI AGVeterinary Sciences2306-73812020-08-017311610.3390/vetsci7030116Unraveling Honey Bee–<i>Varroa destructor</i> Interaction: Multiple Factors Involved in Differential Resistance between Two Uruguayan PopulationsYamandú Mendoza0Ivanna H. Tomasco1Karina Antúnez2Loreley Castelli3Belén Branchiccela4Estela Santos5Ciro Invernizzi6Sección Etología, Facultad de Ciencias, Universidad de la República, Iguá 4225, Montevideo 11400, UruguayLaboratorio de Evolución, Facultad de Ciencias, Universidad de la República, Iguá 4225, Montevideo 11400, UruguayDepartamento de Microbiología, Instituto de Investigaciones Biológicas Clemente Estable, Av. Italia 3318, Montevideo 11600, UruguayDepartamento de Microbiología, Instituto de Investigaciones Biológicas Clemente Estable, Av. Italia 3318, Montevideo 11600, UruguaySección Apicultura, Programa de Producción Familiar, Instituto Nacional de Investigación Agropecuaria La Estanzuela, Ruta 50 km 11, Colonia 70002, UruguaySección Etología, Facultad de Ciencias, Universidad de la República, Iguá 4225, Montevideo 11400, UruguaySección Etología, Facultad de Ciencias, Universidad de la República, Iguá 4225, Montevideo 11400, UruguayThe ectoparasite <i>Varroa destructor</i> is the greatest biotic threat of honey bees <i>Apis mellifera</i> in vast regions of the world. Recently, the study of natural mite-resistant populations has gained much interest to understand the action of natural selection on the mechanisms that limit the mite population. In this study, the components of the <i>A. mellifera</i>–<i>V. destructor</i> relationship were thoroughly examined and compared in resistant and susceptible honey bee populations from two regions of Uruguay. Mite-resistant honey bees have greater behavioral resistance (hygienic and grooming behaviors) than susceptible honey bees. At the end of the summer, resistant honey bees had fewer mites and a lower deformed wing virus (DWV) viral load than susceptible honey bees. DWV variant A was the only detected variant in honey bees and mites. Molecular analysis by Short Tandem Repeat showed that resistant honey bees were Africanized (<i>A. m. scutellata</i> hybrids), whereas susceptible honey bees were closer to European subspecies. Furthermore, significant genetic differentiation was also found between the mite populations. The obtained results show that the natural resistance of honey bees to <i>V. destructor</i> in Uruguay depends on several factors and that the genetic variants of both organisms can play a relevant role.https://www.mdpi.com/2306-7381/7/3/116honey beesmitesvirusesbehaviorsocial immunityAfricanized bees
spellingShingle Yamandú Mendoza
Ivanna H. Tomasco
Karina Antúnez
Loreley Castelli
Belén Branchiccela
Estela Santos
Ciro Invernizzi
Unraveling Honey Bee–<i>Varroa destructor</i> Interaction: Multiple Factors Involved in Differential Resistance between Two Uruguayan Populations
Veterinary Sciences
honey bees
mites
viruses
behavior
social immunity
Africanized bees
title Unraveling Honey Bee–<i>Varroa destructor</i> Interaction: Multiple Factors Involved in Differential Resistance between Two Uruguayan Populations
title_full Unraveling Honey Bee–<i>Varroa destructor</i> Interaction: Multiple Factors Involved in Differential Resistance between Two Uruguayan Populations
title_fullStr Unraveling Honey Bee–<i>Varroa destructor</i> Interaction: Multiple Factors Involved in Differential Resistance between Two Uruguayan Populations
title_full_unstemmed Unraveling Honey Bee–<i>Varroa destructor</i> Interaction: Multiple Factors Involved in Differential Resistance between Two Uruguayan Populations
title_short Unraveling Honey Bee–<i>Varroa destructor</i> Interaction: Multiple Factors Involved in Differential Resistance between Two Uruguayan Populations
title_sort unraveling honey bee i varroa destructor i interaction multiple factors involved in differential resistance between two uruguayan populations
topic honey bees
mites
viruses
behavior
social immunity
Africanized bees
url https://www.mdpi.com/2306-7381/7/3/116
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