Unraveling Honey Bee-Varroa destructor Interaction : Multiple Factors Involved in Differential Resistance between Two Uruguayan Populations

The ectoparasite Varroa destructor is the greatest biotic threat of honey bees Apis mellifera 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 A. mellifera-V. destructor 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 (A. m. scutellata 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 V. destructor in Uruguay depends on several factors and that the genetic variants of both organisms can play a relevant role.

Medienart:

E-Artikel

Erscheinungsjahr:

2020

Erschienen:

2020

Enthalten in:

Zur Gesamtaufnahme - volume:7

Enthalten in:

Veterinary sciences - 7(2020), 3 vom: 20. Aug.

Sprache:

Englisch

Beteiligte Personen:

Mendoza, Yamandú [VerfasserIn]
Tomasco, Ivanna H [VerfasserIn]
Antúnez, Karina [VerfasserIn]
Castelli, Loreley [VerfasserIn]
Branchiccela, Belén [VerfasserIn]
Santos, Estela [VerfasserIn]
Invernizzi, Ciro [VerfasserIn]

Links:

Volltext

Themen:

Africanized bees
Behavior
Honey bees
Journal Article
Microsatellites
Mites
Social immunity
Uruguay
Viruses

Anmerkungen:

Date Revised 30.10.2020

published: Electronic

Citation Status PubMed-not-MEDLINE

doi:

10.3390/vetsci7030116

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM313989745