“Varroa-resistant” honey bees?

Researchers have observed that on the island of Gotland in Sweden, honey bee colonies that were abandoned and left untreated for ten years led to the emergence and selection of spontaneously varroa-resistant strains. Subsequently, several other naturally resistant colonies were discovered in other parts of the world. This article presents the state of the literature on the three phenomena influencing resistance behaviours of the honey bee in response to the varroa mite.