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Date: | Fri, 24 Feb 2023 15:26:59 -0500 |
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The last post on potential flaws got me to another study by Grindrod and Martin: Parallel evolution of Varroa resistance in honey bees: a common mechanism across continents. In the Grindrod study, they did an extensive review of 60 selected papers that described treatment-free populations around the world, and their conclusion supports what the study below determined about the Cuban bees. When the trinity of recapping, hygienic behavior, and low mite fertility emerge in a population, varroa are resisted to the extent that chemical treatments (illegal in Cuba) are unnecessary. Although Cuban beekeepers trap drones and requeen yearly. On the arch of diversity, Cuban bees are homogeneous, which is interesting.
From the Cuban Paper
>In addition, the microsatellite data showed that Cuba has a homogeneous population of managed honeybees across the country without any regional differences, confirming the isolated nature of the population.
>Here we studied the mite-resistance in Cuba and found high rates of recapping of infested worker cells (77%), high removal of mites (80%) and corresponding low mite fertility (r = 0.77).
> Recapping and mite removal behaviour in Cuba: home to the world’s largest population of Varroa-resistant European honeybees
Anais Rodríguez Luis et al.
> https://www.nature.com/articles/s41598-022-19871-5#citeas
A Bee-L trip to Cuba is begging to happen
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