20 daughter colonies of the 4a were tested:
CH-51-71-66-2020 CH-51-71-73-2020 CH-51-71-74-2020 CH-51-71-75-2020 CH-51-71-82-2020 CH-51-71-84-2020 CH-51-71-85-2020 CH-51-77-3-2020 CH-51-77-4-2020 CH-51-77-5-2020 CH-51-77-11-2020 CH-51-77-12-2020 CH-51-77-20-2020 CH-51-77-28-2020 CH-51-77-29-2020 CH-51-77-31-2020 CH-51-77-37-2020 CH-51-77-51-2020 CH-51-77-52-2020 CH-51-77-53-2020
13 tested queens were mated at the mating station:
CH-51-77-34-2022 CH-51-77-50-2022 CH-51-77-57-2022 CH-51-82-12-2022 CH-51-82-13-2022 CH-51-82-14-2022 CH-51-140-11-2022 CH-51-140-31-2022 CH-51-140-603-2022 CH-51-213-27-2022 CH-51-213-70-2022 CH-51-213-960-2022 CH-51-217-991-2022
6 daughter colonies of queens mated at the mating station were tested:
CH-51-77-52-2023 CH-51-77-53-2023 CH-51-77-55-2023 CH-51-77-58-2023 CH-51-140-503-2024 CH-51-140-703-2024