59-05-032 Proceeding

367 Proceedings of the Princess Maha Chakri Sirindhorn Congress Colony Number of cells inspected Number of cells infested by more than 1 foundress Percentage of cells infested by more than 1 foundress Number of foundresses Number of daughters Number of daughters per multiply infested cell 8 914 3 0.3 6 2 0.7 9 1,081 6 0.6 13 8 1.3 10 1,784 15 0.8 32 17 1.1 11 632 2 0.3 4 2 1.0 12 3,241 16 0.5 35 19 1.2 13 3,453 23 0.7 51 28 1.2 14 992 5 0.5 11 4 0.8 15 2,693 8 0.3 17 9 1.1 16 745 6 0.8 14 5 0.8 17 592 3 0.5 7 3 1.0 18 856 2 0.2 4 2 1.0 19 951 6 0.6 13 4 0.7 20 636 5 0.8 12 5 1.0 21 964 7 0.7 15 6 0.9 Total or average 24,857 129 0.5 280 134 1.0 In worker brood cells infested with one T. mercedesae female, the average percentage of non-reproductive mites on Pdl or older pupae was 64.4% (Table 2). Almost all of these non- reproductive mites were ones that did not lay eggs. Only 5 non-reproductive mites produced progeny too late for an adult daughter mite by the time the host bee emerged. Table 2 Numbers of worker brood cells in dark brown eyes with light pigmented thorax pupae and older infested by single foundresses of T. mercedesae and their rates of reproduction and non-reproduction in 21 colonies of A. dorsata in Thailand. Colony No. of cells inspected No. of cells infested by only 1 foundress Percentage of cells infested by only 1 foundress Non-reproductive mites Reproductive mites N Percentage non- reproductive No eggs (%) Delayed eggs (%) N Percentage reproductive No. of progeny Progeny per mite 1 693 18 2.6 10 55.6 10 0 8 44.4 10 1.3 2 569 23 4.0 13 56.5 13 0 10 43.5 14 1.4 3 672 15 2.2 9 60.0 8 1 6 40.0 10 1.7 4 517 11 2.1 6 54.5 6 0 5 45.5 8 1.6 5 814 14 1.7 9 64.3 9 0 5 35.7 7 1.4 6 1,275 28 2.2 19 67.9 19 0 9 32.1 14 1.6 7 783 21 2.7 15 71.4 14 1 6 28.6 6 1.0 8 914 29 3.2 18 62.1 18 0 11 37.9 15 1.4 9 1,081 17 1.6 11 64.7 11 0 6 35.3 9 1. 5