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Table 1 Effect of different blood feeding frequencies on Glossina palpalis gambiensis survival, productivity and fertility

From: Evaluation of different blood-feeding frequencies on Glossina palpalis gambiensis performance in a mass-rearing insectary

Blood-feeding treatmenta No. of females surviving at day 30 (%) No.of mature females No. of pupae produced Pupae size classesb Fecundity Quality factorc Uterus Insemination rate Pupae quality control
No. of recently ovulated egg (%) No. of empty eggs due to abortion (%) No. of viable instar larvae
Day 18 Day 30 A B C First (%) Second (%) Third (%) No. of emergences (%) No. of operational flies (%)
F3 261 (72.5) 1352 1325 280 99 174 6 0.072 1.18 28 (24.4) 21 (18.3) 23 (20) 30 (26) 13 (11.3) 1 250 (89.3) 210 (84)
F4 314 (87.2) 1394 1378 457 126 314 17 0.092 1.48 24 (8.8) 14 (5.1) 85 (31.1) 98 (35.9) 52 (19.1) 1 445 (97.4) 419 (94.15)
F6 283 (78.6) 1363 1333 454 112 301 41 0.087 1.59 8 (3.1) 12 (4.6) 60 (22.9) 130 (49.8) 51 (19.6) 1 437 (96.6) 423 (96.79)
  1. aFlies were fed three times per week (F3) on Monday, Wednesday and Friday; four times per week (F4) on Monday, Tuesday, Thursday and Friday; or six times per week (F6) from Monday to Saturday
  2. bA, < 22 mg; B, 22 to < 28 mg; C, 28 to < 32 mg
  3. cA quality factor of > 1 indicates that blood is suitable for colony maintenance