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Table 3 The number of eggs produced during the 11.5 to 17.5 hrs post-induction period when eggs were fertile, the numbers of eggs from 21.5 to 23 hrs post-induction during which eggs were infertile, and the total number of eggs from both periods (means ± SE). One female expired from the treatment group receiving two primings before egg laying commenced, hence there are nine animals for this group compared to ten for the group receiving one priming.

From: Hormonal priming, induction of ovulation and in-vitro fertilization of the endangered Wyoming toad (Bufo baxteri)

  No. eggs spawned with one priming hrs post-induction. No. eggs spawned with two primings hrs post-induction.
Toad Number 11.5–17.5 20.5–23 11.5–23 11.5–17.5 20.5–23 11.5–23
1 0 0 0 3,540 120 3,660
2 250 250 500 3,530 230 3,760
3 1,430 230 1,660 4,355 1,000 5,355
4 2,325 300 2,625 1,191 750 1,941
5 0 0 0 0 0 0
6 260 300 560 2,050 0 2,050
7 1,250 540 1,790 1,255 260 1,515
8 0 1,710 1,710 4,090 0 4,090
9 3,135 1,340 4,475 2,950 400 3,350
10 0 0 0 NA NA NA
Total eggs 8,650 4,670 13,320 22,961 2,760 25,721
Average No. eggs for all toads 865 ± 353
(n = 10)
467 ± 186
(n = 10)
1,332 ± 455
(n = 10)
2,551 ± 500
(n = 9)
306 ± 118
(n = 9)
2,857 ± 539
(n = 9)
Average No. eggs of spawning toads 1,441 ± 465
(n = 6)
667 ± 228
(n = 7)
1,903 ± 512
(n = 7)
2,870 ± 436
(n = 8)
460 ± 139
(n = 6)
3,215 ± 458
(n = 8)