Table 3. Numbers of cercariae of Trichobilharzia szidati released from Lymnaea stagnalis per two-hour interval.
| Month | Type of experiment | Day of experiment | Time/Number (mean) of emerged cercariae per two-hour interval | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 00:00–02:00 | 02:00–04:00 | 04:00–06:00 | 06:00–08:00 | 08:00–10:00 | 10:00–12:00 | 12:00–14:00 | 14:00–16:00 | 16:00–18:00 | 18:00–20:00 | 20:00–22:00 | 04:00–06:00 | |||
| July | Peak output experiment in laboratory (PJ-L; n = 11) | Day 1 | 950 (86) | 390 (35) | 1,430 (130) | 3,750 (341) | 1,230 (112) | 1,670 (152) | 870 (79) | 500 (45) | 210 (19) | 780 (71) | 450 (41) | 1,430 (130) |
| Day 2 | 120 (11) | 180 (16) | 7,070 (643) | 1,040 (95) | 1,860 (169) | 2,400 (218) | 1,140 (104) | 1,050 (95) | 420 (38) | 150 (14) | 320 (29) | 7,070 (643) | ||
| Day 3 | 160 (15) | 220 (20) | 5,840 (530) | 1,330 (121) | 1,340 (122) | 1,320 (120) | 1,880 (171) | 1,140 (104) | 1,030 (94) | 2,690 (245) | 720 (65) | 5,840 (530) | ||
| Total | 1,230 (112) | 790 (72) | 14,340 (1,304) | 6,120 (556) | 4,430 (403) | 5,390 (490) | 3,890 (354) | 2,690 (245) | 1,660 (151) | 3,620 (329) | 1,490 (136) | 14,340 (1,304) | ||
| Peak output experiment in climate chamber (PJ-C; n = 11) | Day 1 | 500 (50) | 400 (40) | 220 (22) | 5,120 (512) | 5,830 (583) | 4,200 (420) | 760 (76) | 540 (54) | 240 (24) | 290 (29) | 90 (9) | 220 (22) | |
| Day 2 | 50 (5) | 50 (5) | 160 (16) | 1,400 (140) | 2,220 (222) | 1,640 (164) | 1,130 (113) | 310 (31) | 250 (25) | 370 (37) | 140 (14) | 160 (16) | ||
| Day 3 | 460 (46) | 290 (29) | 1,080 (180) | 350 (35) | 660 (66) | 1,650 (165) | 1,570 (157) | 430 (43) | 460 (46) | 1,390 (139) | 270 (27) | 1,080 (180) | ||
| Total | 1,010 (92) | 740 (67) | 1,460 (133) | 6,870 (625) | 8,710 (792) | 7,490 (681) | 3,460 (315) | 1,280 (116) | 950 (86) | 2,050 (186) | 500 (70) | 1,460 (133) | ||
| September | Peak output experiment in climate chamber (PS-C; n = 9) | Day 1 | 810 (90) | 530 (59) | 880 (98) | 12,180 (1,353) | 28,060 (3,118) | 14,020 (1,558) | 25,470 (2,830) | 15,260 (1,696) | 11,110 (1,234) | 7,510 (834) | 4,230 (470) | 880 (98) |
| Day 2 | 1,080 (120) | 950 (106) | 1,140 (127) | 1,100 (122) | 16,600 (1,844) | 9,400 (1,044) | 22,810 (2,534) | 17,650 (1,961) | 12,810 (1,423) | 3,160 (351) | 14,800 (1,644) | 1,140 (127) | ||
| Day 3 | 880 (98) | 830 (92) | 1,780 (198) | 570 (63) | 3,430 (381) | 5,420 (602) | 5,300 (589) | 6,670 (741) | 3,380 (376) | 3,060 (340) | 14,090 (1,566) | 1,780 (198) | ||
| Total | 2,770 (308) | 2,310 (257) | 3,800 (422) | 13,850 (1,593) | 48,090 (5,343) | 28,540 (3,204) | 53,580 (5,953) | 39,580 (4,398) | 27,300 (3,033) | 13,730 (1,526) | 33,120 (3,680) | 3,800 (422) | ||
Total and mean (in parenthesis) numbers of cercariae released by a given number of snails used in each experiment (indicated by “n” in parentheses) per day for each two-hour interval. In September only one experiment was performed.