O. G. Dely szerk.: Vertebrata Hungarica 21. (Budapest, 1982)

Berger, L., Uzell, Th. ; Hotz, H.: Crossing experiments between some Western Palearctic species of water frogs (Salientia: Ranidae) 33-46. o.

Table 1. Vitality of progeny from crosses of the following water frog forms Parents Number eggs of Survival embryos of to Vitality of tadpoles First cleastage 25 Living TJ 0) > u First cleam 0) Frogs N/y 9 <S to £ O (%%) N 9 '0% N Dead 0 % Metam.in days H Range Mean 1. 8/79 N32 N 95 92. 6 80 90 9 8 8 40-47 43.4 2. 11/79 N41 N34 281 100. 0 260 92 5 3. 2/81 N N 320 100. 0 316 98 .7 4. 14/81 N N 232 100. 0 225 97 .0 7 7 45-54 49.3 5. 15/80 H H 232 98. 7 200 91 .5 200 200 6. 4/81 H30 H 374 99. 7 351 94 1 351 351 7. 8/81 H

64 H 269 99. 3 247 92 .5 247 247 8. 12/79 N H 476 99. 8 431 90 4 _ 9. 13/79 N H 498 40. 4 201 97 5 10 10 74-98 82.0 10. 14/79 N33 H

21 433 30. 7 132 99 2 20 20 70-93 74.5 11. 23/81 N Pf 367 100. 0 366 99 7 8 8 45-57 51.5 12. 14/80 H5I P12 290 98. 3 276 96 8 20 20 13. 7/81 H Pf 282 100. 0 277 98 2 8 8 68-87 77.7 14. 2/80 L N

38 226 75. 7 127 74 3 20 1 19 41-46 43.2 15. 6/80 L N38 250 30. Ox 25 33 .3 20 20 40-48 42.3 16. 7/80 L N38 197 98. 5x 187 96 4 20 1 19 41-46 43.1 17. 10/80a L N38 240 20. 4x 36 73 5 10 1 9 39-43 40.4 18. 10/80b L N 372 71. 8 175 65 .5 10 10 40-46 43.0 19. 13/80 L N 235 97. 9 226 98 .3 6 6 36-38 37.2 20. 12/81 N L 237 96. 2 92 40 .3 10 10 38-43 39.6 21. 4/80 R N38 4000 0. 2 7 100 0 7 7 _ 22. 5/80 R N

3

8 178 98. 3x 140 80 .0 20 1 19 41-53 46.6 23. 7/79a E N

37 308 97 lx 94 31 .4 8 8 41-48 43.7 24. 9/79 L H21 2059 36 9 727 95 .8 16 16 37-46 39.8 25. 7/79b E H22 418 49. Ox 18 8 .8 18 12 6 42-51 45.7 26. 17/81 RL H 318 83 0 60 22 .7 60 60 27. 10/79 Rt H21 1608 12 9 176 84 .6 16 2 14 37-47 42.0 28. 1/80 L Pi?, 266 92 1 233 95 .0 15 15 40-43 41.4 29. 9/81 L Pf 208 96 2 195 97 .5 8 8 39-45 41.1 30. 15/81 L Pf 210 95 3 66 33 .0 10 1 9 39r43 40.9 Italian non-hybrid - N, Italian hybrid - H, R. perez

i from France - Pf and Portugal - P

1

2> R. lessona

e - L, R

. rldlbund

a - R, R

. rldlbund

a from Turkey - Rt, R. esculent

a - E and RL (Fi hybrid between R. rldlbund

a female and R. lessona

e male). Tadpoles of crosses 9 and 10 developed outdoors and the others Indoors. N/y - successive number of female (N) and year (y) of laying the eggs, N - number of individuals, x - artificial fertilization