A significant reduction in genetic variation (bottleneck) was detected in most of the ponds on Lolland. This was most probably caused by an inbreeding effect reducing fitness, which was supported by the observed significant negative correlation between larva survival and mean F(IS) value and mean individual inbreeding coefficient. A significant overall deviation from Hardy-Weinberg expectations could be attributed to three ponds, all on Lolland.
Genetic variation based on 12 polymorphic DNA microsatellites was analysed in 494 tree frogs sampled from two ponds in Jutland and 10 ponds on Lolland. The two regions have experienced the same rate of habitat loss but fragmentation has been more severe on Lolland. Fog, KÃ¥re Damgaard, ChristianĪ genetic study of the European tree frog, Hyla arborea, in Denmark was undertaken to examine the population structure on mainland Jutland and the island of Lolland after a period of reduction in suitable habitat and population sizes. Habitat fragmentation causes bottlenecks and inbreeding in the European tree frog ( Hyla arborea).Īndersen, Liselotte W.
