Reproductive ecology of Bombina variegata : Habitat use
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منابع مشابه
Reproductive Ecology of Bombina variegata: Characterisation of Spawning Ponds
The use of spawning sites by Bombina variegata was analysed in a dynamic habitat containing a variety of different ponds. Cool or shadowy as well as permanent ponds were not used for spawning at all. Among the ephemeral ponds that were used, egg numbers increased with water temperature, both when compared among ponds and between different areas within ponds. Egg numbers were also higher in pond...
متن کاملReproductive ecology of Bombina variegata : aspects of life history
Individual reproductive behaviour and survival of Bombina variegata was studied in a dynamic habitat with a variety of rain-filled ponds from 1990 to 1992. Most animals reached sexual maturity at the age of two years. Annual adult survival was at least 62 %. Individual females, on average, laid between 40 and 70 eggs per ?clutch?. While about 12 % of the breeding females spawned a second time w...
متن کاملMechanisms for partial reproductive isolation in a Bombina hybrid zone in Romania
Differences between taxa which have developed in allopatry can contribute to reproductive isolation in the case of secondary contact. Hybrid zones are ideal study systems in which to investigate the role of preand postzygotic mechanisms for the reduction or inhibition of gene flow. This thesis describes a hybrid zone between the fire-bellied toads Bombina bombina and B. variegata in Romania. Th...
متن کاملThe maintenance of reproductive isolation in a mosaic hybrid zone between the fire-bellied toads Bombina bombina and B. variegata.
Mosaic hybrid zones arise when ecologically differentiated taxa hybridize across a network of habitat patches. Frequent interbreeding across a small-scale patchwork can erode species differences that might have been preserved in a clinal hybrid zone. In particular, the rapid breakdown of neutral divergence sets an upper limit to the time for which differences at marker loci can persist. We pres...
متن کاملPara‐allopatry in hybridizing fire‐bellied toads (Bombina bombina and B. variegata): Inference from transcriptome‐wide coalescence analyses
Ancient origins, profound ecological divergence, and extensive hybridization make the fire-bellied toads Bombina bombina and B. variegata (Anura: Bombinatoridae) an intriguing test case of ecological speciation. Previous modeling has proposed that the narrow Bombina hybrid zones represent strong barriers to neutral introgression. We test this prediction by inferring the rate of gene exchange be...
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