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Tree analyses suggest that A. muletensis, endemic to the Balearic island of Mallorca, is the sister taxon to a clade comprising the southeastern Iberian endemic A. dickhilleni and the North African A. maurus. This scenario is consistent with palaeogeological evidence associated with the fragmentation of the Betic-Rifean Massif, followed by the opening of the Strait of Gibraltar. On the other hand, analyses of intraspecific variation in A. obstetricans are inconclusive regarding relationships between major clades and conflict with current subspecific taxonomy. Leer más.

Clutch size of genus Alytes presents strong inter- and intra-specific variability. The Mallorcan midwife toad (A. muletensis) is a threatened endemism of the island of Mallorca (Spain), and has the smallest clutch size of the genus. Most of the previously published clutch size information was obtained from animals breeding in captivity. In this study we analysed a large number of clutches from wild populations, and we compared their size (number of eggs) with previously published data from both captive and wild populations. Leer más.