Context-dependent expression of sexual dimorphism in island populations of the common wall lizard (Podarcis muralis)
نویسندگان
چکیده
Dipartimento di Scienze della Terra e dell’Ambiente, Università di Pavia, Via Taramelli 24, I-27100, Pavia, Italy Museo Civico di Storia Naturale, Corso Venezia 55, I-20121 Milano, Italy Museo di Storia Naturale e del Territorio, Università di Pisa, Via Roma 79, I-56011 Calci (Pisa), Italy Dipartimento di Scienze della Terra e dell’Ambiente, Università di Pavia, Via Ferrata 9, I-27100, Pavia, Italy
منابع مشابه
Phylogeography and Conservation Genetics of the Common Wall Lizard, Podarcis muralis, on Islands at Its Northern Range
Populations at range limits are often characterized by lower genetic diversity, increased genetic isolation and differentiation relative to populations at the core of geographical ranges. Furthermore, it is increasingly recognized that populations situated at range limits might be the result of human introductions rather than natural dispersal. It is therefore important to document the origin a...
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During 2005-2008, field observations were made on the distribution and habitat occupation by Podarcis muralis in the middle Bistrita river basin. Prior to our study, this lizard was known from only 5 localities in Romanian Moldavia (Bicaz, Cheile Bicazului, Lacu Roşu, Gherman and Dodeni). Through the present paper the authors acknowledge the existence of 28 sites populated by P. muralis in Mold...
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Color polymorphisms are widespread in nature and may show a high variability not only within the same population, but also among populations of the same species., Color polymorphism is a common feature among reptiles and is often linked to evolution of alternative strategies. Alternative and discrete color morphs have been reported in the common wall lizard, Podarcis muralis, which show six dif...
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Animal coloration is strikingly diverse in nature. Within-species color variation can arise through local adaptation for camouflage, sexual dimorphism and conspicuous sexual signals, which often have conflicting effects on survival. Here, we tested whether color variation between two island populations of Aegean wall lizards (Podarcis erhardii) is due to sexual dimorphism and differential survi...
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Sexual steroids influence reproductive behaviours and promote secondary sexual traits. In male lizards, increasing levels of testosterone (T) bolster conspicuous colouration, stimulate territoriality, and trigger antagonistic interactions among rivals. Moreover, in colour polymorphic species, reproductive strategy, aggressiveness and T levels can differ between morphs. Therefore, T level is con...
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