首页|Red tail in male spiny footed lizards Acanthodactylus erythrurus during the breeding season
Red tail in male spiny footed lizards Acanthodactylus erythrurus during the breeding season
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The spiny footed lizard Acanthodactylus erythrurus (Schinz, 1833) is a widely distributed lacertid from the Iberian Peninsula and north-west Africa (Sindaco & Jeremcenko, 2008) of which the complex taxonomy continues to be an ongoing topic of discussion (Harris et al., 2004; Fonseca et al., 2009, Miralles et al., 2020). This species complex displays visible polymorphism throughout its range, although its features of sexual dimorphism are considered to be invariable across all phenotypic forms (Schleich et al., 1996; Salvador, 2014). Chromatic dimorphism mainly consists of the accentuation of colouration in males, especially the lateral yellow ocelli, whilst in females the tail and hind legs exhibit a conspicuous red/orange colouration. These characteristics are evident both in the population of north-west Africa (Schleich et al., 1996), as well as in the populations of the Iberian Peninsula (González de la Vega, 1989; Ortiz-Santaliestra et al., 2011; Fresnillo et al., 2015). It has even been suggested that there are no examples of males displaying tails with red colouration (Barbadillo, 1994). Hypotheses that aim to account for this sexual dimorphism contemplate the possibility that the red tail observed in sexually receptive females could be linked to mating, whilst the loss of colouration could be linked to pregnancy (Cuervo & Belliure, 2013).
Red tailmale spiny footed lizardsAcanthodactylus erythrurus during
FRANCISCO JIMéNEZ-CAZALLA
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Sociedad de Estudios Ambientales C/Perú 4, Seville, 41100, Spain
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