Abstract We analysed sexual dimorphism in body size and several other morphological traits of two populations of Tarentola delalandii on the island of Tenerife (San Cristóbal de La Laguna in the North, and Granadilla de Abona in the South), whose habitats differ in climate and vegetation cover. Sexual size dimorphism was invariant between populations. Males had significantly larger body size (snout−vent length, SVL) than females and SVL was larger in the northern population than in the southern population. Applying a Permutational MANCOVA to the other morphological variables, considering separately head and trunk lengths as covariates, we found a significant effect of population and gender. For the majority of morphological variables (body mass, SVL, width, length and height of the head, trunk length, forelimb and hindlimb, height and width of the tail) studied (eight in each analysis), there were significant differences, males having larger values than females and northern individuals larger values than those of the southern population. Therefore, we confirmed quantitatively a significant male biased sexual dimorphism in body size in the two populations and have shown sexual dimorphism in the characteristics mentioned previously. However, most of the shape-adjusted traits were significantly larger in females than in males. Results are discussed of possible evolutionary, ontogenetic and ecological factors affecting the expression of sexual dimorphism in the species studied.

中文翻译：

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来自特内里费岛不同环境的壁虎Tarentola delalandii（Phyllodactylidae）雄性和雌性体型和形态特征的变化

摘要 我们分析了特内里费岛（北部的 San Cristóbal de La Laguna 和南部的 Granadilla de Abona）的两个 Tarentola delalandii 种群在体型和其他几个形态特征上的性别二态性，它们的栖息地在气候和植被上有所不同。覆盖。种群间的性别大小二态性是不变的。雄性的体型（口鼻腔长度，SVL）明显大于雌性，北方种群的 SVL 大于南方种群。将置换 MANCOVA 应用于其他形态变量，分别考虑头部和躯干长度作为协变量，我们发现人口和性别的显着影响。对于大多数形态变量（体重、SVL、头部的宽度、长度和高度、躯干长度、前肢和后肢、尾巴的高度和宽度）研究（每个分析中有 8 个），存在显着差异，雄性的值大于雌性，北方个体的值大于南方种群的值。因此，我们定量地证实了两个种群在体型上存在显着的男性偏向性二态性，并在前面提到的特征中表现出性二态性。然而，女性的大多数形状调整特征明显大于男性。结果讨论了可能的进化、个体发育和生态因素影响所研究物种中性二态性的表达。因此，我们定量地证实了两个种群在体型上存在显着的男性偏向性二态性，并在前面提到的特征中表现出性二态性。然而，女性的大多数形状调整特征明显大于男性。结果讨论了可能的进化、个体发育和生态因素影响所研究物种中性二态性的表达。因此，我们定量地证实了两个种群在体型上存在显着的男性偏向性二态性，并在前面提到的特征中表现出性二态性。然而，女性的大多数形状调整特征明显大于男性。结果讨论了可能的进化、个体发育和生态因素影响所研究物种的两性二态性表达。