ABSTRACT We studied the composition and seasonal changes in diet and prey selection in the wall lizard Podarcis vaucheri of the Djurdjura Mountains throughout its activity period, from April to October 2014. The analysis of 238 faecal pellets revealed 1 206 prey items distributed in 19 prey categories. The most important prey categories were: Formicidae, Coleoptera, Aranea, Homoptera, and Orthoptera. Significant seasonal variation in the taxonomic composition of the diet and prey availability was found. A significant difference in diet composition was observed between males and females in spring. This lizard species displayed a more diverse dietary spectrum during this period, followed by a slight decrease in summer. However, a severe decrease in the food niche breadth was observed in autumn, resulting in a high consumption of ants. A comparison of diet composition and prey availability showed that lizards exhibited a clear selection of certain prey types, in contrast to what is often suggested for lacertid lizards.

中文翻译：

---

来自阿尔及利亚北部 Djurdjura 山脉的壁蜥 Podarcis vaucheri（Boulenger，1905 年）的饮食和猎物供应的季节性变化

摘要 我们研究了 2014 年 4 月至 10 月 Djurdjura 山脉壁蜥 Podarcis vaucheri 在其活动期间的饮食和猎物选择的组成和季节变化。对 238 个粪便颗粒的分析显示，1206 个猎物分布在 19 个猎物类别中. 最重要的猎物类别是：蚁科、鞘翅目、蜘蛛目、同翅目和直翅目。发现饮食的分类组成和猎物可用性存在显着的季节性变化。春季雄性和雌性之间的饮食成分存在显着差异。在此期间，这种蜥蜴物种表现出更加多样化的饮食谱，随后在夏季略有减少。然而，在秋季观察到食物生态位宽度严重减少，导致蚂蚁的高消费。