High-quality habitats presumably have the resources required to sustain relatively high rates of survival and reproduction. We assessed how habitat type and local environmental conditions determine the distribution of individuals of Canthon cyanellus (Coleoptera: Scarabaeidae), an eurytopic dung beetle, according to age category and sexual gonadic maturity. Beetles were surveyed in forest fragments, live fences, and pastures in Mexico. Individuals were categorised into six age categories according to the glandular volumes in males and oocyte number and length in females. Mature females in forest fragments were the most abundant females found among the habitats. Air humidity and soil hardness were positively and negatively related to mature female abundance, respectively. Mature beetles were the most abundant among males, and higher abundance of males occurred in forest fragments than in live fences and pastures. Light quantity was negatively related to the abundance of young males. Compared to forest fragments, females in pastures had larger oocytes. However, sites with higher soil hardness and air humidity had females with lower numbers of oocytes. Our results demonstrate that, although C. cyanellus occurs across a wide range of habitats, forest habitats might host sexually mature individuals, which translates into more effective individual dispersion and potential reproduction.

高质量的栖息地可能拥有维持相对较高的存活率和繁殖率所需的资源。我们评估了栖息地类型和当地环境条件如何决定Canthon cyanellus个体的分布（鞘翅目：金龟子科），一种广域蜣螂，根据年龄类别和性腺成熟度。在墨西哥的森林碎片、活栅栏和牧场中对甲虫进行了调查。根据男性的腺体体积和女性的卵母细胞数量和长度将个体分为六个年龄类别。森林碎片中的成熟雌性是栖息地中发现的最丰富的雌性。空气湿度和土壤硬度分别与成熟雌性丰度呈正相关和负相关。成年甲虫在雄性中最为丰富，在森林碎片中的雄性比在活围栏和牧场中的丰度更高。光量与年轻雄性的丰度呈负相关。与森林碎片相比，牧场中的雌性具有更大的卵母细胞。然而，土壤硬度和空气湿度较高的地点的雌性卵母细胞数量较少。我们的结果表明，虽然C. cyanellus出现在广泛的栖息地中，森林栖息地可能容纳性成熟的个体，这转化为更有效的个体分散和潜在繁殖。