ABSTRACT

We analyzed the diet of Athene cunicularia cunicularia in order to identify and compare prey items in dune populations in Santa Catarina, Brazil: Interpraias (INT), Praia Brava (BRA), Praia Central (NAV) and Peninsula (BVE). Due to the characteristics of urbanization in these regions, we hypothesized that there would be greater abundance and consumption of urban insect pests in the areas of BRA, NAV, and INT than in BVE. We collect owl pellets monthly in 2017. The non-parametric analysis ANOVA was applied to identify differences in pellet weights and niche amplitude between populations and seasons and PERMANOVA was applied to identify differences between prey items. Were collected 1064 pellets containing 20 prey items, including: invertebrates (Arachnida, Insecta and Crustacea Malacostraca – 83%), vertebrates (Osteichthyes, amphibians, Reptilia, birds and Mammalia – 8.6%), seeds (6.38%) and miscellaneous materials of anthropic origin (0.19%). There was no difference in the pellet weights, but the diets observed in INT and BRA were significantly different, a result that may be a reflection of the microenvironments in which the burrowing owl lives. This shows that, in addition to a generalist diet, this species has the capacity to adapt to urban changes.

摘要

我们分析了雅典娜cunicularia cunicularia的饮食为了识别和比较巴西圣卡塔琳娜州沙丘种群中的猎物：英特普拉亚（INT），普拉亚布拉瓦（BRA），普拉亚中部（NAV）和半岛（BVE）。由于这些地区的城市化特征，我们假设BRA，NAV和INT区域比BVE区域的城市虫害数量和消费量更大。我们在2017年每月收集猫头鹰颗粒。使用非参数分析ANOVA来识别种群和季节之间颗粒重量和生态位振幅的差异，并使用PERMANOVA来识别猎物之间的差异。收集了1064个包含20种猎物的小球，包括：无脊椎动物（蛛形纲，昆虫纲和甲壳纲-83％），脊椎动物（石ste，两栖动物，Reptilia，鸟类和哺乳动物-8.6％），种子（6.）。38％）和人类起源的杂项材料（0.19％）。颗粒的重量没有差异，但是在INT和BRA中观察到的饮食差异显着，其结果可能反映了穴居猫头鹰所处的微环境。这表明，除了通配饮食外，该物种还具有适应城市变化的能力。