Annual variation of adult survival of a south-temperate House Wren population in Argentina

IF 1.6 2区生物学 Q1 ORNITHOLOGY Avian Research Pub Date : 2024-01-01 DOI:10.1016/j.avrs.2024.100180

Gustavo J. Fernández , Mariana E. Carro , Paulo E. Llambías

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Abstract

Identifying factors affecting the survival of individuals is essential for understanding the evolution of life-history traits and population dynamics. Despite numerous studies on this subject in north-temperate environments, there is a lack of equivalent studies at similar latitudes in the south. Here, we used a 14-year dataset of capture, banding, and resighting to estimate the annual variation in the apparent adult survival probability of a south-temperate population of House Wrens (Troglodytes aedon bonariae). We evaluated temporal variation in survival and the effect of environmental (climatic) and demographic variables (adult abundance, total number of fledglings produced during each breeding season) on survival estimators. We found that the probability of adult survival decreased as the abundance of breeding adults increased. This density-dependent effect could be related to the resident lifestyle of southern House Wrens, which could determine an intense competition for territories and resources that ultimately would affect their survival.

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阿根廷南温带鹪鹩种群成年存活率的年度变化

确定影响个体生存的因素对于了解生命史特征的进化和种群动态至关重要。尽管在北温带环境中有大量这方面的研究，但在南方类似纬度地区却缺乏类似的研究。在此，我们使用了一个 14 年的捕获、带环和重见数据集来估计南温带鹪鹩（Troglodytes aedon bonariae）种群表观成年存活概率的年度变化。我们评估了存活率的时间变化以及环境（气候）和人口变量（成鸟丰度、每个繁殖季节产生的雏鸟总数）对存活率估计值的影响。我们发现，成鸟存活概率随着繁殖成鸟数量的增加而降低。这种与密度相关的影响可能与南方鹪鹩的栖息生活方式有关，这可能决定了它们对领地和资源的激烈竞争，最终会影响它们的存活率。

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来源期刊

Avian Research ORNITHOLOGY-

CiteScore

2.90

自引率

16.70%

发文量

456

审稿时长

46 days

期刊介绍： Avian Research is an open access, peer-reviewed journal publishing high quality research and review articles on all aspects of ornithology from all over the world. It aims to report the latest and most significant progress in ornithology and to encourage exchange of ideas among international ornithologists. As an open access journal, Avian Research provides a unique opportunity to publish high quality contents that will be internationally accessible to any reader at no cost.