Triparental care in the collared flycatcher (Ficedula albicollis): Cooperation of two females with a cuckolded male in rearing a brood,Ecology and Evolution

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Triparental care in the collared flycatcher (Ficedula albicollis): Cooperation of two females with a cuckolded male in rearing a brood
Ecology and Evolution ( IF 2.3 ) Pub Date : 2021-07-28 , DOI: 10.1002/ece3.7923
Miklós Laczi _{1,

2} , Renáta Kopena ₃ , Fanni Sarkadi ₁ , Dóra Kötél ₁ , János Török _{1,

4} , Balázs Rosivall ₁ , Gergely Hegyi ₁

Affiliation

Certain predominant forms of mating and parental care systems are assumed in several model species among birds, but the opportunistic and apparently infrequent variations of “family structures” may often remain hidden due to methodological limitations with regard to genetic or behavioral observations. One of the intensively studied model species, the collared flycatcher (Ficedula albicollis), is usually characterized by social monogamy with polyterritorial, facultative social polygyny, and frequent extrapair mating and extrapair paternity. During a brood-size manipulation experiment, we observed two females and a male delivering food at an enlarged brood. A combination of breeding phenology data (egg laying and hatching date), behavioral data (feeding rates) from video recordings at 10 days of nestling age, and microsatellite genotyping for maternity and paternity suggests a situation of an unrelated female helping a pair in chick rearing. Such observations highlight the relevance of using traditional techniques and genetic analyses together to assess the parental roles within a population, which becomes more important where individuals may dynamically switch from their main and presupposed roles according to the actual environmental conditions.

中文翻译：

领鹟 (Ficedula albicollis) 的三亲照料：两只雌性与一只戴绿帽子的雄性合作养育幼崽

在鸟类的几个模型物种中假定了某些主要形式的交配和亲代照顾系统，但由于遗传或行为观察方面的方法学限制，“家庭结构”的机会主义和明显不频繁的变化可能经常被隐藏起来。项圈鹟（ Ficedula albicollis ）是深入研究的模式物种之一，其特征通常是具有多领地的社会一夫一妻制、兼性社会一夫多妻制以及频繁的配对外交配和配对外亲子关系。在一项育雏规模操纵实验中，我们观察到两只雌性和一只雄性在扩大的育雏中运送食物。结合繁殖物候数据（产蛋和孵化日期）、雏鸟 10 天视频记录的行为数据（进食率）以及母性和父性微卫星基因分型，表明一只不相关的雌性帮助一对雏鸟抚养的情况。这些观察结果强调了使用传统技术和遗传分析来评估群体中亲本角色的相关性，当个体可以根据实际环境条件动态地从其主要角色和预设角色切换时，这一点变得更加重要。

更新日期：2021-08-16

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