论文标题
知情招聘或库存的重要性
Informed recruitment or the importance of taking stock
论文作者
论文摘要
一个重要的决定,特别是对于长寿命物种,是从何处开始繁殖,即在何时何地招募。对于招聘的明智决定,个人可能会推动潜在的繁殖地点,并收集有关未来繁殖地点的信息,从而减少不确定性。在性成熟的年龄范围内,招聘也可能会延迟或进步,并且这一个人决定可能会影响首次繁殖,衰老模式以及最终终生生殖成功的生存成本。在这里,我们表明,长期寿命的Audouin鸥的招募大部分被告知,这意味着主要发生在个人以前访问殖民地时发生。在没有收集信息的情况下招募的个人都是年轻的首次育种者。有趣的是,这些新兵受到人口结转效果的影响:首先,在随后的季节中,他们比进行知情招聘的人要少得多。更引人注目的是,不知情的招募也影响了生存,这对于那些在繁殖地点收集信息的情况下,繁殖的人要低得多。这项研究表明,在招募前进行库存可能对于减少环境不确定性和最大化个人健身前景至关重要。
One important decision, especially for long-lived species, is where and when to start reproduction, i.e. where and when to recruit. For an informed decision on recruitment, individuals may prospect potential breeding sites and gather information on the future breeding site, hence reducing uncertainty. Recruitment may also be delayed or advanced over a range of sexually mature ages and this individual decision may influence survival costs of first reproduction, senescence patterns and ultimately lifetime reproductive success. Here we show that recruitment in the long-lived Audouin's gull is mostly informed, meaning that mainly occurs when the individual has visited the colony before. Individuals recruiting without gathering information were all young first-time breeders. Interestingly, these recruits were affected by demographic carry-over effects: first, they were much less prone to reproduce in subsequent seasons than individuals that performed informed recruitment. More strikingly, uninformed recruitment also affected survival, which was much lower for those individuals breeding without gathering information on the breeding site. This study suggests that taking stock before recruitment may be crucial for reducing environmental uncertainty and for maximising individual fitness prospects.