Reproduction, social behavior, and aging trajectories in honeybee workers
Reproduction, social behavior, and aging trajectories in honeybee workers
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DOI：
10.1007/s11357-013-9546-7
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发表时间：
2014-02-01
期刊：
影响因子：
--
通讯作者：
Rueppell, Olav
中科院分区：
文献类型：
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作者：
Dixon, Luke;Kuster, Ryan;Rueppell, Olav
虽然通常观察到繁殖和寿命之间的负相关性，但在所有真社会性物种中，包括蜜蜂Apis mellifera（L），专门的繁殖个体比其非繁殖的巢伙伴寿命长。通过比较生育工人和非生育工人，可以直接研究生育对个人预期寿命的影响。我们量化了寿命的后果，在蜜蜂工人的繁殖去除女王触发工人的繁殖。此外，我们观察了实验和控制条件下的大群工人的社会行为，以测试与个人预期寿命的关联。工蚁的预期寿命因蚁后的移除而适度增加。无女王殖民地包含一些长寿的工人，产卵行为与死亡率风险大幅降低，表明生殖作用赋予显着的生存优势。这一发现进一步证实了育雏照顾行为和工人的寿命，取决于社会环境之间的关联。相比之下，其他蜂巢活动，如扇风，trophallaxation，和alloroming并没有一贯影响工人的预期寿命。觅食的影响各不相同的重复。根据以前的研究，从蜂巢内任务过渡到外部觅食的年龄越早，寿命越短。总之，我们的研究量化了个体死亡率如何受到特定社会角色和群体环境的影响，并展示了两者之间的相互作用。蜜蜂的繁殖和寿命之间的特殊的，积极的关联延伸到种姓内的可塑性，这可能是利用机械研究。
While a negative correlation between reproduction and life span is commonly observed, specialized reproductive individuals outlive their non-reproductive nestmates in all eusocial species, including the honeybee, Apis mellifera (L). The consequences of reproduction for individual life expectancy can be studied directly by comparing reproductive and non-reproductive workers. We quantified the life span consequences of reproduction in honeybee workers by removal of the queen to trigger worker reproduction. Furthermore, we observed the social behavior of large cohorts of workers under experimental and control conditions to test for associations with individual life expectancy. Worker life expectancy was moderately increased by queen removal. Queenless colonies contained a few long-lived workers, and oviposition behavior was associated with a strong reduction in mortality risk, indicating that a reproductive role confers a significant survival advantage. This finding is further substantiated by an association between brood care behavior and worker longevity that depends on the social environment. In contrast, other in-hive activities, such as fanning, trophallaxis, and allogrooming did not consistently affect worker life expectancy. The influence of foraging varied among replicates. An earlier age of transitioning from in-hive tasks to outside foraging was always associated with shorter life spans, in accordance with previous studies. In sum, our studies quantify how individual mortality is affected by particular social roles and colony environments and demonstrate interactions between the two. The exceptional, positive association between reproduction and longevity in honeybees extends to within-caste plasticity, which may be exploited for mechanistic studies.