Intrinsic survival advantage of social insect queens depends on reproductive activation.
Intrinsic survival advantage of social insect queens depends on reproductive activation.
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DOI：
10.1111/jeb.12749
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发表时间：
2015-12
影响因子：
2.1
通讯作者：
Schrempf A
中科院分区：
文献类型：
--
作者：
Rueppell O;Königseder F;Heinze J;Schrempf A
繁殖和长寿之间的权衡决定了大多数物种的生活史。然而，在真社会物种中，繁殖的死亡率是不明显的，特别是膜翅目的群居昆虫：一个群体中的一个或几个个体（通常被称为蜂后）专门从事繁殖，通常比其他所有群体成员（通常被称为工蜂）更长寿，尽管具有相同的基因组。然而，尚不清楚这种生存优势是由于群体的社会促进还是一种内在的个人属性。此外，尚不清楚生殖和长寿之间的相关性是由于直接的机制联系，还是由于生殖者的社会角色的间接后果。为了开始解决这些问题，我们在社会隔离条件下对蚁后和工蚁的寿命进行了比较。在实验室条件下比较了单蚁后和工蜂的成活率，并对产卵进行了监测和控制。我们的研究结果表明，除非个体变得繁殖活跃，否则蚁后相对于工蜂没有内在的生存优势。在正常的社会环境之外，种姓和繁殖对预期寿命的互动影响表明，群居昆虫蚁后的繁殖与寿命之间存在正相关关系，这是由于一种直接的联系，可以激活内在的生存机制，以确保蚁后的寿命。
The central trade-off between reproduction and longevity dominates most species’ life history. However, no mortality cost of reproduction is apparent in eusocial species, particularly social insects in the order Hymenoptera: one or a few individuals (typically referred to as queens) in a group specialize on reproduction and are generally longer-lived than all other group members (typically referred to as workers), despite having the same genome. However, it is unclear whether this survival advantage is due to social facilitation by the group or an intrinsic, individual property. Furthermore, it is unknown whether the correlation between reproduction and longevity is due to a direct mechanistic link or an indirect consequence of the social role of the reproductives. To begin addressing these questions, we performed a comparison of queen and worker longevity in the ant Cardiocondyla obscurior under social isolation conditions. Survival of single queens and workers was compared under laboratory condition, monitoring and controlling for brood production. Our results indicate that there is no intrinsic survival advantage of queens relative to workers unless individuals are becoming reproductively active. This interactive effect of caste and reproduction on life expectancy outside of the normal social context suggests that the positive correlation between reproduction and longevity in social insect queens is due to a direct link that can activate intrinsic survival mechanisms to ensure queen longevity.
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影响因子：
9.2
作者：
Schrempf, A;Heinze, J;Cremer, S
通讯作者：
Cremer, S
影响因子：
--
作者：
Dixon, Luke;Kuster, Ryan;Rueppell, Olav
通讯作者：
Rueppell, Olav
影响因子：
3.7
作者：
Schrempf, Alexandra;Heinze, Juergen
通讯作者：
Heinze, Juergen
DOI：
10.1073/pnas.0502681103
发表时间：
2006-01-24
影响因子：
11.1
作者：
Seehuus, SC;Norberg, K;Amdam, GV
通讯作者：
Amdam, GV
DOI：
10.1073/pnas.1530303100
发表时间：
2003-08-05
影响因子：
11.1
作者：
Lee, RD
通讯作者：
Lee, RD