Mass killing by female soldier larvae is adaptive for the killed male larvae in a polyembryonic wasp
Mass killing by female soldier larvae is adaptive for the killed male larvae in a polyembryonic wasp
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女士兵幼虫的大规模捕杀适应了多胚黄蜂中被杀死的雄性幼虫
DOI：
10.1038/s41598-019-43643-3
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发表时间：
2019
影响因子：
4.6
通讯作者：
Yoshimura Jin
中科院分区：
文献类型：
--
作者：
Otsuki Takahiro;Uka Daisuke;Ito Hiromu;Ichinose Genki;Nii Momoka;Morita Satoru;Sakamoto Takuma;Nishiko Maaya;Tabunoki Hiroko;Kobayashi Kazuya;Matsuura Kenji;Iwabuchi Kikuo;Yoshimura Jin
自我牺牲在有机体中是非常罕见的。在这里，我们报告了一个新的和令人震惊的病例，在一个多胚胎寄生黄蜂--花冠虫--的适应性自我牺牲中。这种黄蜂在幼虫克隆和士兵幼虫方面是独一无二的。已发现雄性克隆幼虫被雌性士兵幼虫杀死，这表明雄性和雌性幼虫之间存在两性冲突。然而，我们在这里表明，大规模杀戮适用于所有被杀的男性以及进行杀戮的女性士兵，因为杀戮通过促进克隆兄弟姐妹的繁殖来增加他们的间接适应性。我们构造了一个简单的模型，表明雌雄幼虫的最优存活雄虫数量都很少，但不是零。然后，我们将这一预测与现场数据进行比较。这些数据与模型的预测非常吻合，表明在混种中雄性的最佳杀伤率约为94%-98%。这种大规模杀戮的潜在机制几乎与其他黄蜂物种中发生的局部争夺配偶的机制相同。在产卵期间母性比的控制，这在其他膜翅目中是众所周知的，但在这种多胚胎黄蜂中是不可能的。因此，为了最大化女性杀手和男性受害者的健康，这种大规模杀戮是必要的，这可以被视为多细胞生物体中程序性细胞死亡的类比。
Self-sacrifice is very rare among organisms. Here, we report a new and astonishing case of adaptive self-sacrifice in a polyembryonic parasitic wasp,Copidosoma floridanum. This wasp is unique in terms of its larval cloning and soldier larvae. Male clone larvae have been found to be killed by female soldier larvae, which suggests intersexual conflict between male and female larvae. However, we show here that mass killing is adaptive to all the killed males as well as the female soldiers that have conducted the killing because the killing increases their indirect fitness by promoting the reproduction of their clone sibs. We construct a simple model that shows that the optimal number of surviving males for both male and female larvae is very small but not zero. We then compare this prediction with the field data. These data agree quite well with the model predictions, showing an optimal killing rate of approximately 94–98% of the males in a mixed brood. The underlying mechanism of this mass kill is almost identical to the local competition for mates that occurs in other wasp species. The maternal control of the sex ratio during oviposition, which is well known in other hymenopterans, is impossible in this polyembryonic wasp. Thus, this mass kill is necessary to maximize the fitness of the female killers and male victims, which can be seen as an analogy of programmed cell death in multicellular organisms.
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影响因子：
3.7
作者：
Brown WD;Muntz GA;Ladowski AJ
通讯作者：
Ladowski AJ
影响因子：
4.8
作者：
ODE, PJ;STRAND, MR
通讯作者：
STRAND, MR
内部的、促进死亡的机制是否具有适应性？
DOI：
--
发表时间：
2013
期刊：
影响因子：
--
作者：
J. Pepper;D. E. Shelton;A. Rashidi;Pierre M. Durand
通讯作者：
Pierre M. Durand
豌豆蚜的适应性自杀：决策对成本敏感
影响因子：
2.5
作者：
M. Mcallister;B. Roitberg;K. L. Weldon
通讯作者：
K. L. Weldon