Social influences on body size and developmental time in the bumblebee Bombus terrestris
Social influences on body size and developmental time in the bumblebee Bombus terrestris
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社会对大黄蜂 Bombus terrestris 体型和发育时间的影响
DOI：
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发表时间：
2013
影响因子：
2.3
通讯作者：
G. Bloch
中科院分区：
文献类型：
--
作者：
H. Shpigler;Matan Tamarkin;Yael Gruber;Maayan Poleg;A. Siegel;G. Bloch
在包括大黄蜂在内的许多群居昆虫中，工蜂之间的劳动分工与体型有关，但对影响幼虫发育和最终体型的因素知之甚少。我们证实并扩展了在大黄蜂中，成蜂体型与群体年龄正相关的证据。接下来，我们进行了交叉培育实验，将卵在早期（工蜂出现之前）和后期有工蜂的群体之间交换。这些被引进的卵发育成成年后，其大小与它们没有血缘关系的同伴相似，而与它们在母巢中发育的同龄姐妹不同。详细的观察显示，在有工蜂的年轻蜂群中，蜂王照顾的后代减少了，但没有停止。接下来，我们发现工蜂数量和蜂王的存在都影响了发育中的幼虫的最终大小，但只有蜂王的影响通过缩短发育时间来调节。在被排除蜂王隔离的蜂群中，在蜂王右边的隔间里，幼鸟的发育时间更短。这些发现表明，体型的差异是由雏鸟与蜂王和工蜂的相互作用决定的，而不是由卵内的因素决定的，这些因素可能随着蜂群的发展而变化。最后，我们建立了一个模型，表明典型的工蜂数量增加和与蚁后接触的减少可以解释典型的体型增加。类似的自组织社会调节可能有助于优化其他社会性昆虫的生长和繁殖。
In many social insects, including bumblebees, the division of labor between workers relates to body size, but little is known about the factors influencing larval development and final size. We confirmed and extend the evidence that in the bumblebee Bombus terrestris the adult bee body size is positively correlated with colony age. We next performed cross-fostering experiments in which eggs were switched between incipient (before worker emergence) and later stage colonies with workers. The introduced eggs developed into adults similar in size to their unrelated nestmates and not to their same-age full sisters developing in their mother colony. Detailed observations revealed that brood tending by the queen decreases, but does not cease, in young colonies with workers. We next showed that both worker number and the queen presence influenced the final size of the developing brood, but only the queen influence was mediated by shortening developmental time. In colonies separated by a queen excluder, brood developmental time was shorter in the queenright compartment. These findings suggest that differences in body size are regulated by the brood interactions with the queen and workers, and not by factors inside the eggs that could vary along with colony development. Finally, we developed a model showing that the typical increase in worker number and the decrease in brood contact with the queen can account for the typical increase in body size. Similar self-organized social regulation of brood development may contribute to the optimization of growth and reproduction in additional social insects.
影响因子：
3.3
作者：
G. Hunt;E. Guzman‐Novoa;M. Fondrk;R. Page
通讯作者：
G. Hunt;E. Guzman‐Novoa;M. Fondrk;R. Page