Nutritional regulation influencing colony dynamics and task allocations in social insect colonies
Nutritional regulation influencing colony dynamics and task allocations in social insect colonies
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影响群居昆虫群落动态和任务分配的营养调节
DOI：
10.1080/17513758.2020.1786859
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发表时间：
2020
影响因子：
2.8
通讯作者：
Kang, Yun
中科院分区：
文献类型：
--
作者：
Rao, Feng;Rodriguez Messan, Marisabel;Marquez, Angelica;Smith, Nathan;Kang, Yun
本文采用自适应建模框架，对昆虫的营养状况（以蛋白质与碳水化合物的比例衡量）如何调节种群动态和觅食任务分配进行了建模和研究。模型的数学分析表明，育雏投入和育雏营养对群体生存和动态都有重要影响。当劳动分工和（或）营养处于中间值范围时，由于双稳定性，模型发生后向分岔并产生多个吸引子。这种双稳定性意味着群体生存需要一个阈值的种群规模。当对育雏的投入足够大或营养要求不那么严格时，蜂群往往能存活下来，否则蜂群面临崩溃。我们的模型表明，群体生存的需求是由孵化成活率决定的，这需要良好的营养状况。因此，良好的营养状况可以提高幼虫的存活率，从而增加工蜂的数量。
In this paper, we use an adaptive modeling framework to model and study how nutritional status (measured by the protein to carbohydrate ratio) may regulate population dynamics and foraging task allocation of social insect colonies. Mathematical analysis of our model shows that both investment to brood rearing and brood nutrition are important for colony survival and dynamics. When division of labour and/or nutrition are in an intermediate value range, the model undergoes a backward bifurcation and creates multiple attractors due to bistability. This bistability implies that there is a threshold population size required for colony survival. When the investment in brood is large enough or nutritional requirements are less strict, the colony tends to survive, otherwise the colony faces collapse. Our model suggests that the needs of colony survival are shaped by the brood survival probability, which requires good nutritional status. As a consequence, better nutritional status can lead to a better survival rate of larvae and thus a larger worker population.
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