Adaptation to monogamy influences parental care but not mating behavior in the burying beetle, Nicrophorus vespilloides.,Ecology and Evolution

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Adaptation to monogamy influences parental care but not mating behavior in the burying beetle, Nicrophorus vespilloides.
Ecology and Evolution ( IF 2.3 ) Pub Date : 2020-05-22 , DOI: 10.1002/ece3.6387
Matthew Schrader ₁ , Madolin K Keller ₁ , Garrett F Lucey ₁

Affiliation

The mating system is expected to have an important influence on the evolution of mating and parenting behaviors. Although many studies have used experimental evolution to examine how mating behaviors evolve under different mating systems, this approach has seldom been used to study the evolution of parental care. We used experimental evolution to test whether adaptation to different mating systems involves changes in mating and parenting behaviors in populations of the burying beetle, Nicrophorus vespilloides . We maintained populations under monogamy or promiscuity for six generations. This manipulation had an immediate impact on reproductive performance and adult survival. Compared to monogamy, promiscuity reduced brood size and adult (particularly male) survival during breeding. After six generations of experimental evolution, there was no divergence between monogamous and promiscuous populations in mating behaviors. Parents from the promiscuous populations (especially males) displayed less care than parents from the monogamous populations. Our results are consistent with the hypothesis that male care will increase with the certainty of paternity. However, it appears that this change is not associated with a concurrent change in mating behaviors.

中文翻译：

对一夫一妻制的适应会影响父母的照顾，但不会影响埋葬甲虫 Nicrophorus vespilloides 的交配行为。

交配系统预计会对交配和养育行为的进化产生重要影响。尽管许多研究利用实验进化来检验不同交配系统下交配行为如何进化，但这种方法很少被用来研究亲代照顾的进化。我们使用实验进化来测试对不同交配系统的适应是否涉及埋葬甲虫Nicrophorus vespilloides种群的交配和养育行为的变化。我们在六代人的时间里维持着一夫一妻制或乱交的人口。这种操作对繁殖性能和成年存活率产生了直接影响。与一夫一妻制相比，乱交减少了育雏期的规模和成虫（特别是雄性）在繁殖过程中的存活率。经过六代的实验进化，一夫一妻制和杂乱的种群在交配行为上没有差异。来自杂乱人群（尤其是男性）的父母比来自一夫一妻制人群的父母表现出更少的关心。我们的结果与男性护理将随着父子关系的确定性而增加的假设是一致的。然而，这种变化似乎与交配行为的同时变化无关。

更新日期：2020-07-25

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