Social and physical environment independently affect oviposition decisions in Drosophila.
Social and physical environment independently affect oviposition decisions in Drosophila.
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DOI：
10.1093/beheco/arab105
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发表时间：
2021-11
期刊：
影响因子：
--
通讯作者：
Thom MDF
中科院分区：
文献类型：
--
作者：
Churchill ER;Dytham C;Bridle JR;Thom MDF
在响应环境刺激，包括在同种的存在下的变化，基因型表现出高度的可塑性反应的行为和生理特征影响繁殖。虽然在男性中有广泛的记录，但对女性的这种反应研究较少。我们希望女性高度响应环境变化和差异分配资源，以增加后代的健身，主要贡献的母亲后代的数量，大小和发育条件。使用果蝇，我们（a）操纵暴露于同种女性，母亲可以用来预测潜在的配偶和幼虫密度的数量，和;（B）测试这是如何与潜在的产卵地点的空间分布相互作用，与女性从较高的密度预计更喜欢集群资源，可以支持大量的幼虫。我们发现，高密度的女性开始交配的速度较慢，并减少他们的交配时间，在男性中观察到的相反的效果。对产卵量有一个平行的，也许是相关的影响：以前群居的雌性比独居的雌性产的蛋少。资源斑块性也影响产卵行为，雌虫偏好聚集性基质，吸引更多雌虫产卵。然而，我们没有发现以前的住房条件和资源斑块之间的相互作用，表明女性没有感知不同的资源分布的价值不同时，暴露在环境中，可以信号预期水平的幼虫竞争。我们发现，虽然暴露于同性竞争改变了雌性的交配行为，产卵资源的分布有更大的影响产卵决策。在选择产卵数量时，雌性果蝇必须考虑物理环境和后代可能面临的竞争水平。与其他雌性一起长大的雌性交配较慢，交配时间较短，产卵较少。然而，在选择产卵地点时，产卵地点的斑块性比社会环境有更大的影响：聚集的资源吸引了更多的女性，谁奠定了更多的可用补丁。
In response to environmental stimuli, including variation in the presence of conspecifics, genotypes show highly plastic responses in behavioral and physiological traits influencing reproduction. Although extensively documented in males, such female responses are rather less studied. We expect females to be highly responsive to environmental variation and to differentially allocate resources to increase offspring fitness, given the major contribution of mothers to offspring number, size, and developmental conditions. Using Drosophila melanogaster, we (a) manipulate exposure to conspecific females, which mothers could use to anticipate the number of potential mates and larval density, and; (b) test how this interacts with the spatial distribution of potential oviposition sites, with females from higher densities expected to prefer clustered resources that can support a larger number of larvae. We found that high density females were slower to start copulating and reduced their copulation duration, the opposite effect to that observed in males. There was a parallel, perhaps related, effect on egg production: females previously housed in groups laid fewer eggs than those housed in solitude. Resource patchiness also influenced oviposition behavior: females preferred aggregated substrate, which attracted more females to lay eggs. However, we found no interaction between prior housing conditions and resource patchiness, indicating that females did not perceive the value of different resource distributions differently when exposed to environments that could signal expected levels of larval competition. We show that, although exposure to consexual competition changes copulatory behaviors of females, the distribution of oviposition resources has a greater effect on oviposition decisions. When choosing how many eggs to produce, female fruit flies must consider the physical environment and the likely level of competition their offspring will face. Females raised with other females were slower to mate, mated for less time, and laid fewer eggs. However, when choosing where to lay, patchiness of laying sites had a greater impact than social environment: clustered resources attracted more females, who laid on more of the available patches.
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影响因子：
16.8
作者：
Firth, Josh A.;Cole, Ella F.;Sheldon, Ben C.
通讯作者：
Sheldon, Ben C.
DOI：
10.1073/pnas.1906149116
发表时间：
2019-09-03
影响因子：
11.1
作者：
Hopkins, Ben R.;Sepil, Irem;Wigby, Stuart
通讯作者：
Wigby, Stuart
影响因子：
9.2
作者：
Battesti, Marine;Moreno, Celine;Mery, Frederic
通讯作者：
Mery, Frederic
DOI：
10.1098/rspb.2008.1878
发表时间：
2009-05-07
影响因子：
4.7
作者：
Bretman, Amanda;Fricke, Claudia;Chapman, Tracey
通讯作者：
Chapman, Tracey
影响因子：
4.6
作者：
Doublet, Violette;Gidoin, Cindy;Boivin, Thomas
通讯作者：
Boivin, Thomas