Is plasticity in field cricket mating behaviour mediated by experience of song quality?
Is plasticity in field cricket mating behaviour mediated by experience of song quality?
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田间蟋蟀交配行为的可塑性是由歌曲质量的体验介导的吗？
DOI：
10.1016/j.anbehav.2022.03.004
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发表时间：
2022
期刊：
影响因子：
2.5
通讯作者：
Zuk, Marlene
中科院分区：
文献类型：
--
作者：
Tanner, Jessie C.;Johnson, Emily R.;Zuk, Marlene
许多动物依靠信号来区分潜在的配偶。通过配偶选择，它们可能会为自己和后代获得健康优势，并对信号和信号器进行选择。在一些物种中，交配偏好是表型可塑性的，并由信号经验调节。太平洋野蟋蟀Teleoggrlus Ocean anicus一直是研究声学介导的表型可塑性的有效模型，因为当蟋蟀在有或没有同种信号的情况下发育时，成虫交配行为和生殖生理的许多方面都有不同的表达。一个悬而未决的问题是，在发育过程中经历的同种信号的质量是否也像在其他一些动物中那样调节成年雌性的交配偏好。我们在一个可变环境假说中测试了交配保证，该假说假设，在表达雌性交配偏好时，适应性可塑性可以保护雌性免受在首选配偶稀有或缺乏时过于挑剔的代价，同时允许在有首选配偶时进行选择性。我们在实验中操纵了养育环境中的声音信号，作为成年环境中是否有首选配偶的可靠线索。具体地说，环境在长鸣的百分比上有所不同，这是已知处于交配前性别选择下的男性广告歌曲的一个特征。当受试者达到成熟时，我们使用受试者内部的趋音性(向声音的移动)测试来测量女性对长鸣的百分比的偏好。我们在夏威夷群岛的三个岛屿上的人群中复制了我们的实验。我们发现，有证据表明，女性反应的某些指标是可塑性的，并受歌曲质量的影响，但影响是特定于群体的，并不完全与可变环境假说中的交配保证预测一致。我们的结果指出，在雌性交配偏好中，歌曲质量的可塑性是有限的。
Many animals rely upon signals to discriminate among potential mates. Through mate choice, they may gain fitness advantages for themselves and their offspring and exert selection on signals and signallers. In some species, mating preferences are phenotypically plastic and mediated by experience of signals.Teleogryllus oceanicus, the Pacific field cricket, has been a productive model for studies of acoustically mediated phenotypic plasticity because many aspects of adult mating behaviour and reproductive physiology are differentially expressed when crickets develop in the presence versus absence of conspecific signals. An open question is whether the quality of conspecific signals experienced during development also mediates the mating preferences of adult females, as it does in some other animals. We tested the mating assurance in a variable environment hypothesis, which posits that adaptive plasticity in the expression of female mating preferences could protect females from costs associated with being too selective when preferred mates are rare or absent, while allowing selectivity when preferred mates are available. We experimentally manipulated the acoustic signals in the rearing environment as a reliable cue about the availability of preferred mates in the adult environment. Specifically, environments varied in the percentage of long chirp, a trait of male advertisement song known to be under precopulatory sexual selection. When subjects reached maturity, we used a within-subjects phonotaxis (movement towards sound) assay to measure female preferences for the percentage of long chirp. We replicated our experiment in populations from three islands of the Hawaiian Archipelago. We found evidence that some measures of female response are plastic and mediated by song quality, but effects were population specific and not entirely consistent with the predictions of the mating assurance in a variable environment hypothesis. Our results point to limited song quality-mediated plasticity in female mating preferences.
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