The effects of developmental temperature and inbreeding on sexually selected traits of male guppies (<em>Poecilia reticulata</em>)

Global temperatures are rising, and inbreeding is increasingly common in wild animals as populations decline. There is extensive research on inbreeding and temperature stress, but little is known about how they interact to affect sexually selected traits. We therefore investigated how developmental temperature (26°C or 30°C) and inbreeding affect male guppies (Poecilia reticulata). We reciprocally cross-bred full-siblings to create inbred and outbred fish, then measured traits under either pre-copulatory (i.e., coloration, gonopodium length, sexual attractiveness, mating behavior) or post-copulatory (i.e., sperm number, velocity) sexual selection for ~120 adult males. There was no evidence that temperature and inbreeding interact to affect trait expression; instead, their effects were additive. Males reared at 30°C were significantly less attractive to females, and made fewer sigmoid mating displays, than males reared at 26 °C. Inbred males were also less attractive, but their mating be..., , # Data from: The effects of developmental temperature and inbreeding on sexually selected traits of male guppies (*Poecilia reticulata*) Dataset DOI: [10.5061/dryad.prr4xgz2h](https://doi.org/10.5061/dryad.prr4xgz2h) ## Description of the data and file structure ### Files and variables #### File name: \"chp3_mm.csv\" * trial_no = number of mate choice/attractiveness trial * trial_date = date of mate choice/attractiveness trial * baby_id = id of individual male * dob = date of birth of individual male * date_maturity = day when male matured * crosstype = type of crossing (inbred- AA,BB), outbred (AB,BA) * breeding = type of breeding * treatment = temperature (control = C, high =T) * temperature = level of temperature (C) * family_id = id of males family * block = number of block * sex = male * choice_trialled_female_id = id of mate choice trialled stock female * choice_trialled_female_length = standard length (mm) of mate choice trialled stock female * mating_trialled_female_id = id o..., ,全球气温持续上升，野生动物种群数量下降的同时，近交（inbreeding）现象也愈发普遍。目前针对近交与温度胁迫（temperature stress）的研究已较为丰富，但二者交互作用如何影响性选择性状（sexually selected traits）的相关认知仍较为匮乏。因此本研究探究了发育温度（developmental temperature，26℃或30℃）与近交对雄性孔雀鱼（*Poecilia reticulata*）的影响。我们通过正反交全同胞个体构建近交与远交种群，随后对约120只成年雄性个体的性选择相关性状进行测定，其中交配前（pre-copulatory）性状包括体色、生殖足（gonopodium）长度、性吸引力与交配行为，交配后（post-copulatory）性状包括精子数量与运动速度。未发现温度与近交存在交互作用影响性状表达的证据，二者的效应为加性效应。相较于26℃环境下饲养的雄性个体，30℃饲养的雄性对雌性的吸引力显著更低，且其S形交配展示（sigmoid mating displays）频次更少。近交雄性的吸引力同样较弱，但它们的交配行为…… # 数据来源：《发育温度与近交对雄性孔雀鱼（*Poecilia reticulata*）性选择性状的影响》 数据集DOI：[10.5061/dryad.prr4xgz2h](https://doi.org/10.5061/dryad.prr4xgz2h) ## 数据与文件结构说明 ### 文件与变量 #### 文件名："chp3_mm.csv" - trial_no：配偶选择/吸引力试验编号 - trial_date：配偶选择/吸引力试验日期 - baby_id：雄性个体编号 - dob：雄性个体出生日期 - date_maturity：雄性成熟日期 - crosstype：交配类型（近交为AA、BB，远交为AB、BA） - breeding：繁育类型 - treatment：温度处理（对照组为C，高温组为T） - temperature：温度水平（单位：℃） - family_id：雄性家系编号 - block：区组编号 - sex：雄性 - choice_trialled_female_id：配偶选择试验所用的雌性种群编号 - choice_trialled_female_length：配偶选择试验所用雌性的标准体长（mm） - mating_trialled_female_id：交配试验所用雌性编号……