Data from: Female effects, but no intrinsic male effects on paternity outcome in crickets

Competitive fertilization success can depend on the relative abilities of competing males to fertilize available ova, and on mechanisms of cryptic female choice that moderate paternity. Competitive fertilization success is thus an emergent property of competing male genotypes, female genotype and their interactions. Accurate estimates of intrinsic male effects on competitive fertilization success are therefore problematic. We used a cross-classified nonbreeding design in which rival male family background was standardized to partition variation in competitive fertilization success among male and female family backgrounds in the field cricket Teleogryllus oceanicus. Male effects were close to zero, supporting previous quantitative genetic designs in which male competitors were assigned at random. In contrast, some 22% of the variance in competitive fertilization success was explained by female effects, suggesting that paternity in this species is influenced strongly by cryptic female choice.竞争性受精成功率不仅取决于竞争雄性使可利用卵子受精的相对能力，亦受调控父权分配的隐蔽雌性选择（cryptic female choice）机制影响。因此，竞争性受精成功率是竞争雄性基因型、雌性基因型及其互作共同产生的涌现属性。正因如此，精准估算雄性内在效应对竞争性受精成功率的影响颇具挑战。本研究以澳夜鸣蟋（Teleogryllus oceanicus）为实验对象，采用交叉分类非繁殖实验设计，通过标准化竞争雄性的家系背景，将竞争性受精成功率的变异分解为雄性家系、雌性家系及二者互作的贡献分量。研究结果显示雄性效应值接近零，这与此前通过随机分配竞争雄性开展的定量遗传学实验设计所得结论一致。与之相反，竞争性受精成功率约22%的变异可由雌性效应解释，这表明该物种的父权分配深受隐蔽雌性选择的调控。