data for dryad_JEB

Dataset Key: 1. Is nest-guarding dependent upon nest location? This experiment tested whether the propensity of female lizards to attack egg-eating snakes varied depending upon whether the female was in the nest-site in which she originally laid eggs, or displaced to a novel site located nearby. We tested each female twice: once after displacing the female to a novel nest site located approximately 120 cm from the nest in which she originally laid eggs, and again after the female returned to the original nest. 2. Effects of recent disturbance. We tested for effects of recent disturbance (i.e., moving the female to a novel nest-site) by monitoring the anti-predator responses of an additional 40 egg-guarding females that were disturbed and then immediately tested against an intruding snake. Disturbance consisted of removing a female from her original nest hole, measuring and weighing it, and then returning it to the same hole. Immediately thereafter we encouraged a snake to enter the nest hole. 3. Will females guard conspecific eggs? This set of experiments tested the hypothesis that females can recognize their own eggs, which should result in females failing to defend the eggs of a conspecific. We removed the eggs from nest-guarding females (N = 28, clutch size ranging from 6-8) and immediately either returned the same eggs to the nest (N = 14 females) or replaced them with the same number of eggs from a different female (N = 14 females). We then introduced a snake and recorded the response of each female. 4. Do females defend their shelter-site prior to laying eggs? We re-visited a different set of trials conducted by Huang (2006; Huang, W.-S. 2006. Parental care in the long-tailed skink, Mabuya longicaudata on a tropical Asian island. Animal Behaviour 72:791-795.) on female long-tailed skinks to determine whether reproductive status influences anti-predator behavior towards egg-eating snakes. We divided the 107 females from Huang (2006) according to whether they were gravid (N = 12) or not gravid (N = 95). Female lizards were then tested against an intruding snake and the lizard’s response was recorded.

本数据集涵盖四项核心实验，具体如下：
1. 巢守护行为是否依赖于巢位？本实验旨在检验雌性蜥蜴攻击食卵蛇的倾向，是否取决于其是否处于自身产卵的原巢位，或是被转移至附近的新巢位。我们对每只雌性蜥蜴开展两次测试：一次是将其转移至距离原产卵巢约120厘米的新巢位后进行测试，另一次是待其返回原巢后再次测试。
2. 近期干扰的效应。我们通过监测额外40只护卵雌性蜥蜴在受到干扰后立即遭遇入侵蛇类时的反捕食反应，来验证近期干扰（即将雌性转移至新巢位）的影响。本次干扰操作流程为：将雌性蜥蜴从其原巢洞中取出，测量其形态参数并称重，随后将其放回原巢洞。操作完成后，我们即刻引导蛇类进入巢洞。
3. 雌性蜥蜴是否会守护同种其他个体的卵？本系列实验旨在检验"雌性蜥蜴可识别自身所产卵"这一假说，该假说预期雌性不会防御同种其他个体的卵。我们从28只护卵雌性蜥蜴的巢中移除卵（单窝卵数范围为6~8枚），随后即刻将相同的卵放回原巢（对应14只雌性），或用来自另一只雌性的相同数量卵替换原卵（对应14只雌性）。之后我们引入蛇类，记录每只雌性的行为反应。
4. 雌性蜥蜴是否会在产卵前守护其栖息位点？我们重新分析了Huang（2006）开展的一组独立实验（Huang, W.-S. 2006. 热带亚洲岛屿上的长尾石龙子（Mabuya longicaudata）的亲代抚育行为. 《动物行为》, 72:791-795.），以探究繁殖状态是否会影响雌性长尾石龙子对食卵蛇的反捕食行为。我们将Huang（2006）研究中的107只雌性蜥蜴分为两组：怀卵组（N=12）与非怀卵组（N=95）。随后让每只雌性蜥蜴遭遇入侵蛇类，并记录其行为反应。