F2_CTmax_CTmin

This dataset contains 5 columns, including “colonyID”, “date.tt”, “thermal.tolerance.trait”, “thermal.tolerance”, and “cross”. Each row of the dataset represents the response of an individual worker acorn ant. colonyID – a unique identifier for each acorn ant colony; multiple individual workers were tested from the same colony. date.tt – the date (month/day/year) that the thermal tolerance assessment was conducted. thermal.tolerance.trait – a categorical variable describing whether the critical thermal minimum (ctmin) or critical thermal maximum (ctmax) was assessed on the individual worker ant. thermal.tolerance – a continuous numeric value describing either the ctmax or ctmin. Values are presented in units of degrees Celsius. cross – a categorical variable describing the type of cross used to generate the F2 acorn ant workers. This variable has 4 levels, including “rur-rur” which describes a cross where both parents are from rural populations; “urb-urb” which describes a cross where both parents are from urban populations; “rur-urb” which describes a cross where the mother was from a rural population and the father from an urban population; and “urb-rur” which describes a cross where the mother was from an urban population and the father was from a rural population.

本数据集共包含5个字段，分别为"colonyID"、"date.tt"、"thermal.tolerance.trait"、"thermal.tolerance"与"cross"。数据集的每一行对应一只橡果蚁工蚁个体的耐热性测试响应。各字段详细说明如下：
1. "colonyID"：每一个橡果蚁蚁群的唯一标识符，同一蚁群可提供多只工蚁个体的测试数据；
2. "date.tt"：开展耐热性评估的具体日期，格式为月/日/年；
3. "thermal.tolerance.trait"：分类变量，用于指明本次测试的是该工蚁个体的临界低温下限（critical thermal minimum, ctmin）还是临界高温上限（critical thermal maximum, ctmax）；
4. "thermal.tolerance"：连续型数值变量，对应上述ctmin或ctmax的实测值，单位为摄氏度；
5. "cross"：分类变量，用于描述培育F2代橡果蚁工蚁所采用的亲本交配类型，共包含4个水平：
- "rur-rur"：双亲均来自野外种群的交配组合；
- "urb-urb"：双亲均来自城市种群的交配组合；
- "rur-urb"：母本为野外种群、父本为城市种群的交配组合；
- "urb-rur"：母本为城市种群、父本为野外种群的交配组合。