Thermal-metabolic relationships in hatchling snapping turtles during simulated seasonal cooling

There is limited information available regarding metabolic rates (MR) in many species or life stages of turtles. I measured MR (as O2 consumption) in fasted hatchling snapping turtles (Chelydra serpentina) at 5 to 25 °C.  The relationships between temperature and MR (per capita and per gram wet body mass) were exponential and linearized by Log10 transformations. The relative change in MR over a 10 °C range (Q10) varied with the ranges of temperatures compared and ranged from Q10, 15 to 5 = 3.6 to Q10, 25 to 15 = 9.6 to 9.9, for per capita and per gram values, respectively. The high Q10 values observed here demonstrate reductions in metabolic activity with declining temperatures that are two to three times the predicted value.  Such a strong thermal dependence of MR suggests a rapid response to seasonal changes, facilitating energy conservation during cooling periods and growth during warming periods in this temperate reptile., Data are mean values per animal from assays of metabolic rates, measured as oxygen consumption. Data are given in per capita and per gram rates.  Units for temperature = degrees Celcius; Units for wet mass = grams; Units for per capita metabolic rates = ul O2/ minute; Units for per gram metabolic rates = ul O2/ gram minute. Log transformed data were transformed by Log10. , , # Metabolic rates versus temperature - hatchling snapping turtles

[https://doi.org/10.5061/dryad.69p8cz993](https://doi.org/10.5061/dryad.69p8cz993)

## Description of the data and file structure

Data are average oxygen consumption rates expressed as per capita and per gram values. Measurements were made at four temperatures. Temperature units = degrees Celsius. Units for mass = grams; Units for per capita metabolic rates = ul O2/minute; Units for per gram metabolic rates = ul O2/gram minute.Â

目前，关于许多龟类物种或其生活史阶段的代谢率（metabolic rate, MR）信息相对匮乏。我测定了禁食状态下的稚龄鳄龟（Chelydra serpentina）在5至25摄氏度条件下的MR（以氧气消耗量表示）。温度与MR（单位个体及单位湿重）之间的关系呈指数型，经Log10转换后可线性化。在10摄氏度范围内MR的相对变化（温度系数，Q10）随所比较的温度区间不同而变化：单位个体MR的Q10（15至5℃）为3.6，单位湿重MR的Q10（25至15℃）为9.6至9.9。本研究中观测到的高Q10值表明，随着温度降低，代谢活动的下降幅度是预测值的2至3倍。这种温带爬行动物的MR对温度具有强烈依赖性，这意味着它能快速响应季节变化，从而在降温期节约能量，并在升温期促进生长。

数据为每只动物代谢率测定的平均值（以氧气消耗量衡量），包含单位个体及单位湿重两种速率形式。温度单位=摄氏度；湿重单位=克；单位个体代谢率单位=微升氧气/分钟；单位湿重代谢率单位=微升氧气/克·分钟。对数转换数据采用Log10转换。

# 稚龄鳄龟的代谢率与温度关系

[https://doi.org/10.5061/dryad.69p8cz993](https://doi.org/10.5061/dryad.69p8cz993)

## 数据及文件结构描述

数据为平均氧气消耗速率，包含单位个体及单位湿重两种形式。测定在四个温度条件下进行。温度单位=摄氏度；体重单位=克；单位个体代谢率单位=微升氧气/分钟；单位湿重代谢率单位=微升氧气/克·分钟。