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棕色树蛇 (Boiga irregularis) 的生长速率变化:一种入侵性物种,受到保护的关注

Björn Lardner¹, Brian S Cade², Julie A Savidge¹

¹Department of Fish, Wildlife, and Conservation Biology Colorado State University Fort Collins Colorado USA.

Ecology and evolution

|July 15, 2025

概括

戈珀茨模型更好地预测了蛇的生长,显示雄性比雌性生长得更快. 与蛇生长和成熟度的个体差异相比,环境因素的影响较小.

科学领域:

生态生态学生态生态学
类学类学类学类学
人口动态人口动态

背景情况:

身体生长速度对于了解动物的新陈代谢,寿命和生殖成熟度至关重要,影响人口动态和管理策略.
关岛的入侵性棕树蛇 (Boiga irregularis) 呈现连续繁殖,使队列分析和生长评估复杂化.
准确的生长建模对于有效的入侵物种管理至关重要.

研究的目的:

为了比较·伯塔兰菲生长函数和戈珀茨模型在描述蛇大小轨迹方面的有效性.
模拟野生棕树蛇的生长率,并确定影响它们的因素,包括个体变异,性别和环境条件.
根据生长模型估计男性和女性的性成熟年龄.

主要方法:

利用带有规范效应的定量回归来建模270个标记的,野生的棕色树蛇的生长率.
比较·伯塔兰菲和戈默茨增长函数的模型适合性和预测准确性.
嵌入的尺寸,性别,降水量和季节性 (模拟为正弦函数) 作为增长率的预测因素.

主要成果:

与von Bertalanffy模型相比,Gompertz模型提供了优越的适合性和更现实的非对称尺寸预测.
雄性棕色树蛇的生长速度比雌性快1.051.16倍,雌性达到了较小的非对称尺寸.
在经大小调整后的生长率中,个人和性别相关的差异比降水和季节性等环境因素更为显著.

结论:

建议使用戈珀茨模型来分析蛇的生长数据,特别是在连续繁殖的物种中.
了解性别特定的生长差异和个体变异对于准确的种群建模和棕树蛇的管理至关重要.
估计的性成熟年龄有很大差异,生长速度更快的个体更早成熟,为有针对性的管理干预提供了信息.

关键词:

戈珀茨的生长函数的增长功能.年龄的年龄年龄的年龄.定量回归的定量回归方法尺寸大小尺寸大小尺寸大小尺寸大小蛇蛇蛇蛇是什么意思蛇蛇蛇 ·贝尔塔兰菲 (Bertalanffy) 是一个

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