A dynamic energy budget model to describe the reproduction and growth of invasive starfish Asterias amurensis in southeast Australia
A dynamic energy budget model to describe the reproduction and growth of invasive starfish Asterias amurensis in southeast Australia
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DOI：
10.1007/s10530-018-1676-5
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发表时间：
2018-08-01
影响因子：
2.9
通讯作者：
Byrne, Maria
中科院分区：
文献类型：
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作者：
Aguera, Antonio;Byrne, Maria
引进外来物种是一种全球现象，改变了生态系统的结构和功能。入侵物种造成了巨大的经济和生态损失。入侵物种影响资源的可用性，竞争激烈，甚至导致本地物种灭绝。管理入侵物种需要了解这些物种的生态学、生理学和种群动态。由于全球气候变化和其他人为压力，环境条件正在迅速变化，迫切需要对这些物种的生活史和生理学有更全面的了解。DEB理论在捕捉生物体整个生命周期的代谢过程方面是独一无二的，因此，它是一个有用的工具来模拟生命周期的摄食、生长、繁殖以及对生物和非生物条件变化的反应。在这项工作中，我们估计了一个DEB模型的参数，Asterias amurensis。这种海星被引入塔斯马尼亚岛，被认为是澳大利亚最严重的海洋害虫，导致当地几个物种的灭绝。Asterias amurensis是一种主要的捕食者，是一种通过实现大密度来自上而下控制其猎物种群的关键物种。研究了生物和非生物因素对A.黑龙江。这里提出的DEB模型包括能量处理规则来描述性腺和幽门盲囊周期。利用模型参数探讨了金龟子种群的动态。amurensis在澳大利亚。DEB模型使我们能够模拟A. amurensis，提供了新的见解的作用，粮食供应和温度对其生命周期和繁殖策略。此外，它是一个强大的工具，风险管理已经建立的入侵人口和地区的高入侵风险。
The introduction of alien species is a global phenomenon that alters ecosystems structure and functioning. Invasive species are responsible for substantial economic and ecological losses. Invasive species impact resource availability, outcompeting and even causing extinction of native species. The management of invasive species requires knowledge on the ecology, physiology and population dynamics of these species. In a world where environmental conditions are changing fast due to global climate change and other anthropogenic stressors, a more comprehensive knowledge of the life history and physiology of these species is urgently needed. The DEB theory is unique in capturing the metabolic processes of an organism through its entire life cycle, and thus, is a useful tool to model lifetime feeding, growth, reproduction, and responses to changes in biotic and abiotic conditions. In this work, we estimated the parameters of a DEB model for Asterias amurensis. This starfish was introduced in Tasmania and is considered the most serious marine pest in Australia where it has caused local extinctions of several species. Asterias amurensis is a major predator and is a keystone species exerting top-down control of its prey populations by achieving large densities. We determined the influence of biotic and abiotic factors on the performance of A. amurensis. The DEB model presented here includes energy handling rules to describe gonad and pyloric caeca cycles. Model parameters were used to explore population dynamics of populations of A. amurensis in Australia. The DEB model allowed us to characterise the ecophysiology of A. amurensis, providing new insights on the role of food availability and temperature on its life cycle and reproduction strategy. Moreover it is a powerful tool for risk management of already established invasive populations and of regions with a high invasion risk.