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Non-native populations and global invasion potential of the Indian bullfrog Hoplobatrachus tigerinus : a synthesis for risk-analysis
Biological Invasions ( IF 2.8 ) Pub Date : 2020-09-09 , DOI: 10.1007/s10530-020-02356-9
Nitya Prakash Mohanty , Angelica Crottini , Raquel A. Garcia , John Measey

Invasive amphibians have considerable ecological and socio-economic impact. However, strong taxonomic biases in the existing literature necessitate synthesizing knowledge on emerging invaders. The Indian bullfrog, Hoplobatrachus tigerinus, a large dicroglossid frog (snout to vent length: up to 160 mm), is native to the Indian sub-continent. Despite the high likelihood of invasion success for H. tigerinus, based on the species’ natural history traits and human use, the status of its non-native populations and global invasion potential has not yet been assessed. In this paper, we provide a profile of H. tigerinus as an invasive species to aid in risk analyses and management of existing populations. We review the available knowledge on non-native populations of H. tigerinus and model its potential distribution in the non-native range and globally; finally, we evaluate its ecological and socio-economic impact using standard impact classification schemes. We confirm successful invasions on the Andaman archipelago and Madagascar. The ensemble species distribution model, with ‘good’ predictive ability and transferability, predicts tropical regions of the world to be climatically suitable for the species. Considering potential for propagule pressure, we predict the climatically suitable Mascarene Islands, Malaysia and Indonesia, and East Africa to likely be recipients of bridgehead invasions. We assign the species two impact scores: both socio-economic and environmental scores were ‘moderate’ with ‘medium’ confidence levels in our assessment. Finally, this synthesis outlines the invasion process of the genus Hoplobatrachus, which is an emerging group of amphibian invaders.



中文翻译:

印度牛蛙Hoplobatrachus tigerinus的非本地人口和全球入侵潜力:风险分析的综合

入侵的两栖动物具有相当大的生态和社会经济影响。然而,在现有文献中强烈的分类学偏见需要综合有关新兴入侵者的知识。印度牛蛙Hoplobatrachus tigerinus是一种大型双翅蛙(洞口长至160 mm),是印度次大陆的原生动物。尽管根据该物种的自然历史特征和人类使用情况,虎人种入侵成功的可能性很高,但尚未评估其非本地种群的状况和全球入侵潜力。在本文中,我们提供了虎皮草作为入侵物种的概况,以帮助对现有种群进行风险分析和管理。我们回顾了有关非本地人口的可用知识虎耳草并模拟其在非本地范围和全球范围内的潜在分布;最后,我们使用标准影响分类方案评估其生态和社会经济影响。我们确认成功入侵了安达曼群岛和马达加斯加。具有“良好”预测能力和可转移性的总体物种分布模型预测世界上的热带地区在气候上适合该物种。考虑到潜在的传播压力,我们预测气候适宜的玛斯卡琳群岛,马来西亚和印度尼西亚以及东非很可能是桥头堡入侵的受援国。我们为该物种分配两个影响评分:在我们的评估中,社会经济和环境评分均为“中等”,而置信度为“中等”。最后,此综合概述了该属的入侵过程Hoplobatrachus,这是一个新兴的两栖动物入侵者群体。

更新日期:2020-09-10
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