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Ecological correlates of extinction proneness in tropical butterflies

机译：热带蝴蝶灭绝倾向的生态相关性

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Widespread told rapid losses of natural habitats and biodiversity have made the identification of extinction-prone species a major challenge in conservation biology. We assessed the relative importance of biologically relevant species traits (e.g., body size, ecological specialization) obtained from published records to determine the extinction probability of butterflies in a highly disturbed tropical landscape (i.e.. Singapore). We also developed a taxon-specific model to estimate the extinction Proneness of butterflies in Southeast Asia. Logistic regression analyses showed that adult habitat specialization, larval host plant specificity, geographical distribution, sexual dichromatism, and congenor density were significant and independent determinants of butterfly extinctions in Singapore. Among these traits, specificity of larval host plant and adult habitat specialization were the best correlates of extinction risks. We used this phenomenological extinction-regression model to estimate the relative extinction proneness of 416 butterfly species in Southeast Asia. Our results illustrate the utility of available taxon-specific data for a localized area in estimating Me extinction proneness of closely-related species oil a regional scale. When intensive field studies are not forthcoming especially in regions suffering from rapid biodiversity losses (e.g., southeast Asia), similar approaches could be used to estimate extinction threats for other taxonomic groups.
机译：普遍告诉我们，自然栖息地和生物多样性的迅速丧失使易灭绝物种的鉴定成为保护生物学的主要挑战。我们评估了从已公开的记录中获得的生物学相关物种特征（例如体型，生态专业化）的相对重要性，以确定在高度受干扰的热带景观（即新加坡）中蝴蝶的灭绝概率。我们还开发了特定于分类群的模型来估计东南亚蝴蝶的灭绝倾向。 Logistic回归分析表明，成年栖息地的专业化，幼虫寄主植物的特异性，地理分布，性色差和同族密度是新加坡蝴蝶灭绝的重要且独立的决定因素。在这些特征中，幼虫寄主植物的特异性和成年栖息地的专业化是灭绝风险的最佳关联。我们使用这种现象灭绝回归模型来估计东南亚416种蝶类的相对灭绝倾向。我们的研究结果表明，在一个区域范围内，密切相关物种的Me灭绝倾向在局部地区可用的分类单元特定数据有用。当特别是在生物多样性迅速丧失的地区（例如东南亚）没有进行深入的实地研究时，可以使用类似的方法来估计其他生物分类群体的灭绝威胁。

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