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首页> 外文期刊>Journal of Insect Conservation >Vegetation composition and structure are important predictors of oviposition site selection in an alpine butterfly, the Mountain Ringlet Erebia epiphron
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Vegetation composition and structure are important predictors of oviposition site selection in an alpine butterfly, the Mountain Ringlet Erebia epiphron

机译：植被组成和结构是在高山蝴蝶中的产卵场所选择的重要预测因子，山脉Erebia Epiphron

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摘要

Knowledge of species' ecological requirements is key for designing effective conservation management. In butterflies, the needs of larval stages are often the most specialised part of the life-cycle, but for many species information on this is lacking. The Mountain Ringlet Erebia epiphron is a cold-adapted butterfly found in alpine grasslands in mountainous regions of Europe. Efforts to devise conservation strategies for this climate change-threatened species are hampered due to its basic ecology being poorly understood. Here, we describe a study on the autecology of Mountain Ringlets at sites across its British distribution, focusing on the habitat preferences of egg-laying females as a proxy for larval preferences. Female Mountain Ringlets placed their eggs predominantly on Nardus stricta and Festuca ovina, but also on several other host plant species, suggesting larvae may be more broadly polyphagous than previously realised. Sites chosen for eggs had higher abundance of larval host plants, intermediate leaf litter cover, and lower cover of grass tussocks than random locations, as well as a shorter and sparser grass sward. Although the main host plant is ubiquitous in upland areas of Britain, our findings suggest that this butterfly's egg and larval stages have specialised ecological requirements, requiring specific microhabitat features characterised by a narrow range of vegetation composition and structural characteristics. Many habitat associations are liable to be explicable as adaptations to ensure placement of eggs and larvae in sites within optimal (warm or buffered) microclimates. We tentatively suggest that the distribution of Mountain Ringlets in the landscape is thermally-constrained.
机译：物种生态要求的知识是设计有效保护管理的关键。在蝴蝶，幼虫阶段的需要通常是生命周期最专业的部分，但对于许多物种信息缺乏。山脉Erebia Epiphron是一种在欧洲山区的高山草原中发现的冷敷蝴蝶。由于其基本生态学理解，因此受到这种气候变化威胁物种的保护策略的努力受到阻碍。在这里，我们描述了对英国分布的山脉自身生态的研究，重点关注鸡蛋女性的栖息地偏好作为幼虫偏好的代理。女山山脉主要放在Nardus stricta和Festuca ovina上，还在其他几个宿主植物物种上放置鸡蛋，表明幼虫可能比以前实现的更广泛的多晶硅。选择为鸡蛋的遗址具有较高丰富的幼虫宿主植物，中间叶垃圾覆盖物，以及比随机地点的草丛的下盖，以及较短和稀疏的草草地。虽然主要寄主植物在英国的高地地区普遍存在，但我们的研究结果表明，这种蝴蝶的鸡蛋和幼虫阶段具有专门的生态要求，需要特异性的微藻特征，其特征在于窄范围的植被组成和结构特征。许多栖息地协会易于可脱钙，以确保在最佳（热或缓冲的）微亚亚亚亚亚亚亚亚亚亚亚亚亚亚亚亚麻籽中浸入位点中的鸡蛋和幼虫。我们暂时表明，景观中山脉的分布是热限制的。

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