Caterpillar loss through grassland harvest differs between two related butterfly species of conservation concern

IF 3.2 2区农林科学 Q1 ENTOMOLOGY

Insect Conservation and Diversity Pub Date : 2023-09-25 DOI:10.1111/icad.12692

Gwydion Scherer, Thomas Fartmann

引用次数: 0

Abstract

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两种相关的受保护蝴蝶物种因收割草地而损失的毛虫数量不同

温带、半自然草原是传统土地利用方式的产物，具有丰富的生物多样性。然而，由于农业工业化，这些草原严重减少。因此，在营养贫乏的草地上，一些特殊的物种，如与之密切相关的蝴蝶Nickerls贝母Melitaea aurelia Nickerl, 1850年和沼泽贝母Euphydyras aurinia (Rottemburg, 1775)(鳞翅目:蛱蝶科)，由于草地的丧失和退化，在上个世纪经历了强烈的衰退。本文首次研究了草地从割草到被割植被被清除的整个收获过程对毛虫存活的影响。为了评估存活率，我们在收获过程前后采集了物种幼虫和环境条件，并使用广义线性混合效应模型分析了结果。我们的研究表明，在一次被割草机割草的草地上，收获过程会导致大量的毛虫损失，这受(i)寄主植物的生长形式和(ii)草地收获时间的影响。因此，在采收过程中，金夜蛾的寄主植物琥珀(sucisa prantensis)失去了近一半的叶子，而晚采对已经开始冬眠的毛虫尤其有害。总体而言，与白毛杆菌相比，黄毛杆菌损失更大，而且在刈割晚的湿润草甸中损失最为严重。为了提高金银花的存活率，我们建议在冬眠开始前使用条形割草机进行刈割。补充，或者如果割草是在晚些时候完成的，至少20%的草甸应该以空间旋转的方式作为未受影响的避难所。

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来源期刊

Insect Conservation and Diversity 生物-昆虫学

CiteScore

7.70

自引率

8.60%

发文量

审稿时长

>12 weeks

期刊介绍： To publish papers of the highest scientific quality within the general area of insect (and other arthropods) conservation and diversity covering topics ranging from ecological theory to practical management. Papers are invited on the following topics: Conservation genetics; Extinction debt; Long-term conservation planning and implementation; Global implications of local or national conservation actions; Management responses of species and communities; Captive breeding programs; Comparisons of restored and natural habitats; Biogeography; Global biodiversity; Metapopulation dynamics; Climate change: impacts on distributions and range; Invasive species: impacts and control; Effects of pollution; Genetic threats to diversity by introgression; Effects of fragmentation on diversity and distribution; Impact of agricultural and forestry practices on biodiversity; Enhancing urban environments for diversity and protection; Biodiversity action plans: can we scale up from insects?; Effectiveness and choice of indicator species; Soil biodiversity and interactions with above-ground biodiversity; Ecological interactions at local levels; Ecological and evolutionary factors influencing diversity and local, regional and global scales; Sustainable livelihoods and training on the ground; Integrating science and policy.