铃木果蝇的城市生态学

IF 2.5 3区 环境科学与生态学 Q2 BIODIVERSITY CONSERVATION Urban Ecosystems Pub Date : 2024-06-04 DOI:10.1007/s11252-024-01554-w
Romain Ulmer, Aude Couty, Patrice Eslin, Françoise Dubois, Emilie Gallet‐Moron, Nicolas Lamotte, Justine Pavis, Alice Samama, Fabien Spicher, Olivier Chabrerie
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引用次数: 0

摘要

摘要城市环境很容易受到非本地物种入侵的影响,有时还会助长其入侵的成功。因此,了解城市景观特征如何影响外来物种的种群动态对于理解和管理这些物种至关重要。斑翅果蝇(Drosophila suzukii)是一种高度多食性果蝇,在过去十年中已成为一个非常棘手的入侵物种。由于其对水果生产的重要危害,人们主要在农业区对其种群进行了研究,而对其在城市景观中的动态研究仍然很少。本研究的目的是通过识别驱动铃木夜蝇数量随季节和城市化梯度变化的地方和景观因素,研究城市环境在铃木夜蝇入侵成功中的作用。为此,2018年9月至2019年8月期间,在法国亚眠市的城市化梯度沿线的四个不同栖息地(城市森林、公园、河边和市中心)随机设置了526个昆虫诱捕器。我们使用GLM和多元分析方法研究了景观和当地环境变量对果蝇科物种多样性和组成的影响。我们发现,果蝇科物种丰富度和丰度受到城市化的负面影响。在果蝇群落中,亚布库拉果蝇(D. subobscura)和铃姬果蝇(D. suzukii)占主导地位,但它们的相对丰度随季节而变化。苏氏果蝇在冬季和夏季热浪期间都会在城市森林中活动。冬季,当地面被积雪覆盖时,苏氏果蝇仍活跃在这片栖息地。荆棘、灌木、土壤垃圾和枯木碎屑的覆盖率被认为是苏氏果蝇存在的重要生态指标。我们强调了城市环境的不同组成部分在铃木害虫生态学中的作用,特别是在其冬季生存方面。这些结果可用于设计城市栖息地的管理策略,以减少D. suzukii的入侵成功率。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Urban ecology of Drosophila suzukii

Abstract

Urban environments are vulnerable to the introduction of non-native species and sometimes contribute to their invasion success. Knowing how urban landscape features affect the population dynamics of exotic species is therefore essential to understand and manage these species. The spotted-wing drosophila, Drosophila suzukii, is a highly polyphagous fruit fly that has become a very problematic invasive species over the last decade. Because of its important damage on fruit production, D. suzukii populations have mainly been studied in agricultural areas, while their dynamics in urban landscape remain poorly explored. The objective of this study was to investigate the role of urban environment in the invasion success of D. suzukii by identifying local and landscape factors driving the abundance of the fly along seasons and urbanization gradients. To achieve this, 526 insect traps were randomly set in four different habitats (urban forest, park, riverside and town centre) along an urbanization gradient in the city of Amiens (France), between September 2018 and August 2019. The influence of landscape and local environmental variables on Drosophilidae species diversity and composition was examined using GLM and multivariate analyses. We found that Drosophilidae species richness and abundance were negatively impacted by urbanization. The Drosophilidae community was dominated by D. subobscura and D. suzukii, but their relative abundance varied with seasons. Drosophila suzukii used urban forest during winter and also during heat waves in summer. The fly was still active in this habitat in winter when the ground was covered with snow. The cover of brambles, shrubs, soil litter and dead wood debris were identified as valuable ecological indicators of the presence of D. suzukii. We highlight the role of the different components of urban environment in the ecology of D. suzukii, particularly with regard to its winter survival. These results could serve for designing management strategies in urban habitats in order to reduce the invasion success of D. suzukii.

Graphical Abstract

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来源期刊
Urban Ecosystems
Urban Ecosystems BIODIVERSITY CONSERVATION-ECOLOGY
CiteScore
5.70
自引率
6.90%
发文量
113
期刊介绍: Urban Ecosystems is an international journal devoted to scientific investigations of urban environments and the relationships between socioeconomic and ecological structures and processes in urban environments. The scope of the journal is broad, including interactions between urban ecosystems and associated suburban and rural environments. Contributions may span a range of specific subject areas as they may apply to urban environments: biodiversity, biogeochemistry, conservation biology, wildlife and fisheries management, ecosystem ecology, ecosystem services, environmental chemistry, hydrology, landscape architecture, meteorology and climate, policy, population biology, social and human ecology, soil science, and urban planning.
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