The current status of Pacifastacus leniusculus (Dana, 1852) and their effect on aquatic macroinvertebrate communities in Hungarian watercourses

IF 2.2 3区 环境科学与生态学 Q2 ECOLOGY Aquatic Invasions Pub Date : 2022-01-01 DOI:10.3391/ai.2022.17.4.05
M. Ludányi, E. Peeters, B. Kiss, Á. Gáspár, I. Roessink, T. Magura, Z. Müller
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引用次数: 2

Abstract

The freshwater crayfish Pacifastacus leniusculus is among the most widespread invasive crayfish species in Europe. Pacifastacus leniusculus invaded Hungary around 1998 and here we investigated the recent expansion of this species and its impact on other aquatic macroinvertebrates. The colonization of watercourses throughout Europe by the signal crayfish resulted in negative impacts on the present aquatic communities. Our investigation (i.e. in Rába, Pinka, Gyöngyös-stream, Répce, Arany-stream and Strém systems) revealed that the distribution range of signal crayfish is still in expansion in the western part of Hungary and in all likelihood impacting the aquatic communities in these watercourses. Our results obviously demonstrated that signal crayfish densities were highest in habitats with gravel or coarse particulate organic matter, which seems to reflect a species-specific habitat preference. Our investigation proved that the presence of P. leniusculus had negative effects on a number of protected species such as Calopteryx virgo and Onychogomphus forcipatus next to a significant negative effect on the Odonata and Trichoptera species richness as well as on the abundances of Ephemeroptera, Odonata and Trichoptera. Our study in Hungary supports the notion of the significant negative impact of signal crayfish on native freshwater invertebrate communities throughout Europe. In order to assess whether these impacts are restricted to fast flowing waters only, an adequate monitoring plan providing more knowledge on this species with respect to biotic and abiotic preferences and aquatic macroinvertebrate composition is required.
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匈牙利水道中Pacifastacus leniusculus (Dana, 1852)的现状及其对水生大型无脊椎动物群落的影响
淡水小龙虾太平洋小龙虾是欧洲最广泛的入侵小龙虾物种之一。1998年前后,我们在匈牙利调查了该物种最近的扩张及其对其他水生大型无脊椎动物的影响。信号小龙虾在整个欧洲水道的殖民化对目前的水生群落产生了负面影响。我们的调查(即Rába、Pinka、Gyöngyös-stream、rsamuce、aranyi -stream和stramusm系统)显示,信号小龙虾在匈牙利西部的分布范围仍在扩大,并且很可能影响这些水道中的水生群落。结果表明,在含砾石或粗颗粒有机质的生境中,信号小龙虾的密度最高,这似乎反映了一种特定的栖息地偏好。结果表明,该物种的存在不仅对黄花鸟、黄花鸟等保护物种的丰富度产生负面影响,而且对黄花鸟和毛翅目物种丰富度以及蜉蝣目、黄花鸟和毛翅目物种丰富度也产生了显著的负面影响。我们在匈牙利的研究支持了信号小龙虾对整个欧洲本地淡水无脊椎动物群落产生重大负面影响的观点。为了评估这些影响是否仅限于快速流动的水域,需要一个适当的监测计划,以提供有关该物种的生物和非生物偏好以及水生大型无脊椎动物组成的更多知识。
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来源期刊
Aquatic Invasions
Aquatic Invasions ECOLOGY-MARINE & FRESHWATER BIOLOGY
CiteScore
4.30
自引率
0.00%
发文量
20
审稿时长
6-12 weeks
期刊介绍: Aquatic Invasions is an open access, peer-reviewed international journal focusing on academic research of biological invasions in both inland and coastal water ecosystems from around the world. It was established in 2006 as initiative of the International Society of Limnology (SIL) Working Group on Aquatic Invasive Species (WGAIS) with start-up funding from the European Commission Sixth Framework Programme for Research and Technological Development Integrated Project ALARM. Aquatic Invasions is an official journal of International Association for Open Knowledge on Invasive Alien Species (INVASIVESNET). Aquatic Invasions provides a forum for professionals involved in research of aquatic non-native species, including a focus on the following: • Patterns of non-native species dispersal, including range extensions with global change • Trends in new introductions and establishment of non-native species • Population dynamics of non-native species • Ecological and evolutionary impacts of non-native species • Behaviour of invasive and associated native species in invaded areas • Prediction of new invasions • Advances in non-native species identification and taxonomy
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