Assessing the distribution and habitat suitability of Austropotamobius pallipes complex in proximity of invasive Procambarus clarkii in the Avigliana Lakes (northwest Italy): an integrated approach to ecosystem health and conservation

IF 2 3区 环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES
Alessandra Maganza, Alice Gabetti, Camilla Mossotto, Paolo Pastorino, Giuseppe Esposito, Matteo Riccardo Di Nicola, Barbara Rizzioli, Antonia Concetta Elia, Marino Prearo
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Abstract

The white-clawed crayfish (Austropotamobius pallipes complex) is a crucial species complex in European freshwater ecosystems, but its population has faced severe declines since the 1860s due to pollution, habitat loss and fragmentation. The introduction of invasive crayfish species that carry the crayfish plague (Aphanomyces astaci), a water mold, has exacerbated this decline. The Avigliana Lakes Nature Park in Piedmont, Italy, which encompasses the Great Lake, Small Lake and Mareschi wetland, has been designated a Natura 2000 site supporting A. pallipes, particularly in the tributaries of the Small Lake. The aim of this study was to assess both the presence and distribution of A. pallipes in the study area and the physicochemical and ecological characteristics of its habitats. We also evaluated the proximity of invasive crayfish Procambarus clarkii populations to A. pallipes to further current understanding of potential health impacts and support management efforts. Macroinvertebrate monitoring was used to gauge overall ecosystem health and habitat suitability for A. pallipes. The results showed that A. pallipes was present at only two out of the six monitored sites, with no visible signs of disease. Macroinvertebrate monitoring indicated good water quality, while significant differences in pH, conductivity, and nutrient levels were found. Canonical correspondence analysis highlighted key environmental factors for A. pallipes, including conductivity, total dissolved solids, and vegetation. The lack of evidence for crayfish plague within the P. clarkii population may enable more effective management strategies and reduce potential health risks to the A. pallipes population. This study emphasises the need for ongoing monitoring and targeted management to mitigate invasive species’ impacts and conserve native crayfish populations.

评估阿维利亚纳湖泊(意大利西北部)中靠近外来入侵的 Procambarus clarkii 的 Austropotamobius pallipes 复合物的分布和栖息地适宜性:生态系统健康和保护的综合方法
白爪小龙虾(Austropotamobius pallipes complex)是欧洲淡水生态系统中的一个重要物种群,但自19世纪60年代以来,由于污染、栖息地丧失和碎片化,其种群数量严重下降。携带小龙虾瘟疫(一种水霉菌)的入侵小龙虾物种的引入加剧了这种下降。位于意大利皮埃蒙特的阿维格里亚纳湖自然公园,包括大湖、小湖和Mareschi湿地,已被指定为Natura 2000保护区,特别是在小湖的支流中,支持白斑针叶松。本研究的目的是评估白桦在研究区的存在和分布及其栖息地的物理化学和生态特征。我们还评估了克氏原螯虾(Procambarus clarkii)入侵小龙虾种群与苍白棘球绦虫(A. pallipes)的接近程度,以进一步了解潜在的健康影响并支持管理工作。采用大型无脊椎动物监测的方法,对白桦尺蠖的整体生态系统健康状况和生境适宜性进行了评估。结果表明,在6个监测站点中,只有2个站点存在苍白芽孢杆菌,没有明显的疾病迹象。大型无脊椎动物监测表明水质良好,但发现pH值、电导率和营养水平存在显著差异。典型对应分析强调了白桦的关键环境因子,包括电导率、总溶解固形物和植被。缺乏证据表明在克拉氏螯虾种群中存在小龙虾鼠疫,这可能有助于制定更有效的管理策略,减少对苍白斑螯虾种群的潜在健康风险。本研究强调需要持续监测和有针对性的管理,以减轻入侵物种的影响,保护本地小龙虾种群。
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来源期刊
Aquatic Sciences
Aquatic Sciences 环境科学-海洋与淡水生物学
CiteScore
3.90
自引率
4.20%
发文量
60
审稿时长
1 months
期刊介绍: Aquatic Sciences – Research Across Boundaries publishes original research, overviews, and reviews dealing with aquatic systems (both freshwater and marine systems) and their boundaries, including the impact of human activities on these systems. The coverage ranges from molecular-level mechanistic studies to investigations at the whole ecosystem scale. Aquatic Sciences publishes articles presenting research across disciplinary and environmental boundaries, including studies examining interactions among geological, microbial, biological, chemical, physical, hydrological, and societal processes, as well as studies assessing land-water, air-water, benthic-pelagic, river-ocean, lentic-lotic, and groundwater-surface water interactions.
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