圆虾虎鱼与大理石纹小龙虾:外来入侵掠食者和竞争对手

IF 1.6 3区 环境科学与生态学 Q3 FISHERIES Knowledge and Management of Aquatic Ecosystems Pub Date : 2021-01-01 DOI:10.1051/KMAE/2021019
Sara Roje, Luise Richter, S. Worischka, Marek Let, Lukáš Veselý, M. Buřič
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引用次数: 4

摘要

水生生物多样性受到外来入侵物种的威胁。圆形虾虎鱼Neogobius melanostomus是一种入侵鱼类,在欧洲的大河流以及靠近它们嘴的沿海水域,大理石小龙虾原螯虾是一种高度入侵的甲壳类动物。两者都是小型的海底栖息物种,占据相似的栖息地和庇护所,并利用相似的食物来源。我们假设虾虎鱼对入侵生态系统中的本地和非本地水生动物都构成威胁。我们通过实验室实验来测试虾虎鱼对大理石纹小龙虾的攻击性和竞争力,并以此作为其他北美形成系小龙虾的模型,评估虾虎鱼对猎物大小的选择以及与大理石纹小龙虾争夺空间和住所的竞争。虾虎鱼对小龙虾表现出很强的攻击性和支配力。虾虎鱼对小龙虾幼虾的捕食受到嘴张大小的限制。在体重相近的虾虎鱼/小龙虾对中,虾虎鱼更具攻击性,尽管每只虾虎鱼都会影响另一只虾虎鱼的行为。
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Round goby versus marbled crayfish: alien invasive predators and competitors
Aquatic biodiversity is threatened by spread of invasive alien species. Round goby Neogobius melanostomus is an invasive fish in large European rivers as well as in coastal waters near their mouths and marbled crayfish Procambarus virginalis is a highly invasive crustacean. Both are small, bottom-dwelling species occupying similar habitat and shelters and utilizing similar food sources. We hypothesized that goby presents a threat to both native and non-native astacofauna in invaded ecosystems. We tested this through laboratory experiments designed to determine aggressiveness and competitiveness of goby against marbled crayfish as a model for other North American cambarid crayfish, assessing goby prey size selection and competition with marbled crayfish for space and shelter. Gobies showed high aggressiveness and dominance over the crayfish. Goby predation on juvenile crayfish was limited by mouth gape size. In goby/crayfish pairs of similar weight, gobies were more aggressive, although each affected the behavior of the other.
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来源期刊
Knowledge and Management of Aquatic Ecosystems
Knowledge and Management of Aquatic Ecosystems 环境科学-海洋与淡水生物学
CiteScore
3.70
自引率
5.60%
发文量
22
审稿时长
>12 weeks
期刊介绍: Knowledge and Management of Aquatic Ecosystems (KMAE-Bulletin Français de la Pêche et de la Pisciculture since 1928) serves as a foundation for scientific advice across the broad spectrum of management and conservation issues related to freshwater ecosystems. The journal publishes articles, short communications, reviews, comments and replies that contribute to a scientific understanding of freshwater ecosystems and the impact of human activities upon these systems. Its scope includes economic, social, and public administration studies, in so far as they are directly concerned with the management of freshwater ecosystems (e.g. European Water Framework Directive, USA Clean Water Act, Canadian Water Quality Guidelines, …) and prove of general interest to freshwater specialists. Papers on insular freshwater ecosystems and on transitional waters are welcome. KMAE is not a preferred journal for taxonomical, physiological, biological, toxicological studies, unless a clear link to ecological aspects can be established. Articles with a very descriptive content can be accepted if they are part of a broader ecological context.
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