Chronology of invasion and establishment of Pterygoplichthys ambrosettii (Holmberg 1893), in the upper Paraná River basin

IF 0.7 4区 农林科学 Q4 FISHERIES
Jislaine Cristina da Silva, Gabriela Cassia Zanon Reinas, Angelo Antonio Agostinho, Andréa Bialetzki
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引用次数: 2

Abstract

Invasions of non-native fish species are generally associated with human activities that violate historically insurmountable barriers to species on local and global scales. For Pterygoplichthys ambrosettii (Holmberg 1893), invasive to the upper Paraná River basin, informations about introduction and period of occupation are uncertain. Thus, aim of this study was to establish the invasion chronology and the establishment of this species in the Upper Paraná River basin, based on long-term data (37-year sampling), in addition to evaluating its current distribution. The results indicate that P. ambrosettii was first recorded in 1997 in the Itaipu reservoir and in 2000 in the Upper Paraná River floodplain. Currently, this species is registered in 118 localities in the basin, and the fact that several of these occurrences were recorded in locals that are not accessible through upstream migration suggests their origin from the aquarium hobby. This study elucidates when and where the invasion process of by P. ambrosettii began in the Upper Paraná River floodplain, and indicates that its broad non-native distribution has exceeded the limits imposed by the geographical barriers.

Pterygoplichthys ambrosettii (Holmberg 1893)在paran河上游流域的入侵和建立年代学
非本地鱼类物种的入侵通常与人类活动有关,这些活动在当地和全球范围内打破了历史上不可逾越的物种障碍。Pterygoplichthys ambrosettii (Holmberg 1893)是一种入侵帕拉那河上游流域的物种,其传入和占领时间不详。因此,本研究的目的是在评估其目前分布的基础上,基于长期数据(37年采样)建立该物种在帕拉纳河上游流域的入侵年代学和建立。结果表明:1997年在伊泰普水库首次记录到ambrosettii, 2000年在paran河上游漫滩首次记录到ambrosettii。目前,这一物种在盆地的118个地方被记录下来,事实上,其中一些事件发生在当地,无法通过上游迁徙到达,这表明它们起源于水族馆的爱好。本研究阐明了P. ambrosettii在上帕拉那河漫滩的入侵过程始于何时何地,表明其广泛的非本地分布已经超出了地理屏障的限制。
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来源期刊
Journal of Applied Ichthyology
Journal of Applied Ichthyology 生物-海洋与淡水生物学
CiteScore
2.30
自引率
11.10%
发文量
73
审稿时长
3-8 weeks
期刊介绍: The Journal of Applied Ichthyology publishes articles of international repute on ichthyology, aquaculture, and marine fisheries; ichthyopathology and ichthyoimmunology; environmental toxicology using fishes as test organisms; basic research on fishery management; and aspects of integrated coastal zone management in relation to fisheries and aquaculture. Emphasis is placed on the application of scientific research findings, while special consideration is given to ichthyological problems occurring in developing countries. Article formats include original articles, review articles, short communications and technical reports.
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