A review of the research on introduced freshwater fishes: new perspectives,the need for research,and management implications |
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Authors: | Mayumi Sato Yôichi Kawaguchi Jun Nakajima Takahiko Mukai Yukihiro Shimatani Norio Onikura |
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Institution: | (1) Watershed Management Laboratory, Department of Urban and Environmental Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan;(2) Faculty of Regional Studies, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan;(3) Fishery Research Laboratory, Kyushu University, Tsuyazaki 2506, Fukutsu Fukuoka, 811-3304, Japan;(4) Present address: International Research Center for Japanese Studies, Nishikyoku, 3-2 Oeyama-cho, Kyoto 610-1192, Japan;(5) Present address: Laboratory of Ecosystem Management, Division of Ecosystem Design, Institute of Technology and Science, The University of Tokushima, 2-1 Minami-josanjima, Tokushima 880-8506, Japan |
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Abstract: | Although freshwater fishes have a long history of human-induced introduction, recent globalization has accelerated worldwide
introduction events even more, and those introduced fish species are now perceived to be a major threat to ecosystems. Over
the last two decades, numerous studies have been published on introduced fish species; however, it has been challenging for
researchers to understand the magnitude of the impact and the underlying mechanism of invasions. Recently, new perspectives
in understanding invasive freshwater fish biology have been presented in a number of studies, which can be largely attributed
to advances in analytical techniques and also to a growing need for proactive analysis in management strategies. The aim of
this paper is to summarize new ecological perspectives, the need for research, and/or management implications with emphasis
on technological advances in, for example, statistics, molecular analysis, modeling techniques, and landscape analysis addressed
under the following five categories: introduction pathways, predicting spatial patterns, biotic homogenization, hybridization,
and control and eradication. The conservation of native fish fauna and the management of introduced fish species will benefit
from combining these new perspectives with fundamental studies such as those on life history and population biology. |
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