Journal
BIOCHEMICAL SYSTEMATICS AND ECOLOGY
Volume 59, Issue -, Pages 1-7Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.bse.2015.01.004
Keywords
Biological invasions; Nile tilapia; CPUE; Fisheries; Native species; Mud carp
Funding
- Chinese Ministry of Agriculture, China [2130108]
- Guangdong Province Science and Technology plan, China [2013B020308003]
- Guangdong Oceanic & Fishery Administration, China
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Nile tilapia (Oreochromis niloticus) is one of the most widespread invasive fish species, and this species has successfully established populations in the major rivers of Guangdong Province, China. Field surveys and manipulative experiments were conducted to assess the impacts of Nile tilapia on fisheries. We determined that the increase of Nile tilapia in these rivers not only affects the CPUE (catch-per-unit-per-effort) of the fish community and native fish species but also reduces the income of fishermen. In the manipulative experiments, we observed that the growth of native mud carp decreased in the presence of Nile tilapia. Our results suggest that the invasion of Nile tilapia negatively affected the fishery economy and native fish species, and suitable control measurements should be taken. (C) 2015 Elsevier Ltd. All rights reserved.
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