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ICES Journal of Marine Science: Journal du Conseil Advance Access originally published online on September 18, 2007
ICES Journal of Marine Science: Journal du Conseil 2007 64(8):1592-1597; doi:10.1093/icesjms/fsm137
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© 2007 International Council for the Exploration of the Sea. Published by Oxford Journals. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

The rise and fall of electrical beam trawling for shrimp in the East China Sea: technology, fishery, and conservation implications

Congda Yu1, Zhihai Chen1, Lianyuan Chen1 and Pingguo He2,

1 Zhejiang Ocean University, Zhoushan, Zhejiang 316004, People's Republic of China
2 Institute for the Study of Earth, Oceans and Space and NH Sea Grant, University of New Hampshire, Durham, NH 03824, USA

Correspondence to P. He: tel: +1 603 862 3154; fax: +1 603 862 0243; e-mail: pingguo.he{at}unh.edu

Yu, C., Chen, Z., Chen, L., and He, P. 2007. The rise and fall of electrical shrimp beam trawling in the East China Sea: technology, fishery, and conservation implications. – ICES Journal of Marine Science, 64: 1592–1597.

Since the 1980s, shrimp beam trawling has flourished in inshore waters of the East China Sea (ECS) off Zhejiang Province. By 2000, there were more than 10 000 beam trawlers operating in the area. The fishery targets several species of shrimp, including Parapenaeopsis hardwickii, Solenocera crassicornis, Parapenaeus fissuroides, and Trachypenaeus curvirostris. In the early 1990s, electrical beam trawls using pulse generators, powered either from the vessel or from underwater battery packs, became popular in the fishery. As a result of this new technology, the catch rates of shrimp, especially the burrowing shrimp species, increased. At its peak usage, there were more than 3000 vessels using electrical beam trawls in Zhejiang Province and another 500 or more in the adjacent provinces of Jiangsu and Fujian. This technology was also widespread along the Chinese coast, but a lack of regulation resulted in the misuse of electrical pulse parameters that caused damage to juvenile shrimps and other benthic species. In 2001, this fishing method was banned from the waters off Zhejiang Province, and subsequently in other parts of the ECS. This paper reviews the research on electrical beam trawls, the fishery, and fishery-management issues associated with this new technology.

Keywords: beam trawl, electrical stimulus, shrimp, shrimp electrical pulse stimulius apparatus

Received 15 September 2006; accepted 16 July 2007; advance access publication 18 September 2007.


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