Journal of Dalian Ocean University  2002, Vol. 17 Issue (3): 234-239 DOI: 10.3969/j.issn.1000-9957.2002.03.010 |
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| The intercepting effects of bubble curtains with different density on Fugu rubiripes |
| CHEN Yong, ZHANG Pei-dong, ZHANG Shuo, HAO Fu-jin
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| Dept. of Marine Fisheries, Dalian Fisheries Univ. , Dalian 116023, China |
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Abstract Indoor experiments were carried out to investigate the intercepting effects of im-movable bubble curtains(IBC)with different density on Fugu rubiripes. The density of IBC was decided by air- hole spacing,air- hole diameter and air pressure. The air- hole spacing
of each IBC was 2. 5 cm and 5. 0 cm, the air- hole diameter was 1. 0 mm and the air pressure was 21. 57, 27. 46, 33. 34 and 39. 23 kPa respectively. The IBC was under-taken from a hard polyethylene pipe(16 mm i. d),fixed on the bottom middle of an experi-mental tank. The results show significantintercepting effectsof the eight IBC on the fish be-haviors observed, and the one with air- hole diameter 1. 0 mm, air- hole spacing 2. 5 cm and air pressure 27. 46 kPa was the best. The average obstructing rate was 71. 0%.
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Published: 30 December 2016
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