Preliminary study on the competition in the larvae stage between <em>Aurelia aurita</em> and <em>Rhopilema esculentum</em> during a short term

CHI Xupeng; YOU Kui; MA Caihua; YUAN Yunhan; CHEN Siqing; YANG Yefan; LIU Xintian

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CHI Xupeng, YOU Kui, MA Caihua, YUAN Yunhan, CHEN Siqing, YANG Yefan, LIU Xintian. Preliminary study on the competition in the larvae stage between Aurelia aurita and Rhopilema esculentum during a short term[J]. Haiyang Xuebao, 2013, 35(6): 140-146.

Citation:

CHI Xupeng, YOU Kui, MA Caihua, YUAN Yunhan, CHEN Siqing, YANG Yefan, LIU Xintian. Preliminary study on the competition in the larvae stage between Aurelia aurita and Rhopilema esculentum during a short term[J]. Haiyang Xuebao, 2013, 35(6): 140-146.

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Preliminary study on the competition in the larvae stage between Aurelia aurita and Rhopilema esculentum during a short term

1.
Fisheries Collage Ocean University of China, Qingdao, 266003
2.
Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, 266071
3.
Weihai Ocean and Fishery Bureau, Weihai, 264200

Received Date: 2012-07-17

Abstract

Abstract

In recent years,the rise of the jellyfish pond culture covers the decrease of the traditional jellyfish fisheries production in China. And jellyfish pond cultures develop rapidly with high profits. Aurelia aurita is one of the most common jellyfish bloom species which usually occurs in the culture ponds of edible jellyfish Rhopilema esculentum and causes huge losses. However,there is little research about the interspecific competition between A. aurita and R. esculentum. In this paper,a preliminary study was finished about the short-term survival and competitive relationship among the scyphistomae,ephyrae and larvae of A. aurita and R. esculentum. The results are as follows: Only the ephyraes of A. aurita can be eaten by the scyphistomae of R. esculentum,but the ephyrae and larvae of A. aurita can not be harmed by the ephyrae or larvae of R. esculentum. On the contrary,the scyphistomae or larvae of A. aurita were harmful to the scyphistomae,ephyrae and larvae of R. esculentum. Especially the ephyrae of R. esculentum could be seriously injured. When there were shortages of food,all the ephyrae of R. esculentum were eaten. With the growth of jellyfish larvae,they gradually increase resistance to the preying pressure from predators. During the scyphistomae,ephyrae and larvae stages,A. aurita is absolutely superior to R. esculentum. In other words,it could be an important reason that A. aurita often bloomed in many sea areas and culture ponds. In the process of edible jellyfish R. esculentum culturing and seedling raising,the scyphistomae,ephyrae and larvae of A. aurita should not be mixed,in order to avoid the production losses of edible jellyfish.
- Aurelia aurita,
- Rhopilema esculentum,
- larvae,
- interspecific competition

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References(29)

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