The egg types of <I>Calanus sinicus</I> in Xiamen Harbor of China

YANG Qing; CAO Wen-qing; LIN Yuan-shao; GUI Yue; LI Shao-jing

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YANG Qing, CAO Wen-qing, LIN Yuan-shao, GUI Yue, LI Shao-jing. The egg types of Calanus sinicus in Xiamen Harbor of China[J]. Haiyang Xuebao, 2007, 29(5): 117-122.

Citation:

YANG Qing, CAO Wen-qing, LIN Yuan-shao, GUI Yue, LI Shao-jing. The egg types of Calanus sinicus in Xiamen Harbor of China[J]. Haiyang Xuebao, 2007, 29(5): 117-122.

YANG Qing, CAO Wen-qing, LIN Yuan-shao, GUI Yue, LI Shao-jing. The egg types of Calanus sinicus in Xiamen Harbor of China[J]. Haiyang Xuebao, 2007, 29(5): 117-122.

Citation:

YANG Qing, CAO Wen-qing, LIN Yuan-shao, GUI Yue, LI Shao-jing. The egg types of Calanus sinicus in Xiamen Harbor of China[J]. Haiyang Xuebao, 2007, 29(5): 117-122.

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The egg types of Calanus sinicus in Xiamen Harbor of China

1.
Department of oceanography Xiamen University, Xiamen 361005, China
2.
Department of oceanography Xiamen University, Xiamen 361005, China;State key laboratory of Marine Environmental Science(Xiamen University), Xiamen 361005, China

Received Date: 2006-03-20
Rev Recd Date: 2007-01-24

Abstract

Abstract

Calanus sinicus, an independent species divided from C.pacificus, dominated in all main seas of China, plays the same role in China neritic ecosystem as C.finmarchicus in Atlantic.As a mega-copepod, C.sinicus has been widely studied because of its connecting link between the preceding and the following in marine food webs.In Xiamen Harbor, located opposite of Taiwan Island, C.sinicus usually appears in the late autumn or early winter and disappears at the beginning of summer.Then how can they spend the summer? Did they move into deeper waters or produce dormant eggs for oversummering? The present paper studies the egg types of C.sinicus in order to discuss whether C.sinicus produced dormant eggs.We collected female of C.sinicus by horizontal hauls with a 50cm diameter netequipped with a 500 m mesh in Xiamen Harbo revery 10~15 d from January to May in 2003 and 2004.In the laboratory, healthy females were chosen and placed individually in twenty-four wells tissue culture plate with full of sea water pumped from beach (salinity of 28~31) and filtered with fine sand.No food was supplied during culture.On the second morning, all eggs (except died eggs) newly released by the females were immediately transferred into glass slide.And the thickness of blister was measured under Olympus BH 2 LM.
- Calanus sinicus,
- egg type,
- Xiamen Harbor

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References(30)

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