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Population dynamics of Aurelia sp.1 ephyrae and medusae in Jiaozhou Bay, China
Wang, Yan-Tao1,2; Sun, Song1,3
Source PublicationHYDROBIOLOGIA
AbstractThe scyphozoan Aurelia aurita (Linnaeus) s. l., is a cosmopolitan species-complex which blooms seasonally in a variety of coastal and shelf sea environments around the world. We hypothesized that ephyrae of Aurelia sp.1 are released from the inner part of the Jiaozhou Bay, China when water temperature is below 15A degrees C in late autumn and winter. The seasonal occurrence, growth, and variation of the scyphomedusa Aurelia sp.1 were investigated in Jiaozhou Bay from January 2011 to December 2011. Ephyrae occurred from May through June with a peak abundance of 2.38 +/- A 0.56 ind/m(3) in May, while the temperature during this period ranged from 12 to 18A degrees C. The distribution of ephyrae was mainly restricted to the coastal area of the bay, and the abundance was higher in the dock of the bay than at the other inner bay stations. Young medusae derived from ephyrae with a median diameter of 9.74 +/- A 1.7 mm were present from May 22. Growth was rapid from May 22 to July 2 with a maximum daily growth rate of 39%. Median diameter of the medusae was 161.80 +/- A 18.39 mm at the beginning of July. In August, a high proportion of deteriorated specimens was observed and the median diameter decreased. The highest average abundance is 0.62 +/- A 1.06 ind/km(2) in Jiaozhou Bay in August. The abundance of Aurelia sp.1 medusae was low from September and then decreased to zero. It is concluded that water temperature is the main driver regulating the life cycle of Aurelia sp.1 in Jiaozhou Bay.
KeywordAurelia Sp 1 Ephyrae And Medusae Population Dynamics Jiaozhou Bay
Indexed BySCI
WOS IDWOS:000355625400012
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Document Type期刊论文
Affiliation1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Oceanol, Jiaozhou Bay Marine Ecosyst Res Stn, Qingdao 266071, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Wang, Yan-Tao,Sun, Song. Population dynamics of Aurelia sp.1 ephyrae and medusae in Jiaozhou Bay, China[J]. HYDROBIOLOGIA,2015,754(1):147-155.
APA Wang, Yan-Tao,&Sun, Song.(2015).Population dynamics of Aurelia sp.1 ephyrae and medusae in Jiaozhou Bay, China.HYDROBIOLOGIA,754(1),147-155.
MLA Wang, Yan-Tao,et al."Population dynamics of Aurelia sp.1 ephyrae and medusae in Jiaozhou Bay, China".HYDROBIOLOGIA 754.1(2015):147-155.
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