Factors regulating population dynamics of the amphipod Ampithoe valida in a eutrophic subtropical coastal lagoon

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	Factors regulating population dynamics of the amphipod Ampithoe valida in a eutrophic subtropical coastal lagoon
	Zheng Xinqing ; Huang Lingfeng ; Huang Bangqin ; Lin Yongqing ; Huang LF(黄凌风)
刊名	http://dx.doi.org/10.1007/s13131-013-0322-4
	2013
关键词	NORTH AEGEAN SEA LIFE-HISTORY REPRODUCTIVE-BIOLOGY GAMMARUS-LOCUSTA SHALLOW ESTUARIES SOUTHERN KOREA EVROS DELTA GROWTH TEMPERATURE CRUSTACEA
英文摘要	Public Science and Technology Research Funds Projects of Ocean [201205009-3]; Key Sci-Tech Program of Xiamen City [3502Z20102004]; Year-round investigations were carried out to address the population dynamics of amphipod Ampithoe valida and its potential regulating factors in the Yundang Lagoon (a eutrophic subtropical coastal lagoon in Xiamen City, China) from October 2007 to October 2008. The results show that A. valida population was largely composed of juveniles and reached a peak abundance (12.02x10(3) ind./m(2)) in March, but sharply shrunk in July. The monthly variation pattern of A. valida seemed to follow that of Ulva lactuca which is the main food resource for A. valida, indicating a strong influence of food availability on A. valida population dynamics. Life cycle studies in laboratory indicate that A. valida adopted an r-selected life strategy, e.g., rapid growth rate (0.216-0.302 mm/d), consecutive breeding (4-10 times), short reproductive rhythm (9-17 d) and huge fecundity (24-192 eggs or 6-94 juveniles per brood), which contributed to the fast population growth of A. valida from January to March. Although temperature may also be a significant cause, A. valida could grow quickly and show normal reproductive traits (i.e., the timing of sexual differentiation or maturity, the reproductive rhythm, the number of broods all through its lifespan and offspring production) in temperature between 15-30 degrees C. Therefore, the temperature variation in the lagoon water should not account for the sharp variation of A. valida population by affecting the survival, growth and reproduction of the amphipod. However, negative correlation between water temperature and U. lactuca biomass in the lagoon suggested that temperature could have indirectly affected the population dynamics of A. valida by affecting its food availability. The authors conclude that, in the Yundang Lagoon, the population dynamics of A. valida was mainly controlled by the food availability rather than water temperature.
语种	英语
出版者	SPRINGER
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/88018]
专题	海洋环境－已发表论文
推荐引用方式 GB/T 7714	Zheng Xinqing,Huang Lingfeng,Huang Bangqin,et al. Factors regulating population dynamics of the amphipod Ampithoe valida in a eutrophic subtropical coastal lagoon[J]. http://dx.doi.org/10.1007/s13131-013-0322-4,2013.
APA	Zheng Xinqing,Huang Lingfeng,Huang Bangqin,Lin Yongqing,&黄凌风.(2013).Factors regulating population dynamics of the amphipod Ampithoe valida in a eutrophic subtropical coastal lagoon.http://dx.doi.org/10.1007/s13131-013-0322-4.
MLA	Zheng Xinqing,et al."Factors regulating population dynamics of the amphipod Ampithoe valida in a eutrophic subtropical coastal lagoon".http://dx.doi.org/10.1007/s13131-013-0322-4 (2013).