Invasion and Morphological Variation of the Non- Indigenous Barnacle Chthamalus challengeri(Hoek, 1883) in Yangshan Port and its Surrounding Areas  

作　　者：LIU Yan XUE Junzeng LIN Junda WU Huixian 

机构地区：[1]Key Laboratory of Exploration and Utilization of Aquatic Genetic Resources, Shanghai Ocean University,Ministry of Education [2]Department of Biological Sciences, Florida Institute of Technology

出　　处：《Journal of Ocean University of China》2015年第3期575-583,共9页中国海洋大学学报（英文版）

基　　金：supported by China’s National Special Research Fund for Non-Profit Marine Sector (No. 2013418027);Marine Biology Program of Shanghai Leading Academic Disipline (No. J50701);Marine Special Fund of Shanghai Committee of Science and Technology (No. 11dz1205000);a Doctoral Research Fund from Shanghai Ocean University (No. A2-0302-14-300084)

摘　　要：Invasive species generally possess unique characteristics that allow them to survive the invasion process in order to es- tablish and spread in new habitats. Successful invaders must resist both physical and physiological stresses associated with the changing environment. A common littoral barnacle, Chthamalus challengeri Hoek, 1883 （Crustacea, Cirripedia）, which is native to Japan, South Korea and northern China, has become established in the high-littoral zone adjacent to Yangshan Port, Shanghai, China. A comparison of the morphology of Chthamlus species from Zhoushan archipelago with previous description indicates the occur- rence of C. challengeri. The new immigrant becomes a dominant species in certain high-intertidal habitats of the adjacent area to of Yangshan Port. C. challengeri was found in part of sampling sites in Zhoushan in 2010; however, it dispersed to all the eleven sam- piing sites in 2012. Densities of C.challengeri had increased over 10 times in the last 2 years, with the highest mean value reaching 39533 ± 6243 ind. m-2 in the new habitat. The specific ratios of both operculum area （Sa） to base area （SA） and average height of pa- rietal plates （H） to length of base （L） revealed that C. challengeri displays morphological changes to resist stronger currents in the new habitats for invasion.Invasive species generally possess unique characteristics that allow them to survive the invasion process in order to establish and spread in new habitats. Successful invaders must resist both physical and physiological stresses associated with the changing environment. A common littoral barnacle, Chthamalus challengeri Hoek, 1883(Crustacea, Cirripedia), which is native to Japan, South Korea and northern China, has become established in the high-littoral zone adjacent to Yangshan Port, Shanghai, China. A comparison of the morphology of Chthamlus species from Zhoushan archipelago with previous description indicates the occurrence of C. challengeri. The new immigrant becomes a dominant species in certain high-intertidal habitats of the adjacent area to of Yangshan Port. C. challengeri was found in part of sampling sites in Zhoushan in 2010; however, it dispersed to all the eleven sampling sites in 2012. Densities of C.challengeri had increased over 10 times in the last 2 years, with the highest mean value reaching 39533 ± 6243 ind. m-2 in the new habitat. The specific ratios of both operculum area(Sa) to base area(SA) and average height of parietal plates(H) to length of base(L) revealed that C. challengeri displays morphological changes to resist stronger currents in the new habitats for invasion.

关 键 词：Chthamalus challengeri marine alien species morphological variation Yangshan Port INVASION 

分 类 号：Q16[生物学—普通生物学]