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Aggregation behavior of juvenile neptunea cumingii and eff ects on seed production

Journal of Oceanology and Limnology 2020年第5期38卷 1590-1598页

作者： YU Zhenglin HU Zhi SONG Hao XU Tao YANG Meijie ZHOU Cong ZHANG Tao CAS Key Laboratory of Marine Ecology and Environmental Sciences Institute of OceanologyChinese Academy of SciencesQingdao 266071China Laboratory for Marine Ecology and Environmental Science Qingdao National Laboratory for Marine Science and TechnologyQingdao 266237China Center for Ocean Mega-Science Chinese Academy of SciencesQingdao 266071China CAS Engineering Laboratory for Marine Ranching Institute of OceanologyChinese Academy of SciencesQingdao 266071China University of Chinese Academy of Sciences Beijing 100049China Shandong Fisheries Technology Extension Center Jinan 250013China

neptunea cumingii is an important nutrition-rich economic species in *** of *** suff er from high mortality at low temperatures,which has proved a limiting factor in raising seedlings in artifi cial *** research has shown that *** displays aggregation behavior in response to adverse environmental ***,we determined the eff ects of temperature,food,size of juvenile snails,substratum type,and density of juvenile snails on the aggregation behavior of *** show that,at a low(4°C)or a high(22°C)temperature,juvenile snails adjusted to the inhospitable environment by exhibiting increased aggregation ***,their aggregation behaviors diff ered at these two *** was no signifi cant diff erence in the aggregation rate,but the typical aggregation size was larger at 4°C than at 22°*** 10°C or 16°C,aggregation behavior of juvenile snails *** increased in the satiation treatment at 10°C and 16°***-sized juveniles tended to have higher aggregation rates(92.22%)and a larger typical aggregation *** juveniles were distributed in the bottom of shaded substrata.A larger typical aggregation size or higher density signifi cantly reduced the mortality of juvenile snails at a low temperature(4°C).These results broaden our understanding of gastropod aggregation behavior and can be used to develop and improve commercial breeding strategies and resource recovery for ***.

关键词： aggregation behavior neptunea cumingii environmental temperature survival rate seed production

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