Preliminarily study on the maximum handling size, prey size and species selectivity of growth hormone transgenic and non-transgenic common carp Cyprinus carpio when foraging on gastropods

作     者：ZHU Tingbing ZHANG Lihong ZHANG Tanglin WANG Yaping HU Wei OLSEN Rolf Eric ZHU Zuoyan 朱挺兵;张丽红;张堂林;汪亚平;胡炜;OLSEN Rolf Eric;朱作言

作者机构：State Key Laboratory of Freshwater Ecology and BiotechnologyInstitute of HydrobiologyChinese Academy of Sciences Wuhan 430072China Yangtze River Fisheries Research lnstituteChinese Academy of Fisheries Science Wuhan 430223China Department of BiologyNorwegian University of Science and Technology7491 TrondheimNorway 

出 版 物：《Journal of Oceanology and Limnology》 (海洋湖沼学报（英文）)

年 卷 期：2018年第36卷第4期

页      面：1425-1433页

核心收录：

学科分类：090801[农学-水产养殖] 0710[理学-生物学] 071010[理学-生物化学与分子生物学] 081704[工学-应用化学] 07[理学] 0908[农学-水产] 08[工学] 0817[工学-化学工程与技术] 09[农学] 

基　　金：Supported by the National Natural Science Foundation of China(Nos.31200423,30970553) the National Special Research Fund for Non-Profit Sector(Agriculture)(No.201203081) the National Key Technology R&D Program of China(No.2015BAD13B02) 

主　　题：transgenic fish Cyprinus carpio L. fast growth predation ability prey selectivity 

摘      要：The present study preliminarily examined the differences in maximum handling size, prey size and species selectivity of growth hormone transgenic and non-transgenic common carp Cyprinus carpio when foraging on four gastropods species( Bellamya aeruginosa, Radix auricularia, Parafossarulus sinensis and Alocinma longicornis) under laboratory conditions. In the maximum handling size trial, five fish from each age group(1-year-old and 2-year-old) and each genotype(transgenic and non-transgenic) of common carp were individually allowed to feed on B. aeruginosa with wide shell height range. The results showed that maximum handling size increased linearly with fish length, and there was no significant difference in maximum handling size between the two genotypes. In the size selection trial, three pairs of 2-year-old transgenic and non-transgenic carp were individually allowed to feed on three size groups of B. aeruginosa. The results show that the two genotypes of C. carpio favored the small-sized group over the large-sized group. In the species selection trial, three pairs of 2-year-old transgenic and non-transgenic carp were individually allowed to feed on thin-shelled B. aeruginosa and thick-shelled R. auricularia, and five pairs of 2-year-old transgenic and non-transgenic carp were individually allowed to feed on two gastropods species( P. sinensis and A. longicornis) with similar size and shell strength. The results showed that both genotypes preferred thin-shelled Radix auricularia rather than thick-shelled B. aeruginosa, but there were no significant difference in selectivity between the two genotypes when fed on P. sinensis and A. longicornis. The present study indicates that transgenic and non-transgenic C. carpio show similar selectivity of predation on the size-and species-limited gastropods. While this information may be useful for assessing the environmental risk of transgenic carp, it does not necessarily demonstrate that transgenic common carp might have le