首页 | 本学科首页   官方微博 | 高级检索  
     


Impacts of egg and larval size on survival and growth of Atlantic cod under different feeding conditions
Authors:Y. Zhao  Y. Chen   J. A. Brown
Affiliation:Department of Biology, Memorial University of Newfoundland, St John's, Newfoundland, Canada A1B 3X9;School of Marine Science, University of Maine, Orono, ME 04469, U.S.A.;Ocean Sciences Center, Memorial University of Newfoundland, St John's, Newfoundland, Canada A1C 5S7
Abstract:
Large eggs (1·38 mm) of Atlantic cod reared in the laboratory produced large larvae. However, large larvae had low survival rates. Results also indicated that the first few days' of growth of cod larvae mainly resulted in an increase in mass. Exogenous feeding tended to result in faster growth than endogenous feeding. In the delayed feeding groups (larvae not fed until 67 degree-days), larvae from large eggs grew faster than those from small eggs (1·28 mm) after feeding commenced, while there was no significant difference in growth rate within feeding groups. Compensatory growth was detected in the delayed feeding groups.
Keywords:Gadus morhua    egg size    larval size    growth and survival
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号