农业部海洋渔业资源可持续利用重点开放实验室, 山东省渔业资源与生态环境重点实验室, 中国水产科学研究院 黄海水产研究所, 山东 青岛 266071
张波(1971-), 女, 博士, 主要从事鱼类摄食生态及食物网结构的研究. E-mail: zhangbo@ysfri.ac.cn
S931
国家科技支撑计划项目(2012BAD18B01); 科技部国家重点基础研究发展计划项目(2011CB409805); 农业部公益性行业科研专项经费项目(200903005).
Key Laboratory for Sustainable Utilization of Marine Fishery Resources, Ministry of Agriculture; Key Laboratory for Fishery Resources and Eco-environment, Shandong Province; Yellow Sea Fisheries Research Institute, Chinese Acad-emy of Fishery Sciences, Qi
主要摄食虾类和鱼类鱼食性鱼类。, 10许氏平鲉的摄食发生了显著的年间变化鱼类饵料减少主要饵料种类发生改变摄食的主要饵料种类与喜食的饵料种类有一定差别, 和食物选择性的季节变化不仅受环境中饵料丰度的影响
bottom trawl surveys conducted in the Bohai Sea in August and October of 2009, stomach analysis and prey selectivity indices were used to study the feeding habits of , which is a released fish species. The results showed that fed on seven groups of more than 20 prey species, and mainly fed on shrimp and fish, accounting for 64.93%–76.59% of the total food composition, by percentage of occurrence. Thus, Alpheus japonicas and the gobiidae were the dominant prey species in August; however, Larimichthy polyactis) were the dominant prey species in October. Compared with the study performed in the 1990s, the feeding habits of have varied significantly, feeding on a higher proportion of shrimp prey and fewer fish. The dominant prey species were also different, and anchovy () was no longer the dominant prey species. Latreutes anoplonyx, and the gobiidae, but dislike small yellow croakers in August. In October, they prefer to feed on and small yellow croaker, but dislike . Influenced by the abundance of prey in the environment, there is some difference between the favorite food species and dominant prey species. Prey selectivity of is not entirely determined by the abundance of prey in the environment, but it does have a strong influence. The showed a preference for prey with low abundance in the environment, such as in August, and in October. It also selectively feeds on prey with high abundance in the environment, such as small yellow croaker and gobiidae. It can feed on with a stable proportion in August and October; however, this is not related to their abundance. The results also indicated that seasonal variations in the food composition and prey selectivity of is not only influenced by the abundance of prey in the environment, but also by nutritional requirements and prey selectivity of individual fish. increased slightly in recent surveys, and was restored to some extent by stock enhancement, yet its biomass is still less than 1% of the maximum historical biomass. Therefore, more could be released to restore biomass. The other important aim of this study was to evaluate scientifically and reasonably the ecological capacity for stock enhancement, based on food composition and prey selectivity of . According to the results of this study, combined with its biomass and the evaluation of food consumption, , 2.2 t gobiidae and 1.9 t Sebates schlegeli, the next study needs determine biomass and food consumption of those prey by other predators in the same nutritional niche
张波,李忠义,金显仕.许氏平鲉的食物组成及其食物选择性[J].中国水产科学,2014,21(1):134-141
ZHANG Bo, LI Zhongyi, JIN Xianshi. Food composition and prey selectivity of Sebastes schlegeli[J]. Journal of Fishery Sciences of China,2014,21(1):134-141
