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- Title
长江口东滩湿地斑尾刺虾虎鱼的栖息亚生境选择和食性差异.
- Authors
张衡; 叶锦玉; 张瑛瑛; 靳少非; 张胜茂
- Abstract
We examined the temporal and spatial variation in the abundance and diet composition of Acanthogobius ommaturus at three subhabitats (mudflat, salt marsh, and creek) of the Dongtan wetland of Yangtze Estuary with monthly field samplings from July 2015 to June 2016. The results showed that the samples of A. ommaturus were mainly composed of young individuals in the period of June-November, whereas no fish was collected during the other months. Most of the samples were collected in July (71) and only three individuals was collected in November. Most of the samples were collected (93) in creek, which was 5.2 and 4.9 times of those in mudflat and salt marsh, respectively. The diet of the A. ommaturus included 10 taxa and 30 prey species, dominated by shrimps. In the taxonomic level, the dominant preys were the Exopalaemon annandalei or other Exopalaemon sp. of shrimps, the Sesarma sp. of crabs and Micromecta quadriseta of insects. Compared with other taxonomic groups, the fish prey had relatively higher mass percentage but lower abundance percentage. The prey composition of A. ommaturus differed among subhabitats. The feeding level of A. ommaturus increased gradually from July to November and reached 3.0 in late autumn. The differences in the abundances of A. ommaturus among subhabitats would be induced by prey composition.
- Publication
Yingyong Shengtai Xuebao, 2018, Vol 29, Issue 3, p945
- ISSN
1001-9332
- Publication type
Article
- DOI
10.13287/j.1001-9332.201803.033