Feeding ecology of Hexagrammos agrammus in Lidao Rongcheng, China

Home > Archive>Volume 22, Issue 1, 2015 >88-98

Feeding ecology of Hexagrammos agrammus in Lidao Rongcheng, China
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Affiliation:Institute of Evolution and Marine Biodiversity, Ocean University of China, Qingdao 266003, China;Chinese Academy of Fishery Sciences, Yellow Sea Fisheries Research Institute, Qingdao 266071, China
Clc Number:S931
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was investigated for 743 individuals collected monthly from the Lidao Rongcheng shore reef (March 2010 and February 2011). The main results of this study are as follows. a demersal-feeding fish, had 11 prey groups with polychaeta dominating. Prey groups also included fish eggs, algae, seagrass, stomatopoda, amphipoda and other fish. The dietary composition of the prey consumed had obvious seasonal variations. While polychaeta was an important prey group across all seasons, stomatopoda and decapoda were predominant in spring, fish and crabs in summer, fish eggs and fish in autumn, while fish eggs were eaten mostly in winter. The dietary composition also had obvious ontogenetic variations: <80 mm consumed polychaeta, fish, decapoda and crabs, while >199 mm consumed fish, polychaeta and fish eggs. The feeding intensity had obvious seasonal variations, being highest in summer and lowest in winter. The feeding intensity also had obvious ontogenetic variations, reaching the highest feeding intensity in <100 mm, then decreasing with increasing standard length, and gradually increasing after >180 mm . Five samples could be identified by DNA barcoding, among which, four were identified at species level and one at genus level. Therefore, the feeding habits of display seasonal and ontogenetic variations, along with variations in species consumption and abundance.

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纪东平,卞晓东,宋娜,高天翔. 荣成俚岛斑头鱼摄食生态研究[J]. Jounal of Fishery Sciences of China, 2015,[volume_no](1):88-98

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Online: June 23,2015
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