IOCAS-IR
Long-term monitoring of the individual self-feeding behavior of rainbow trout Oncorhynchus mykiss
Shi Ce1,2,3; Gao Xiaolong3; Liu Ying4; Wang Chunlin1,2
2019
Source PublicationJOURNAL OF OCEANOLOGY AND LIMNOLOGY
ISSN2096-5508
Volume37Issue:1Pages:344-349
Corresponding AuthorShi Ce(shice3210@126.com)
AbstractSelf-feeding device is extensively used in aquaculture farms, but for salmonids the individual feeding behavior has seldom been continuously observed. In this article, the individual self-feeding behavior of 10 rainbow trout was continuously monitored with a PIT tag record for 50 days with three replicates. The fish fell into three categories according to their feeding behavior, i.e. high triggering fish (trigger behavior more than 25% of the group, HT), low triggering fish (1%-25%, LT) and zero triggering fish (less than 1%). The results showed that in a group of 10 individual 1-2 HT fish accounted for most of the self-feeding behavior (78.19%-89.14%), which was far more than they could consume. The trigger frequency of the fish was significantly correlated with the initial body weight (P<0.01), however, no significant difference in growth rate among the HT, LT, and ZT fish was observed (P>0.05). Cosinor analysis showed that the two HT fish in the same group had similar acrophase. Though some of the HT fish could be active for 50 d, there were also HT fish decreased triggering behavior around 40 d and the high trigger status was then replaced by other fish, which was first discovered in salimonds. Interestingly, the growth of the group was not affected by the alternation triggering fish. These results provide evidence that in the self-feeding system the HT fish didn't gain much advantage by their frequent self-feeding behavior, and high trigger status of the HT fish is not only an individual character but also driven by the demand of the group. In the self-feeding system, the critical individual should be closely monitored.
Keywordself-feeding system individual feeding behavior growth feeding rhythm
DOI10.1007/s00343-019-8020-5
Indexed BySCI
Language英语
Funding ProjectNational Natural Science Foundation of China[31602208] ; K. C. Wong Magna Fund in Ningbo University ; Qingdao Post-doctoral Application Research Project
WOS Research AreaMarine & Freshwater Biology ; Oceanography
WOS SubjectLimnology ; Oceanography
WOS IDWOS:000459304100032
PublisherSCIENCE PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/155416
Collection中国科学院海洋研究所
Corresponding AuthorShi Ce
Affiliation1.Ningbo Univ, Key Lab Appl Marine Biotechnol, Minist Educ, Fac Life Sci & Biotechnol, Ningbo 315211, Zhejiang, Peoples R China
2.Collaborat Innovat Ctr Zhejiang Marine High Effic, Ningbo 315211, Zhejiang, Peoples R China
3.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
4.Dalian Ocean Univ, Coll Marine Technol & Environm, Dalian 116023, Peoples R China
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Shi Ce,Gao Xiaolong,Liu Ying,et al. Long-term monitoring of the individual self-feeding behavior of rainbow trout Oncorhynchus mykiss[J]. JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2019,37(1):344-349.
APA Shi Ce,Gao Xiaolong,Liu Ying,&Wang Chunlin.(2019).Long-term monitoring of the individual self-feeding behavior of rainbow trout Oncorhynchus mykiss.JOURNAL OF OCEANOLOGY AND LIMNOLOGY,37(1),344-349.
MLA Shi Ce,et al."Long-term monitoring of the individual self-feeding behavior of rainbow trout Oncorhynchus mykiss".JOURNAL OF OCEANOLOGY AND LIMNOLOGY 37.1(2019):344-349.
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