SCSIO OpenIR  > 中科院海洋生物资源可持续利用重点实验室
Unexpected prey of juvenile spotted scat (Scatophagus argus) near a wharf: The prevalence of fouling organisms in stomach contents
Lin, Xianzhi1; Hu, Simin; Liu, Sheng; Huang, Hui2
2018
Source PublicationECOLOGY AND EVOLUTION
ISSN2045-7758
Volume8Issue:16Pages:8547
AbstractA knowledge of fish diets can contribute to revealing the trophic role and ecological function of species in aquatic ecosystems. At present, however, there are no efficient or comprehensive methods for analyzing fish diets. In this study, we investigated the diets of juvenile Scatophagus argus collected near a wharf in Daya Bay, China, by dissection and high-throughput sequencing (HTS) using the 18S rDNA V4 region. Microscopy disclosed large amounts of bryozoans and unrecognizable detritus. In contrast, HTS analysis indicated that the fish diets were considerably more diverse than visual inspection suggested. After eliminating fish sequences, approximately 17,000 sequences from taxa in nine phyla (Ciliophora, Bryozoa, Annelida, Bacillariophyta, Chlorophyta, Arthropoda, Dinoflagellata, Tunicata, and Phaeophyta) were identified from the analysis of stomach contents. Twenty-one food categories were identified, most of which (95.2%) were benthic fouling organisms that could easily be collected around wharfs. These consisted of bryozoans (31.9%), ciliates (45.7%), polychaetes (14.6%), and green algae (3.0%). Therefore, to adapt to anthropogenic habitat modification, the fish had probably shifted from planktonic to benthic feeding. The prevalence of fouling organisms in the stomachs of juvenile S.argus indicates that the fish have responded to habitat changes by widening their food spectrum. This adaptation may have increased their chances of survival. The fouling organisms that inhabit highly perturbed coastal ecosystems could represent a food source for animals at higher trophic levels. Our results accordingly suggest that human activity might significantly influence fish feeding behavior and material transfer along the food chain.
DepartmentLMB
Keyword18S rDNA dietary analysis high-throughput sequencing juvenile fish
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/17649
Collection中科院海洋生物资源可持续利用重点实验室
Affiliation1.Chinese Acad Sci, South China Sea Inst Oceanol, Guangdong Prov Key Lab Appl Marine Biol, Key Lab Trop Marine Bioresources & Ecol, Guangzhou, Guangdong, Peoples R China
2.Univ Chinese Acad Sci, Beijing, Peoples R China
3.Chinese Acad Sci, Trop Marine Biol Res Stn Hainan, Sanya, Peoples R China
Recommended Citation
GB/T 7714
Lin, Xianzhi,Hu, Simin,Liu, Sheng,et al. Unexpected prey of juvenile spotted scat (Scatophagus argus) near a wharf: The prevalence of fouling organisms in stomach contents[J]. ECOLOGY AND EVOLUTION,2018,8(16):8547, 8554.
APA Lin, Xianzhi,Hu, Simin,Liu, Sheng,&Huang, Hui.(2018).Unexpected prey of juvenile spotted scat (Scatophagus argus) near a wharf: The prevalence of fouling organisms in stomach contents.ECOLOGY AND EVOLUTION,8(16),8547.
MLA Lin, Xianzhi,et al."Unexpected prey of juvenile spotted scat (Scatophagus argus) near a wharf: The prevalence of fouling organisms in stomach contents".ECOLOGY AND EVOLUTION 8.16(2018):8547.
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