DNA metabarcoding reveals diverse diet of the three-spined stickleback in a coastal ecosystem
Publication Date
October 23, 2017
Authors
Eglė Jakubavičiūtė, Ulf Bergström, Johan S. Eklöf, Quiterie Haenel, et al
Volume
12
Issue
10
Pages
e0186929
DOI
https://dx.plos.org/10.1371/journal.pone.0186929
Publisher URL
http://journals.plos.org/plosone/article?id=10.1371%2Fjournal.pone.0186929
Scopus
85032221151
Mendeley
http://www.mendeley.com/research/dna-metabarcoding-reveals-diverse-diet-threespined-stickleback-coastal-ecosystem
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Mendeley | Further Information

{"title"=>"DNA metabarcoding reveals diverse diet of the three-spined stickleback in a coastal ecosystem", "type"=>"journal", "authors"=>[{"first_name"=>"Egle", "last_name"=>"Jakubavičiute", "scopus_author_id"=>"53863653100"}, {"first_name"=>"Ulf", "last_name"=>"Bergström", "scopus_author_id"=>"56274957000"}, {"first_name"=>"Johan S.", "last_name"=>"Eklöf", "scopus_author_id"=>"8632276700"}, {"first_name"=>"Quiterie", "last_name"=>"Haenel", "scopus_author_id"=>"57190730490"}, {"first_name"=>"Sarah J.", "last_name"=>"Bourlat", "scopus_author_id"=>"6506594401"}], "year"=>2017, "source"=>"PLoS ONE", "identifiers"=>{"sgr"=>"85032221151", "doi"=>"10.1371/journal.pone.0186929", "isbn"=>"1111111111", "pmid"=>"29059215", "issn"=>"19326203", "scopus"=>"2-s2.0-85032221151", "pui"=>"618878841"}, "id"=>"6f8e4a2b-1502-32e7-94db-16f434fc94ba", "abstract"=>"The three-spined stickleback (Gasterosteus aculeatus L., hereafter 'stickleback') is a common mesopredatory fish in marine, coastal and freshwater areas. In large parts of the Baltic Sea, stickleback densities have increased >10-fold during the last decades, and it is now one of the dominating fish species both in terms of biomass and effects on lower trophic levels. Still, relatively little is known about its diet-knowledge which is essential to understand the increasing role sticklebacks play in the ecosystem. Fish diet analyses typically rely on visual identification of stomach contents, a labour-intensive method that is made difficult by prey digestion and requires expert taxonomic knowledge. However, advances in DNA-based metabarcoding methods promise a simultaneous identification of most prey items, even from semi-digested tissue. Here, we studied the diet of stickleback from the western Baltic Sea coast using both DNA metabarcoding and visual analysis of stomach contents. Using the cytochrome oxidase (CO1) marker we identified 120 prey taxa in the diet, belonging to 15 phyla, 83 genera and 84 species. Compared to previous studies, this is an unusually high prey diversity. Chironomids, cladocerans and harpacticoids were dominating prey items. Large sticklebacks were found to feed more on benthic prey, such as amphipods, gastropods and isopods. DNA metabarcoding gave much higher taxonomic resolution (median rank genus) than visual analysis (median rank order), and many taxa identified using barcoding could not have been identified visually. However, a few taxa identified by visual inspection were not revealed by barcoding. In summary, our results suggest that the three-spined stickleback feeds on a wide variety of both pelagic and benthic organisms, indicating that the strong increase in stickleback populations may affect many parts of the Baltic Sea coastal ecosystem.", "link"=>"http://www.mendeley.com/research/dna-metabarcoding-reveals-diverse-diet-threespined-stickleback-coastal-ecosystem", "reader_count"=>30, "reader_count_by_academic_status"=>{"Professor > Associate Professor"=>1, "Researcher"=>6, "Student > Doctoral Student"=>1, "Student > Ph. D. Student"=>8, "Student > Postgraduate"=>1, "Student > Master"=>5, "Other"=>1, "Student > Bachelor"=>7}, "reader_count_by_user_role"=>{"Professor > Associate Professor"=>1, "Researcher"=>6, "Student > Doctoral Student"=>1, "Student > Ph. D. Student"=>8, "Student > Postgraduate"=>1, "Student > Master"=>5, "Other"=>1, "Student > Bachelor"=>7}, "reader_count_by_subject_area"=>{"Unspecified"=>1, "Environmental Science"=>7, "Biochemistry, Genetics and Molecular Biology"=>8, "Agricultural and Biological Sciences"=>14}, "reader_count_by_subdiscipline"=>{"Agricultural and Biological Sciences"=>{"Agricultural and Biological Sciences"=>14}, "Biochemistry, Genetics and Molecular Biology"=>{"Biochemistry, Genetics and Molecular Biology"=>8}, "Unspecified"=>{"Unspecified"=>1}, "Environmental Science"=>{"Environmental Science"=>7}}, "group_count"=>2}

Scopus | Further Information

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