Diet and life history reduce interspecific and intraspecific competition among three sympatric Arctic cephalopods

Trophic niche and diet comparisons among closely sympatric marine species are important to understand complex food webs, particularly in regions most affected by climate change. Using stable isotope analyses, all ontogenetic stages of three sympatric species of Arctic cephalopods (genus Rossia ) wer...

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Bibliographic Details
Published in:Scientific reports 2020-12, Vol.10 (1), p.21506-11, Article 21506
Main Authors: Golikov, Alexey V., Ceia, Filipe R., Sabirov, Rushan M., Batalin, Georgii A., Blicher, Martin E., Gareev, Bulat I., Gudmundsson, Gudmundur, Jørgensen, Lis L., Mingazov, Gazinur Z., Zakharov, Denis V., Xavier, José C.
Format: Article
Language:English
Subjects:
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Animal behavior
Animals
Arctic Regions
Cephalopoda - metabolism
Climate Change
Climate prediction
Competition
Decapodiformes - genetics
Decapodiformes - metabolism
Diet
Ecosystem
Ecosystems
Food Chain
Food webs
Genetic Speciation
Habitat utilization
Humanities and Social Sciences
Interspecific
Invertebrates
Isotopes
Life history
multidisciplinary
Niches
Nutritional Status
Ontogeny
Rossia
Rossia megaptera
Rossia moelleri
Science
Science (multidisciplinary)
Species
Stable isotopes
Sympatric populations
Sympatry - genetics
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Summary:Trophic niche and diet comparisons among closely sympatric marine species are important to understand complex food webs, particularly in regions most affected by climate change. Using stable isotope analyses, all ontogenetic stages of three sympatric species of Arctic cephalopods (genus Rossia ) were studied to assess inter- and intraspecific competition with niche and diet overlap and partitioning in West Greenland and the Barents Sea. Seven traits related to resource and habitat utilization were identified in Rossia : no trait was shared by all three species. High boreal R. megaptera and Arctic endemic R. moelleri shared three traits with each other, while both R. megaptera and R. moelleri shared only two unique traits each with widespread boreal-Arctic R. palpebrosa . Thus all traits formed fully uncrossing pattern with each species having unique strategy of resource and habitat utilization. Predicted climate changes in the Arctic would have an impact on competition among Rossia with one potential ‘winner’ ( R. megaptera in the Barents Sea) but no potential ‘losers’.
ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-020-78645-z