High diversity of freshwater invertebrates on inuinnait nuna, the canadian arctic, revealed using mitochondrial DNA barcodes

Knowledge of genetic and species-level diversity for freshwater invertebrates in the Canadian Arctic is currently limited. Here, we sampled benthic and planktonic invertebrates from 68 ponds, seven lakes, and six rivers near Cambridge Bay (Iqaluktuuttiaq), Nunavut, between 2018 and 2021 and analysed...

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Bibliographic Details
Published in:Polar biology 2024-12, Vol.47 (12), p.1475-1490
Main Authors: Nowosad, Danielle S. J., Hogg, Ian D., Cottenie, Karl, Lear, Carter, Elliott, Tyler A., deWaard, Jeremy R., Steinke, Dirk, Adamowicz, Sarah J.
Format: Article
Language:English
Subjects:
Aquatic habitats
Bar codes
Benthos
Biomedical and Life Sciences
Cytochrome-c oxidase
Cytochromes
DNA barcoding
Ecology
Freshwater
Freshwater crustaceans
Freshwater invertebrates
Gene sequencing
Genetic diversity
Haplotypes
Ice accumulation
Inland water environment
Invertebrates
Life Sciences
Microbiology
Mitochondrial DNA
Nucleotide sequence
Oceanography
Plant Sciences
Rivers
Species diversity
Species richness
Taxa
Zoology
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Summary:Knowledge of genetic and species-level diversity for freshwater invertebrates in the Canadian Arctic is currently limited. Here, we sampled benthic and planktonic invertebrates from 68 ponds, seven lakes, and six rivers near Cambridge Bay (Iqaluktuuttiaq), Nunavut, between 2018 and 2021 and analysed individuals using mitochondrial cytochrome c oxidase subunit 1 (COI) gene sequences. From the 9336 specimens collected, 7186 provided sequences > 400 base pairs (83% success rate), representing 3358 unique haplotypes and 467 putative species based on Barcode Index Numbers (BINs; as a surrogate for species-level diversity). Chironomidae (non-biting midges) was the most diverse taxon, followed by Trombidiformes mites and Anomopoda (water fleas). Species’ accumulation curves for total diversity as well as the major taxa suggest that taxa we identified represent 
ISSN:0722-4060
1432-2056
DOI:10.1007/s00300-024-03311-3