DNA metabarcoding of feces to infer summer diet of Pacific walruses
July 24, 2020
Environmental conditions in the Chukchi Sea are changing rapidly and may alter the abundance and distribution of marine species and their benthic prey. We used a metabarcoding approach to identify potentially important prey taxa from Pacific walrus (Odobenus rosmarus divergens) fecal samples (n = 87). Bivalvia was the most dominant class of prey (66% of all normalized counts) and occurred in 98% of the samples. Polychaeta and Gastropoda occurred in 70% and 62% of the samples, respectively. The remaining nine invertebrate classes comprised
Citation Information
| Publication Year | 2020 |
|---|---|
| Title | DNA metabarcoding of feces to infer summer diet of Pacific walruses |
| DOI | 10.1111/mms.12717 |
| Authors | Sarah Sonsthagen, Chadwick Jay, Robert Cornman, Anthony Fischbach, Jacqueline Grebmeier, Sandra Talbot |
| Publication Type | Article |
| Publication Subtype | Journal Article |
| Series Title | Marine Mammal Science |
| Index ID | 70214668 |
| Record Source | USGS Publications Warehouse |
| USGS Organization | Alaska Science Center Biology WTEB |
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Metabarcoding of Feces of Pacific Walruses and Autosomal DNA Sequence Data of Marine Invertebrates, 2012-2015, Alaska Metabarcoding of Feces of Pacific Walruses and Autosomal DNA Sequence Data of Marine Invertebrates, 2012-2015, Alaska
This data set describes nucleotide sequence data derived from 18S ribosomal DNA amplified in two fragments. A total of 87 feces from Pacific walrus and 57 marine invertebrates were examined for this study. Samples were collected from the Bering Sea and Chukchi Sea, Alaska. Samples used in the study originated from feces or muscle samples collected in the field from ice floes or benthic...
Sarah A Sonsthagen, PhD
Research Wildlife Biologist
Research Wildlife Biologist
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Related
Metabarcoding of Feces of Pacific Walruses and Autosomal DNA Sequence Data of Marine Invertebrates, 2012-2015, Alaska Metabarcoding of Feces of Pacific Walruses and Autosomal DNA Sequence Data of Marine Invertebrates, 2012-2015, Alaska
This data set describes nucleotide sequence data derived from 18S ribosomal DNA amplified in two fragments. A total of 87 feces from Pacific walrus and 57 marine invertebrates were examined for this study. Samples were collected from the Bering Sea and Chukchi Sea, Alaska. Samples used in the study originated from feces or muscle samples collected in the field from ice floes or benthic...
Sarah A Sonsthagen, PhD
Research Wildlife Biologist
Research Wildlife Biologist
Email
Phone