Data from: New determination of prey and parasite species for Northern Indian Ocean blue whales
Blue whales are little studied, face significant anthropogenic threats and within the Northern Indian Ocean, have a restricted range, making them an archetype for conservation needs of megafauna around the world. We studied feeding behaviour of blue whales using dietary DNA metabarcoding of faecal s...
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Online Access: | https://doi.org/10.5061/dryad.qt352sg |
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fttriple:oai:gotriple.eu:50|dedup_wf_001::b9b89d9f069b17cb2c36d3d23ea9bb1d 2023-05-15T15:36:24+02:00 Data from: New determination of prey and parasite species for Northern Indian Ocean blue whales De Vos, Asha Faux, Cassandra E. Marthick, James Dickinson, Joanne Jarman, Simon Jarman, Simon N. 2019-01-01 https://doi.org/10.5061/dryad.qt352sg undefined unknown http://dx.doi.org/10.5061/dryad.qt352sg https://dx.doi.org/10.5061/dryad.qt352sg lic_creative-commons oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:103348 10.5061/dryad.qt352sg oai:easy.dans.knaw.nl:easy-dataset:103348 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 re3data_____::r3d100000044 Life sciences medicine and health care Anthropocene shrimp Sri Lanka Euphausiidae Balaenoptera musculus) Sergestid Faeces blue whales Acanthocephala DNA metabarcoding feeding Northern Indian Ocean behaviour krill envir geo Dataset https://vocabularies.coar-repositories.org/resource_types/c_ddb1/ 2019 fttriple https://doi.org/10.5061/dryad.qt352sg https://doi.org/10.5061/DRYAD.QT352SG 2023-01-22T16:52:43Z Blue whales are little studied, face significant anthropogenic threats and within the Northern Indian Ocean, have a restricted range, making them an archetype for conservation needs of megafauna around the world. We studied feeding behaviour of blue whales using dietary DNA metabarcoding of faecal samples. While globally blue whale populations feed predominantly on Euphausiidae, 87 % of prey DNA amplicons extracted from faecal samples from this population were sergestid shrimp, demonstrating that blue whales can locate and feed on dense swarms of other types of prey when they occur. Within the Indian Ocean sergestids are present within the top 300 m, which correlates with the deep scattering layer observed by hydroacoustics. Studies suggest that this requirement to dive deeper in search of prey likely explains the prevalence of fluke up diving within this population of blue whales relative to other parts of the globe. Furthermore, this study revealed the presence of acanthocephalan endoparasites within the stomach and intestines of the Northern Indian Ocean blue whales. This represents the first record of Acanthocephala in blue whales in the Northern Indian Ocean and highlights the need for further studies on both the ecto- and endoparasitic flora and monitoring of health of these cetaceans for their management and conservation. DNA sequences amplified from blue whale scatsFastq files of DNA sequences amplified from blue whale scats.BlueWhaleDietSequencingRawData.zip Dataset Balaenoptera musculus Blue whale Unknown Indian |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
unknown |
topic |
Life sciences medicine and health care Anthropocene shrimp Sri Lanka Euphausiidae Balaenoptera musculus) Sergestid Faeces blue whales Acanthocephala DNA metabarcoding feeding Northern Indian Ocean behaviour krill envir geo |
spellingShingle |
Life sciences medicine and health care Anthropocene shrimp Sri Lanka Euphausiidae Balaenoptera musculus) Sergestid Faeces blue whales Acanthocephala DNA metabarcoding feeding Northern Indian Ocean behaviour krill envir geo De Vos, Asha Faux, Cassandra E. Marthick, James Dickinson, Joanne Jarman, Simon Jarman, Simon N. Data from: New determination of prey and parasite species for Northern Indian Ocean blue whales |
topic_facet |
Life sciences medicine and health care Anthropocene shrimp Sri Lanka Euphausiidae Balaenoptera musculus) Sergestid Faeces blue whales Acanthocephala DNA metabarcoding feeding Northern Indian Ocean behaviour krill envir geo |
description |
Blue whales are little studied, face significant anthropogenic threats and within the Northern Indian Ocean, have a restricted range, making them an archetype for conservation needs of megafauna around the world. We studied feeding behaviour of blue whales using dietary DNA metabarcoding of faecal samples. While globally blue whale populations feed predominantly on Euphausiidae, 87 % of prey DNA amplicons extracted from faecal samples from this population were sergestid shrimp, demonstrating that blue whales can locate and feed on dense swarms of other types of prey when they occur. Within the Indian Ocean sergestids are present within the top 300 m, which correlates with the deep scattering layer observed by hydroacoustics. Studies suggest that this requirement to dive deeper in search of prey likely explains the prevalence of fluke up diving within this population of blue whales relative to other parts of the globe. Furthermore, this study revealed the presence of acanthocephalan endoparasites within the stomach and intestines of the Northern Indian Ocean blue whales. This represents the first record of Acanthocephala in blue whales in the Northern Indian Ocean and highlights the need for further studies on both the ecto- and endoparasitic flora and monitoring of health of these cetaceans for their management and conservation. DNA sequences amplified from blue whale scatsFastq files of DNA sequences amplified from blue whale scats.BlueWhaleDietSequencingRawData.zip |
format |
Dataset |
author |
De Vos, Asha Faux, Cassandra E. Marthick, James Dickinson, Joanne Jarman, Simon Jarman, Simon N. |
author_facet |
De Vos, Asha Faux, Cassandra E. Marthick, James Dickinson, Joanne Jarman, Simon Jarman, Simon N. |
author_sort |
De Vos, Asha |
title |
Data from: New determination of prey and parasite species for Northern Indian Ocean blue whales |
title_short |
Data from: New determination of prey and parasite species for Northern Indian Ocean blue whales |
title_full |
Data from: New determination of prey and parasite species for Northern Indian Ocean blue whales |
title_fullStr |
Data from: New determination of prey and parasite species for Northern Indian Ocean blue whales |
title_full_unstemmed |
Data from: New determination of prey and parasite species for Northern Indian Ocean blue whales |
title_sort |
data from: new determination of prey and parasite species for northern indian ocean blue whales |
publishDate |
2019 |
url |
https://doi.org/10.5061/dryad.qt352sg |
geographic |
Indian |
geographic_facet |
Indian |
genre |
Balaenoptera musculus Blue whale |
genre_facet |
Balaenoptera musculus Blue whale |
op_source |
oai:services.nod.dans.knaw.nl:Products/dans:oai:easy.dans.knaw.nl:easy-dataset:103348 10.5061/dryad.qt352sg oai:easy.dans.knaw.nl:easy-dataset:103348 10|eurocrisdris::fe4903425d9040f680d8610d9079ea14 10|openaire____::9e3be59865b2c1c335d32dae2fe7b254 10|re3data_____::94816e6421eeb072e7742ce6a9decc5f 10|re3data_____::84e123776089ce3c7a33db98d9cd15a8 re3data_____::r3d100000044 |
op_relation |
http://dx.doi.org/10.5061/dryad.qt352sg https://dx.doi.org/10.5061/dryad.qt352sg |
op_rights |
lic_creative-commons |
op_doi |
https://doi.org/10.5061/dryad.qt352sg https://doi.org/10.5061/DRYAD.QT352SG |
_version_ |
1766366746766213120 |