Abstract:
The quantities of key biologically active elements, carbon, nitrogen, and hydrogen, were measured from batches of eggs from the Antarctic Krill, Euphausia superba. These krill were collected in the "Western Core Box" krill time series region, an area to the north-west of South Georgia, on the RRS James Clark Ross research cruise JR17002 in the summer (January) 2018. Eggs were collected from ship board incubation experiments. Maternal parasite assemblage and load was determined using DNA metabarcoding. Krill with higher loads of apicomplexa and ciliate parasites laid eggs with lower quantities of carbon and nitrogen. These lower quality eggs may have lower survival and recruitment success, suggesting a mechanism by which parasites may influence krill population dynamics.
Funding source: This research was supported by the European Union's Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement No 887760 (ParaKrill).
Keywords:
Euphausia superba, carbon, eggs, elemental composition, nitrogen
Cleary, A.C., Perry, F., & Tarling, G.A. (2024). Elemental contents of E. superba eggs (carbon, nitrogen, hydrogen) in the context of maternal parasite load (South Georgia, January 2018) (Version 1.0) [Data set]. NERC EDS UK Polar Data Centre. https://doi.org/10.5285/6c4aaf56-1439-4849-b869-8058479e5d6e
| Access Constraints: | Under embargo until publication of the related article. |
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| Use Constraints: | This data is governed by the NERC data policy and supplied under Open Government Licence v.3 http://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/. |
| Creation Date: | 2024-05-21 |
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| Dataset Progress: | Planned |
| Dataset Language: | English |
| ISO Topic Categories: |
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| Parameters: |
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| Personnel: | |
| Name | UK PDC |
| Role(s) | Metadata Author |
| Organisation | British Antarctic Survey |
| Name | Alison C Cleary |
| Role(s) | Technical Contact, Investigator |
| Organisation | British Antarctic Survey |
| Name | Frances Perry |
| Role(s) | Investigator |
| Organisation | British Antarctic Survey |
| Name | Geraint A Tarling |
| Role(s) | Investigator |
| Organisation | British Antarctic Survey |
| Parent Dataset: | N/A |
| Reference: | Associated paper: Cleary, A.C., Perry, F., Tarling, G.A. (in press) The influence of parasites on spawning success and egg quality in Antarctic krill, Euphausia superba. Marine Ecology Progress Series. | |
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| Quality: | Standards of Acetanilide (+/-1450 micrograms) were included every 10 samples. | |
| Lineage: | Eggs were collected at sea within 12 hours of being laid, and frozen until return to the laboratory. Eggs were then defrosted, and subsets of 21-54 random eggs were picked by micropipette into pre-weighed tin boats under a dissecting microscope. Eggs were not rinsed, to avoid breakage due to osmotic shock. Eggs were dried at 56 degrees C for 24 hours, weighed on a microbalance, and stored in a desiccator until analysis on an Exeter Analytical Inc. Model CE440 elemental analyser, with standards of Acetanilide (+/-1450 micrograms) included every 10 samples. | |
| Temporal Coverage: | |
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| Start Date | 2018-01-02 |
| End Date | 2018-01-19 |
| Spatial Coverage: | |
| Latitude | |
| Southernmost | -54 |
| Northernmost | -53 |
| Longitude | |
| Westernmost | -40 |
| Easternmost | -37 |
| Altitude | |
| Min Altitude | N/A |
| Max Altitude | N/A |
| Depth | |
| Min Depth | 0 |
| Max Depth | 200 |
| Location: | |
| Location | Southern Ocean |
| Detailed Location | Scotia Sea |
| Location | Southern Ocean |
| Detailed Location | South Georgia |
| Data Collection: | Exeter Analytical Inc. Model CE440 elemental analyser |
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| Distribution: | |
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| Distribution Media | Online Internet (HTTP) |
| Distribution Size | 8 KB |
| Distribution Format | ASCII |
| Fees | N/A |
| Data Storage: | 1x 8KB .xcsv file |