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KN195-10 Lipofuscin and Euphausiid Aging

Summary

Age determination in crustaceans relies on quantification of a fluorescent "age pigment," lipofuscin, that accumulates in eye stalks of krill over time. Lipofuscin includes a mixture of protein oxidation products formed in neural tissues. The extracted products are quantified using a fluorescence detector. The concentration of lipofuscin is normalized to the protein content from the same tissues. The ratio of lipofuscin to protein concentration is the Lipofuscin Index and is calculated for each individual organisms. In order for the index to reflect chronological age, a calibration is required using euphausiids of known age. A comparison of the calculated ages to the specific lengths for each krill provides the ages for those krill analyzed during each cruise. These data were collected aboard the United States Coast Guard Icebreaker Healy. Data were collected during the Bering Sea Ecosystem Study-Bering Sea Integrated Ecosystem Research Program (BEST-BSIERP). BEST-BSIERP together are the Bering Sea project. 

Data access

  • ORDER data for delivery by FTP

Additional information

Identifier
Versions
  • 1.0 (2010-01-13)
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Related projects
Spatial Type unknown
Frequency no set schedule
Language English
ISO Topic Categories
  • biota
  • oceans
Categories
Platforms
Instruments
Events
GCMD Science Keywords Expand keywords

Temporal coverage

Begin datetime 2009-06-19 00:00:00
End datetime 2009-07-11 23:59:00

Spatial coverage


Map data from IBCSO, IBCAO, and Global Topography.

Maximum (North) Latitude: 59.9012, Minimum (South) Latitude: 55.2812
Minimum (West) Longitude: -177.582, Maximum (East) Longitude: -166.22775

Primary point of contact information

H. Rodger Harvey <rharvey@odu.edu>

Additional contact information

Citation

Example citation following ESIP guidelines:

Harvey, H., Pleuthner, R. 2010. KN195-10 Lipofuscin and Euphausiid Aging. Version 1.0. UCAR/NCAR - Earth Observing Laboratory. https://doi.org/10.5065/D6RX993J. Accessed 29 Sep 2020.

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