i
Validation of band counts in eyestalks for the determination of age of Antarctic krill, Euphausia superba
-
2017
Source: PLOS ONE
[PDF-1.58 MB]
Details:
-
Alternative Title:Validation of band counts in eyestalks for the determination of age of Antarctic krill, Euphausia superba
-
Journal Title:PLOS ONE
-
Personal Author:
-
NOAA Program & Office:
-
Description:Using known-age Antarctic krill (Euphausia superba) grown from eggs hatched at two different laboratories, we validate the annual pattern of bands deposited in the eyestalks of krill and determine the absolute age of these animals. Ages two through five years were validated, and these animals ranged from 37.1 to 62.6 mm in total length. The band counts in these individuals were either identical to their absolute ages, or only failed to agree by a few months, which demonstrates the accuracy of this method. Precision and bias were estimated graphically using Chang's index (Coefficient of Variation = 5.03%). High accuracy and precision between readers and low ageing bias indicate that longitudinal sections of eyestalks can be used to age krill in wild samples and to develop age-based stock assessment models for krill. Archival samples preserved in formalin (5%) and stored in ambient conditions were also readable. Ageing preserved krill will provide the opportunity to examine changes in growth among krill populations within the Southern Ocean and to retrospectively examine changes in krill production over the last century to better understand the historical and future impacts of climate change on this critical Southern Ocean species.
-
Keywords:
-
Source:PLOS ONE
-
Pubmed Central ID:PMC5321404
-
Document Type:
-
Place as Subject:
-
Rights Information:CC BY
-
Compliance:PMC
-
Main Document Checksum:urn:sha256:5d132c0aa39f369802883a3c1b0a14987bc5951eb3fc4f94cff447a1dbe2e08f
-
File Type:
Supporting Files
-
No Additional Files
More +
Related Documents
-
2017 | Environ. Res. Lett. 12 014006;Description:Feedbacks between climate warming, land surface aridity, and wildfire-derived aerosols represent a large source of uncertainty in future climate predi...Personal Author:Liu, Lingling ;Zhang, Xiaoyang...2017 | Environmental Research LettersDescription:The timing of fall foliage coloration, especially peak coloration, is of great importance to the climate change research community as it has implicati...Personal Author:Hellmann, Lena ;Agafonov, Leonid...2016 | Environmental Research LettersDescription:The area covered by boreal forests accounts for similar to 16% of the global and 22% of the Northern Hemisphere landmass. Changes in the productivity ...Personal Author:Peckham, S. Hoyt ;Lucero-Romero, Jesus...2016 | Conservation LettersDescription:Coastal entangling net fisheries are globally ubiquitous and have substantial socioeconomic importance, especially in developing nations. Bycatch in c...2017 | PLOS ONEDescription:In 2014, the Bering Sea shifted back to warmer ocean temperatures (+2 degrees C above average), bringing concern for the potential for a new warm stan...Personal Author:Martinez, Pamela P. ;Reiner, Robert C....2017 | PLoS ONE 12(3): e0172355.Description:A substantial body of work supports a teleconnection between the El Nino-Southern Oscillation (ENSO) and cholera incidence in Bangladesh. In particula...2018 | Environ. Res. Lett. 13 054017Description:Extreme temperatures are one of the leading causes of death and disease in both developed and developing countries, and heat extremes are projected to...Personal Author:Vogt, Daniel M. ;Becker, Kaitlyn P....2018 | PLoS ONE 13(8): e0200386.Description:Soft robotics is an emerging technology that has shown considerable promise in deep-sea marine biological applications. It is particularly useful in f...2016 | PLOS ONEDescription:Partially owing to their isolation and remote distribution, research on seamounts is still in its infancy, with few comprehensive datasets and empiric...2018 | Evolutionary ApplicationsDescription:Biological diversity is a key concept in the life sciences and plays a fundamental role in many ecological and evolutionary processes. Although biodiv...
More +
You May Also Like
Personal Author:
Hanley, P.H. ;
Bjorkstedt, E.P.
...
2024 | Ecological Modelling 489 (2024) 110607
Description:
Ovigerous American lobsters, Homarus americanus, in the Bay of Fundy undertake seasonal migrations, which are thought to improve the thermal condition...
Checkout today's featured content at repository.library.noaa.gov