Nucleic acid content as a potential growth rate estimator of Antarctic krill; Results from field-caught krill from the Indian sector of the Southern Ocean SCIE

Cited 10 time in WEB OF SCIENCE
Title
Nucleic acid content as a potential growth rate estimator of Antarctic krill; Results from field-caught krill from the Indian sector of the Southern Ocean
Author(s)
Shin, HC; Nicol, S; King, RA
Publication Year
2003-12
Abstract
Nucleic acid contents of tissue were determined from field-caught Antarctic krill to determine whether they could be used as an alternative estimator of individual growth rates which can currently only be obtained by labour intensive on-board incubations. Krill from contrasting growth regimes from early and late summer exhibited differences in RNA-based indices. There was a significant correlation between the independently measured individual growth rates and the RNA : DNA ratio and also the RNA concentration of krill tissue, although the strength of the relationship was only modest. DNA concentration, on average, was relatively constant, irrespective of the growth rates. The moult stage did not appear to have a significant effect on the nucleic acid contents of tissue. Overall, the amount of both nucleic acids varied considerably between individuals. Nucleic acid-based indicators may provide information concerning the recent growth and nutritional status of krill and further experimentation under controlled conditions is warranted. They are, however, reasonably costly and time-consuming measurements.
ISSN
0091-181X
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/5427
DOI
10.1080/10236240310001614402
Bibliographic Citation
MARINE AND FRESHWATER BEHAVIOUR AND PHYSIOLOGY, v.36, no.4, pp.295 - 305, 2003
Publisher
TAYLOR & FRANCIS LTD
Subject
EUPHAUSIA-SUPERBA DANA; JUVENILE WHITE SHRIMP; FOOD AVAILABILITY; PENAEUS-VANNAMEI; RNA/DNA RATIOS; MOLT CYCLE; RNA; LARVAE; SIZE; FISH
Keywords
Antarctic krill; RNA; DNA; growth rate; nutritional status; moult
Type
Article
Language
English
Document Type
Article; Proceedings Paper
Publisher
TAYLOR & FRANCIS LTD
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