THE COMPOUND EYE AS AN INDICATOR OF AGE AND SHRINKAGE IN ANTARCTIC KRILL
Laboratory studies have shown that Antarctic krill (Euphausia superba) shrink if maintained in conditions of low food availability. Recent studies have also demonstrated that E. superba individuals may be shrinking in the field during winter. If krill shrink during the winter, conclusions reached by...
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ftchinacasciocas:oai:ir.qdio.ac.cn:337002/2876 2024-09-15T17:42:17+00:00 THE COMPOUND EYE AS AN INDICATOR OF AGE AND SHRINKAGE IN ANTARCTIC KRILL SUN, S DELAMARE, W NICOL, S 1995 http://ir.qdio.ac.cn/handle/337002/2877 unknown ANTARCTIC SCIENCE SUN, S; DELAMARE, W; NICOL, S.THE COMPOUND EYE AS AN INDICATOR OF AGE AND SHRINKAGE IN ANTARCTIC KRILL,ANTARCTIC SCIENCE,1995,7(4):387-392 http://ir.qdio.ac.cn/handle/337002/2877 Euphausia-superba Dana Thysanoessa-inermis Kroyer Meganyctiphanes-norvegica Body Shrinkage Growth Bay Maturation Population Longevity Raschi Environmental Sciences Geography Physical Geosciences Multidisciplinary 期刊论文 1995 ftchinacasciocas 2024-08-09T03:18:11Z Laboratory studies have shown that Antarctic krill (Euphausia superba) shrink if maintained in conditions of low food availability. Recent studies have also demonstrated that E. superba individuals may be shrinking in the field during winter. If krill shrink during the winter, conclusions reached by length-frequency analysis may be unreliable because smaller animals may not necessarily be younger animals. In this study, the correlation between the body-length and the crystalline cone number of the compound eye was examined. Samples collected in the late summer show an apparent linear relationship between crystalline cone number and body-length. From a laboratory population, it appears that when krill shrink the crystalline cone number remains relatively unchanged. If crystalline cone number is little affected by shrinking, then the crystalline cone number may be a more reliable indicator of age than body-length alone. The ratio of crystalline cone number to body-length offers a method for detecting the effect of shrinking in natural populations of krill. On the basis of the crystalline cone number count, it appears from a field collection in early spring that E. superba do shrink during winter. Report Antarc* Antarctic Antarctic Krill Antarctic Science Euphausia superba Meganyctiphanes norvegica Thysanoessa inermis Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR |
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Open Polar |
collection |
Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR |
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ftchinacasciocas |
language |
unknown |
topic |
Euphausia-superba Dana Thysanoessa-inermis Kroyer Meganyctiphanes-norvegica Body Shrinkage Growth Bay Maturation Population Longevity Raschi Environmental Sciences Geography Physical Geosciences Multidisciplinary |
spellingShingle |
Euphausia-superba Dana Thysanoessa-inermis Kroyer Meganyctiphanes-norvegica Body Shrinkage Growth Bay Maturation Population Longevity Raschi Environmental Sciences Geography Physical Geosciences Multidisciplinary SUN, S DELAMARE, W NICOL, S THE COMPOUND EYE AS AN INDICATOR OF AGE AND SHRINKAGE IN ANTARCTIC KRILL |
topic_facet |
Euphausia-superba Dana Thysanoessa-inermis Kroyer Meganyctiphanes-norvegica Body Shrinkage Growth Bay Maturation Population Longevity Raschi Environmental Sciences Geography Physical Geosciences Multidisciplinary |
description |
Laboratory studies have shown that Antarctic krill (Euphausia superba) shrink if maintained in conditions of low food availability. Recent studies have also demonstrated that E. superba individuals may be shrinking in the field during winter. If krill shrink during the winter, conclusions reached by length-frequency analysis may be unreliable because smaller animals may not necessarily be younger animals. In this study, the correlation between the body-length and the crystalline cone number of the compound eye was examined. Samples collected in the late summer show an apparent linear relationship between crystalline cone number and body-length. From a laboratory population, it appears that when krill shrink the crystalline cone number remains relatively unchanged. If crystalline cone number is little affected by shrinking, then the crystalline cone number may be a more reliable indicator of age than body-length alone. The ratio of crystalline cone number to body-length offers a method for detecting the effect of shrinking in natural populations of krill. On the basis of the crystalline cone number count, it appears from a field collection in early spring that E. superba do shrink during winter. |
format |
Report |
author |
SUN, S DELAMARE, W NICOL, S |
author_facet |
SUN, S DELAMARE, W NICOL, S |
author_sort |
SUN, S |
title |
THE COMPOUND EYE AS AN INDICATOR OF AGE AND SHRINKAGE IN ANTARCTIC KRILL |
title_short |
THE COMPOUND EYE AS AN INDICATOR OF AGE AND SHRINKAGE IN ANTARCTIC KRILL |
title_full |
THE COMPOUND EYE AS AN INDICATOR OF AGE AND SHRINKAGE IN ANTARCTIC KRILL |
title_fullStr |
THE COMPOUND EYE AS AN INDICATOR OF AGE AND SHRINKAGE IN ANTARCTIC KRILL |
title_full_unstemmed |
THE COMPOUND EYE AS AN INDICATOR OF AGE AND SHRINKAGE IN ANTARCTIC KRILL |
title_sort |
compound eye as an indicator of age and shrinkage in antarctic krill |
publishDate |
1995 |
url |
http://ir.qdio.ac.cn/handle/337002/2877 |
genre |
Antarc* Antarctic Antarctic Krill Antarctic Science Euphausia superba Meganyctiphanes norvegica Thysanoessa inermis |
genre_facet |
Antarc* Antarctic Antarctic Krill Antarctic Science Euphausia superba Meganyctiphanes norvegica Thysanoessa inermis |
op_relation |
ANTARCTIC SCIENCE SUN, S; DELAMARE, W; NICOL, S.THE COMPOUND EYE AS AN INDICATOR OF AGE AND SHRINKAGE IN ANTARCTIC KRILL,ANTARCTIC SCIENCE,1995,7(4):387-392 http://ir.qdio.ac.cn/handle/337002/2877 |
_version_ |
1810488796142108672 |