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Genetic experssion of temperature tolerance in the copepod Eurytemora affinis in different salinity and temperature environments

Genetic experssion of temperature tolerance in the copepod Eurytemora affinis in different... 227 91 91 4 4 B. P. Bradley Department of Biological Sciences University of Maryland Baltimore County 21228 Catonsville Maryland USA Abstract The genetic expression of temperature tolerance in Eurytemora affinis Poppe in different environments was investigated by testing temperature tolerances of broods in pairs of salinity and temperature environments. Three methods were used to identify interaction between genotype and environment: (1) the correlation between mean tolerances of halves of broods grown in the two environments, (2) brood by environment interaction and (3) heritabilities in the two environments. All correlations between means of half broods were positive, only one of six brood by environment interactions was significant and the heritability estimates were not markedly different. Thus, the variability in temperature tolerance in different salinities and in different temperatures seems to be due to the same genes; and selection pressure on temperature tolerance is in the same direction with seasonal changes in temperature and salinity. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Marine Biology Springer Journals

Genetic experssion of temperature tolerance in the copepod Eurytemora affinis in different salinity and temperature environments

Marine Biology , Volume 91 (4) – Jun 1, 1986

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References (15)

Publisher
Springer Journals
Copyright
Copyright © 1986 by Springer-Verlag
Subject
Life Sciences; Biomedicine general; Oceanography; Ecology; Microbiology; Zoology
ISSN
0025-3162
eISSN
1432-1793
DOI
10.1007/BF00392608
Publisher site
See Article on Publisher Site

Abstract

227 91 91 4 4 B. P. Bradley Department of Biological Sciences University of Maryland Baltimore County 21228 Catonsville Maryland USA Abstract The genetic expression of temperature tolerance in Eurytemora affinis Poppe in different environments was investigated by testing temperature tolerances of broods in pairs of salinity and temperature environments. Three methods were used to identify interaction between genotype and environment: (1) the correlation between mean tolerances of halves of broods grown in the two environments, (2) brood by environment interaction and (3) heritabilities in the two environments. All correlations between means of half broods were positive, only one of six brood by environment interactions was significant and the heritability estimates were not markedly different. Thus, the variability in temperature tolerance in different salinities and in different temperatures seems to be due to the same genes; and selection pressure on temperature tolerance is in the same direction with seasonal changes in temperature and salinity.

Journal

Marine BiologySpringer Journals

Published: Jun 1, 1986

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