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פותח על ידי קלירמאש פתרונות בע"מ -
Cold tolerance of tilapia species and hybrids
Year:
2000
Source of publication :
Aquaculture International
Authors :
חולתא, גדעון
;
.
כנעני, אבנר
;
.
Volume :
8
Co-Authors:
Cnaani, A., Department of Aquaculture, Agricultural Research Organization, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Gall, G.A.E., Department of Animal Science, University of California-Davis, Davis, CA 95616, United States
Hulata, G., Department of Aquaculture, Agricultural Research Organization, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Facilitators :
From page:
289
To page:
298
(
Total pages:
10
)
Abstract:
Several experiments were conducted, involving Oreochromis mossambicus, O. aureus and their F1 and F2 hybrids to study the genetic basis of cold tolerance in tilapiine fishes. Groups of fish, of similar age and grown under identical conditions, were housed in replicated net enclosures in a controlled cooling water system. Survival time through a regime of controlled temperature reduction was the observed parameter for cold tolerance. Intra-population variation and differences among species, hybrids and repeated spawns within a species were examined. There was no correlation between cold tolerance and fish size (within the range of 23-105mm standard length), and the distribution for the trait was not normal. O. mossambicus was the most cold-sensitive group, followed by the F2, and the F1 which was similar to O. aureus. Genetic variation in cold tolerance seems to have a large dominance component, based on the similarity of the F1 hybrid to the O. aureus parent.
Note:
Related Files :
aquaculture1 (domain1)
body size
cold tolerance
genetic variance
hybrid
Hybrids
survival
Tilapias (Oreochromis aureus, O. mossambicus)
עוד תגיות
תוכן קשור
More details
DOI :
10.1023/A:1009299109614
Article number:
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
27921
Last updated date:
02/03/2022 17:27
Creation date:
17/04/2018 00:35
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Scientific Publication
Cold tolerance of tilapia species and hybrids
8
Cnaani, A., Department of Aquaculture, Agricultural Research Organization, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Gall, G.A.E., Department of Animal Science, University of California-Davis, Davis, CA 95616, United States
Hulata, G., Department of Aquaculture, Agricultural Research Organization, Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel
Cold tolerance of tilapia species and hybrids
Several experiments were conducted, involving Oreochromis mossambicus, O. aureus and their F1 and F2 hybrids to study the genetic basis of cold tolerance in tilapiine fishes. Groups of fish, of similar age and grown under identical conditions, were housed in replicated net enclosures in a controlled cooling water system. Survival time through a regime of controlled temperature reduction was the observed parameter for cold tolerance. Intra-population variation and differences among species, hybrids and repeated spawns within a species were examined. There was no correlation between cold tolerance and fish size (within the range of 23-105mm standard length), and the distribution for the trait was not normal. O. mossambicus was the most cold-sensitive group, followed by the F2, and the F1 which was similar to O. aureus. Genetic variation in cold tolerance seems to have a large dominance component, based on the similarity of the F1 hybrid to the O. aureus parent.
Scientific Publication
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