Family differences on triploid induction, sexual maturation and its contribution to sea cage performance of Atlantic cod, Gadus morhua
Early maturation has been one of the biological bottlenecks of commercializing Atlantic cod culture. To overcome the bottleneck, production of sterile fish through triploidy and other molecular techniques have been suggested and attempted. Although studies have been carried out on triploid performan...
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Online Access: | http://hdl.handle.net/11250/2592251 https://doi.org/10.1016/j.aquaculture.2019.03.013 |
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ftimr:oai:imr.brage.unit.no:11250/2592251 2023-05-15T15:26:59+02:00 Family differences on triploid induction, sexual maturation and its contribution to sea cage performance of Atlantic cod, Gadus morhua Puvanendran, Velmurugu Lein, Ingrid Bangera, Rama Mortensen, Atle Thorsen, Anders 2019 application/pdf http://hdl.handle.net/11250/2592251 https://doi.org/10.1016/j.aquaculture.2019.03.013 eng eng Norges forskningsråd: 207547 Nofima AS: 1090 Aquaculture. 2019, 506 14-22. urn:issn:0044-8486 http://hdl.handle.net/11250/2592251 https://doi.org/10.1016/j.aquaculture.2019.03.013 cristin:1685507 14-22 506 Aquaculture Journal article Peer reviewed 2019 ftimr https://doi.org/10.1016/j.aquaculture.2019.03.013 2021-09-23T20:15:12Z Early maturation has been one of the biological bottlenecks of commercializing Atlantic cod culture. To overcome the bottleneck, production of sterile fish through triploidy and other molecular techniques have been suggested and attempted. Although studies have been carried out on triploid performance of Atlantic cod, no studies have been conducted to see the performance of triploid fish at family level. We produced 29 triploid sibling families using standard hydrostatic pressure technique of newly fertilized eggs with parallel, untreated diploid families. Larvae were reared in separate tanks using standard rearing protocols until reaching 20 g and were PIT tagged. PIT tagged juveniles were transferred to sea cages in duplicate. At 34 months post-hatch, all the fish were sampled and body weight, liver weight and gonadal weight were recorded. Results showed that significant family differences exist between diploid and triploid families in gonadal development, especially for the females. Fish from triploid families had significantly smaller gonadosomatic index than fish from diploid families, but diploid families were heavier than the triploid families. Our result highlight the need for considering a parallel strategy for triploid family selection within the conventional diploid breeding program to exploit the existing variation in triploid performance. acceptedVersion Article in Journal/Newspaper atlantic cod Gadus morhua Institute for Marine Research: Brage IMR Aquaculture 506 14 22 |
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Open Polar |
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Institute for Marine Research: Brage IMR |
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language |
English |
description |
Early maturation has been one of the biological bottlenecks of commercializing Atlantic cod culture. To overcome the bottleneck, production of sterile fish through triploidy and other molecular techniques have been suggested and attempted. Although studies have been carried out on triploid performance of Atlantic cod, no studies have been conducted to see the performance of triploid fish at family level. We produced 29 triploid sibling families using standard hydrostatic pressure technique of newly fertilized eggs with parallel, untreated diploid families. Larvae were reared in separate tanks using standard rearing protocols until reaching 20 g and were PIT tagged. PIT tagged juveniles were transferred to sea cages in duplicate. At 34 months post-hatch, all the fish were sampled and body weight, liver weight and gonadal weight were recorded. Results showed that significant family differences exist between diploid and triploid families in gonadal development, especially for the females. Fish from triploid families had significantly smaller gonadosomatic index than fish from diploid families, but diploid families were heavier than the triploid families. Our result highlight the need for considering a parallel strategy for triploid family selection within the conventional diploid breeding program to exploit the existing variation in triploid performance. acceptedVersion |
format |
Article in Journal/Newspaper |
author |
Puvanendran, Velmurugu Lein, Ingrid Bangera, Rama Mortensen, Atle Thorsen, Anders |
spellingShingle |
Puvanendran, Velmurugu Lein, Ingrid Bangera, Rama Mortensen, Atle Thorsen, Anders Family differences on triploid induction, sexual maturation and its contribution to sea cage performance of Atlantic cod, Gadus morhua |
author_facet |
Puvanendran, Velmurugu Lein, Ingrid Bangera, Rama Mortensen, Atle Thorsen, Anders |
author_sort |
Puvanendran, Velmurugu |
title |
Family differences on triploid induction, sexual maturation and its contribution to sea cage performance of Atlantic cod, Gadus morhua |
title_short |
Family differences on triploid induction, sexual maturation and its contribution to sea cage performance of Atlantic cod, Gadus morhua |
title_full |
Family differences on triploid induction, sexual maturation and its contribution to sea cage performance of Atlantic cod, Gadus morhua |
title_fullStr |
Family differences on triploid induction, sexual maturation and its contribution to sea cage performance of Atlantic cod, Gadus morhua |
title_full_unstemmed |
Family differences on triploid induction, sexual maturation and its contribution to sea cage performance of Atlantic cod, Gadus morhua |
title_sort |
family differences on triploid induction, sexual maturation and its contribution to sea cage performance of atlantic cod, gadus morhua |
publishDate |
2019 |
url |
http://hdl.handle.net/11250/2592251 https://doi.org/10.1016/j.aquaculture.2019.03.013 |
genre |
atlantic cod Gadus morhua |
genre_facet |
atlantic cod Gadus morhua |
op_source |
14-22 506 Aquaculture |
op_relation |
Norges forskningsråd: 207547 Nofima AS: 1090 Aquaculture. 2019, 506 14-22. urn:issn:0044-8486 http://hdl.handle.net/11250/2592251 https://doi.org/10.1016/j.aquaculture.2019.03.013 cristin:1685507 |
op_doi |
https://doi.org/10.1016/j.aquaculture.2019.03.013 |
container_title |
Aquaculture |
container_volume |
506 |
container_start_page |
14 |
op_container_end_page |
22 |
_version_ |
1766357445039357952 |