Journal article
Effects of selection for fast growth on survival rate during grow-out phase in giant freshwater prawn (Macrobrachium rosenbergii)
BMC Genetics, Vol.18, 56
2017
Abstract
Background: Correlated genetic response in survival to selection for high growth has not been reported in giant freshwater prawn (GFP) (Macrobrachium rosenbergii). The main aim of this study was to measure genetic changes and estimate heritability for this character (survival rate) and its genetic associations with body traits in a GFP population selected over eight generations from 2008 to 2015. Statistical analyses were conducted on 106,696 data records, using threshold logistic mixed model. Results: The estimated heritability for survival was 0.14±0.04 and significant. Genetic associations of survival with body traits (weight, length and width) were weak, with the estimates of genetic correlations between the traits close to zero. Realised genetic changes in survival, calculated as the difference in estimated breeding values between the selection line and control group within the same generation, was in positive direction but the estimates were not significantly different from zero regardless of the expression unit used either in actual unit of measurement or genetic standard deviation unit. On the other hand, communal testing of stocks in the latest generation, namely G7 (2015), showed that the selection line had 18% higher survival rate than progeny of the wild prawns originated from Mekong river. This result suggests that inadvertent changes in survival occurred during domestication-selection. Conclusions: It is concluded that selection for high growth had no significant effect on survival in the present population of M. rosenbergii
Details
- Title
- Effects of selection for fast growth on survival rate during grow-out phase in giant freshwater prawn (Macrobrachium rosenbergii)
- Authors
- Nguyen Thanh Vu (Author) - National Breeding Centre for Southern Freshwater Aquaculture, VietnamTrinh Quoc Trong (Author) - National Breeding Centre for Southern Freshwater Aquaculture, VietnamNguyen Hong Nguyen (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and Engineering
- Publication details
- BMC Genetics, Vol.18, 56; 6
- Publisher
- BioMed Central Ltd.
- Date published
- 2017
- DOI
- 10.1186/s12863-017-0521-7
- ISSN
- 1471-2156
- Copyright note
- Copyright © The Author(s). 2017 Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
- Organisation Unit
- Faculty of Science, Health, Education and Engineering; School of Science and Engineering - Legacy; Faculty of Arts, Business and Law; University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering; Centre for Bioinnovation
- Language
- English
- Record Identifier
- 99451291002621
- Output Type
- Journal article
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- Collaboration types
- International collaboration
- Web Of Science research areas
- Genetics & Heredity