Journal article
Genetic inheritance of female and male morphotypes in Giant freshwater prawn Macrobrachium rosenbergii
PLoS One, Vol.9(2), e90142
2014
PMCID: PMC3935996
PMID: 24587246
Abstract
Giant freshwater prawn (GFP) Macrobrachium rosenbergii is unique with males categorized in five different morphotypes (small claw, orange claw, blue claw, old blue claw and no claw males) and females in three reproductive statuses (mature ovary, berried and spawned females). In the present study we examined genetic inheritance of female and male morphotypes, their body weights and genetic associations between morphotypes and body traits. Restricted maximum likelihood fitting a multi-trait animal model was performed on a total of 21,459 body records collected over five generations in a GFP population selected for high growth rate. The estimates of variance components showed that there were substantial differences in additive genetic variance in body weight between male morphotypes. The low and significantly different from one genetic correlations between the expressions of body weight in male morphotypes also suggest that these traits should be treated as genetically different traits in selective breeding programs. By contrast, body weights of female types are essentially the same characters as indicated by the high genetic correlations between homologous trait expressions. In addition to body weight, male morphotypes and female reproductive statuses were treated as traits in themselves and were analysed as binary observations using animal and sire linear mixed models, and logit and probit threshold models. The estimates of heritability back-transformed from the liability scale were in good agreement with those obtained from linear mixed models, ranging from 0.02 to 0.43 for male morphotypes and 0.06 to 0.10 for female types. The genetic correlations among male morphoptypes were generally favourable. Body weight showed negative genetic associations with SM (20.96), whereas those of body weight with other male morphotypes were positive (0.25 to 0.76). Our results showed that there is existence of heritable (additive genetic) component for male morphotypes, giving prospects for genetic selection to change population structure of GFP.
Details
- Title
- Genetic inheritance of female and male morphotypes in Giant freshwater prawn Macrobrachium rosenbergii
- Authors
- Hung Ding (Author) - Research Institute for Aquaculture, VietnamNguyen Hong Nguyen (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and Engineering
- Publication details
- PLoS One, Vol.9(2), e90142; 13
- Publisher
- Public Library of Science
- Date published
- 2014
- DOI
- 10.1371/journal.pone.0090142
- ISSN
- 1932-6203
- PMID
- 24587246; PMC3935996
- Copyright note
- Copyright © 2014 Ding et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. This published version is reproduced in accordance with this policy.
- Organisation Unit
- School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering; Centre for Bioinnovation
- Language
- English
- Record Identifier
- 99448717502621
- Output Type
- Journal article
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- Collaboration types
- International collaboration
- Web Of Science research areas
- Fisheries