| ZHANG Tianshi,KONG Jie,LIU Baosuo,WANG Qingyin,CAO Baoxiang,LUAN Sheng,WANG Weiji. 2014. Genetic parameter estimation for juvenile growth and upper thermal tolerance in turbot (Scophthalmus maximus Linnaeus). Acta Oceanologica Sinica, 33(8):106－110 |
| Genetic parameter estimation for juvenile growth and upper thermal tolerance in turbot (Scophthalmus maximus Linnaeus) |
| Genetic parameter estimation for juvenile growth and upper thermal tolerance in turbot (Scophthalmus maximus Linnaeus) |
| Received:November 28, 2012 Revised:June 21, 2013 |
| DOI：10.1007/s13131-014-0460-3 |
| Key words:Scophthalmus maximus Linnaeus growth upper thermal tolerance genetic parameter |
| 中文关键词: Scophthalmus maximus Linnaeus growth upper thermal tolerance genetic parameter |
| 基金项目:The Special Scientific Research Funds for Central Non-profit Institutes, Yellow Sea Fisheries Research Institutes under contract No. 20603022012002;the National High Technology Research and Development Program of China (863 Program) under contract No. 2012AA10A408-7. |
| Author Name | Affiliation | E-mail | | ZHANG Tianshi | Key Laboratory for Sustainable Utilization of Marine Fisheries Resources, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China | | | KONG Jie | Key Laboratory for Sustainable Utilization of Marine Fisheries Resources, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China | kongjie@ysfri.ac.cn | | LIU Baosuo | College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, China | | | WANG Qingyin | Key Laboratory for Sustainable Utilization of Marine Fisheries Resources, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China | | | CAO Baoxiang | Key Laboratory for Sustainable Utilization of Marine Fisheries Resources, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China | | | LUAN Sheng | Key Laboratory for Sustainable Utilization of Marine Fisheries Resources, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China | | | WANG Weiji | Key Laboratory for Sustainable Utilization of Marine Fisheries Resources, Ministry of Agriculture, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China | |
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| Abstract: |
| Twenty-six half-sib groups (53 full-sib families) of turbot, Scophthalmus maximus Linnaeus, were obtained by artificial insemination. We measured growth in the offspring (40-50 individuals/family) and subjected them to a thermal tolerance challenge over a period of 34 d. There was no significant difference in daily mortality (range: 0.580%-1.391%) between Days 1-13 during the thermal tolerance challenge. However, daily cumulative mortality increased rapidly between Days 14 and 29, especially on Days 15 and 16 (20.232% and 34.377%, respectively). Mortality was highest on Day 16 (14.145%). We estimated the genetic parameters using the average information restricted maximum likelihood method. We used a likelihood ratio test to evaluate the significance of effects in models with and without identity as an effect, and compared the final log-likelihoods (maximum log L). Lastly, we estimated phenotypic and genetic correlation between the upper thermal tolerance limit (UTT) and body weight (BW). In this study, the positive phenotypic correlation was low between UTT and BW (0.093±0.029). The genetic correlation between UTT and BW was negative (-0.044±0.239). The heritability for upper thermal tolerance was low (0.087±0.032), which is of approximately moderate heritability. The heritability for body weight was high (0.303±0.074). Our results suggest there is significant potential for improvement in the culture of turbot by selective breeding. |
| 中文摘要: |
| Twenty-six half-sib groups (53 full-sib families) of turbot, Scophthalmus maximus Linnaeus, were obtained by artificial insemination. We measured growth in the offspring (40-50 individuals/family) and subjected them to a thermal tolerance challenge over a period of 34 d. There was no significant difference in daily mortality (range: 0.580%-1.391%) between Days 1-13 during the thermal tolerance challenge. However, daily cumulative mortality increased rapidly between Days 14 and 29, especially on Days 15 and 16 (20.232% and 34.377%, respectively). Mortality was highest on Day 16 (14.145%). We estimated the genetic parameters using the average information restricted maximum likelihood method. We used a likelihood ratio test to evaluate the significance of effects in models with and without identity as an effect, and compared the final log-likelihoods (maximum log L). Lastly, we estimated phenotypic and genetic correlation between the upper thermal tolerance limit (UTT) and body weight (BW). In this study, the positive phenotypic correlation was low between UTT and BW (0.093±0.029). The genetic correlation between UTT and BW was negative (-0.044±0.239). The heritability for upper thermal tolerance was low (0.087±0.032), which is of approximately moderate heritability. The heritability for body weight was high (0.303±0.074). Our results suggest there is significant potential for improvement in the culture of turbot by selective breeding. |
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