Construction of high-density linkage maps and QTL mapping for growth-related traits in F1 hybrid Yunlong grouper (Epinephelus moara♀ × E. lanceolatus♂)

Liu, Yang; Tian, Yongsheng; Wang, Linna; Li, Zhentong; Zhang, Jingjing; Wu, Yuping; Chen, Shuai; Li, Linlin; Li, Wensheng; Ma, Wenhui; Lin, Haowei; Wang, Qingbin

doi:10.1016/j.aquaculture.2021.737698

Cited by 4 publications

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“…Hybridization is an effective tool for cultivating high‐quality farmed grouper species. Many hybrid combinations have been reported, including Epinephelus costae × E. marginatus (Glamuzina et al ., 1999), E. coioides (♀) × E. lanceolatus (♂) (Wu et al ., 2014), E. awoara (♀) × E. tukula (♂) (Chen et al ., 2021), E. moara (♀) × E. lanceolatus (♂) (Liu et al ., 2021) and E. fuscoguttatus (♀) × E. polyphekadion (♂) (James et al ., 1999). Hybrid groupers have faster growth rates, greater disease resistance, better meat quality and higher economic value than purebred groupers (Bunlipatanon & U‐taynapun, 2017; Huang et al ., 2014; James et al ., 1999; Nankervis et al ., 2022; Sugama et al ., 2014; Zhou et al ., 2020).…”

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confidence: 99%

“…E. awoara (♀) Â E. tukula (♂) (Chen et al, 2021), E. moara (♀) Â E. lanceolatus (♂) (Liu et al, 2021) and E. fuscoguttatus (♀) Â E. polyphekadion (♂) (James et al, 1999). Hybrid groupers have faster growth rates, greater disease resistance, better meat quality and higher economic value than purebred groupers (Bunlipatanon & U-taynapun, 2017;Huang et al, 2014;James et al, 1999;Nankervis et al, 2022;Sugama et al, 2014;Zhou et al, 2020).…”

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Genetic characteristics and growth patterns of the hybrid grouper derived from the hybridization of Epinephelus fuscoguttatus (female) × Epinephelus polyphekadion (male)

Cao

Chen

Hou

et al. 2022

Journal of Fish Biology

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Hybridization is one of the primary methods used to cultivate farmed grouper species. The hybrid grouper derived from crossing Epinephelus fuscoguttatus (♀) and E. polyphekadion (♂) exhibits growth superiority over its parents. The genetic characteristics and growth patterns of the hybrid grouper have not yet been defined. This study confirms the ploidy level of the hybrid grouper (2n = 48) using chromosome count analysis and flow cytometry. The 5S rDNA family was used to evaluate genetic diversity. Only one 5S class ($400 bp) was detected in the hybrid grouper, which could be used to distinguish between two different types based on nucleotide sequences, likely representing homologous unit classes from the female and male parental species. Growth patterns of 5-8-month-old hybrid groupers were also monitored. In this phase, a positive allometric growth pattern in body mass with total length was found. Body height and body mass were significantly correlated based on correlation and path coefficient, suggesting that body height could serve as an excellent index to increase body mass. These results aid our understanding of the genetic evolution of the hybrid grouper and inform the development of improved rearing techniques.genetic characteristics, growth pattern, hybrid grouper, rDNA family 1 | INTRODUCTION Grouper is regarded as a commercially important and high-value marine fish because of its high market demand and low availability in natural waters. Hybridization is an effective tool for cultivating highquality farmed grouper species. Many hybrid combinations have been reported, including Epinephelus costae Â E. marginatus (Glamuzina et al., 1999), E. coioides (♀) Â E. lanceolatus (♂) (Wu et al., 2014),

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