The development of genetically improved red tilapia lines through the backcross breeding of two Oreochromis niloticus strains

Patterns of colour inheritance from crossbreeding between Red hybrid tilapia (Oreochromis sp.) and GIFT tilapia (Oreochromis niloticus)

“…Nevertheless, the intermediate (mixed red-wild type) colour pattern observed in the F hybrids, F2 hybrids and 1 backcrosses raised question on whether the pattern of inheritance truly follow the simple Mendelian dominant-recessive pattern commonly found in Red hybrid tilapia as suggested by previous studies (Wohlfarth et al, 1990;Reich et al, 1990;Rajaee et al, 2010;Lago et al, 2017). Fig.…”

“…Although, the genetic assessment of red body color in tilapia is not fully understood, the red colouration in O. niloticus and most red hybrid tilapia are believed to be controlled by a dominant-inheritance (Lago et al, 2017;Reich et al, 1990;Ferreira 1989). Accordingly, the red body colour in O. niloticus is controlled by a single dominant allele where both homozygous RR or heterozygous Rr produce red body colour while the normal wild type (dark) are controlled by a recessive allele (rr) (Reich et al, 1990).…”

Towards increasing production of genetically improved farmed types in aquaculture

“…Kasetsart University has partnered with the private sector in selective breeding of African catfish, Clarias gariepinus (Srimai et al 2020) and snakeskin gourami, Trichopodus pectoralis (Chatchaiphan et al 2019). In Brazil, the Sao Paulo Research Foundation (FAPESP) supported development of selectively bred red tilapia farmed types (Lago et al 2017) which were adopted by the private sector. A general challenge is that it is difficult to get private-sector engagement at the outset of breeding programmes, especially for low-value aquaculture species important to food security.…”

“…In Brazil, the Sao Paulo Research Foundation (FAPESP) supported development of selectively bred red tilapia farmed types (Lago et al . 2017) which were adopted by the private sector. A general challenge is that it is difficult to get private‐sector engagement at the outset of breeding programmes, especially for low‐value aquaculture species important to food security.…”

Transcriptome Profiling Revealed Basis for Growth Heterosis in Hybrid Tilapia (Oreochromis niloticus ♀ × O. aureus ♂)

“…China is the largest producer of tilapia with a production about 1.65 million tons in 2020 [22]. Crossbreeding is a common strategy used for genetic improvement within tilapia species [23,24]. Hybrid tilapia, produced from the hybridization of maternal O. niloticus and paternal O. aureus, are popular due to the high male percentage, which contributed significantly to the total tilapia production in China [24].…”