Genetic changes, intra- and inter-specific introgression in farmed Nile tilapia (Oreochromis niloticus) in Thailand

Sukmanomon, Srijanya; Kamonrat, Wongpathom; Poompuang, Supawadee; Nguyen, Thuy Thi Thu; Bartley, D. M.; May, Bernie; Na-Nakorn, Uthairat

doi:10.1016/j.aquaculture.2011.10.025

Cited by 21 publications

(23 citation statements)

References 57 publications

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“…These values were high compared with 54.12% obtained from six populations of red hybrid tilapia (Briñez et al, 2011). Low levels of differentiation (Fst < 0.05) have been reported in some improved strains of Nile tilapia (Sukmanomon et al, 2012). However, the high differentiation of the Ghanaian population provides a basis for further improvement of the already available Akosombo strain.…”

Section: Genetic Variation Within Populationsmentioning

confidence: 99%

“…A single locus PCR for each of 15 primers (Table 2) based on (Rutten et al, 2004;Sukmanomon et al, 2012;Trọng, 2013) was undertaken. Each reaction mixture of 15 µl contained 1 µl of 10 pmol of forward and 1 µl of 1 pmol of reverse primers of the microsatellite, as well as Bioneer master mix (Bioneer Corporation, South Korea), 2 µl sterile molecular biology grade water and 2 µl of 100 ng/µl DNA.…”

Section: Microsatellite Primer Selection and Polymerase Chain Reactiomentioning

confidence: 99%

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Assessment of genetic variations of Nile Tilapia (Oreochromis niloticus L.) in the Volta Lake of Ghana using microsatellite markers

Mireku¹,

Kassam²,

Changadeya³

et al. 2017

Afr. J. Biotechnol.

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A study was conducted to investigate genetic diversity and population structure among populations of Nile tilapia Oreochromis niloticus (Cichlidae) in the Volta Lake of Ghana using microsatellite markers. Four hundred (400) fish specimens were obtained from nine naturally occurring subpopulations and one selectively bred strain, 'Akosombo strain'. These were characterized using 15 microsatellite loci. Twelve of the loci were multi-allelic, producing 2 to 11 alleles per locus while the effective number of expected alleles (Ne) ranged from 2.030 to 2.855. The observed heterozygosity (Ho) and expected heterozygosity (

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Section: Genetic Variation Within Populationsmentioning

confidence: 99%

Section: Microsatellite Primer Selection and Polymerase Chain Reactiomentioning

confidence: 99%

Assessment of genetic variations of Nile Tilapia (Oreochromis niloticus L.) in the Volta Lake of Ghana using microsatellite markers

Mireku¹,

Kassam²,

Changadeya³

et al. 2017

Afr. J. Biotechnol.

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“…Previous attempts to discriminate these strains were based on random amplification of polymorphic DNA (RAPD) (Bardakci & Skibinski, 1994) and on 5S rDNA (Alves-Costa et al, 2006). However, the problems related with RAPD replicability (Freeland et al, 2011) and the uncontrolled introgression of genes in Nile tilapia (Sukmanomon et al, 2012b) have rendered these techniques less applicable than other modern multilocus molecular markers. For instance, Van Bers et al (2012) described a pool of 384 single nucleotide polymorphisms (SNP) that could be used to differentiate individuals from different species and strains of Nile tilapia.…”

Section: Introductionmentioning

confidence: 99%

“…In addition, the development of many strains has led to the coexistence of different varieties and levels of hybridization among stocks, which clearly affects the accuracy of their identification. This many strains have different zootechnical characteristics, and the farming of interstrain hybrids may result in decreased productivity in fish farms (Sukmanomon et al, 2012a). Therefore, the accurate determination of species, subspecies, strains, and hybrids of farmed tilapia should be a priority to increase the production efficiency and reliability of Nile tilapia aquaculture.…”

Section: Introductionmentioning

confidence: 99%

“…However, the problems related with RAPD replicability (Freeland et al, 2011) and the uncontrolled introgression of genes in Nile tilapia (Sukmanomon et al, 2012b) have rendered these techniques less applicable than other modern multilocus molecular markers. For instance, Van Bers et al (2012) described a pool of 384 single nucleotide polymorphisms (SNP) that could be used to differentiate individuals from different species and strains of Nile tilapia. Likewise, microsatellite markers can also be adopted for this purpose.…”

Section: Introductionmentioning

confidence: 99%

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Identifying Nile tilapia strains and their hybrids farmed in Brazil using microsatellite markers

Baggio

Orélis-Ribeiro

Boeger

2016

Pesq. agropec. bras.

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-The objective of this work was to evaluate a Bayesian model-based clustering method to identify the strains of Nile tilapia (Oreochromis niloticus) individuals from fish farms in Southern Brazil. Assignment methods using nine microsatellite loci were applied to differentiate individuals of five reference strains (GIFT, GST, Nilótica, Chitralada, and Saint Peter) and to identify individuals of unknown strains from fish farms near the Itaipu reservoir and in the Uruguay River basin. The procedure assigned the correct strain in more than 90% of the cases and was also able to detect hybrids between strains. The obtained results showed that several fish farms in Southern Brazil cultivate more than one tilapia strain and even interstrain hybrids. The proposed methodology is a reliable tool for the identification of the strain origin of Nile tilapia individuals.

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On‐farm growth performance of different strains of tilapia, Oreochromis niloticus reared in earthen ponds

Abwao

Kyule

Jung'a

et al. 2023

Aquaculture Fish & Fisheries

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The growth of aquaculture sector in Kenya has been anchored on farmed Nile tilapia Oreochromis niloticus. Different strains of the species exist in Kenya with unknown quality due to lack of stock improvement programmes coupled by variations in breeding and management practices in different hatcheries. The seeds supplied to farmers have not exhibited good performance and resilience to changing climate. There is need to validate the quality of strains supplied to fish farmers in Kenya. This study sought to compare the growth performance of three strains of farmed Nile tilapia; Sagana strain (SAG‐F8) produced through selective breeding, super YY strain (KAM‐YY) from Kamuthanga fish farm and the local strain (LOC‐T) obtained from Siaya County. The fish were stocked in fertilised earthen ponds measuring 300 m2 in triplicates at 3 fish/m2. The fish were fed on 35% crude protein diet for 180 days at Bukani Aquapark located in Busia County, Kenya. There was no significant difference in mean weight gain (MWG) between SAG‐F8 and LOC‐T strain exhibiting 159.786 ± 6.76 g and 158.623 ± 4.67 g, respectively. However, under similar conditions, the KAM‐YY strain had a significantly lower MWG (131.74 ± 4.75 g) compared to the two strains. Food conversion ratio (FCR), specific growth rate (SGR) did not demonstrate any significant difference among the different strains. The body protein content in the SAG‐F8 fish strain was higher (65.40 ± 0.20%) followed by LOC‐T strain (61.23 ± 2.34%) and lastly KAM‐YY strain had the lowest (60.37 ± 0.89%). In this study, the impact of genetic improvement has been demonstrated to influence growth and feed efficiency as well as body composition. These improved strains will substantially increase fish production and productivity, hence, a positive impact on the fish farmers' livelihoods when supplied to the farmers and seed multipliers.

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Genetic changes, intra- and inter-specific introgression in farmed Nile tilapia (Oreochromis niloticus) in Thailand

Cited by 21 publications

References 57 publications

Assessment of genetic variations of Nile Tilapia (Oreochromis niloticus L.) in the Volta Lake of Ghana using microsatellite markers

Assessment of genetic variations of Nile Tilapia (Oreochromis niloticus L.) in the Volta Lake of Ghana using microsatellite markers

Identifying Nile tilapia strains and their hybrids farmed in Brazil using microsatellite markers

On‐farm growth performance of different strains of tilapia, Oreochromis niloticus reared in earthen ponds

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