Allozyme revealed substantial genetic diversity between hatchery stocks of Siamese fighting fish, Betta splendens, in the province of Nakornpathom, Thailand

Meejui, Oamduen; Sukmanomon, Srijanya; Na-Nakorn, Uthairat

doi:10.1016/j.aquaculture.2005.03.020

Cited by 15 publications

(15 citation statements)

References 21 publications

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“…Results from the model‐based cluster analyses also reflected the genetic admixture of several genetic stocks in hatcheries. Such strategy seemed to increase the mean number of alleles and heterozygosities in some other aquaculture species, such as, Siamese fighting fish, Betta splendens (Mejui, Sukmanomon & Na‐Nakorn ), African catfish, Clarias gariepinus (Van der Bank, Grober & du Preez ) and striped catfish, Pangasianodon hypophthalmus (Na‐Nakorn & Moeikum ).…”

Section: Discussionmentioning

confidence: 99%

Genetic relatedness and differentiation of hatchery populations of Asian seabass (Lates calcarifer) (Bloch, 1790) broodstock in Thailand inferred from microsatellite genetic markers

et al. 2014

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After more than 20 years of hatchery production of Asian seabass in Thailand, genetic information is still lacking for effective genetic management and a selective breeding programme. This study aimed to evaluate genetic status of existing hatchery populations and genetic consequences of a selective breeding attempt. We examined genetic relatedness in seven hatchery samples, including a selectively bred population (RACF-F1), compared with three wild samples using 11 microsatellite loci. Genetic diversity and relatedness values within most hatchery samples, except for RACF-F1, did not differ from those of wild populations (P > 0.05). RACF-F1 had the lowest allelic diversity and effective population size (A r = 6.99; N e = 7.8) and highest relatedness values (mean r xy = 0.075-0.204). Pairwise Φ ST values, principal component analysis and modelbased cluster analyses revealed three genetically distinct hatchery groups: Eastern Thailand (CHN, RACF, NSCF and SKCF), Southern Thailand (NICA) and the Andaman Sea (STCF). Results suggest that exiting domestic populations capture reasonable amount of genetic variation and can be useful for a base population for genetic improvement programmes. In addition, given the rapid increase in relatedness that we observed in one selectively bred population, we recommend using selection methods and hatchery practices that reduce variability in family contribution in the subsequent generations.

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Section: Discussionmentioning

confidence: 99%

Genetic relatedness and differentiation of hatchery populations of Asian seabass (Lates calcarifer) (Bloch, 1790) broodstock in Thailand inferred from microsatellite genetic markers

et al. 2014

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“…After comparing hatchery stocks of B. splendens in Nakorn Pathom province by studying their allozymes, Meejui et al 14 concluded that the genetic diversity of hatchery populations of Siamese fighting fish in Thailand was marked with a slight decline in allele diversity and proportion of polymorphic loci while heterozygosity increased. However, sufficient genetic diversity existed among populations and would greatly benefit genetic improvement programmes of this species.…”

Section: Classical and Molecular Geneticsmentioning

confidence: 99%

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Monvises¹,

Nuangsaeng²,

Sriwattanarothai³

et al. 2009

ScienceAsia

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ABSTRACT:The Siamese fighting fish, of which Betta splendens is representative, is gaining popularity as judged by increasing export values and demands for novel types worldwide, especially the ornamental ones. However, relatively little is known about the bettas scientifically. In this review we cover what is known about the desired morphology and pigments, genetics, aquaculture, diseases and feeds involved in breeding bettas. We also propose breeding the bettas for domestic enjoyment and export by exploiting current knowledge of gene technology and molecular developmental biology in addition to the use hitherto of only classical genetics. Other aspects of fish culture such as feeds, disease prevention and water quality should also be scientifically studied and improved upon. Because of dwindling and worsening habitats in Thailand, more studies on biodiversity and work towards species conservation of the wild types are needed.

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“…As a freshwater fish species indigenous to Southeast Asia, the Siamese fighting fish Betta splendens is one of the most commercially important labyrinth fishes in ornamental fish industry. Among the thousands of aquarium fish species and varieties traded worldwide, B. splendens is very popular for its notable value owing to the attractiveness such as variety of color and scale pattern, body shape, fin designs and ease of artificial cultivation in poor quality water [1, 2]. Like some other teleost fishes, B. splendens exhibits a distinct reproductive and paternal care behavior [3], whereas there are significant differences in behavior typicality between males and females.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, microsatellite marker development for non-model organisms remains obstructed because of the limitations of time and cost. So far just a few population genetics study has been executed in B. splendens , including microsatellite markers development in small quantities [1] and genetic diversity analysis by means of allozyme markers [2]. The scant marker resource severely impedes the research progress of population genetics and genomics in fighting fish.…”

Section: Introductionmentioning

confidence: 99%

De novo transcriptomic characterization of Betta splendens for identifying sex-biased genes potentially involved in aggressive behavior modulation and EST-SSR maker development

Yang

Wang

et al. 2018

Preprint

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Betta splendens is not only a commercially important labyrinth fish but also a nice research model for understanding the biological underpinnings of aggressive behavior. However, the shortage of basic genetic resource severely inhibits investigations on the molecular mechanism in sexual dimorphism of aggressive behavior typicality, which are essential for further behavior-related studies. There is a lack of knowledge regarding the functional genes involved in aggression expression. The scarce marker resource also impedes research progress of population genetics and genomics. In order to enrich genetic data and sequence resources, transcriptomic analysis was conducted for mature B. splendens using a multiple-tissues mixing strategy. A total of 105,505,486 clean reads were obtained and by de novo assembly, 69,836 unigenes were generated. Of which, 35,751 unigenes were annotated in at least one of queried databases. The differential expression analysis resulted in 17,683 transcripts differentially expressed between males and females. Plentiful sex-biased genes involved in aggression exhibition were identified via a screening from Gene Ontology terms and Kyoto Encyclopedia of Genes and Genomes pathways, such as htr, drd, gabr, cyp11a1, cyp17a1, hsd17b3, dax1, sf-1, hsd17b7, gsdf1 and fem1c. These putative genes would make good starting points for profound mechanical exploration on aggressive behavioral regulation. Moreover, 12,751 simple sequence repeats were detected from 9,617 unigenes for marker development. Nineteen of the 100 randomly selected primer pairs were demonstrated to be polymorphic. The large amount of transcript sequences will considerably increase available genomic information for gene mining and function analysis, and contribute valuable microsatellite marker resources to in-depth studies on molecular genetics and genomics in the future.

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Allozyme revealed substantial genetic diversity between hatchery stocks of Siamese fighting fish, Betta splendens, in the province of Nakornpathom, Thailand

Cited by 15 publications

References 21 publications

Genetic relatedness and differentiation of hatchery populations of Asian seabass (Lates calcarifer) (Bloch, 1790) broodstock in Thailand inferred from microsatellite genetic markers

Genetic relatedness and differentiation of hatchery populations of Asian seabass (Lates calcarifer) (Bloch, 1790) broodstock in Thailand inferred from microsatellite genetic markers

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De novo transcriptomic characterization of Betta splendens for identifying sex-biased genes potentially involved in aggressive behavior modulation and EST-SSR maker development

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