Publications by authors named "Aingorn Chaiyes"

Background/objectives: Accipitridae mitogenomes exhibit unique structural variations, including duplicated control regions (CRs) that undergo gradual degeneration into pseudo-CRs, revealing a complex evolutionary landscape. However, annotation of this characteristic in a subset of accipitrid genomes is lacking. Due to the taxonomic diversity of Accipitridae and the presence of understudied species, comprehensive mitogenomic studies are essential.

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The invasion of blackchin tilapia in Thailand is a critical ecological threat affecting native biodiversity and destabilizing ecosystems. It is also resulting in significant ecological and socio-economic impacts. Originally from West Africa and introduced globally for aquaculture, blackchin tilapia thrive in Thailand's brackish and freshwater ecosystems because of their high reproductive rates, environmental adaptability, and trophic plasticity.

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  • Thai fighting cock breeds in Thailand, such as Lueng Hang Khao and Pradu Hang Dam, have cultural significance and unique characteristics for fighting and consumption, but their genetic diversity is not well understood.
  • The study aimed to analyze the genetic variation and differentiation among these breeds using genotyping to understand the effects of human selection on their genetic structure.
  • Results indicated that artificial selection and genetic drift led to subpopulations within fighting cocks, highlighting the impact of breeding practices on genetic diversity and the need for effective management strategies.
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Objective: The remarkable adaptability to the environment, high growth rate, meat with good taste and aroma, and ornamental appearance of the Pradu Hang Dam (PDH) and Samae Dam (SD) chickens make them valuable for improvement of poultry production to enhance food security. However, despite their close phenotypic similarity, distinct classification of PDH and SD chickens remains controversial. Thus, this study aimed to clarify genetic origins and variation between PDH and SD chickens, genetic diversity and structures of PDH and SD chickens.

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  • - Hybrid sterility in catfish occurs due to differences in parental genomes affecting meiosis, which is crucial for reproduction.
  • - The study focused on bighead catfish and North African catfish, analyzing their genome divergence and meiotic behavior to understand sterility in their male hybrids.
  • - Results indicated that significant differences in satellite DNA (satDNA) between the parent species are likely responsible for meiotic failure, rather than differences in chromosome numbers.
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High levels of purine and uric acid, which are associated with health issues such as gout and cardiovascular disease, are found in the meat of fast-growing broiler chickens, which raises concerns about the quality of chicken meat and the health of the consumers who consume it. High genetic homogeneity and uniformity, particularly in genes involved in the synthesis of inosine monophosphate (IMP) and subsequent process of purine synthesis, which are associated with the meat quality, are exhibited in commercial broiler chickens owing to intensive inbreeding programs. Adenosine succinate lyase (ADSL) is a key enzyme involved in de novo purine biosynthetic pathway and its genetic polymorphisms affect IMP metabolism and purine content.

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  • The North African catfish (Clarias gariepinus) is important for aquaculture and food security, but closed breeding practices have reduced its reproductive performance, likely due to inbreeding depression.
  • A study assessed the genetic diversity of catfish populations in Thailand using microsatellite genotyping and mitochondrial DNA sequencing, revealing low inbreeding coefficients and significant genetic diversity across three populations.
  • The findings suggest that introducing new, well-documented populations into breeding programs could enhance genetic improvement and productivity of the North African catfish.
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The thermal stress caused by global climate change adversely affects the welfare, productivity, and reproductive performance of farm animals, including chickens, and causes substantial economic losses. However, the understanding of the genetic basis of the indigenous chicken adaptation to high ambient temperatures is limited. Hence, to reveal the genetic basis of thermal stress adaptation in chickens, this study investigated polymorphisms in the heat shock protein 70 (HSP70) and HSP90 genes, known mechanisms of cellular defense against thermal stress in indigenous and local chicken breeds and red junglefowls in Thailand.

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Microsatellites are polymorphic and cost-effective. Optimizing reduced microsatellite panels using heuristic algorithms eases budget constraints in genetic diversity and population genetic assessments. Microsatellite marker efficiency is strongly associated with its polymorphism and is quantified as the polymorphic information content ().

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DNA barcoding without assessing reliability and validity causes taxonomic errors of species identification, which is responsible for disruptions of their conservation and aquaculture industry. Although DNA barcoding facilitates molecular identification and phylogenetic analysis of species, its availability in clariid catfish lineage remains uncertain. In this study, DNA barcoding was developed and validated for clariid catfish.

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  • - Lao Pa Koi (LPK) chickens are a prized fighting breed in Thailand, known for their unique genetics derived from the combination of red junglefowls and domestic chickens, analyzed through microsatellite markers and mitochondrial DNA.
  • - The study found high genetic diversity in LPK chickens, identifying six mtDNA haplotypes and 182 microsatellite alleles, confirming their mixed genetic heritage.
  • - A spatial analysis revealed that the majority of the studied area is unsuitable for LPK chickens, with optimal elevation for their distribution being between 100-250 meters, highlighting important factors for their habitat and future breeding improvements.
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  • * The study utilized 28 microsatellite markers and mitochondrial D-loop sequencing to analyze the chicken's genetic diversity, revealing a total of 188 alleles and identifying several unique haplotypes, indicating a high level of genetic variation.
  • * Genetic introgression from red junglefowl and other indigenous breeds suggests that the Mae Hong Son chicken was domesticated over 200-300 years, showcasing its adaptation to highland environments and its cultural significance in Northern Thai communities.
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The gaur (Bos gaurus) is found throughout mainland South and Southeast Asia but is listed as an endangered species in Thailand with a decreasing population size and a reduction in suitable habitat. While gaur have shown a population recovery from 35 to 300 individuals within 30 years in the Khao Phaeng Ma (KPM) Non-Hunting Area, this has caused conflict with villagers along the border of the protected area. At the same time, the ecotourism potential of watching gaurs has boosted the local economy.

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Nipah virus (NiV) is a zoonotic virus that can pose a serious threat to human and livestock health. Old-world fruit bats (Pteropus spp.) are the natural reservoir hosts for NiV, and Pteropus lylei, Lyle's flying fox, is an important host of NiV in mainland Southeast Asia.

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Background: Bats are natural reservoirs for several highly pathogenic and novel viruses including coronaviruses (CoVs) (mainly Alphacoronavirus and Betacoronavirus). Lyle's flying fox (Pteropus lylei)'s roosts and foraging sites are usually in the proximity to humans and animals. Knowledge about age-specific pattern of CoV infection in P.

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