| monophyletic origin and unique dispersal patterns of domestic fowls. | with the aim of elucidating in greater detail the genealogical origin of the present domestic fowls of the world, we have determined mtdna sequences of the d-loop regions for a total of 21 birds, of which 12 samples belong to red junglefowl (gallus gallus) comprising three subspecies (six gallus gallus gallus, three gallus gallus spadiceus, and three gallus gallus bankiva) and nine represent diverse domestic breeds (gallus gallus domesticus). we also sequenced four green junglefowl (gallus variu ... | 1996 | 8692897 |
| intact eav-hp endogenous retrovirus in sonnerat's jungle fowl. | the eav-hp group of chicken endogenous retrovirus elements was previously shown to be defective, with large deletions of the pol gene. in this report, we demonstrate that genomes of other gallus species also maintain eav-hp elements with similar deletions. the chicken eav-hp1 locus was detected in both red (gallus gallus gallus) and sonnerat's (gallus sonneratii) jungle fowl with identical integration sites, indicating that these elements had integrated before separation of the gallus species. f ... | 2001 | 11160706 |
| the origin and genetic diversity of chinese native chicken breeds. | the first 539 bases of mitochondrial dna d-loop region of six chinese native chicken breeds (gallus gallus domesticus) were sequenced and compared to those of the red junglefowl (gallus gallus), the gray junglefowl (gallus sonneratii), the green junglefowl (gallus varius) and lafayette's junglefowl (gallus lafayettei) reported in genbank, and the phylogenetic trees for the chickens were constructed based on the d-loop sequences. the results showed that the four species of the genus gallus had gr ... | 2002 | 12137331 |
| identification of the yellow skin gene reveals a hybrid origin of the domestic chicken. | yellow skin is an abundant phenotype among domestic chickens and is caused by a recessive allele (w*y) that allows deposition of yellow carotenoids in the skin. here we show that yellow skin is caused by one or more cis-acting and tissue-specific regulatory mutation(s) that inhibit expression of bcdo2 (beta-carotene dioxygenase 2) in skin. our data imply that carotenoids are taken up from the circulation in both genotypes but are degraded by bcdo2 in skin from animals carrying the white skin all ... | 2008 | 18454198 |
| mitochondrial dna-based analysis of genetic variation and relatedness among sri lankan indigenous chickens and the ceylon junglefowl (gallus lafayetti). | indigenous chickens (ic) in developing countries provide a useful resource to detect novel genes in mitochondrial and nuclear genomes. here, we investigated the level of genetic diversity in ic from five distinct regions of sri lanka using a pcr-based resequencing method. in addition, we investigated the relatedness of ic to different species of junglefowls including ceylon (cjf; gallus lafayetti), a subspecies that is endemic to sri lanka, green (gallus varius), grey (gallus sonneratii) and red ... | 2009 | 18945292 |
| chicken domestication: from archeology to genomics. | current knowledge on chicken domestication is reviewed on the basis of archaeological, historical and molecular data. several domestication centres have been identified in south and south-east asia. gallus gallus is the major ancestor species, but gallus sonneratii has also contributed to the genetic make-up of the domestic chicken. genetic diversity is now distributed among traditional populations, standardized breeds and highly selected lines. knowing the genome sequence has accelerated the id ... | 2011 | 21377614 |
| molecular phylogeny of some avian species using cytochrome b gene sequence analysis. | veritable identification and differentiation of avian species is a vital step in conservative, taxonomic, forensic, legal and other ornithological interventions. therefore, this study involved the application of molecular approach to identify some avian species i.e. chicken (gallus gallus), muskovy duck (cairina moschata), japanese quail (coturnix japonica), laughing dove (streptopelia senegalensis), and rock pigeon (columba livia). genomic dna was extracted from blood samples and partial sequen ... | 2015 | 27175180 |
| early holocene chicken domestication in northern china. | chickens represent by far the most important poultry species, yet the number, locations, and timings of their domestication have remained controversial for more than a century. here we report ancient mitochondrial dna sequences from the earliest archaeological chicken bones from china, dating back to ∼ 10,000 b.p. the results clearly show that all investigated bones, including the oldest from the nanzhuangtou site, are derived from the genus gallus, rather than any other related genus, such as p ... | 2014 | 25422439 |
| renal and nasal cryptosporidiosis in a junglefowl (gallus sonneratii). | | 1986 | 3765316 |
| breakdown of isolation mechanisms in two species of captive junglefowl (gallus gallus and gallus sonneratii). | | 1968 | 28564768 |
| the domestic bco2 allele buffers low-carotenoid diets in chickens: possible fitness increase through species hybridization. | domestic animals are adapted to conditions vastly different from those of their wild ancestors, and this is particularly true for their diets. the most numerous of all domestic species, the chicken, originated from the red junglefowl (rjf), a native of subtropical forests in southeast asia. surprisingly however, in domestic chicken breeds, a common haplotype of the β-carotene oxygenase 2 (bco2) gene, which is involved in carotenoid metabolism, is introgressed from a related species, the gray jun ... | 2019 | 31160321 |
| levels and distribution pattern of organochlorine pesticide residues in eggs of 22 terrestrial birds from tamil nadu, india. | long-term monitoring is essential to assess the patterns and distribution of the residues of organochlorine pesticides (ocps) in biota. bird eggs have several advantages than other environmental matrixes, which have been used extensively to portray the accumulation and distribution of ocps. the present study investigated the organochlorine pesticide (ocp) residues in eggs of 22 species of terrestrial birds collected from tamil nadu, india. eggs found abandoned were collected during nest monitori ... | 2020 | 32642894 |