Publications (3)2.57 Total impact
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Article: Novel polymorphism of the canine dopamine receptor D4 gene intron II region
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ABSTRACT: Various dog breeds are remarkably different from each other not only in their sizes and shapes but also in behavioral traits, suggesting that some of these characteristics are under genetic control. However, little is known about genes related to behavioral traits in canine species. In humans, it has been reported that the dopamine receptor D4 gene (DRD4) includes polymorphism at several regions that relate to personality or psychiatric disorders. In an earlier study by the authors of the present study, the polymorphisms in canine DRD4 exon III and exon I regions were reported. In the present study, a novel polymorphism in canine DRD4 intron II was found based on a 17 base pair insertion/deletion, and the two alleles detected were named P (shorter allele) and Q (longer allele). The allelic distribution in 28 breeds of dog, including a total of 1114 unrelated individuals, were then investigated. Both P and Q alleles were detected in most of the breeds investigated; however, the frequencies of P and Q differed greatly between breeds. With respect to classification based on breed origin, P and Q alleles were frequent in Occidental and Oriental breeds, respectively. Furthermore, two subspecies of wolves, the ancestors of dogs, were analyzed for the comparison of allele frequencies with dogs, and the P allele was predominant in both European and Chinese wolves.Animal Science Journal 01/2005; 76(1):81 - 86. · 0.86 Impact Factor -
Article: Twenty‐eight new microsatellite loci in chicken and their cross‐species amplification in Japanese quail and helmeted guinea fowl
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ABSTRACT: Twenty-eight original chicken microsatellite markers were isolated and characterized to determine their utility as cross-reactive markers for comparative genetic mapping in the order Galliformes. Primer pairs were typed in 12 unrelated chickens and also tested on Japanese quail and helmeted guinea fowl deoxyribonucleic acid (DNA). Polymorphism was observed in 23 (82.1%) of the markers and the average number of alleles per locus was 2.9 while the mean heterozygosity was 0.19. Eleven (39.3%) of the chicken markers cross-reacted with Japanese quail DNA and 2 (7.1%) with helmeted guinea fowl DNA. The cross-reactive markers described would serve as useful resources for comparative genetic mapping in poultry species belonging to the order Galliformes.Animal Science Journal 07/2003; 74(4):255 - 259. · 0.86 Impact Factor -
Article: Molecular sexing of Japanese cormorants used for traditional fishing on the Nagara River in Gifu City
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ABSTRACT: The Japanese cormorants used in traditional fishing in Japan are wild derived and their sex cannot be determined from their appearance. Applicability of molecular sex determination based on the size difference between CHD1Z and CHD1W introns was confirmed in male and female Japanese cormorants whose sexes had been ascertained by pathological autopsy. All of 21 birds of unknown sex reared by a cormorant fishing master were identified as males. The molecular sexing method will provide valuable information on sex differences of wild Japanese cormorants, including tameness, trainability, behavior and fishing capability, as well as for future trials involving artificial reproduction.Animal Science Journal 12/2002; 73(5):417 - 420. · 0.86 Impact Factor
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Institutions
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2002–2005
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Gifu University
- Faculty of Applied Biological Sciences
Gifu-shi, Gifu-ken, Japan -
Hokkaido University
- Faculty of Science
Sapporo-shi, Hokkaido, Japan
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