title: Reproduction of wild birds via interspecies germ cell transplantation.
abstract: The present study was conducted to apply an interspecies germ cell transfer technique to wild bird reproduction. Pheasant (Phasianus colchicus) primordial germ cells (PGCs) retrieved from the gonads of 7-day-old embryos were transferred to the bloodstream of 2.5-day-old chicken (Gallus gallus) embryos. Pheasant-to-chicken germline chimeras hatched from the recipient embryos, and 10 pheasants were derived from testcross reproduction of the male chimeras with female pheasants. Gonadal migration of the transferred PGCs, their involvement in spermatogenesis, and production of chimeric semen were confirmed. The phenotype of pheasant progenies derived from the interspecies transfer was identical to that of wild pheasants. The average efficiency of reproduction estimated from the percentage of pheasants to total progenies was 17.5%. In conclusion, interspecies germ cell transfer into a developing embryo can be used for wild bird reproduction, and this reproductive technology may be applicable in conserving endangered bird species.
authors.affiliation: Department of Agricultural Biotechnology and Research Institute for Agriculture and Life Sciences, Seoul National University, Seoul 151-921, Korea.
authors.forename: Seok Jin
authors.initials: SJ
authors.lastname: Kang
authors.forename: Jin Won
authors.initials: JW
authors.lastname: Choi
authors.forename: Sun Young
authors.initials: SY
authors.lastname: Kim
authors.forename: Kyung Je
authors.initials: KJ
authors.lastname: Park
authors.forename: Tae Min
authors.initials: TM
authors.lastname: Kim
authors.forename: Young Mok
authors.initials: YM
authors.lastname: Lee
authors.forename: Heebal
authors.initials: H
authors.lastname: Kim
authors.forename: Jeong Mook
authors.initials: JM
authors.lastname: Lim
authors.forename: Jae Yong
authors.initials: JY
authors.lastname: Han
mesh_terms: D000818:Animals; D000835:Animals, Wild; D001947:Breeding / Q000379:methods*; D002642:Chick Embryo; D004625:Embryo, Nonmammalian / Q000166:cytology; D005260:Female; D046094:Galliformes / Q000196:embryology / Q000502:physiology*; D005854:Germ Cells / Q000637:transplantation*; D008297:Male; D027724:Reproductive Techniques, Assisted; D013094:Spermatozoa / Q000166:cytology; D018183:Transplantation Chimera / Q000196:embryology*; D014183:Transplantation, Heterologous