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Macropod hybrids are hybrids of animals within the family Macropodidae. Several macropod hybrids have been experimentally bred, including: 1. May have been so poorly fertile as to be considered sterile 2. Although the males had testes, they did not produce sperm and some were found to have Y-chromosome abnormalities. 3. In-vitro fertilization used Some hybrids between similar species have been achieved by housing males of one species and females of the other together to limit the choice of mate. To create a "natural" macropod hybrid, young animals of one species have been transferred to the pouch of another so as to imprint into them the other species. In-vitro fertilization has also been used and the fertilized egg implanted into a female of either species. ==References== * Poole, WE "Reproduction in the Two Species of Grey Kangaroos, Macropus Giganteus Shaw and M. Fuliginosus (Desmarest). Ii. Gestation, Parturition and Pouch Life." Australian Journal of Zoology 23(3) 333 - 353 (1975) * MJ Smith, DL Hayman and RM Hope, "Observations on the chromosomes and reproductive systems of four macropodine interspecific hybrids" Australian Journal of Zoology 27(6) 959 - 972 (1979) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Macropod hybrids」の詳細全文を読む スポンサード リンク
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