A most distant intergeneric hybrid offspring (Larcon) of lesser apes, <Emphasis Type="Italic">Nomascus leucogenys</Emphasis> and <Emphasis Type="Italic">Hylobates lar</Emphasis> |
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Authors: | Hirohisa Hirai Yuriko Hirai Hiroshi Domae Yoko Kirihara |
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Institution: | (1) Primate Research Institute, Kyoto University, Inuyama Aichi 484-8506, Japan;(2) Ishikawa Zoo, Tokusan-machi, Noumi, Ishikawa 923-1222, Japan |
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Abstract: | Unlike humans, which are the sole remaining representatives of a once larger group of bipedal apes (hominins), the “lesser
apes” (hylobatids) are a diverse radiation with numerous extant species. Consequently, the lesser apes can provide a valuable
evolutionary window onto the possible interactions (e.g., interbreeding) of hominin lineages coexisting in the same time and
place. In the present work, we employ chromosomal analyses to verify the hybrid ancestry of an individual (Larcon) produced
by two of the most distant genera of lesser apes, Hylobates (lar-group gibbons) and Nomascus (concolor-group gibbons). In addition to a mixed pelage pattern, the hybrid animal carries a 48-chromosome karyotype that consists
of the haploid complements of each parental species: Hylobates lar (n = 22) and Nomascus leucogenys leucogenys (n = 26). Studies of this animal’s karyotype shed light onto the processes of speciation and genus-level divergence in the lesser
apes and, by extension, across the Hominoidea. |
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Keywords: | |
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