Chromosome evolution in the Malayan gaur (Bos gaurus hubbacki) (Abstract/Comunicazione in rivista)

Type
Label
  • Chromosome evolution in the Malayan gaur (Bos gaurus hubbacki) (Abstract/Comunicazione in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1007/s10577-012-9313-0 (literal)
Alternative label
  • Mamat-Hamidi K.1, Hilmi M.1, Idris I.1, Di Berardino D.2, Iannuzzi L.3 (2012)
    Chromosome evolution in the Malayan gaur (Bos gaurus hubbacki)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Mamat-Hamidi K.1, Hilmi M.1, Idris I.1, Di Berardino D.2, Iannuzzi L.3 (literal)
Pagina inizio
  • 800 (literal)
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  • 20 (literal)
Rivista
Note
  • Abstract (literal)
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  • 1 Animal Science Department, Faculty of Agriculture, University Putra Malaysia,43400 UPM Serdang, Selangor, Malaysia 2 DISSPAPA Dept., University of Naples Federico II, Portici (Na), Italy 3 National Research Council (CNR), ISPAAM, Laboratory of Animal Cytogenetics and Gene Mapping, Naples, Italy. (literal)
Titolo
  • Chromosome evolution in the Malayan gaur (Bos gaurus hubbacki) (literal)
Abstract
  • The gaur (Bos gaurus) is a native cattle of the rainforests of Southeast Asia, and one of the many wild cattle species currently listed as vulnerable and endangered. Recently, the Asian Wild Cattle Conservation Assessment and Management Plan recognized three subspecies of gaur: Bos gaurus gaurus (India, Nepal), bos gaurus laosiensis (Myanmar to China) and Bos gaurus hubbacki (Malaysia, Thailand). The global population of wild gaur ranges from 13,000 to 30,000 while in Malaysia a minimum population of 273-333 has been estimated. As with other bovidae, chromosome studies indicate that the gaur evolved from a wild ancestor, differentiating the domestic taurine and zebu cattle. Centric fusion between chromosomes 2 and 28 of the ancestral cattle karyotype gave rise to the Indian gaur karyotype (2n058), with one pair of submetacentric autosomes, while other studies reported that the Thailand gaur (2n056) has two pairs of submetacentric autosomes, 2/28 and 1/29. So far, very little is known about the chromosomal status of the Malayan gaur. A GTG-banding comparison 800 Chromosome Res (2012) 20:779-814 between the chromosomes of gaur (Bos gaur hubbacki, BGA, 2n056) and those of domestic cattle (Bos taurus, BTA, 2n060) was performed to establish chromosome homoeologies or differences between the two species. The two biarmed chromosomes of gaur (BGA1 and BGA2) were originated by centric fusion translocations between homoeologous cattle chromosomes 1/29 (BGA1) and 2/28 (BGA2). High resolution GTG-banding comparison between BGA1 and BTA1/BTA29 revealed that BGA1q differentiated from BTA1 by a paracentric inversion of a large and proximal chromosome region (BTA1q13-q32). To our knowledge, this is the first case of a bovid biarmed chromosome originated by centric fusion and paracentric inversion during karyotype evolution. The CBG-banding pattern showed clear C-bands in all autosomes, although the two biarmed pairs showed smaller C-bands, especially in BGA2. The results are discussed on the basis of previous results obtained in other bovid species, including the carriers of rob(1;29) of cattle, the most known and widely spread chromosome abnormality in Bos taurus. (literal)
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