Fuchs Jérôme, Zuccon Dario. 2018: On the genetic distinctiveness of tailorbirds (Cisticolidae: Orthotomus) from the South-east Asian mainland with the description of a new subspecies. Avian Research, 9(1): 31. DOI: 10.1186/s40657-018-0123-8
Citation: Fuchs Jérôme, Zuccon Dario. 2018: On the genetic distinctiveness of tailorbirds (Cisticolidae: Orthotomus) from the South-east Asian mainland with the description of a new subspecies. Avian Research, 9(1): 31. DOI: 10.1186/s40657-018-0123-8

On the genetic distinctiveness of tailorbirds (Cisticolidae: Orthotomus) from the South-east Asian mainland with the description of a new subspecies

Funds: 

a Synthesys grant made available to J. Fuchs by the European Community-Research Infrastructure Action under the FP6 Structuring the European Research Area Program SE-TAF-7153

More Information
  • Corresponding author:

    fuchs@mnhn.fr

  • Received Date: 13 Feb 2018
  • Accepted Date: 09 Sep 2018
  • Available Online: 24 Apr 2022
  • Publish Date: 24 Sep 2018
  • Background 

    The Cambodian Tailorbird (Orthotomus chaktomuk) was one of the most recent major ornithological discoveries in South-east Asia as it originated from lowland seasonally flooded scrub within the densely inhabited floodplain around the Tonle Sap, Mekong and Bassac rivers (Cambodia). The Cambodian Tailorbird is sister to the Dark-necked Tailorbird (O. atrogularis) with very limited genetics and biometric differentiation. Between 2004 and 2012, evidences of a new population of Ashy Tailorbird (O. ruficeps) in SE Cambodia/Vietnam accumulated but no museum specimens were ever reported. The Ashy Tailorbird currently consists of eight subspecies among which the closest geographical populations, O. r. cineraceus (SE Burma to Malay Peninsula, Sumatra, Bangka and Belitung) and O. r. borneoensis (Borneo), are allopatric. Subspecific identification of the Cambodian Ashy Tailorbirds individuals was not possible because of the limited differences in plumage among subspecies.

    Methods 

    We inspected the Orthotomus ruficeps specimens housed at the Museum National d'Histoire Naturelle (Paris) and discovered five specimens of O. ruficeps collected by Louis Rodolphe Germain in 'Cochinchina' (corresponding to southern Vietnam) during the nineteenth century. We sequenced one mitochondrial locus and gathered biometric data from these specimens and compared them with other Orthotomus lineages.

    Results 

    The Ashy Tailord population from SE Cambodia and Vietnam is distinct from the two geographically close subspecies O. r. borneoensis (1.7%) and O. r. cineraceus (1.3%). O. chaktomuk is nested within O. atrogularis in the mitochondrial gene tree. The SE Cambodia/Vietnam population of O. ruficeps is distinct from the two other subspecies in bill shape.

    Conclusion 

    Our study described the biometric and molecular distinctiveness of a recently re-discovered population of Ashy Tailord in SE Cambodia and Vietnam and suggests that this population constitutes an independent evolutionary lineage that we describe here as a new subspecies. The newly described Cambodian Tailorbird is nested within the Dark-necked Tailorbird and the genetic divergence is much lower than initially described (0.4?0.7% vs 1.1?1.4%).

  • Correction to: Avian Res (2018) 9:31

    https://doi.org/10.1186/s40657-018-0123-8

    Unfortunately, the original article (Fuchs and Zuccon 2018) contained some errors. The Tables 1, 2 and Additional file 1: Table S2 were displayed incorrectly. The correct tables can be found below.

    Table  1.  Details of the six specimens of Orthotomus rufceps from southern Vietnam (original label mention is Cochinchina) collected by Louis Rodolphe Germain and representing, to our knowledge, the only specimens deposited in natural history museums
    Collector Catalog number Sex Collection Date Locality Country
    Germain L.R. MNHN ZO 1866-573 Female 28 February 1864 'Cochinchina' Vietnam
    Germain L.R. MNHN ZO 1882-738 Male 'Cochinchina' Vietnam
    Germain L.R. MNHN ZO 1882-739 Female 21 April 1865 'Cochinchina' Vietnam
    Germain L.R. MNHN ZO 1882-740 Female 'Cochinchina' Vietnam
    Germain L.R. MNHN ZO 1882-742 Male 29 February 1864 'Cochinchina' Vietnam
    Germain L.R. SMF 78404 Male 'Cochinchina' Vietnam
    The specimen in Senckenberg was previously cataloged at MNHN with the number MNHN ZO 1882-741; this specimen was not sequenced
     | Show Table
    DownLoad: CSV
    Table  2.  Details of the nine specimens of Orthotomus sequenced as part of this study
    Species Collector Catalog number Collection date Locality Country
    ruficeps Germain L.R. MNHN ZO 1866-573 28 February 1864 'Cochinchina' Vietnam
    ruficeps Germain L.R. MNHN ZO 1882-738 'Cochinchina' Vietnam
    ruficeps Germain L.R. MNHN ZO 1882-739 21 April 1865 'Cochinchina' Vietnam
    ruficeps Germain L.R. MNHN ZO 1882-740 'Cochinchina' Vietnam
    ruficeps Germain L.R. MNHN ZO 1882-742 29 February 1864 'Cochinchina' Vietnam
    atrogularis Germain L.R. MNHN ZO 1882-728 13 April 1867 'Saigon, Cochinchina' Vietnam
    atrogularis J. Delacour/P. Jabouille MNHN ZO 1929-1463 27 February 1928 Phu-Qui Vietnam
    atrogularis J. Delacour/P. Jabouille MNHN ZO 1939-913 25 January 1930 Hoi-Xuan Vietnam
    atrogularis J. Roche/J. Thiney MNHN ZO 1989-120 17 December 1986 Trang Thailand
     | Show Table
    DownLoad: CSV

    Additional file 1: Table S2. Measurement details for the specimens included in the biometric analyses.

    The original article can be found online at https://doi.org/10.1186/s40657-018-0123-8.

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