Divergence history of the Rufous-tailed Tailorbird (<i>Orthotomus sericeus</i>) of Sundaland: Implications for the biogeography of Palawan and the taxonomy of island species in general

Lim, Haw Chuan; Chua, Vivien L.; Benham, Phred M.; Oliveros, Carl H.; Rahman, Mustafa Abdul; Moyle, Robert G.; Sheldon, Frederick H.

doi:10.1642/auk-14-80.1

Cited by 12 publications

(7 citation statements)

References 59 publications

(66 reference statements)

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“…1.5 mya obtained in our study). Although Palawan is part of the Sunda Shelf, its connection with the rest of the Sunda islands is tenuous due to the deep sea channel (140 m) that permanently separates it from Borneo, even during periods of extremely low sea level (Esselstyn et al, ; Lim et al, ). Palawan came to its current location northeast of Borneo c .…”

Section: Discussionmentioning

confidence: 99%

“…10 mya (Hall, ) but likely experienced periodic rainforest contraction, even as recently as 21 kya (Wurster et al, ), which would have affected population demography of its rainforest species. Lim et al () reviewed mtDNA divergence levels between pairs of avian sister taxa found on northern Borneo and Palawan, and they fell mainly into two groups: deep (7.9%–14%) and shallow (0.3%–0.9%). The divergence level of I. puella appears to be intermediate, similar to the rufous‐tailed tailorbird Orthotomus sericeus (mtDNA divergence 1.7%; divergence time estimated from eight loci at 1.2 mya, as opposed to 1.5 mya in I. puella ).…”

Section: Discussionmentioning

confidence: 99%

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Opening the door to greater phylogeographic inference in Southeast Asia: Comparative genomic study of five codistributed rainforest bird species using target capture and historical DNA

Lim

Shakya

Harvey

et al. 2020

Ecology and Evolution

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Indochina and Sundaland are biologically diverse, interconnected regions of Southeast Asia with complex geographic histories. Few studies have examined phylogeography of bird species that span the two regions because of inadequate population sampling. To determine how geographic barriers/events and disparate dispersal potential have influenced the population structure, gene flow, and demographics of species that occupy the entire area, we studied five largely codistributed rainforest bird species: Arachnothera longirostra, Irena puella, Brachypodius atriceps, Niltava grandis, and Stachyris nigriceps. We accomplished relatively thorough sampling and data collection by sequencing ultraconserved elements (UCEs) using DNA extracted from modern and older (historical) specimens. We obtained a genome‐wide set of 753–4,501 variable loci and 3,919–18,472 single nucleotide polymorphisms. The formation of major within‐species lineages occurred within a similar span of time (0.5–1.5 mya). Major patterns in population genetic structure are largely consistent with the dispersal potential and habitat requirements of the study species. A population break across the Isthmus of Kra was shared only by the two hill/submontane insectivores (N. grandis and S. nigriceps). Across Sundaland, there is little structure in B. atriceps, which is a eurytopic and partially frugivorous species that often utilizes forest edges. Two other eurytopic species, A. longirostra and I. puella, possess highly divergent populations in peripheral Sunda Islands (Java and/or Palawan) and India. These species probably possess intermediate dispersal abilities that allowed them to colonize new areas, and then remained largely isolated subsequently. We also observed an east–west break in Indochina that was shared by B. atriceps and S. nigriceps, species with very different habitat requirements and dispersal potential. By analyzing high‐throughput DNA data, our study provides an unprecedented comparative perspective on the process of avian population divergence across Southeast Asia, a process that is determined by geography, species characteristics, and the stochastic nature of dispersal and vicariance events.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Opening the door to greater phylogeographic inference in Southeast Asia: Comparative genomic study of five codistributed rainforest bird species using target capture and historical DNA

Lim

Shakya

Harvey

et al. 2020

Ecology and Evolution

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“…The specimen in Senckenberg was previously cataloged at MNHN with the number MNHN ZO 1882-741; this specimen was not sequenced Our new sequences were analysed together with all ND2 sequences published by Sheldon et al (2012), and Lim et al (2014). Newly generated sequences have been deposited in Genbank (Accession numbers: MH507590-MH507598).…”

Section: Table 1 Details Of the Six Specimens Of Orthotomus Ruficeps From Southern Vietnam (Original Label Mention Is Cochinchina) Collecmentioning

confidence: 99%

“…Wing length was measured to the nearest 0.5 mm to be more closely related to the Cambodian/Vietnam populations than populations from continental Southeast Asia based on described phylogenetic patterns (e.g. Sheldon et al 2009;Lim et al 2014;Fuchs et al 2015).…”

Section: Table 3 Average/standard Deviation and Minimum-maximum Values For Six Biometric Characters For Orthotomus Lineagesmentioning

confidence: 99%

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

Fuchs

Zuccon

2018

Avian Res

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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%).

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“…Species delimitation may be controversial due to different philosophies and species concept applicability [ 123 ]. This may be even more complicated when genetic divergence is not accompanied by clear morphological difference and when this divergence has occurred within the same island e. g. [ 124 ]. However, genetic differentiation may occur without corresponding morphological differentiation [ 125 ], and recent work in the Philippine archipelago has demonstrated that speciation has occurred within a single island [ 36 , 37 , 38 , 39 , 40 , 42 , 43 , 46 , 104 , 105 ].…”

Section: Discussionmentioning

confidence: 99%

Genetic Differentiation in Insular Lowland Rainforests: Insights from Historical Demographic Patterns in Philippine Birds

2015

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Phylogeographic studies of Philippine birds support that deep genetic structure occurs across continuous lowland forests within islands, despite the lack of obvious contemporary isolation mechanisms. To examine the pattern and tempo of diversification within Philippine island forests, and test if common mechanisms are responsible for observed differentiation, we focused on three co-distributed lowland bird taxa endemic to Greater Luzon and Greater Negros-Panay: Blue-headed Fantail (Rhipidura cyaniceps), White-browed Shama (Copsychus luzoniensis), and Lemon-throated Leaf-Warbler (Phylloscopus cebuensis). Each species has two described subspecies within Greater Luzon, and a single described subspecies on Greater Negros/Panay. Each of the three focal species showed a common geographic pattern of two monophyletic groups in Greater Luzon sister to a third monophyletic group found in Greater Negros-Panay, suggesting that common or similar biogeographic processes may have produced similar distributions. However, studied species displayed variable levels of mitochondrial DNA differentiation between clades, and genetic differentiation within Luzon was not necessarily concordant with described subspecies boundaries. Population genetic parameters for the three species suggested both rapid population growth from small numbers and geographic expansion across Luzon Island. Estimates of the timing of population expansion further supported that these events occurred asynchronously throughout the Pleistocene in the focal species, demanding particular explanations for differentiation, and support that co-distribution may be secondarily congruent.

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Divergence history of the Rufous-tailed Tailorbird (Orthotomus sericeus) of Sundaland: Implications for the biogeography of Palawan and the taxonomy of island species in general

Cited by 12 publications

References 59 publications

Opening the door to greater phylogeographic inference in Southeast Asia: Comparative genomic study of five codistributed rainforest bird species using target capture and historical DNA

Opening the door to greater phylogeographic inference in Southeast Asia: Comparative genomic study of five codistributed rainforest bird species using target capture and historical DNA

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

Genetic Differentiation in Insular Lowland Rainforests: Insights from Historical Demographic Patterns in Philippine Birds

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