| 1. |
- Collinson, Martin, et al.
(författare)
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Species boundaries in the Herring Gull complex
- 2008
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Ingår i: British Birds. - 0007-0335. ; 101, s. 340-363
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Tidskriftsartikel (populärvet., debatt m.m.)abstract
- The BOURC Taxonomic Sub-committee (TSC) recently published recommendations for the taxonomy of the Herring Gull and Lesser Black-backed Gull complex (Sangster et al. 2007). Six species were recognised: Herring Gull Larus argentatus, Lesser Black-backed Gull L. fuscus, Caspian Gull L. cachinnans,Yellow-legged Gull L. michahellis, Armenian Gull L. armenicus and American Herring Gull L. smithsonianus.This paper reviews the evidence underlying these decisions and highlights the remaining areas of uncertainty where taxonomic revision may be required in future.
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| 2. |
- Collinson, Martin, et al.
(författare)
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Species limits within the genus Melanitta, the scoters
- 2006
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Ingår i: British Birds. - 0007-0335. ; 99, s. 183-201
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Tidskriftsartikel (populärvet., debatt m.m.)abstract
- As part of its reassessment of the taxonomy of birds on the British List, the BOURC Taxonomic Sub-committee has assessed all six recognised taxa of scoters Melanitta against its previously published Species Guidelines (Helbig et al. 2002).We consider that, on the basis of evidence currently available, at least five species should be recognised: Common Scoter M. nigra, Black Scoter M. americana,Velvet Scoter M. fusca,White-winged Scoter M. deglandi and Surf Scoter M. perspicillata.The taxonomic status of the Asian subspecies of White-winged Scoter (stejnegeri) is uncertain, owing to insufficient information on several aspects of its morphology and behaviour. Provisionally, we suggest that it is best treated as conspecific with M. deglandi.
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| 3. |
- Helbig, Andreas J., et al.
(författare)
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Guidelines for assigning species rank
- 2002
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Ingår i: Ibis. - 0019-1019 .- 1474-919X. ; 144:3, s. 518-525
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Tidskriftsartikel (refereegranskat)abstract
- Developments in several fields of study (including bio-acoustics and the analysis of DNA) together with reappraisals of the nature of species have impacted significantly on avian taxonomy. The BOU’s Taxonomic Subcommittee has developed guidelines for the applicationof species limits to sympatric, parapatric, allopatric and hybridizing taxa. These are published here to assist researchers understand the rationale behind the committee’s taxonomic recommendations relating to the British List.
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| 4. |
- Irestedt, Martin, et al.
(författare)
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Neumann’s Warbler Hemitesia neumanni (Sylvioidea) : the sole African member of a Palaeotropic Miocene avifauna
- 2011
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Ingår i: Ibis. - 0019-1019 .- 1474-919X. ; 153:1, s. 78-86
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Tidskriftsartikel (refereegranskat)abstract
- We present molecular evidence that Neumann’s Warbler Hemitesia neumanni is deeply nested within the Cettiidae. The species’ distribution in the Albertine Rift of East Africa is intriguing, as the family Cettiidae is principally an Asian radiation. This disjunct distribution could be a result of colonization of Africa by long-distance dispersal, or the Cettiidae may at some point in the past have had a much larger geographical distribution that also covered parts of Africa.
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| 5. |
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| 6. |
- Irestedt, Martin, et al.
(författare)
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The spatio-temporal colonization and diversification across the Indo-Pacific by a 'great speciator' (Aves, Erythropitta erythrogaster).
- 2013
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Ingår i: Proceedings of the Royal Society of London. Biological Sciences. - : The Royal Society. - 0962-8452 .- 1471-2954. ; 280:1759, s. 20130309-
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Tidskriftsartikel (refereegranskat)abstract
- The Indo-Pacific region has arguably been the most important area for the formulation of theories about biogeography and speciation, but modern studies of the tempo, mode and magnitude of diversification across this region are scarce. We study the biogeographic history and characterize levels of diversification in the wide-ranging passerine bird Erythropitta erythrogaster using molecular, phylogeographic and population genetics methods, as well as morphometric and plumage analyses. Our results suggest that E. erythrogaster colonized the Indo-Pacific during the Pleistocene in an eastward direction following a stepping stone pathway, and that sea-level fluctuations during the Pleistocene may have promoted gene flow only locally. A molecular species delimitation test suggests that several allopatric island populations of E. erythrogaster may be regarded as species. Most of these putative new species are further characterized by diagnostic differences in plumage. Our study reconfirms the E. erythrogaster complex as a 'great speciator': it represents a complex of up to 17 allopatrically distributed, reciprocally monophyletic and/or morphologically diagnosable species that originated during the Pleistocene. Our results support the view that observed latitudinal gradients of genetic divergence among avian sister species may have been affected by incomplete knowledge of taxonomic limits in tropical bird species.
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| 7. |
- Jonsson, Knud Andreas, et al.
(författare)
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Complete subspecies-level phylogeny of the Oriolidae (Aves: Passeriformes): Out of Australasia and return
- 2019
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Ingår i: Molecular Phylogenetics and Evolution. - : Elsevier. - 1055-7903 .- 1095-9513. ; 137, s. 200-209
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Tidskriftsartikel (refereegranskat)abstract
- Old World orioles (Oriolidae) are medium-sized passerine birds confined largely to forested areas of Africa, Eurasia and Australasia. We present a new complete molecular (mtDNA) subspecies level phylogeny of the Oriolidae including all 113 taxa (35 species) together with a backbone phylogeny of 19 taxa from the main Oriolus clades based on (i) 21 nuclear genes, (ii) whole mito-genomes, and (iii) genome-wide ultraconserved elements. We use this phylogeny to assess systematic relationships and the biogeographical history of this avian family. Furthermore, we use morphological measurements to investigate the relationship between size and shape axes and upstream or back-colonization of this extensive island region from Asia. We show that several subspecies or groups of subspecies may warrant species rank and we find a continental example of two morphologically distinct species (O. mellianus/O. traillii) being genetically (mtDNA) very similar. Biogeographically, we confirm previous findings that members of the Oriolidae originated in Australo-Papua. Dispersal out of this area took place around 15 Mya to southeast Asia and Africa, and from Africa to the Palearctic followed by recolonization of the Indonesian and Philippine island region during the Plio-Pleistocene. Recolonisation of the Indonesian and Philippine islands coincided with an increase in body size, which may have facilitated the ability to co-exist with other congenerics.
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| 8. |
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| 9. |
- Jønsson, Knud Andreas, et al.
(författare)
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The evolution of mimicry of friarbirds by orioles (Aves : Passeriformes) in Australo-Pacific archipelagos.
- 2016
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Ingår i: Proceedings of the Royal Society of London. Biological Sciences. - : The Royal Society. - 0962-8452 .- 1471-2954. ; 283:1833
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Tidskriftsartikel (refereegranskat)abstract
- Observations by Alfred Wallace and Jared Diamond of plumage similarities between co-occurring orioles (Oriolus) and friarbirds (Philemon) in the Malay archipelago led them to conclude that the former represent visual mimics of the latter. Here, we use molecular phylogenies and plumage reflectance measurements to test several key predictions of the mimicry hypothesis. We show that friarbirds originated before brown orioles, that the two groups did not co-speciate, although there is one plausible instance of co-speciation among species on the neighbouring Moluccan islands of Buru and Seram. Furthermore, we show that greater size disparity between model and mimic and a longer history of co-occurrence have resulted in a stronger plumage similarity (mimicry). This suggests that resemblance between orioles and friarbirds represents mimicry and that colonization of islands by brown orioles has been facilitated by their ability to mimic the aggressive friarbirds.
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| 10. |
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