Guidelines for assigning species rank<sup>†</sup>

Helbig, Andreas J.; Knox, Alan G.; Parkin, David T.; Sangster, George; Collinson, Martin

doi:10.1046/j.1474-919x.2002.00091.x

Cited by 241 publications

(260 citation statements)

References 17 publications

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“…The debates suffer from use of one word, 'species', to describe different concepts that are then discussed at cross purposes. For an entrée to the large literature on species concepts in birds see Helbig et al (2002), Remsen (2005), Watson (2005), Garnett and Christidis (2007) and de Queiroz (2007, especially fig. 1).…”

Section: Phylogeography's Impact On Taxonomy: a Hint Of Future Debatesmentioning

confidence: 99%

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Phylogeography: its development and impact in Australo-Papuan ornithology with special reference to paraphyly in Australian birds

Joseph

Omland

2009

Emu - Austral Ornithology

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Abstract.With examples from Australo-Papuan ornithology, we examine the technical and theoretical roots of molecular phylogeography and review its development. We describe the progression from ad hoc interpretation of gene trees in single species phylogeographic studies through to comparative phylogeography and currently advocated model-testing approaches. Mitochondrial DNA (mtDNA) sequences have provided most advances to date, although we demonstrate and advocate the future use of multilocus datasets analysed with coalescent methods. We examine interrelationships among speciation research, historical biogeography, phylogeography and landscape genetics. Mitochondrial paraphyly, in which individuals of one species or population have mtDNA that is more closely related to that of another than to their own, emerges in 44% of Australian studies to date as a common, important result in Australian avian phylogeography. Accordingly, we explore at length its most common causes and its impact on case studies in Australo-Papuan avian phylogeography. The impact of so much paraphyly on avian phylogeography and taxonomy is a major theme of the review. We suggest a full research agenda for avian phylogeography in the AustraloPapuan region that spans diverse topics: the need for more studies of pelagic birds, spatio-temporal links between New Guinea and Australia, island populations, testing of long-established biogeographical hypotheses, and integration of molecular and non-molecular datasets into integrated evolutionary understanding of species and populations. Studying the full continuum of divergences from landscape genetics, to phylogeography, to recently diverged species with evidence of paraphyly, to highly divergent species with many fixed differences will lead to a more complete understanding of the processes and patterns of avian evolution.

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Section: Phylogeography's Impact On Taxonomy: a Hint Of Future Debatesmentioning

confidence: 99%

“…There is increasing recognition of the importance of multiple criteria including plumage, morphometrics, song, mtDNA, nDNA, interbreeding, and others, when determining species limits (e.g. de Queiroz 1998de Queiroz , 2007Helbig et al 2002;Sites and Marshall 2004).…”

Section: Paraphyly and Biological Insights: Complexity In The Presentmentioning

confidence: 99%

Phylogeography: its development and impact in Australo-Papuan ornithology with special reference to paraphyly in Australian birds

Joseph

Omland

2009

Emu - Austral Ornithology

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“…Ecological segregation is usually accompanied by appreciable morphological, vocal, genetic and/or behavioural differentiation. If two closely related sympatric taxa were to maintain such differences over long periods of time, this would be taken as extremely strong evidence for separate species status (Helbig et al 2002). While nothing is known of the voice of the Liberian Greenbul, in terms of general morphology, biometrics and plumage coloration it is almost identical to the Icterine Greenbul, except for the distinctive white spots to the greater coverts and remiges of P. leucolepis, which are absent in P. icterinus.…”

Section: Discussionmentioning

confidence: 99%

Taxonomic status of the Liberian Greenbul Phyllastrephus leucolepis and the conservation importance of the Cavalla Forest, Liberia

et al. 2017

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The Liberian Greenbul Phyllastrephus leucolepis is known only from the Cavalla Forest, Liberia, where it was seen between 1981 and 1984 but has not been found since the collection of the type, and only, specimen. It is similar to the common and widespread Icterine Greenbul P. icterinus, from which it differs primarily in having white subterminal spots on the wing coverts and all flight feathers. Its validity as a distinct species has been questioned but left unresolved. This paper describes the first genetic study of the Liberian Greenbul, to attempt to determine whether it is a distinct species, a plumage variant of Icterine Greenbul, or a hybrid. Total genomic DNA was isolated independently by two separate laboratories from the type specimen, as well as from Icterine and Whitethroated Greenbuls P. albigularis sampled close to the type locality in Liberia. Mitochondrial and nuclear DNA was sequenced and compared to that of Icterine and other greenbul species from Liberia and elsewhere. Sequence analysis of three mitochondrial genes and one nuclear gene showed that the Liberian Greenbul is not a hybrid but falls within the range of intraspecific genetic variation observed in the Icterine Greenbul. Reasons for this are discussed, but the most likely explanation is that the Liberian Greenbul represents a plumage variant of the Icterine Greenbul. The alternative possibilities that the Liberian Greenbul represents a distinct species which only recently diverged or has ongoing gene flow with the Icterine Greenbul cannot be formally refuted. Conservation implications for the Cavalla Forest are discussed.

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“…The Biological Species Concept cannot easily be applied to allopatric populations because biological species are defined by reproductive isolation, which cannot be directly observed except for populations that coexist in space and time (cf. Mayr & Ashlock 1991;Helbig et al 2002). Under the Phylogenetic Species Concept, species are population lineages that are diagnosably different (Cracraft 1983); the related General Lineage Concept (de Queiroz 1999;Helbig et al 2002) requires that such lineages, to be considered species, must be expected to retain their integrity in future should populations come back into contact.…”

Section: Taxonomic Treatment and Species Conceptmentioning

confidence: 99%

Taxonomy and conservation of allopatric moth populations: a revisionary study of theNotoreas perornataWalker complex (Lepidoptera: Geometridae: Larentiinae), with special reference to southern New Zealand

Patrick¹,

Hoare

Rhode

2010

New Zealand Journal of Zoology

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Guidelines for assigning species rank^†

Cited by 241 publications

References 17 publications

Phylogeography: its development and impact in Australo-Papuan ornithology with special reference to paraphyly in Australian birds

Phylogeography: its development and impact in Australo-Papuan ornithology with special reference to paraphyly in Australian birds

Taxonomic status of the Liberian Greenbul Phyllastrephus leucolepis and the conservation importance of the Cavalla Forest, Liberia

Taxonomy and conservation of allopatric moth populations: a revisionary study of theNotoreas perornataWalker complex (Lepidoptera: Geometridae: Larentiinae), with special reference to southern New Zealand

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Guidelines for assigning species rank†

Cited by 241 publications

References 17 publications

Phylogeography: its development and impact in Australo-Papuan ornithology with special reference to paraphyly in Australian birds

Phylogeography: its development and impact in Australo-Papuan ornithology with special reference to paraphyly in Australian birds

Taxonomic status of the Liberian Greenbul Phyllastrephus leucolepis and the conservation importance of the Cavalla Forest, Liberia

Taxonomy and conservation of allopatric moth populations: a revisionary study of theNotoreas perornataWalker complex (Lepidoptera: Geometridae: Larentiinae), with special reference to southern New Zealand

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Guidelines for assigning species rank^†