If anybody could send me a copy of this paper, I would be much obliged.
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Dicruridae (1 Viewer)
- Thread starter Peter Kovalik
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If anybody could send me a copy of this paper, I would be much obliged.
Nutcracker
Stop Brexit!
At sci-hub here: https://sci-hub.tw/10.1111/zsc.12274
If you can't download it from there, Private message me your email address, and I'll send it.
I've gone through the Fuchs et al Drongo article and find it to be very dense. In particular I don't see any description of how to distinguish the split Glossy-backed Drongo from the Fork-tailed Drongo in the areas where they overlap in the Horn of Africa and northern Kenya and Uganda. The whole revised taxonomy appears to be based on molecular data. Am I missing something?
Nutcracker
Stop Brexit!
Presumably that's why they call it 'cryptic diversity' - they're different genetically, but can't be distinguished visually. Song / calls, or some other behavioural clues, perhaps?
Jim LeNomenclatoriste
Je suis un mignon petit Traquet rubicole
Sanjaya Weerakkody, Eben Goodale, Vimukthi R. Gunasekara, Yang Liu, Praveen Karanth, Sampath S. Seneviratne (2023). Plumage assisted divergence in a vocally complex island endemic: The Dicrurus paradiseus species complex in Sri Lanka,
Avian Research, 100132. Available online 28 August 2023.
www.sciencedirect.com
Abstract: Models of allopatric speciation within an island biogeographic framework suggest that the division of ancestral mainland populations leads to one or more allopatric island species predominantly through natural and sexual selection or genetic drift. Here we studied phenotypic divergence in a phylogenetic framework in the Dicrurus paradiseus allospecies complex in Sri Lanka, a continental island located in the Indian plate, to understand the complexity of phenotypic divergence on an island. Members of the genus Dicrurus are known as drongos and are conserved in morphology and plumage, but highly variable in vocalization due to vocal learning and mimicry. Two closely related drongos are found in Sri Lanka: the endemic D. lophorinus (or D. paradiseus lophorinus to many authors) found in the wet zone of the island and the widespread continental species D. paradiseus, which inhabits the dry zone. Sampling from all major populations, and voucher specimens from museums across their range in Sri Lanka, we examined phenotypic and genetic variation in this group. The phenotype showed two clusters: birds with a fish-like tail and erect crest (D. lophorinus), and birds with elongated tail streamers with backwardly curved crest (D. paradiseus). There was no significant difference in the vocal traits compared. The genetic variation was examined using two nuclear (Myo 2 and c-mos) and two mitochondrial (ND2 and Cytb) loci and the phylogenetic relationship was analyzed using the Bayesian inference coalescent-based species tree estimation method. The quantitative criteria for species delimitation provided a score sufficient to consider these two taxa as distinct species by considering measurements of body and plumage, acoustics, behaviour and distribution. The phylogeny supports distinct species status for the Sri Lanka Drongo (Dicrurus lophorinus) and that the D. lophorinus and D. paradiseus sister pair diverged since 1.35 mya. The variation in the crest and the tail plumage (components of phenotype) were the main contributors of the divergence, despite the similarity in general appearance and vocalization of the allopatric species.
Avian Research, 100132. Available online 28 August 2023.
Plumage assisted divergence in a vocally complex island endemic: The Dicrurus paradiseus species complex in Sri Lanka
Models of allopatric speciation within an island biogeographic framework suggest that the division of ancestral mainland populations leads to one or m…
Abstract: Models of allopatric speciation within an island biogeographic framework suggest that the division of ancestral mainland populations leads to one or more allopatric island species predominantly through natural and sexual selection or genetic drift. Here we studied phenotypic divergence in a phylogenetic framework in the Dicrurus paradiseus allospecies complex in Sri Lanka, a continental island located in the Indian plate, to understand the complexity of phenotypic divergence on an island. Members of the genus Dicrurus are known as drongos and are conserved in morphology and plumage, but highly variable in vocalization due to vocal learning and mimicry. Two closely related drongos are found in Sri Lanka: the endemic D. lophorinus (or D. paradiseus lophorinus to many authors) found in the wet zone of the island and the widespread continental species D. paradiseus, which inhabits the dry zone. Sampling from all major populations, and voucher specimens from museums across their range in Sri Lanka, we examined phenotypic and genetic variation in this group. The phenotype showed two clusters: birds with a fish-like tail and erect crest (D. lophorinus), and birds with elongated tail streamers with backwardly curved crest (D. paradiseus). There was no significant difference in the vocal traits compared. The genetic variation was examined using two nuclear (Myo 2 and c-mos) and two mitochondrial (ND2 and Cytb) loci and the phylogenetic relationship was analyzed using the Bayesian inference coalescent-based species tree estimation method. The quantitative criteria for species delimitation provided a score sufficient to consider these two taxa as distinct species by considering measurements of body and plumage, acoustics, behaviour and distribution. The phylogeny supports distinct species status for the Sri Lanka Drongo (Dicrurus lophorinus) and that the D. lophorinus and D. paradiseus sister pair diverged since 1.35 mya. The variation in the crest and the tail plumage (components of phenotype) were the main contributors of the divergence, despite the similarity in general appearance and vocalization of the allopatric species.
