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ZEISS DTI thermal imaging cameras. For more discoveries at night, and during the day.

Phylloscopidae (1 Viewer)

Acrocephalus said:
Ng, N. S. R., Prawiradilaga, D. M., Ng, E. Y. X., Suparno, Ashari, H., Trainor, C., Verbelen, P. & Rheindt, F. E. (2018). A striking new species of leaf warbler from the Lesser Sundas as uncovered through morphology and genomics. Scientific Reports 8(1): 15646. doi:10.1038/s41598-018-34101-7

Video about the discovery: https://www.youtube.com/watch?v=8daQU8S5eDs
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Also mentioned and illustrated as Seicercus sp. nov. (Rote Leaf Warbler) in Birds of the Indonesian Archipelago (Eaton et al, 2016)
 
Phylloscopus rotiensis sp. nov. (that I list as Seicercus rotiensis)

Phylloscopus nesophilus/Seicercus nesophilus seems to have been elevated to species rank from P. /S. sarasinorum
 
LeNomenclatoriste said:
What is the true identity of genus Fanissa Brookes, 1830, whose the type species is Fanissa sylvicola?
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The only info we have about Fanissa Brookes 1830 is from the "OD" : https://books.google.be/books?id=j_9dAAAAcAAJ&pg=PA96, and is not much...
But things are indeed reasonably consistent with the "sylvicola" used by Brookes having been the species-group name established by George Montagu in 1798 as Sylvia sylvicola: https://biodiversitylibrary.org/page/753244, for a bird he called "wood wren". (And which, from Montagu's description, was quite clearly a Wood Warbler.)
 
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Nutcracker said:
That surely can't be considered a valid description! In botany it would be a nomen nudum.
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To be valid, with the publication dating from before 1831, all it must meet is this:
12.2.5. in the case of a new genus-group name, the use of one or more available specific names in combination with it, or clearly included under it, or clearly referred to it by bibliographic reference, provided that the specific name or names can be unambiguously assigned to a nominal species-group taxon or taxa;
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It probably doesn't, I agree. (The assignment is not unambiguous.)
(But some genus-group names, which are now in universal use, were introduced in a way that was in fact only marginally better than this. I.e., with no or almost no actual description, and without citing an authority for the included species. E.g., Chlamydotis, Eupodotis and Sypheotides date from [this].)
 
Yep, but there's no reference to the origin of the species name; no hard evidence for saying it is based on Montagu's Sylvia sylvicola, just guesswork. So it definitely fails "provided that the specific name or names can be unambiguously assigned ..." :t:


Those bustard names are at least based on names that are familiar.
 
Phylloscopus maforensis, P. misoriensis

Peter Kovalik said:
Per Alström, Frank E. Rheindt, Ruiying Zhang, Min Zhao, Jing Wang, Xiaojia Zhu, Chyi Yin Gwee, Yan Hao, Jan Ohlson, Chenxi Jia, Dewi M. Prawiradilaga, Per G.P. Ericson, Fumin Lei. Complete species-level phylogeny of the leaf warbler (Aves: Phylloscopidae) radiation. Molecular Phylogenetics and Evolution. In Press, Accepted Manuscript, Available online 6 April 2018§
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IOC Updates Diary Mar 24

Post proposed split of Biak Leaf Warbler on Updates/PS

Post proposed split of Numfor Leaf Warbler on Updates/PS
 
Phylloscopus trochilus yakutensis

Sokolovskis, K., Lundberg, M., Liedvogel, M. et al. Phenotypic and genetic characterization of the East Siberian Willow Warbler (Phylloscopus trochilus yakutensis Ticehurst, 1935) in relation to the European subspecies. J Ornithol (2019). https://doi.org/10.1007/s10336-019-01653-y

Abstract:

Long-distance migrants with transcontinental breeding ranges are of particular interest for the study of local adaptation and geographic differentiation in birds. We compared phenotypes and genotypes between Far East Siberian Willow Warblers Phylloscopus trochilus yakutensis Ticehurst, 1935 with the European subspecies P. t. trochilus Linnaeus, 1758 and P. t. acredula Linnaeus, 1758. We found significant differences in mean body size and plumage colour, but intra-population variation overlapped extensively between the European and Siberian populations. We used stable isotope composition in winter-grown flight feathers as a proxy for wintering sites and found differences between all three subspecies, indicating different wintering grounds. Out of four nuclear loci analyzed (three of which are known to be substantially divergent between the European subspecies), none allowed to seperate East Siberian yakutensis from North Scandinavian acredula. Hence, neither phenotypic traits nor the currently available genetic resources provide diagnostic criteria for confidently assigning individual Willow Warblers to a particular subspecies. Despite extensive overlap in phenotypes and genotypes, we propose that the subspecies names can still be used as biogeographical references to the three Willow Warbler populations that differ in migration strategies. We propose to use yakutensis for Willow Warblers breeding east of the Ural Mountains that presumably initiate autumn migration towards the southwest or west, in contrast to the genetically most similar acredula that start autumn migration towards the southeast or south. Future field studies are needed to elucidate whether the longitudinal variation in phenotype is a cline, or whether a clear contact zone between these subspecies can be identified.
 
Phylloscopus rotiensis

BirdLife's Globally Threatened Bird Forums

The newly described taxon Rote Leaf-warbler (Phylloscopus rotiensis) is to be recognized as a species by BirdLife International.

Posted on May 23, 2019 by Red List Team (BirdLife International)

Rote Leaf-warbler (Phylloscopus rotiensis) has been discovered in 2004 on the Tapuafu Peninsula in the northwest of Rote Island in the Lesser Sundas, Indonesia. Based on genetic and morphological analysis of a specimen taken in 2015, the species was described in 2018 (Ng et al. 2018).

Rote Leaf-warbler is endemic to Rote, where it occurs in the highest strata of intact primary and secondary forests (Ng et al. 2018). Its behaviour and ecological requirements are not well known (Ng et al. 2018).

There is no information on the population trend (Ng et al. 2018). However, forests on Rote are severely fragmented and patchily distributed due to agriculture; it is estimated that only 19% of the island offer suitable habitat for Rote Leaf-warbler (Ng et al. 2018). As the human population grows rapidly, it is expected that the forest will be further depleted for conversion into agricultural land and road developments.
 
Phylloscopus affinis, Phylloscopus occisinensis

Dezhi Zhang, Linfang Tang, Yalin Cheng, Yan Hao, Ying Xiong, Gang Song, Yanhua Qu, Frank E Rheindt, Per Alström, Chenxi Jia, Fumin Lei, ‘Ghost introgression’ as a cause of deep mitochondrial divergence in a bird species complex, Molecular Biology and Evolution, , msz170, https://doi.org/10.1093/molbev/msz170

Abstract


In the absence of nuclear-genomic differentiation between two populations, deep mitochondrial divergence (DMD) is a form of mito-nuclear discordance. Such instances of DMD are rare and might variably be explained by unusual cases of female-linked selection, by male-biased dispersal, by ‘speciation reversal’ or by mitochondrial capture through genetic introgression. Here we analyze DMD in an Asian Phylloscopus leaf warbler (Aves: Phylloscopidae) complex. Bioacoustic, morphological and genomic data demonstrate close similarity between the taxa affinis and occisinensis, even though DMD previously led to their classification as two distinct species. Using population genomic and comparative genomic methods on 45 whole genomes, including historical reconstructions of effective population size, genomic peaks of differentiation and genomic linkage, we infer that the form affinis is likely the product of a westward expansion in which it replaced a now-extinct congener that was the donor of its mtDNA and small portions of its nuclear genome. This study provides strong evidence of ‘ghost introgression’ as the cause of DMD, and we suggest that ‘ghost introgression’ may be a widely overlooked phenomenon in nature.
 
Dezhi Zhang, Linfang Tang, Yalin Cheng, Yan Hao, Ying Xiong, Gang Song, Yanhua Qu, Frank E Rheindt, Per Alström, Chenxi Jia, Fumin Lei, “Ghost Introgression” As a Cause of Deep Mitochondrial Divergence in a Bird Species Complex, Molecular Biology and Evolution, , msz170, https://doi.org/10.1093/molbev/msz170

Abstract:

In the absence of nuclear-genomic differentiation between two populations, deep mitochondrial divergence (DMD) is a form of mito-nuclear discordance. Such instances of DMD are rare and might variably be explained by unusual cases of female-linked selection, by male-biased dispersal, by “speciation reversal” or by mitochondrial capture through genetic introgression. Here, we analyze DMD in an Asian Phylloscopus leaf warbler (Aves: Phylloscopidae) complex. Bioacoustic, morphological, and genomic data demonstrate close similarity between the taxa affinis and occisinensis, even though DMD previously led to their classification as two distinct species. Using population genomic and comparative genomic methods on 45 whole genomes, including historical reconstructions of effective population size, genomic peaks of differentiation and genomic linkage, we infer that the form affinis is likely the product of a westward expansion in which it replaced a now-extinct congener that was the donor of its mtDNA and small portions of its nuclear genome. This study provides strong evidence of “ghost introgression” as the cause of DMD, and we suggest that “ghost introgression” may be a widely overlooked phenomenon in nature.
 
Which authority do you like? The opus likes the second version, probably because at least two of the world authorities are in favor ...

Niels
 
I don't know what I should like. If I would like the second version that would be mean that HBW alive is not correct on the distribution of Phylloscopus maforensis which confined this species to Numfor. HBW Alive assessment based on Pratt & Beehler, 2015.
 
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