Jim LeNomenclatoriste
Je suis un mignon petit Traquet rubicole
Surely yes
-
Welcome to BirdForum, the internet's largest birding community with thousands of members from all over the world. The forums are dedicated to wild birds, birding, binoculars and equipment and all that goes with it.
Please register for an account to take part in the discussions in the forum, post your pictures in the gallery and more.
Caprimulgiformes (1 Viewer)
- Thread starter Richard Klim
- Start date
albertonykus
Well-known member
Day, G., G. Fox, H. Hipperson, K.H. Maher, R. Tucker, G.J. Horsburgh, D. Waters, K.L. Durant, T. Burke, J. Slate, and K.E. Arnold (2024)
Revealing the demographic history of the European nightjar (Caprimulgus europaeus)
Ecology and Evolution 14: e70460
doi: 10.1002/ece3.70460
A species' demographic history gives important context to contemporary population genetics and a possible insight into past responses to climate change; with an individual's genome providing a window into the evolutionary history of contemporary populations. Pairwise sequentially Markovian coalescent (PSMC) analysis uses information from a single genome to derive fluctuations in effective population size change over the last ~5 million years. Here, we apply PSMC analysis to two European nightjar (Caprimulgus europaeus) genomes, sampled in Northwest and Southern Europe, with the aim of revealing the demographic history of nightjar in Europe. We successfully reconstructed effective population size over the last 5 million years. Our analysis shows that in response to global climate change, the effective population size of nightjar broadly increased under stable warm periods and decreased during cooler spans and prolonged glacial periods. PSMC analysis on the pseudo-diploid combination of the two genomes revealed fluctuations in gene flow between ancestral populations over time, with gene flow ceasing by the last-glacial period. Our results are tentatively suggestive of divergence in the European nightjar population, with timings consistent with differentiation being driven by restriction to different refugia during periods of glaciation. Finally, our results suggest that migratory behaviour in nightjar likely evolved prior to the last-glacial period, with long-distance migration seemingly persisting throughout the Pleistocene. However, further genetic structure analysis of individuals from known breeding sites across the species' contemporary range is needed to understand the extent and origins of range-wide differentiation in nightjar.
Revealing the demographic history of the European nightjar (Caprimulgus europaeus)
Ecology and Evolution 14: e70460
doi: 10.1002/ece3.70460
A species' demographic history gives important context to contemporary population genetics and a possible insight into past responses to climate change; with an individual's genome providing a window into the evolutionary history of contemporary populations. Pairwise sequentially Markovian coalescent (PSMC) analysis uses information from a single genome to derive fluctuations in effective population size change over the last ~5 million years. Here, we apply PSMC analysis to two European nightjar (Caprimulgus europaeus) genomes, sampled in Northwest and Southern Europe, with the aim of revealing the demographic history of nightjar in Europe. We successfully reconstructed effective population size over the last 5 million years. Our analysis shows that in response to global climate change, the effective population size of nightjar broadly increased under stable warm periods and decreased during cooler spans and prolonged glacial periods. PSMC analysis on the pseudo-diploid combination of the two genomes revealed fluctuations in gene flow between ancestral populations over time, with gene flow ceasing by the last-glacial period. Our results are tentatively suggestive of divergence in the European nightjar population, with timings consistent with differentiation being driven by restriction to different refugia during periods of glaciation. Finally, our results suggest that migratory behaviour in nightjar likely evolved prior to the last-glacial period, with long-distance migration seemingly persisting throughout the Pleistocene. However, further genetic structure analysis of individuals from known breeding sites across the species' contemporary range is needed to understand the extent and origins of range-wide differentiation in nightjar.
Peter Kovalik
Well-known member
A. Recognize the genus Tepuiornis for Setopagis whitelyi PASSED (18 November 2024)
B. Recognize the genus Quechuavis for Systellura decussata PASSED (18 November 2024)
E. Transfer Macropsalis forcipata to Hydropsalis PASSED (18 November 2024)
C. Transfer Hydropsalis maculicaudus to the genus Antiurus DID NOT PASS
D. Transfer Hydropsalis cayennensis to the genus Thermochalcis DID NOT PASS
Jim LeNomenclatoriste
Je suis un mignon petit Traquet rubicole
Thomas J Shannon, Hein Van Grouw, J Martin Collinson (2025). Genetic and morphological analysis shows the Nechisar Nightjar is a hybrid. bioRxiv 2025.04.08.647728
www.biorxiv.org
If solala is deleted, Caprimulgus europaeus unwini could be raised to species rank.
Another remark. If C. nubicus torridus and jonesi are really close to stellatus, torridus will replace stellatus by priority,
Abstract
The Nechisar Nightjar Caprimulgus solala was described only from a single wing collected as roadkill from Nechisar National Park in Ethiopia in 1990. To resolve its taxonomic status a sample was taken from the Nechisar Nightjar holotype and 53 other Afrotropical nightjars, and genomic DNA extracted for sequencing of one mitochondrial and three nuclear genes. The genetic analysis concluded that Nechisar Nightjar is most likely a hybrid, with mitochondrial DNA of Standard-winged Nightjar Caprimulgus longipennis and nuclear alleles from Standard-winged Nightjar and a second nightjar species that has not yet been sequenced. Morphometric and plumage analysis suggests that the paternal parent is Freckled Nightjar Caprimulgus tristigma, for which no nuclear sequence data are currently available.
Genetic and morphological analysis shows the Nechisar Nightjar is a hybrid
The Nechisar Nightjar Caprimulgus solala was described only from a single wing collected as roadkill from Nechisar National Park in Ethiopia in 1990. To resolve its taxonomic status a sample was taken from the Nechisar Nightjar holotype and 53 other Afrotropical nightjars, and genomic DNA...
If solala is deleted, Caprimulgus europaeus unwini could be raised to species rank.
Another remark. If C. nubicus torridus and jonesi are really close to stellatus, torridus will replace stellatus by priority,
Last edited:
jurek
Well-known member
Reading the printed articles, emails, mailing lists, internet fora and social media, an extraordinary effort was collectively made to find this bird. Many ornithologists and birdwatchers over the years spend hundreds of days and nights trying to find the Nechisar Nightjar. However their efforts were mostly not documented and not published, because a failure is not as interesting as a success would be.
It is like expeditions to find the yeti. Many people over the years tried to find the yeti, and multiple times they actually tracked the creature down and seen or shot it. In all cases it turned to be some mundane animal. So nobody was very interested, and soon a new adventurer launched a quest to find the yeti for the first time...
It is like expeditions to find the yeti. Many people over the years tried to find the yeti, and multiple times they actually tracked the creature down and seen or shot it. In all cases it turned to be some mundane animal. So nobody was very interested, and soon a new adventurer launched a quest to find the yeti for the first time...
