Results 11 to 20 of about 172,554 (150)

Population structure of avian malaria parasites

open access: yesEcology and Evolution, 2019
The geographic distribution of genetic diversity in malaria parasite populations (Apicomplexa: Haemosporida) presumably influences local patterns of virulence and the evolution of host‐resistance, but little is known about population genetic structure in
Meghann B. Humphries   +2 more
doaj   +2 more sources

Genetic Divergence of an Avian Endemic on the Californian Channel Islands. [PDF]

open access: yesPLoS ONE, 2015
The Californian Channel Islands are near-shore islands with high levels of endemism, but extensive habitat loss has contributed to the decline or extinction of several endemic taxa. A key parameter for understanding patterns of endemism and demography in
Amy G Wilson   +3 more
doaj   +2 more sources

Bloodmeal analysis reveals avian Plasmodium infections and broad host preferences of Culicoides (Diptera: Ceratopogonidae) vectors. [PDF]

open access: yesPLoS ONE, 2012
Changing environmental conditions and human encroachment on natural habitats bring human populations closer to novel sources of parasites, which might then develop into new emerging diseases. Diseases transmitted by host generalist vectors are of special
Diego Santiago-Alarcon   +3 more
doaj   +2 more sources

Strong mitochondrial DNA support for a Cretaceous origin of modern avian lineages

open access: yesBMC Biology, 2008
Background Determining an absolute timescale for avian evolutionary history has proven contentious. The two sources of information available, paleontological data and inference from extant molecular genetic sequences (colloquially, 'rocks' and 'clocks'),
Sorenson Michael D   +4 more
doaj   +2 more sources

DNA barcoding of passerine birds in Iran [PDF]

open access: yesZooKeys
Exploring genetic diversity is essential for precise species delimitation, especially within taxonomically complex groups like passerine birds.
Sahar Javaheri Tehrani   +10 more
doaj   +4 more sources

Hybridization and Asymmetrical Introgression Between the Vulnerable Gray-Headed Chickadee and a More Abundant Congener, the Boreal Chickadee: Implications for Conservation. [PDF]

open access: yesEcol Evol
We assess genetic evidence of hybridization between gray‐headed chickadees and boreal chickadees using mitochondrial DNA and nuclear DNA sequencing of individuals from historical and contemporary time periods. We detected two early‐generation hybrids among the historical boreal chickadee samples and none within the contemporary boreal chickadee samples
Armstrong MR   +7 more
europepmc   +2 more sources

Avian Haemosporidian Diversity on Sardinia: A First General Assessment for the Insular Mediterranean

open access: yesDiversity, 2021
The Western Palearctic is one of the most investigated regions for avian haemosporidian parasites (Haemoproteus, Plasmodium and Leucocytozoon), yet geographic gaps in our regional knowledge remain.
I. Pellegrino   +6 more
semanticscholar   +1 more source

A sex chromosome inversion is associated with copy number variation of mitochondrial DNA in zebra finch sperm

open access: yesRoyal Society Open Science, 2021
The propulsion of sperm cells via movement of the flagellum is of vital importance for successful fertilization. While the exact mechanism of energy production for this movement varies between species, in avian species energy is thought to come ...
Ulrich Knief   +3 more
doaj   +1 more source

Lack of Structural Variation but Extensive Length Polymorphisms and Heteroplasmic Length Variations in the Mitochondrial DNA Control Region of Highly Inbred Crested Ibis, Nipponia nippon. [PDF]

open access: yesPLoS ONE, 2013
The animal mitochondrial DNA (mtDNA) length polymorphism and heteroplasmy are accepted to be universal. Here we report the lack of structural variation but the presence of length polymorphism as well as heteroplasmy in mtDNA control region of an ...
Xue-Lian He   +2 more
doaj   +1 more source

Phylogenetic analyses to uncover the evolutionary relationship of a newly sequenced mitochondrial genome from an Eastern spinebill (Acanthorhynchus tenuirostris)

open access: yesMitochondrial DNA. Part B. Resources, 2020
The Eastern spinebill (Acanthorhynchus tenuirostris), a passerine bird in the family Meliphagidae (honeyeaters), a dominant group of birds in Australia and New Guinea. The aim of this study was to sequence the complete mitochondrial genome of the Eastern
Subir Sarker   +3 more
doaj   +1 more source

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