Results 1 to 10 of about 8,006 (178)

Limited phylogeographic signal in sex-linked and autosomal loci despite geographically, ecologically, and phenotypically concordant structure of mtDNA variation in the Holarctic avian genus Eremophila. [PDF]

open access: goldPLoS ONE, 2014
Phylogeographic studies of Holarctic birds are challenging because they involve vast geographic scale, complex glacial history, extensive phenotypic variation, and heterogeneous taxonomic treatment across countries, all of which require large sample ...
Sergei V Drovetski   +4 more
doaj   +6 more sources

Mitochondrial Abundance and Function Differ Across Muscle Within Species [PDF]

open access: yesMetabolites
Background: Mitochondria are considered the powerhouse of cells, and skeletal muscle cells are no exception. However, information regarding muscle mitochondria from different species is limited.
Con-Ning Yen   +6 more
doaj   +2 more sources

Sperm mtDNA Copy Number Is Not Associated With Midpiece Size Among Songbirds [PDF]

open access: yesEcology and Evolution
Tremendous variation in sperm morphology is observed across the animal kingdom. Within avian taxa, the songbirds (infraorder Passerides) have the largest variation in sperm morphology.
Laima Bagdonaitė   +4 more
doaj   +2 more sources

Unraveling the host range of Plasmodium huffi: morphological, histopathological and molecular characterization in red-legged seriemas from Brazil [PDF]

open access: yesParasitology
Avian Plasmodium parasites can be pathogenic to their vertebrate hosts. Although cases of anaemia are frequently reported in parasitized birds, the potential damage caused by the parasite during the exoerythrocytic reproduction phase remains poorly ...
Lis Marques de Carvalho e Vieira   +7 more
doaj   +2 more sources

A library of avian proteins improves palaeoproteomic taxonomic identification and reveals widespread intraspecies variability [PDF]

open access: yesNature Communications
Biomineral-associated proteins, such as those found in bone, teeth, and eggshell, have become instrumental for studying ancient life, as they often survive far longer than DNA.
Maria C. Codlin   +3 more
doaj   +2 more sources

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

Avian Haemosporidian Diversity in South Texas: New Lineages and Variation in Prevalence between Sampling Sources and Sites

open access: yesDiversity, 2022
Avian haemosporidian parasites (Haemoproteus, Leucocytozoon, Plasmodium) in Texas are relatively understudied for such a large geographic area with diverse ecoregions.
Katrina D. Keith   +3 more
doaj   +1 more source

Sequencing of the complete mitochondrial genome of the common raven Corvus corax (Aves: Corvidae) confirms mitogenome-wide deep lineages and a paraphyletic relationship with the Chihuahuan raven C. cryptoleucus. [PDF]

open access: yesPLoS ONE, 2017
Previous studies based on single mitochondrial markers have shown that the common raven (Corvus corax) consists of two highly diverged lineages that are hypothesised to have undergone speciation reversal upon secondary contact. Furthermore, common ravens
Arild Johnsen   +3 more
doaj   +1 more source

Low variation in the polymorphic Clock gene poly-Q region despite population genetic structure across barn swallow (Hirundo rustica) populations. [PDF]

open access: yesPLoS ONE, 2011
Recent studies of several species have reported a latitudinal cline in the circadian clock gene, Clock, which influences rhythms in both physiology and behavior. Latitudinal variation in this gene may hence reflect local adaptation to seasonal variation.
Roi Dor   +10 more
doaj   +1 more source

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