Results 41 to 50 of about 47,339 (326)

Neotropical Bird Migration During The Ice Ages: Orientation And Ecology [PDF]

open access: yes, 1996
Reconstruction of breeding habitat of North American Neotropical migrants 18,000 years ago and 9,000 years ago indicated major shifts in both location and composition of plant communities relative to present conditions.
Webb, T., III   +1 more
core   +2 more sources

A novel gene organization of the rock sparrow Petronia petronia (Aves: Passeriformes) revealed by complete mitochondrial genome

open access: yesMitochondrial DNA. Part B. Resources, 2017
The whole sequence of the Rock Sparrow (Petronia petronia) mitochondrial genome was determined using La-PCR and conserved primer walking approaches. The entire mitogenome was 17,426 bp in length and harboured 13 protein-coding genes, 2 rRNA genes, 23 ...
Ruirui Shi, Kai Chen, Shaobin Li
doaj   +1 more source

Isolation of microsatellite loci in the Capricorn silvereye, Zosterops lateralis chlorocephalus (Aves : Zosteropidae) [PDF]

open access: yes, 2003
The Capricorn silvereye (Zosterops lateralis chlorocephalus ) is ideally suited to investigating the genetic basis of body size evolution. We have isolated and characterized a set of microsatellite markers for this species.
Altschul   +13 more
core   +2 more sources

Mitochondrial Gene Diversity and Host Specificity of Isospora in Passerine Birds

open access: yesFrontiers in Veterinary Science, 2022
Isospora infections are common in both wild and captive passerine species. Many bird species have been shown to have co-evolved with a particular species of Isospora.
Steven V. Kubiski   +8 more
doaj   +1 more source

Variation in fine-scale genetic structure and local dispersal patterns between peripheral populations of a South American passerine bird [PDF]

open access: yes, 2017
Indexación: Scopus.The distribution of suitable habitat influences natal and breeding dispersal at small spatial scales, resulting in strong microgeographic genetic structure.
Botero-Delgadillo, E.   +9 more
core   +2 more sources

Comparative Analyses of the Digestive Tract Microbiota of New Guinean Passerine Birds

open access: yesFrontiers in Microbiology, 2018
The digestive tract microbiota (DTM) plays a plethora of functions that enable hosts to exploit novel niches. However, our understanding of the DTM of birds, particularly passerines, and the turnover of microbial communities along the digestive tract are
Kasun H. Bodawatta   +3 more
semanticscholar   +1 more source

Avian Malaria Among House Sparrows: a Survey of Disease and Mosquito Vectors (Diptera: Culicidae) in Reed City, Michigan [PDF]

open access: yes, 2017
Nine of 350 house sparrows caught in Reed City, Michigan, had malaria parasites detectable on Giemsa-stained thin films. All of the infected birds were juveniles, Parasitemias were too low to permit identification of the Plasmodium present. Collection of
Freier, Jerome E, Gogolin, Luanne R
core   +3 more sources

The role of UV in crab spider signals: effects on perception by prey and predators [PDF]

open access: yes, 2005
Australian crab spiders Thomisus spectabilis sit on the petals of flowers and ambush prey such as honeybees. White-coloured T. spectabilis reflect in the UV (UV+ spiders) and previous research has shown that their presence, curiously, attracts honeybees ...
Cheng, K   +4 more
core   +1 more source

The relationship of telomere length to baseline corticosterone levels in nestlings of an altricial passerine bird in natural populations. [PDF]

open access: yes, 2016
BackgroundEnvironmental stressors increase the secretion of glucocorticoids that in turn can shorten telomeres via oxidative damage. Modification of telomere length, as a result of adversity faced early in life, can modify an individual's phenotype ...
Guerrero, Claudia Jimena   +4 more
core   +6 more sources

Evidence for passerine bird pollination in Rhododendron species

open access: yesAoB Plants, 2017
It has been hypothesized that flowering plants at high elevation could be pollinated by local passerine birds given that low temperature limits insect activity.
Zhi-Huan Huang   +2 more
semanticscholar   +1 more source

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