Properties of vertebrate predator–prey networks in the high Arctic
Ecology and Evolution, Volume 14, Issue 6, June 2024.Predation is an important ecological process, particularly in arctic environments, which undergo rapid environmental change. Vertebrate trophic networks from a fragmented terrestrial ecosystem on northern Ellesmere Island and north Greenland were less complex, had more specialized interactions, and were more nested and more modular than random ...
Muzit Abrham +7 more
wiley +1 more source
Phase‐dependent red fox expansion into the tundra: implications for management
The Journal of Wildlife Management, Volume 88, Issue 4, May 2024.Climate change causes boreal expansion into tundra ecosystem. We show that expansion of the red fox, a boreal mesopredator, is driven by prey abundance, which has important consequences for red fox control implemented by authorities. Abstract Expansion of boreal species into tundra ecosystems is a consequence of climate change and human exploitation ...
Caitlin Wilkinson +5 more
wiley +1 more source
Molecular diagnosis and characterization of Cryptosporidium spp. in turkeys and chickens in Germany reveals evidence for previously undetected parasite species [PDF]
, 2017 A total of 256 fecal specimens were randomly collected from farmed poultry in Germany and screened for the presence of Cryptosporidium spp. by PCR and further characterized by direct automated DNA sequencing.
Abdelwhab, El-Sayed M. +4 more
core +2 more sources
BirdsParasitic infections represent an important health challenge in falcons (Falconidae), where they may negatively influence survival, reproduction, and performance.
Dajana Davitkov +5 more
doaj +1 more source
Serum protein electrophoresis reference values in the gyrfalcon (Falco rusticolus)
Comparative Clinical Pathology, 2017 Blood samples were collected as part of routine clinical examination procedures from 120 clinically normal gyrfalcons (Falco rusticolus) during a 4-year period between the months of September and February. Serum protein electrophoresis (SPE) was carried out to establish reference values for the species and to characterize species-specific ...
Wernick, Morena Bernadette +4 more
openaire +2 more sources
Diet of the Gyrfalcon (Falco rusticolus ) in Northern Fennoscandia.
Gyrfalcons and Ptarmigan in a Changing World, 2011 —the Gyrfalcon is a circumpolar, arctic and resident raptor in Fennoscandia and is totally dependent on only one or two ptarmigan species, the Willow Ptarmigan (Lagopus lagopus) and rock Ptarmigan (Lagopus muta), for food over half of the year. the diet of the Gyrfalcon has been studied in many parts of its range in earlier decades, but recently only ...
openaire +1 more source
Condition-dependence of pheomelanin-based coloration in nuthatches Sitta europaea suggests a detoxifying function: implications for the evolution of juvenile plumage patterns [PDF]
, 2017 Adult-like juvenile plumage patterns often signal genotypic quality to parents. During adulthood, the same patterns often signal quality to mates.
Galván, Ismael
core +1 more source
Conservation Biology of the Gyrfalcon (Falco rusticolus ) in Northern Fennoscandia.
Gyrfalcons and Ptarmigan in a Changing World, 2011 —Northern Fennoscandia is one of the few areas in the world where there are systematic and comparable data on the population density and breeding of the Gyrfalcon during the last 150 years. I have studied population ecology and conservation biology of the species in Finland and nearby areas on the Swedish and Norwegian side of the border since the ...
openaire +1 more source
The study of Mitochondrial DNA Gene Rearrangement in 4 species of birds(Aves: Falconiformes) [PDF]
, 2016 线粒体控制区由于进化速率快，被作为分子标记广泛应用于种群遗传学和保护生物学等领域的研究。但最近在许多鸟类的线粒体中都发现控制区存在重复拷贝，并且2个控制区拷贝之间的碱基相似度较高。因此在扩增其中一个控制区基因时可能受到另一个控制区的干扰，而对研究结果产生影响。本研究主要针对隼形目鸟类线粒体DNA(mtDNA)基因组中控制区重复及由此产生的基因重排现象进行研究，初步探讨控制区重复和基因重排产生的过程和机制。 本次实验首次对鹰科中的白头鹞(Circusaeruginosus)、日本松雀鹰 ...
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