Results 81 to 90 of about 64,152 (238)
Oikos, EarlyView.Population growth reflects the combined influence of regulation and density‐independent factors operating through demographic processes. Under exceptional circumstances (e.g. populations recovering from near‐extinction), growth may initially be weakly regulated but typically slows as negative density dependence (NDD) sets in.
Bård‐Jørgen Bårdsen +2 more
wiley +1 more source
Viral factors in influenza pandemic risk assessment [PDF]
, 2016 The threat of an influenza A virus pandemic stems from continual virus spillovers from reservoir species, a tiny fraction of which spark sustained transmission in humans.
Barclay, Wendy +18 more
core +4 more sources
Ecologic Immunology of Avian Influenza (H5N1) in Migratory Birds
Emerging Infectious Diseases, 2007 The claim that migratory birds are responsible for the long-distance spread of highly pathogenic avian influenza viruses of subtype H5N1 rests on the assumption that infected wild birds can remain asymptomatic and migrate long distances unhampered.
Thomas P. Weber, Nikolaos I. Stilianakis
openaire +3 more sources
Identification of production challenges and benefits using value chain mapping of egg food systems in Nairobi, Kenya [PDF]
, 2017 Commercial layer and indigenous chicken farming in Nairobi and associated activities in the egg value chains are a source of livelihood for urban families.
Alarcon +32 more
core +2 more sources
Systems Research and Behavioral Science, EarlyView.ABSTRACT Access to forests, farming land and the Citarum river is limited in Tarumajaya; furthermore, many do not own their own housing and are dependent on the public and private landowners in the area. The region of Tarumajaya faces significant challenges in access to crucial resources such as forests, farming land and the Citarum river, leading to a
Rudolf Wirawan +4 more
wiley +1 more source
Veterinary Record, EarlyView.Abstract Background This study describes the development of a data landscape analysis protocol that identifies and characterises animal health data sources to support key regulatory activities throughout the life cycle of veterinary medicines. Methods The protocol included: development of criteria to identify data sources; selection of variables to ...
Ewa Pacholewicz +4 more
wiley +1 more source
Poultry Infection with Influenza Viruses of Wild Bird Origin, China, 2016
Emerging Infectious Diseases, 2018 Migratory birds may play a role in transmission of avian influenza virus. We report the infection of black-tailed gulls and chickens in eastern China with avian influenza (H13N2) and (H13N8) viruses.
Zhijun Yu, Kaihui Cheng, Yuwei Gao
doaj +1 more source
Colorectal cancer screening: From test performance to participant experience [PDF]
, 2013 __Abstract__ Influenza A virus is a member of the Orthomyxoviridae family. The influenza A viruses are classified on the basis of antigenic properties of the glycoproteins hemagglutinin (HA) and neuraminidase (NA) into 17 HA subtypes (H1-H17) and 10 ...
Dam, L. (Leonie) van
core
Investigating poultry trade patterns to guide avian influenza surveillance and control: a case study in Vietnam [PDF]
, 2016 Live bird markets are often the focus of surveillance activities monitoring avian influenza viruses (AIV) circulating in poultry. However, in order to ensure a high sensitivity of virus detection and effectiveness of management actions, poultry ...
A Bouma +24 more
core +1 more source
Nesting ecology of an ice‐associated seabird, Kittlitz's murrelet, at the northern edge of its range
Wildlife Society Bulletin, EarlyView.We studied the Kittlitz's murrelet, an ice‐associated seabird of conservation concern, at the northern edge of its range. Over a 2‐year period, we estimated nest density and success at 2 sites, captured and telemetered nesting murrelets, and tested the use of a thermal camera to improve nest detection.
Michelle L. Kissling +9 more
wiley +1 more source