نتایج جستجو برای: bird diseases

تعداد نتایج: 872948  

Journal: :Journal of ornithology 2021

Abstract Infectious diseases bear a great risk for populations of naïve host species. In the present article we inform about first microscopic and molecular detection bird pathogen Trichomonas gallinae in White-winged Snowfinch ( Montifringilla nivalis subsp. ). The emergence trichomonosis this highly specialised alpine species may pose serious threat to its already declining population. Inters...

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Journal: :محیط شناسی 0
محمود رضا همامی دانشگاه صنعتی اصفهان ، دانشکدة منایع طبیعی، استادیار گروه محیط زیست آزاده زائری امیرانی دانشگاه صنعتی اصفهان ، دانشکدة منابع طبیعی، کارشناس ارشد محیط زیست

city parks play an important role in the welfare of metropolitan people. higher species richness of birds can be considered as a reflection of the health of the park and may satisfy visitors to a higher extent being in a more natural environment. we studied the influence of area and shape of city parks on bird species richness and diversity. 13 parks from among the 35 main city parks in isfahan...

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Journal: :Epidemiology and infection 2015
J Cappelle A Caron R Servan De Almeida P Gil M Pedrono J Mundava B Fofana G Balança M Dakouo A B Ould El Mamy C Abolnik O F Maminiaina G S Cumming M-N De Visscher E Albina V Chevalier N Gaidet

Newcastle disease (ND) is one of the most important poultry diseases worldwide and can lead to annual losses of up to 80% of backyard chickens in Africa. All bird species are considered susceptible to ND virus (NDV) infection but little is known about the role that wild birds play in the epidemiology of the virus. We present a long-term monitoring of 9000 wild birds in four African countries. O...

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2015
O. A. Adediran A. J. Jubril E. C. Uwalaka T. A. Jarikre

Cattle egret having been used in the control of flies and other insects on cattle also has been implicated in the transmission of different diseases including parasites. This migratory bird was studied to see the type of parasites it carries and its hematologic status as an indicator of health. The bird was found, caught and brought to the Department of Veterinary Microbiology and Parasitology ...

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Journal: :CoRR 2016
Ying Huang Hong Zheng Haibin Ling Erik Blasch Hao Yang

Bird strikes present a huge risk for aircraft, especially since traditional airport bird surveillance is mainly dependent on inefficient human observation. Computer vision based technology has been proposed to automatically detect birds, determine bird flying trajectories, and predict aircraft takeoff delays. However, the characteristics of bird flight using imagery and the performance of exist...

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2002
Florida Lake Mark V. Hoyer

Hoyer, M. V.,j. Winn and D. E. Canfield,Jr. 2001. Citizenmonitoring ofaquatic bird populations using a Floridalake. Lake and Reserv. Manage. 17(2):82-89. Five years of monthly bird counts on a 2.32 km2 lake in north central Florida were used to examine the ability of a citizen volunteer to monitor aquatic bird populations. When compared to published aquatic bird data, collected by professional ...

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پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده دامپزشکی 1387
نجمه مصلح, علی محمدی, آفاق معطری,

چکیده ندارد.

15 صفحه اول
Journal: :PLoS ONE 2007
Jon E. Brommer Mark Kirkpatrick Anna Qvarnström Lars Gustafsson

BACKGROUND The genetic benefits of mate choice are limited by the degree to which male and female fitness are genetically correlated. If the intersexual correlation for fitness is small or negative, choosing a highly fit mate does not necessarily result in high fitness offspring. METHODOLOGY/PRINCIPAL FINDING Using an animal-model approach on data from a pedigreed population of over 7,000 col...

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Journal: :The Journal of parasitology 2011
Kristin K Herrmann Robert E Sorensen

Populations of North American waterbirds, particularly lesser scaup, have been declining due to habitat disturbance, changing food resources, contaminants, bad water quality, and competition. However, epizootic diseases, including parasitism, may also play an important role in further decline. Trematode-associated mortality of migrating waterbirds, mainly American coot and lesser scaup, has bee...

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Journal: :archives of razi institute 2016
e. khaksar s.m. nassiri m. zamani-ahmadmahmudi a.a. solati

leiomyosarcoma in birds is relatively rare. this tumor as a muscle neoplasm was reported in captive and free ranging birds. smooth muscle cells may develop to the leiomyosracoma, but splenic smooth muscle trabeculae is most common site of the tumor growth. although budgerigars have an incidence of neoplastic diseases but smooth muscle tumors were rarely reported in this species. to the best of ...

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