نتایج جستجو برای: wildebeest

تعداد نتایج: 209  

Journal: :PLoS Biology 2008
Joel Berger Julie K Young Kim Murray Berger

Migrations are an important ecological phenomena rapidly declining throughout the world [1]. Within many ungulate populations, migration is a polymorphic trait; animals can cover either long or short distances, pass across broad swaths of land such as those of caribou (Rangifer tarandus) and wildebeest (Connochaetes taurinus), or squeeze through bottlenecks as narrow as 120 meters as described ...

Journal: :Forensic science, medicine, and pathology 2012
Samer Alasaad Rolf K Schuster Francis Gakuya Mohamed Theneyan Michael J Jowers Sandra Maione Annarita Molinar Min Ramón C Soriguer Luca Rossi

The development of non-manipulative molecular tools to determine the origin of parasite infections in the animal trade (if infected before their export or import) is of great interest worldwide for both the animal trade industry and for animal welfare. Molecular tools have a wide range of applications, including forensic identification, wildlife preservation and conservation, veterinary public ...

Journal: :Soft Comput. 2013
Erik Valdemar Cuevas Jiménez Mauricio Gonzalez

Interest in multimodal function optimization is expanding rapidly since real-world optimization problems often demand locating multiple optima within a search space. This article presents a new multimodal optimization algorithm named as the Collective Animal Behavior (CAB). Animal groups, such as schools of fish, flocks of birds, swarms of locusts and herds of wildebeest, exhibit a variety of b...

2014
Erik Cuevas Mauricio González Daniel Zaldivar Marco Pérez-Cisneros

A metaheuristic algorithm for global optimization called the collective animal behavior CAB is introduced. Animal groups, such as schools of fish, flocks of birds, swarms of locusts, and herds of wildebeest, exhibit a variety of behaviors including swarming about a food source, milling around a central locations, or migrating over large distances in aligned groups. These collective behaviors ar...

Journal: :The Onderstepoort journal of veterinary research 2008
J J N Ngeranwa S P Shompole E H Venter A Wambugu J E Crafford B L Penzhorn

The seroprevalence of Anaplasma antibodies in wildlife (eland, blue wildebeest, kongoni, impala, Thomson's gazelle, Grant's gazelle, giraffe and plains zebra) and domestic animal (cattle, sheep and goat) populations was studied in wildlife/livestock interface areas of Kenya. Serum samples were analyzed by competitive inhibition enzyme-linked immunosorbent assay (CI-ELISA), using a recombinant a...

2013
Emanuel Senyael Swai Angolwise Mwakibete Kapaga Francis Sudi Potari Meshack Loomu Gladyness Joshua

An outbreak of malignant catarrhal fever (MCF), a fatal viral disease in indigenous Tanzanian shorthorn zebu in Ngorongoro district of Tanzania during the period of June 2004 has been described. The disease was diagnosed by clinical, post mortem findings and the virus was identified using molecular characterization study. The history and clinical features included pyrexia, cornel opacity, nasal...

2016
Robert G. Evans

Some species are more equal than others. Robert T. Paine (American ecologist, 1933-2016) discovered that if you remove starfish - what he called a "keystone species" - from a tide pool, the complex ecosystem collapses. Without the predator starfish, mussels choke out other animals and plants. This phenomenon is general. Sea otters eat the sea urchins that eat the kelp that provides food and hab...

2011
Tiziana Lembo Katie Hampson Harriet Auty Cari A. Beesley Paul Bessell Craig Packer Jo Halliday Robert Fyumagwa Richard Hoare Eblate Ernest Christine Mentzel Titus Mlengeya Karen Stamey Patricia P. Wilkins Sarah Cleaveland

Bacillus anthracis, the bacterium that causes anthrax, is responsible for varying death rates among animal species. Difficulties in case detection, hazardous or inaccessible carcasses, and misdiagnosis hinder surveillance. Using case reports and a new serologic assay that enables multispecies comparisons, we examined exposure to and illness caused by B. anthracis in different species in the Ser...

Journal: :The Onderstepoort journal of veterinary research 1991
I G Horak L J Fourie P A Novellie E J Williams

Sixteen species of ixodid ticks were collected over varying periods of time from 6 species of ground-frequenting birds and 15 species of small and large mammals in the Mountain Zebra National Park, Karoo, Cape Province. Margaropus winthemi followed by Rhipicephalus glabroscutatum and Rhipicephalus evertsi evertsi were the most abundant species. The host preferences of 14 tick species and the se...

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