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Hace 2 horas · Even as the United States grapples with an outbreak of H5N1 flu in dairy cattle, the World Health Organization has announced the first known human infection with a different strain, H5N2, in a ...
Hace 3 horas · Whenever bird flu circulates in poultry, there is a risk that people in close contact with flocks can become infected. Health authorities are closely watching for any signs that the viruses are evolving to spread easily from person to person, and experts are concerned as more mammal species contract bird flu viruses. ___
Hace 1 día · Biodiversity is commonly measured in terms of taxonomic richness of a geographic area over a time interval. In order to calculate biodiversity, species evenness, species richness, and species diversity are to be obtained first. Species evenness [209] is the relative number of individuals of each species in a given area.
Hace 2 horas · Background The climatic changes crossing the world menace the green life through limitation of water availability. The goal of this study was to determine whether Moringa oleifera Lam. trees cultivated under Tunisian arid climate, retain their tolerance ability to tolerate accentuated environmental stress factors such as drought and salinity. For this reason, the seeds of M. oleifera tree ...
Hace 7 horas · A large, brightly colored invasive species called the Joro spider is on the move in the United States. Populations have been growing in parts of the South and East Coast for years, and many ...
Hace 2 horas · Two new Euxoa Hübner, [1821] species, E. scotopamira sp. n. and E. porphyrofusca sp. n. are described. The main external and genitalia features of the new species and of their closest relatives are characterised and discussed.
Hace 2 horas · Two new species, Neomochtherus proshchalykini sp. nov. and Leptogaster nikiforovi sp. nov. are described and illustrated. Currently the fauna of robber flies of the Altai Republic includes 35 species and four subspecies, with Antiphrisson mongolicus Lehr, Antiphrisson niger Lehr, Ktyr callarus callarus Lehr, Ktyr protensis Lehr and Leptogaster bivittata Lehr recorded from Russia for the first ...
