نتایج جستجو برای: sparrows
تعداد نتایج: 1328 فیلتر نتایج به سال:
We have developed eight high-quality microsatellite DNA loci for the saltmarsh sharp-tailed sparrow and one additional locus with evidence of null alleles. In a sample of 250-350 individuals, the average number of alleles per locus was 14.7 and average observed heterozygosity was 0.80. These loci were tested in three additional species of emberizid sparrows, indicating that more than half of th...
Abstract. Narayanappa Y, Gautam A, Mahobiya K, Singh A. 2022. Short Communication: A pilot-study on the occurrence and probable factors influencing population decline of House Sparrow (Passer domesticus) along an urbanization gradient in Coimbatore district, India. Biodiversitas 23: 3884-3889. The sparrow is a widely distributed, human-commensal bird species across globe. Over past few decades,...
BACKGROUND Salmonella enterica Typhimurium (S. Typhimurium) is the most common cause of bovine salmonellosis in Japan and where it is also cause of salmonellosis in wild birds. In 2008, a postpartum cow at a dairy farm developed diarrhea caused by S. Typhimurium. The herd was extensively surveilled for Salmonella sp. and we characterized bacterial isolates from this and other cows to determine ...
Twenty-two of 26 white-throated sparrows, Zonotrichia albicollis, from Algonquin Park, Ontario, Canada, hosted 1 or 2 species of platyhelminths. One species of cestode and 3 of digeneans were collected. Anonchotaenia quiscali inhabited 50% of the sparrows. This is the third report of A. quiscali; Z. albicollis is a new host. Brachylecithum nanum inhabited 43%, Zonorchis alveyi 15%, and Prosthog...
All colonizing individuals have to settle in a novel, conspecific-free environment. The introduction process should be poorly compatible with a good rest. We compared the resting behaviour of radio-tagged house sparrows (Passer domesticus) experimentally translocated into new, conspecific-free areas (introduced individuals, n = 10), with that of translocated sparrows that settled in naturally e...
An improved optimization algorithm, namely, multi-strategy-sparrow search algorithm (MSSSA), is proposed to solve highly non-linear problems. In MSSSA, a circle map utilized improve the quality of population. Moreover, adaptive survival escape strategy (ASES) enhance ability sparrows. producer stage, craziness factor integrated with ASES introduced accuracy and ability. scout facilitates sparro...
The house sparrow (Passer domesticus) is a common and abundant amplifying host of West Nile virus (WNV) and many survive infection and develop humoral immunity. We experimentally inoculated house sparrows with WNV and monitored duration and protection of resulting antibodies. Neutralizing antibody titers remained relatively constant for >or= 36 months (N = 42) and provided sterilizing immunity ...
Small birds in winter face trade-offs between predation risk and foraging, alternate life-history strategies may arise from these trade-offs. Animal personality shows similarities with alternative strategies, using a context to understand can provide valuable insights. Golden-crowned sparrows, Zonotrichia atricapilla, small migratory bird, have complex social system high site-fidelity, long-ter...
The barrier to water loss from the skin of birds and mammals is localized in the stratum corneum (SC), the outer layer of the epidermis. The SC consists of corneocytes, each surrounded by a protein envelope, and a lipid compartment, formed by an extracellular matrix of lipids and by lipids covalently bound to the protein envelope. In mammals, covalently bound lipids in the SC consist of omega-h...
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