Results 121 to 130 of about 364 (157)
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Seasonal Changes in Neuronal Spacing of Hippocampus of Psittacula krameri (Scopoli, 1769)
The National Academy of Sciences, India, 2013Neural plasticity in avian hippocampus is accompanied by seasonal changes. The previous studies have reported that the fluctuation in season results in changes in thickness of dendrite, spine turnover and morphology of spine in hippocampus of birds whereas the present investigation indicates that neuronal spacing in hippocampus of birds is also ...
U C Srivastava, Srivastava U C
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Archives of Virology, 2011
Avihepadnaviruses have been documented previously in ducks, herons, geese, storks and cranes. Here, we describe the full genome of a new avihepadnavirus isolated from Psittacula krameri (ring-necked parrot) in Poland. The parrot hepatitis B virus (PHBV) genome (3042 bp) shares
Tomasz Piasecki +2 more
exaly +3 more sources
Avihepadnaviruses have been documented previously in ducks, herons, geese, storks and cranes. Here, we describe the full genome of a new avihepadnavirus isolated from Psittacula krameri (ring-necked parrot) in Poland. The parrot hepatitis B virus (PHBV) genome (3042 bp) shares
Tomasz Piasecki +2 more
exaly +3 more sources
Risk Analysis of Psittacula krameri for South Africa
2021SANBI (unpublished) Risk analysis of Psittacula krameri (Scopoli, 1769) for South Africa as per the risk analysis for alien taxa framework v1.0, approved by the South African Alien Species Risk Analysis Review Panel in March 2018 with an Ddendum providing update November 2019, pp 19, http://dx.doi.org/10.5281/zenodo.5026977.
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Primary structure of the hemolglobin β-chain of Rose-ringed Parakeet (Psittacula krameri)
Journal of Protein Chemistry, 1989The primary structure of Rose-ringed Parakeet hemoglobin beta-chain was established, completing the analysis of this hemoglobin. Comparison with other avian beta-chains show variations smaller than those for the corresponding alpha-chains. There are 11 amino acid exchanges in relationship to the only other characterized psittaciform beta-chain, and a ...
A, Islam +3 more
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Invasion of Psittacula krameri in Gauteng, South Africa: are other birds impacted?
Biodiversity and Conservation, 2019Anthropogenic activities have resulted in the dispersal of many species beyond their natural range and there is ongoing concern over their impacts on native ecosystems. However, these interactions are hard to disentangle from the effect of human-driven habitat alterations.
Ielyzaveta M Ivanova, Craig T Symes
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Islets of Langerhans in the parakeet, Psittacula krameri.
Anatomischer Anzeiger, 1980The pancreatic gland of Psittacula krameri is divisible into 4 lobes i.e. dorsal, ventral, third and splenic. The endocrine part is composed of alpha 1-, alpha 2- and beta-cells. The islets are of 4 kinds viz., alpha islets (having alpha 1- and alpha 2-cells), beta islets (having beta- and alpha 1-cells), pure beta islets (consisting of beta-cells ...
Y K, Gupta, S, Kumar
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Primary structure of the hemoglobin α-chain of rose-ringed parakeet (Psittacula krameri)
Journal of Protein Chemistry, 1988The structure of the hemoglobin alpha-chain of Rose-ringed Parakeet was determined by sequence degradations of the intact subunit, the CNBr fragments, and peptides obtained by digestion with staphylococcal Glu-specific protease and trypsin. Using this analysis, the complete alpha-chain structure of 21 avian species is known, permitting comparisons of ...
A, Islam +4 more
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Seasonal effects on the thermoregulation of invasive rose-ringed parakeets (Psittacula krameri)
Journal of Thermal Biology, 2013Abstract Invasive species are a major threat to global biodiversity. Rose-ringed parakeets Psittacula krameri are widely established outside their native range and are successful invaders in many countries, including South Africa. Physiological and behavioral responses to environmental conditions are considered to be major factors that influence ...
Vuyisile Thabethe +4 more
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STUDIES ON THE PHYSIOLOGY OF DIGESTION IN PSITTACULA KRAMERI (SCOP.)
1981The physiological studies include the pH determination and qualitative estimation of enzymes in different parts of the gut of Psittacula kraineri.
Mohan, K, Magon, Vejay K
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Foot preferences in wild-living ring-necked parakeets (Psittacula krameri, Psittacidae)
Laterality: Asymmetries of Body, Brain and Cognition, 2011Evidence for foot preferences has been reported in parrots and the majority of parrot species uses the left foot to hold and process food objects. Here we assessed the footedness of ring-necked parakeets (Psittacula krameri) in a wild-living non-native population in Heidelberg, Baden-Wurttemberg, Germany.
Christoph, Randler +2 more
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