Results 161 to 170 of about 1,744 (197)

Neonatal state and degree of necessity for parental care in Maiasaura based on inferred neonatal metabolic rates. [PDF]

Sci Rep
Bert H, Woodward H, Rinder N, Amiot R, Horner JR, Lécuyer C, Sena M, Cubo J.   +7 more
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Molecular characterisation of an avihepadnavirus isolated from Psittacula krameri (ring-necked parrot)

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, Brigitta, Kurenbach, Klaudia, Chrząstek, Karolina, Bednarek, Simona, Kraberger, Darren P, Martin, Arvind, Varsani   +6 more
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Invasion of Psittacula krameri in Gauteng, South Africa: are other birds impacted?

Biodiversity and Conservation, 2019
Anthropogenic 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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Seasonal Changes in Neuronal Spacing of Hippocampus of Psittacula krameri (Scopoli, 1769)

National Academy Science Letters, 2013
Neural 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 ...
Sippy Singh, U. C. Srivastava
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Acute, fatal Sarcocystis falcatula infection in rose-ringed parakeets (Psittacula krameri)

Veterinary Parasitology: Regional Studies and Reports, 2023
Sarcocystosis is an important avian disease that affects several intermediate host species. Birds not endemic from Americas, like Old World psittacine species, appear to be more susceptible to lethal infection than New World psittacine species. The aim of this study was to investigate the sudden death of rose-ringed parakeets (Psittacula krameri) in an
Ticiana, Zwarg, Tânia Freitas, Raso, Marcelo Pires Nogueira, de Carvalho, Renato Lima, Santos, Daniel Oliveira, Dos Santos, Horwald A B, Llano, Rodrigo Martins, Soares   +6 more
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Presence of the alien Rose-ringed Parakeet Psittacula krameri (Psittacidae) in Mozambique

Ostrich, 2023
The biology of the Rose-ringed Parakeet Psittacula krameri has been widely studied in many of its naturalized habitats around the world.  However, its potential status and impacts may have gone unnoticed in regions with limited monitoring. In this report, we bring attention  to recent sightings of the species in Mozambique and the possibility
Francesca Romana Trezza, Ivan da Costa Nerantzoulis, Silvio Cianciullo, Hugo Mabilana, Célia Macamo, Fabio Attorre, Carlos Manuel Bento, Paolo Ramoni-Perazzi   +7 more
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Pathological studies on chlamydiosis in parakeets (Psittacula krameri manillensis)

Avian Pathology, 1990
Histological, immunohistochemical and ultrastructural findings are described in 20 parakeets (Psittacula krameri ntanillensis) affected with chlamydiosis. The main histological lesions consisted of focal necrosis in the liver and adrenal gland, lymphocytic depletion with fibrin exudation in the splenic sinuses and follicles and fibrinopurulent ...
T, Suwa, A, Touchi, K, Hirai, C, Itakura
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Respiratory Adenovirus-Like Infection in a Rose-Ringed Parakeet (Psittacula krameri)

Avian Diseases, 1991
Intranuclear inclusions were observed under light microscopy in the bronchial epithelial cells of a recently purchased female rose-ringed parakeet that died of chlamydiosis. Transmission electron microscopy revealed the presence of numerous particles of adenovirus morphology.
M, Desmidt, R, Ducatelle, E, Uyttebroek, G, Charlier, J, Hoorens   +4 more
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Fatal Sarcocystis calchasi hepatitis in a captive Indian ringneck parakeet (Psittacula krameri manillensis)

Veterinary Parasitology: Regional Studies and Reports, 2023
An adult Indian ringneck parakeet (Psittacula krameri manillensis) from an outdoor aviary in Sacramento, California was found dead on the nest box. Postmortem examination showed firm, enlarged, yellow‑tinged liver and splenomegaly. Multifocal to coalescing, acute necrosis with macrophages, lymphocytes, plasma cells, and periportal ductular reaction ...
Omar, Gonzales-Viera, David, Arranz-Solís, Jeanne, Smith, Jeroen P J, Saeij, Aslı, Mete   +4 more
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Risk Analysis of Psittacula krameri for South Africa

2021
SANBI (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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