Results 121 to 130 of about 365 (157)
Some of the next articles are maybe not open access.
Presence of the alien Rose-ringed Parakeet Psittacula krameri (Psittacidae) in Mozambique
Ostrich, 2023The 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 +7 more
openaire +2 more sources
Acute, fatal Sarcocystis falcatula infection in rose-ringed parakeets (Psittacula krameri)
Veterinary Parasitology: Regional Studies and Reports, 2023Sarcocystosis 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 +6 more
openaire +2 more sources
Pathological studies on chlamydiosis in parakeets (Psittacula krameri manillensis)
Avian Pathology, 1990Histological, 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
openaire +2 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2021SANBI (unpublished) Risk analysis of Psittacula krameri (Scopoli, 1769) for South Africa as per the risk analysis for alien taxa framework v1.0, approved by the South African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.
openaire +1 more source
Respiratory Adenovirus-Like Infection in a Rose-Ringed Parakeet (Psittacula krameri)
Avian Diseases, 1991Intranuclear 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 +4 more
openaire +2 more sources
Status of the rose-ringed parakeet Psittacula krameri in Lisbon, Portugal
Biologia, 2016This research was supported by the COST Action ES1304 (‘ParrotNet’) that provided networking and funds for the visit to Lisbon with a Short Term Scientific Mission of one of the authors.
Luna, Álvaro +3 more
openaire +2 more sources
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
openaire +2 more sources
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
openaire +1 more source
Biological Invasions, 2017
Climate similarity favors biological invasion, but a match between seasonality in the novel range and the timing of life cycle events of the invader also influences the outcome of species introduction. Yet, phenology effects on invasion success have generally been neglected. Here we study whether a phenological mismatch limits the non-native range of a
Luna Alvaro +13 more
openaire +4 more sources
Climate similarity favors biological invasion, but a match between seasonality in the novel range and the timing of life cycle events of the invader also influences the outcome of species introduction. Yet, phenology effects on invasion success have generally been neglected. Here we study whether a phenological mismatch limits the non-native range of a
Luna Alvaro +13 more
openaire +4 more sources
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
openaire +2 more sources