| argas (argas) monachus, new species (ixodoidea: argasidae), from nests of the monk parakeet, myiopsitta monachus, in argentina. | | 1973 | 4760629 |
| vocal-tract filtering by lingual articulation in a parrot. | human speech and bird vocalization are complex communicative behaviors with notable similarities in development and underlying mechanisms. however, there is an important difference between humans and birds in the way vocal complexity is generally produced. human speech originates from independent modulatory actions of a sound source, e.g., the vibrating vocal folds, and an acoustic filter, formed by the resonances of the vocal tract (formants). modulation in bird vocalization, in contrast, is th ... | 2004 | 15341748 |
| feather-picking psittacines: histopathology and species trends. | histologic findings are described for 408 feather-picking or self-mutilating psittacines with the use of biopsies from clinically affected and unaffected skin. inflammatory skin disease was diagnosed in 210 birds, and traumatic skin disease was diagnosed in 198 birds. criteria used for the diagnosis of inflammatory skin disease included the presence of perivascular inflammation in the superficial or deep dermis of clinically affected and unaffected sites. the primary histologic criteria for the ... | 2008 | 18487502 |
| spermatozoa characteristics in six psittacine species using light microscopy. | even though breeding of companion birds has increased continuously for years, the fecundity assessment of birds has hardly been acknowledged. knowledge of the structure of spermatozoa is crucial for evaluation of the basic reproductive biology of any species as well as for phylogenetic research and cladistic analyses of internal relationships. spermatozoa of six different psittacine species (nymphicus hollandicus, myiopsitta monachus, agapornis roseicollis, melopsittacus undulatus, tanygnathus l ... | 2009 | 20456089 |
| genetic evidence for high propagule pressure and long-distance dispersal in monk parakeet (myiopsitta monachus) invasive populations. | the monk parakeet (myiopsitta monachus) is a successful invasive species that does not exhibit life history traits typically associated with colonizing species (e.g., high reproductive rate or long-distance dispersal capacity). to investigate this apparent paradox, we examined individual and population genetic patterns of microsatellite loci at one native and two invasive sites. more specifically, we aimed at evaluating the role of propagule pressure, sexual monogamy and long-distance dispersal ... | 2010 | 20666997 |
| vocal tract articulation revisited: the case of the monk parakeet. | birdsong and human speech share many features with respect to vocal learning and development. however, the vocal production mechanisms have long been considered to be distinct. the vocal organ of songbirds is more complex than the human larynx, leading to the hypothesis that vocal variation in birdsong originates mainly at the sound source, while in humans it is primarily due to vocal tract filtering. however, several recent studies have indicated the importance of vocal tract articulators such ... | 2012 | 22162856 |
| chromosomal mapping of repetitive dnas in myiopsitta monachus and amazona aestiva (psittaciformes, psittacidae) with emphasis on the sex chromosomes. | here, for the first time, we describe the karyotype of myiopsitta monachus (psittacidae, arini). we found 2n = 48, corresponding to the lowest diploid number observed in neotropical psittaciformes so far, with an uncommonly large w chromosome homomorphic to the z. in order to better understand the evolution of the sex chromosomes in this species, we applied several molecular cytogenetic approaches, including c-banding, fish mapping of repetitive dnas (several microsatellite repeats), and whole-c ... | 2017 | 28359066 |
| insects found in birds' nests from argentina. pseudoseisura lophotes reichenbach, 1853 and anumbius annumbi (vieillot, 1817) (aves: furnariidae), hosts of triatoma platensis neiva, 1913 (hemiptera: reduviidae: triatominae). | the insect fauna of the nests of pseudoseisura lophotes (reichenbach, 1853) (aves: furnariidae) from argentina was investigated. a total of 110 species (68 identified to species, 22 identified to genus, 20 identified to family) in 40 families of 10 orders of insects was found in these nests. triatoma platensis neiva, 1913 (hemiptera: reduviidae) was found again in nests of p. lophotes, corroborating after 73 years the first observations made by mazza in 1936. the occurrence of the insects in nes ... | 2014 | 24871037 |
| computed tomographic anatomy of the heads of blue-and-gold macaws (ara ararauna), african grey parrots (psittacus erithacus), and monk parakeets (myiopsitta monachus). | objective to create an atlas of the normal ct anatomy of the head of blue-and-gold macaws (ara ararauna), african grey parrots (psittacus erithacus), and monk parakeets (myiopsitta monachus). animals 3 blue-and-gold macaws, 5 african grey parrots, and 6 monk parakeets and cadavers of 4 adult blue-and-gold macaws, 4 adult african grey parrots, and 7 monk parakeets. procedures contrast-enhanced ct imaging of the head of the live birds was performed with a 4-multidetector-row ct scanner. cadaveric ... | 2016 | 27901394 |
| normal computed tomographic features and reference values for the coelomic cavity in pet parrots. | the increasing popularity gained by pet birds over recent decades has highlighted the role of avian medicine and surgery in the global veterinary scenario; such a need for speciality avian medical practice reflects the rising expectation for high-standard diagnostic imaging procedures. the aim of this study is to provide an atlas of matched anatomical cross-sections and contrast-enhanced ct images of the coelomic cavity in three highly diffused psittacine species. | 2016 | 27596377 |
| distribution and 16s rdna sequences of argas monachus (acari: argasidae), a soft tick parasite of myiopsitta monachus (aves: psittacidae). | specimens of argas monachus keirans et al. were collected from myiopsitta monachus nests in 42 localities in argentina and paraguay from 2006 to 2010. a list of localities where this tick has been found is presented. 16s rdna sequences of specimens of a. monachus from different localities were compared to confirm whether they belong to the same specific taxon. argas monachus is present in the phytogeographic provinces of chaco, espinal, and monte, but not in the pampa (all from de chaco domain) ... | 2011 | 21739257 |
| development of the superaltricial monk parakeet (aves, psittaciformes): embryo staging, growth, and heterochronies. | knowledge about the embryonic stages of birds is important in answering many questions about development and evolution. we give the first description of 41 embryological stages of the monk parakeet (myiopsitta monachus) on the basis of external morphology and comparison with the chicken. we also provide measurements of some external morphological characters (i.e. body mass, crown-rump, beak, forelimb, and third toe lengths) and perform comparisons with other precocial and altricial birds with th ... | 2015 | 26267228 |
| parasitic survey on introduced monk parakeets (myiopsitta monachus) in santiago, chile. | central chile has been identified as a unique ecosystem with high conservation priority because of its high levels of endemism and intensive anthropic pressure. over a period of almost four decades, the monk parakeet has been successful in establishing and dispersing in urban santiago, although little is known about its potential impact. furthermore, nothing is known about its epidemiological risks towards animals or even humans. for this reason, we conducted the first parasitic survey of monk p ... | 2017 | 28746442 |
| perineuronal satellite neuroglia in the telencephalon of new caledonian crows and other passeriformes: evidence of satellite glial cells in the central nervous system of healthy birds? | glia have been implicated in a variety of functions in the central nervous system, including the control of the neuronal extracellular space, synaptic plasticity and transmission, development and adult neurogenesis. perineuronal glia forming groups around neurons are associated with both normal and pathological nervous tissue. recent studies have linked reduction in the number of perineuronal oligodendrocytes in the prefrontal cortex with human schizophrenia and other psychiatric disorders. ther ... | 2013 | 23904989 |
| are anti-ganglioside antibodies associated with proventricular dilatation disease in birds? | the identification of parrot bornaviruses (pabv) in psittacine birds with proventricular dilatation disease (pdd) has not been sufficient to explain the pathogenesis of this fatal disease, since not all infected birds develop clinical signs. although the most accepted theory indicates that pabv directly triggers an inflammatory response in this disease, another hypothesis suggests the disease is triggered by autoantibodies targeting neuronal gangliosides, and pdd might therefore resemble guillai ... | 2017 | 28413724 |
| skeletogenesis of myiopsitta monachus (psittaciformes) and sequence heterochronies in aves. | the ossification sequence of myiopsitta monachus was determined. myiopsitta has a similar sequence to other altricial birds, with delayed skeletons compared to precocial species. the hindlimbs ossify before the forelimbs, a condition that could be linked to altriciality. to determine the stability of the sequences of ossification across birds, we selected species of different groups of aves and used event-pairing method and character mapping on a phylogeny. our results show that the homogeneity ... | 2017 | 27869350 |
| jaw myogenesis in the monk parakeet: evidence of developmental reprogramming in the emergence of novel muscles in psittaciformes (aves). | psittaciformes have apomorphies in the muscles of the jaw that include both the adductors m. ethmomandibularis (em) and m. pseudomasseter (pm), which are responsible for the generation of strong bite forces. while the em is present in all psittaciformes, the pm can be absent or present, and even underdeveloped or well-developed. the aim of this study is to identify developmental reprogramming processes by comparing the myogenesis of the jaw of the monk parakeet myiopsitta monachus with the infor ... | 2016 | 27480781 |
| unrelenting spread of the alien monk parakeet myiopsitta monachus in israel. is it time to sound the alarm? | monk parakeets, myiopsitta monachus boddaert, are native to south america but have established populations in north america, europe, africa and asia. they are claimed to act as agricultural pests in their native range, and their communal stick nests may damage human infrastructure. although several monk parakeet populations are present in the mediterranean basin and temperate europe, little empirical data are available on their population size and growth, distribution and potential impact. we in ... | 2017 | 27368082 |
| social feedback and the emergence of rank in animal society. | dominance hierarchies are group-level properties that emerge from the aggression of individuals. although individuals can gain critical benefits from their position in a hierarchy, we do not understand how real-world hierarchies form. nor do we understand what signals and decision-rules individuals use to construct and maintain hierarchies in the absence of simple cues such as size or spatial location. a study of conflict in two groups of captive monk parakeets (myiopsitta monachus) found that a ... | 2015 | 26355292 |
| jaw myology and bite force of the monk parakeet (aves, psittaciformes). | psittaciform birds exhibit novelties in jaw bone structure and musculature that are associated with strong bite forces. these features include an ossified arcus suborbitalis and the muscles ethmomandibularis and pseudomasseter. we analyse the jaw musculature of the monk parakeet (myiopsitta monachus) to enable future studies aimed at understanding craniofacial development, morphology, function and evolution. we estimate bite force based on muscle dissections, physiological cross-sectional area a ... | 2015 | 26053435 |
| macroparasites of introduced parakeets in italy: a possible role for parasite-mediated competition. | alien species are considered a cause of biodiversity loss throughout the world. an important but often overlooked form of competition with native species is the parasite-mediated one. introduced species may bring their own parasites from their native ranges (spillover) or get native parasites from native species, thus increasing the parasites' spread and transmission risk (spillback). thus, a complete knowledge of parasites hosted by introduced species is important to assess and to possibly prev ... | 2015 | 26025315 |
| shared genetic diversity across the global invasive range of the monk parakeet suggests a common restricted geographic origin and the possibility of convergent selection. | while genetic diversity is hypothesized to be an important factor explaining invasion success, there is no consensus yet on how variation in source populations or demographic processes affects invasiveness. we used mitochondrial dna haplotypic and microsatellite genotypic data to investigate levels of genetic variation and reconstruct the history of replicate invasions on three continents in a globally invasive bird, the monk parakeet (myiopsitta monachus). we evaluated whether genetic diversity ... | 2015 | 25873354 |
| association of plasma lipid levels with atherosclerosis prevalence in psittaciformes. | the prevalence of atherosclerosis is high in the captive psittacine population and increases with age and female sex. the genera psittacus, amazona, and nymphicus are predisposed to atherosclerosis, whereas the genera cacatua and ara are less susceptible. plasma cholesterol and lipoprotein abnormalities have been suggested as risk factors in the development of atherosclerosis as observed in mammals. to investigate whether the psittacine genera susceptibility to atherosclerosis and the known risk ... | 2014 | 25843322 |
| air sac adenocarcinoma of the sternum in a quaker parrot (myiopsitta monachus). | respiratory neoplasia is rarely reported in avian species. a 17-yr-old quaker parrot (myiopsitta monachus) was admitted with a 2-wk history of anorexia, depression, and respiratory distress. clinical examination revealed a large, firm mass in the left pectoral muscle. radiology showed a mass silhouetting the heart and the liver. supportive treatment was provided, but the bird died during the seventh weekly visit to drain thoracic cavity fluid. necropsy showed a white, 3 x 3 x 2-cm, hard, gritty ... | 2014 | 25632693 |
| nest-building behavior of monk parakeets and insights into potential mechanisms for reducing damage to utility poles. | the monk parakeet (myiopsitta monachus) commonly uses utility poles as a substrate for building large, bulky nests. these nests often cause fires and electric power outages, creating public safety risks and increasing liability and maintenance costs for electric companies. previous research has focused on lethal methods and chemical contraception to prevent nesting on utility poles and electrical substations. however, implementation of lethal methods has led to public protests and lawsuits, whil ... | 2014 | 25289186 |
| comparison of two analyzers to determine selected venous blood analytes of quaker parrots (myiopsitta monachus). | point of care devices can assess electrolyte, blood gas, biochemical, and hematologic values in a critical care setting. although these devices are commonly used in humans and companion mammals, few studies have assessed their use in avian species. this study compares electrolyte, hemoglobin (hgb), hematocrit (hct), acid-base, and venous blood gas parameters between the i-stat and irma trupoint blood gas analysis systems for 35 quaker parrots. agreement between the two analyzers and the effect o ... | 2014 | 25000685 |
| hindlimb myology of the monk parakeet (aves, psittaciformes). | we studied the hindlimb myology of the monk parakeet (myiopsitta monachus). like all parrots, it has zygodactyl feet enabling perching, climbing, hanging, moving easily among trees, and handling food. muscles were described and weighed, and physiological cross-sectional area (pcsa) of four flexors and one extensor was calculated. in comparison to other muscles, the m. tibialis cranialis and the m. fibularis brevis show increased development and high pcsa values, and therefore, large potential fo ... | 2014 | 24500894 |
| lipid metabolic dose response to dietary alpha-linolenic acid in monk parrot (myiopsitta monachus). | monk parrots (myiopsitta monachus) are susceptible to atherosclerosis, a progressive disease characterized by the formation of plaques in the arteries accompanied by underlying chronic inflammation. the family of n-3 fatty acids, especially eicosapentaenoic acid (20:5n-3, epa) and docosahexaenoic acid (22:6n-3, dha), have consistently been shown to reduce atherosclerotic risk factors in humans and other mammals. some avian species have been observed to convert α-linolenic acid (18:3n-3, ala) to ... | 2014 | 24293226 |
| genetic evidence of extra-pair paternity and intraspecific brood parasitism in the monk parakeet. | the monk parakeet (myiopsitta monachus) is a widespread invasive species native to southern south america that has become established in many regions of the world. monk parakeets breed in a large, fully enclosed structure built from twigs, which consist of one to many individual brooding chambers. the species has been considered to be socially and genetically monogamous. however, genetic relatedness of adults to juveniles in the native area was found to be lower than expected for monogamy. to as ... | 2013 | 24209709 |
| experimental diet-induced atherosclerosis in quaker parrots (myiopsitta monachus). | spontaneous atherosclerosis is common in psittaciformes, and clinical signs associated with flow-limiting stenosis are encountered in pet birds. nevertheless, a psittacine model of atherosclerosis has not been developed for research investigations. sixteen captive-bred quaker parrots (myiopsitta monachus) were used in this study. while 4 control birds were fed a maintenance diet, 12 other birds were fed an atherogenic diet composed of 1% cholesterol controlling for a calorie-to-protein ratio for ... | 2013 | 23696447 |
| conversion of α-linolenic acid to long-chain omega-3 fatty acid derivatives and alterations of hdl density subfractions and plasma lipids with dietary polyunsaturated fatty acids in monk parrots (myiopsitta monachus). | the effect of α-linolenic acid from a flaxseed (flx)-enriched diet on plasma lipid and fatty acid metabolism and possible atherosclerosis risk factors was studied in monk parrots (myiopsitta monachus). twenty-four monk parrots were randomly assigned to diets containing either 10% ground suns or 10% ground flxs. feed intake was calculated daily. blood samples, body condition scores and body weights were obtained at -5 weeks, day 0, 7, 14, 28, 42 and 70. plasma samples were analysed for total chol ... | 2014 | 23600588 |
| genetic evidence links invasive monk parakeet populations in the united states to the international pet trade. | severe ecological and economic impacts caused by some invasive species make it imperative to understand the attributes that permit them to spread. a notorious crop pest across its native range in south america, the monk parakeet (myiopsitta monachus) has become established on four other continents, including growing populations in the united states. as a critical first step to studying mechanisms of invasion success in this species, here we elucidated the geographical and taxonomic history of th ... | 2008 | 18652686 |
| [triatoma delpontei romaña & abalos, 1947 (hemiptera, tratominae) in the brazilian state of rio grande do sul]. | triatoma delpontei (romaña & abalos, 1947) (hemiptera, triatominae) is an ornithophilic sylvatic with a particular association to the psittacid myiopsitta monachus (boaddert, 1783). it is found in the continental biogeographical province of the chaco, where it inhabits the nests or m. monachus, in subtropical xerophytic forests. the authors report the first finding of t. delpontei in brasil, in the "campanha" region of the state or rio grande do sul (barra do quarai, uruguaiana), on the right ba ... | 2006 | 8278745 |
| acyclovir (zovirax) pharmacokinetics in quaker parakeets, myiopsitta monachus. | the pharmacokinetics of intravenous (i.v.) and intramuscular (i.m.) single-dose administration of acyclovir were determined in quaker parakeets. after i.v. injection at a dose of 20 mg/kg of acyclovir, elimination half-life was estimated at 0.65 h, volume of distribution at steady state was 627.65 ml/kg, and clearance was 11.22 ml/kg/min. the estimated pharmacokinetic values after i.m. injection at a dose of 40 mg/kg of acyclovir were an elimination half-life of 0.71 h and a bioavailability of 9 ... | 1992 | 1433488 |
| [the intraepithelial mucous glands in the oral cavity of myiopsitta monacha (the parrot or common parakeet)]. | | 1992 | 1344184 |
| seasonal acclimatization to temperature in monk parakeets. | metabolism and insulation of monk parakeets were determined in summer and compared with previously reported winter values. fasting levels of metabolism were the same in winter and summer during the daytime: nighttime values were significantly lower in winter (6.11 versus 8.20 wkg(-1)). evaporative water loss at 20-30° c was significantly lower in winter (2.24 versus 3.05 mg h2o g(-1) h(-1)). winter birds were better able to maintain body temperature (tb) independent of ambient temperature (ta) b ... | 1978 | 28309731 |
| temperature regulation and water requirements of the monk parakeet, myiopsitta monachus. | monk parakeets have been introduced into north america within the past 15 years and are apparently becoming established in several geographical regions. several physiological responses of monk parakeets related to climatic tolerance were examined, and it is concluded that the species is equipped physiologically to occupy most climatic situations with the exception of arctic and subarctic regions and waterless deserts. the standard metabolic rate, determined during the winter, was 44% lower at ni ... | 1975 | 28308920 |
| an aberrant form of leucocytozoon infection in two quaker parakeets (myiopsitta monachus boddaert, 1783). | | 1972 | 4629455 |
| a protective nesting association with native species counteracts biotic resistance for the spread of an invasive parakeet from urban into rural habitats. | non-native species are often introduced in cities, where they take advantage of microclimatic conditions, resources provided by humans, and competitor/predator release to establish and proliferate. however, native communities in the surrounding rural or natural areas usually halt their spread through biotic resistance, mainly via top-down regulative processes (predation pressure). here, we show an unusual commensal interaction between exotic and native bird species that favours the spread of the ... | 2020 | 32411270 |
| ectoparasite sharing among native and invasive birds in a metropolitan area. | parasite-mediated competition has been reported to be one of the most harmful, although overlooked, impacts that alien species have on native ecosystems. monk parakeets myiopsitta monachus are successful invaders in europe, where they have been introduced from south america. colonial nests of these parrots may also host other species, e.g. the rock pigeon columba livia forma domestica. in this work, we analysed the ectoparasite composition of monk parakeets in barcelona (spain) and we evaluated ... | 2019 | 30565194 |
| chromosomal evolution in the phylogenetic context: a remarkable karyotype reorganization in neotropical parrot myiopsitta monachus (psittacidae). | myiopsitta monachus is a small neotropical parrot (psittaciformes: arini tribe) from subtropical and temperate regions of south america. it has a diploid chromosome number 2n = 48, different from other members of the arini tribe that have usually 70 chromosomes. the species has the lowest 2n within the arini tribe. in this study, we combined comparative chromosome painting with probes generated from chromosomes of gallus gallus and leucopternis albicollis, and fish with bacterial artificial chro ... | 2020 | 32754200 |
| comparison of four anti-avian igy secondary antibodies used in western blot and dot-blot elisa to detect avian bornavirus antibodies in four different bird species. | this study evaluated the specificity of different avian secondary antibodies used in western blot and dot-blot elisa to detect avian bornavirus antibodies in bird plasma. | 2019 | 31815098 |
| microsatellite characterisation and sex-typing in two invasive parakeet species, the monk parakeet myiopsitta monachus and ring-necked parakeet psittacula krameri. | invasive species can have wide-ranging negative impacts, and an understanding of the process and success of invasions can be vital to determine management strategies, mitigate impacts and predict range expansions of such species. monk parakeets (myiopsitta monachus) and ring-necked parakeets (psittacula krameri) are both widespread invasive species, but there has been little research into the genetic and social structure of these two species despite the potential links with invasion success. the ... | 2020 | 31828561 |
| environmental drivers of parasite load and species richness in introduced parakeets in an urban landscape. | introduced species represent a threat to native wildlife worldwide, due to predation, competition, and disease transmission. concurrent introduction of parasites may also add a new dimension of competition, i.e. parasite-mediated competition, through spillover and spillback dynamics. urban areas are major hotspots of introduced species, but little is known about the effects of urban habitat structure on the parasite load and diversity of introduced species. here, we investigated such environment ... | 2018 | 30167793 |
| from the cage to the wild: introductions of psittaciformes to puerto rico. | introduced psittacine birds can become highly invasive. in this study, we assessed invasions of psittaciformes in puerto rico. we reviewed the literature, public databases, citizen science records, and performed in situ population surveys across the island to determine the historical and current status and distribution of psittacine species. we used count data from ebird to determine population trends. for species whose populations were increasing, we modelled their potential distribution using ... | 2018 | 30397538 |
| the seasonal role of field characteristics on seed-eating bird abundances in agricultural landscapes. | in temperate agroecosystems, avian responses in abundance and distribution to landscape attributes may be exacerbated by the coupling of natural seasons and farming practices. we assessed the seasonal roles of field type, field use in the surroundings, and distance from a field to the nearest woodlot on the abundance of seed-eating birds in a 225,000 km2 study area in the pampas of central argentina. during spring-summer and autumn of 2011-2013, we randomly selected 392 fields and used transect ... | 2017 | 29491986 |
| lipoprotein characterization in quaker parrots (myiopsitta monachus) using gel-permeation high-performance liquid chromatography. | lipid accumulation disorders, such as atherosclerosis and hepatic lipidosis, are common in psittacine birds and associated with various dyslipidemias. gel-permeation high-performance liquid chromatography (gp-hplc) is a reference method for advanced lipoprotein profiling based on particle size separation, followed by an analysis of lipid contents. | 2020 | 32966641 |
| minimum anesthetic concentration of isoflurane and sparing effect of midazolam in quaker parrots (myiopsitta monachus). | to determine the effects of midazolam on the minimum anesthetic concentration (mac) reduction of end-tidal isoflurane concentration (fe'iso) measured using an electrical stimulus in quaker parrots (myiopsitta monachus). | 2020 | 32201049 |
| the use of alfaxalone in quaker parrots (myiopsitta monachus). | alfaxalone is a neurosteroid anesthetic that acts on gamma-aminobutyric acid alpha-receptors. the objective of this study was to evaluate the clinical safety and efficacy of alfaxalone (alfaxan cd). due to observed hyperexcitability in the subject animals when alfaxalone was the only drug used during the initial trials, premedication with midazolam was also evaluated during the final study. ten adult quaker parrots (myiopsitta monachus) were assigned to 3 groups: 1) low-dose alfaxalone 10 mg/kg ... | 2019 | 31833302 |
| interactions between invasive monk parakeets (myiopsitta monachus) and other bird species during nesting seasons in santiago, chile. | the monk parakeet (myiopsitta monachus) is considered to be one of the most invasive bird species because its unique ability among parrots to build their own communal nests. currently, they are considered an invasive species in 19 countries and a pest-even in their native distribution-because of economic losses derived from their impacts. during the reproductive seasons of 2017 and 2018, we registered interactions between invasive monk parakeets and resident bird species in santiago, chile. we o ... | 2019 | 31694253 |
| the uropygial gland of the monk parakeet myiopsitta monachus: histology, morphogenesis, and evolution within psittaciformes (aves). | we describe the morphology, histology, and histochemical characteristics of the uropygial gland (ug) of the monk parakeet myiopsitta monachus. the ug has a heart-shape external appearance and adenomers extensively branched with a convoluted path, covered by a stratified epithelium formed by different cellular strata and divided into three zones (based on the epithelial height and lumen width), a cylindrical papilla with an internal structure of delicate type and two excretory pores surrounded by ... | 2020 | 31682321 |
| genome sequence of a divergent avian metapneumovirus from a monk parakeet (myiopsitta monachus). | here, we report the coding-complete genome sequence of an avian metapneumovirus from a monk parakeet (myiopsitta monachus), identified by metagenomic next-generation sequencing during an investigation into a disease outbreak in a captive parrot breeding facility. based on divergence from known strains, this sequence represents a new subgroup of avian metapneumovirus. | 2019 | 31000555 |
| mediterranean versus atlantic monk parakeets myiopsitta monachus: towards differentiated management at the european scale. | the monk parakeet myiopsitta monachus (boddaert), native to south america, is an invasive species in several european countries, causing crop damage and potential negative impacts on wildlife. only spain and great britain have regulations to control monk parakeets, thus fast growth and spread of populations are likely to occur on a wide scale. the aims of this research are to update information on the distribution and population size of monk parakeets in europe, assess whether differences in pop ... | 2019 | 30620129 |
| lipid-related lesions in quaker parrots ( myiopsitta monachus). | the quaker parrot has been used as a psittacine model to study clinical lipidology and lipid-related disorders. however, while quaker parrots appear to be anecdotally susceptible to a variety of spontaneous dyslipidemic disorders and lesions caused by excess lipid accumulation, epidemiologic data are lacking. a multicenter retrospective study on 652 pathology submissions (411 necropsies and 243 biopsies) from quaker parrots was performed by recording the final pathological diagnoses, age, and se ... | 2019 | 30244665 |
| quantitative genetics in the monk parakeet (myiopsitta monachus) from central argentina: estimation of heritability and maternal effects on external morphological traits. | the monk parakeet (myiopsitta monachus) is a south american species unique among parrots; it builds communal stick nests that allow independence from tree or cliff cavities required by most parrots. as a very successful invasive species, it has expanded into several countries around the world. questions remain around the factors that allowed this species to be such a successful invader in its native range as in other countries, and particularly the extent that evolutionary processes may be invol ... | 2018 | 30075029 |
| the parakeet protectors: understanding opposition to introduced species management. | the surveillance and control of introduced and invasive species has become an increasingly important component of environmental management. however, initiatives targeting 'charismatic' wildlife can be controversial. opposition to management, and the subsequent emergence of social conflict, present significant challenges for would-be managers. understanding the substance and development of these disputes is therefore vital for improving the legitimacy and effectiveness of wildlife management. it ... | 2019 | 29305043 |
| determination of 20, 25-diazacholesterol in avian matrices by high performance liquid chromatography/tandem mass spectrometry. | wildlife contraceptives are an emerging tool for minimizing human-wildlife conflicts. one promising avian contraceptive compound, 20,25-diazacholesterol (dac), reduces fertility by inhibiting cholesterol synthesis. a reliable analytical method for dac was required in support of its registration for use as a reproductive control agent in pest bird species. a liquid chromatographic method employing tandem mass spectrometry (lc-ms/ms) was developed for the analysis of tissue extracts following soli ... | 2017 | 28985619 |
| history of nonnative monk parakeets in mexico. | nonnative monk parakeets have been reported in increasing numbers across many cities in mexico, and were formally classified as an invasive species in mexico in late 2016. however, there has not been a large-scale attempt to determine how international pet trade and national and international governmental regulations have played a part in colonization, and when the species appeared in different areas. we describe the changes in regulations that led the international pet trade market to shift to ... | 2017 | 28926594 |
| growth curves and their implications in hand-fed monk parrots (myiopsitta monachus). | monk parrots (myiopsitta monachus) were hand-fed over two chick seasons spanning of 2010 to 2011. information from the growth curve of chicks hand-fed in 2010 was used to develop a feeding protocol for the 2011 season (protocol-2011). this protocol addressed the problems of delayed followed by excessive growth experienced by parrots hand fed in 2010. monk parrots that were hand-fed in 2011 following the new protocol experienced delayed growth after 20 days of age. however, some monk parrots were ... | 2015 | 30101117 |