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https://www.readbyqxmd.com/read/27908073/audiogram-of-the-kea-parrot-nestor-notabilis
#1
Raoul Schwing, Ximena J Nelson, Stuart Parsons
Vocal communication requires the sender to produce a sound, which transmits through the environment and is perceived by the receiver. Perception is dependent on the quality of the received signal and the receiver's frequency and amplitude sensitivity; hearing sensitivity of animals can be tested using behavioural detection tasks, showing the physical limitations of sound perception. Kea parrots (Nestor notabilis) were tested for their ability to hear sounds that varied in terms of both frequency and amplitude by means of a simple auditory detection task...
November 2016: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/27901394/computed-tomographic-anatomy-of-the-heads-of-blue-and-gold-macaws-ara-ararauna-african-grey-parrots-psittacus-erithacus-and-monk-parakeets-myiopsitta-monachus
#2
Irene A Veladiano, Tommaso Banzato, Luca Bellini, Alessandro Montani, Salvatore Catania, Alessandro Zotti
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 specimens were stored at -20°C until completely frozen, and each head was then sliced at 5-mm intervals to create reference cross sections...
December 2016: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/27900270/three-dimensional-reconstructed-magnetic-resonance-scans-accuracy-in-identifying-and-defining-knee-meniscal-tears
#3
Neil Kruger, Eugene McNally, Sami Al-Ali, Raj Rout, Jonathan L Rees, Andrew J Price
AIM: To determine whether three-dimensional (3D) reconstruction from conventional magnetic resonance imaging (MRI) is able to accurately detect a meniscal tear, and define the configuration. METHODS: Thirty-three patients' 3T MRI scan data were collected and sagittal uni-planar 3D reconstructions performed from the preoperative MRI. There were 24 meniscal tears in 24 patients, and nine controls. All patients had arthroscopic corroboration of MRI findings. Two independent observers prospectively reported on all 33 reconstructions...
November 18, 2016: World Journal of Orthopedics
https://www.readbyqxmd.com/read/27880867/psittacine-cognition-individual-differences-and-sources-of-variation
#4
REVIEW
Victoria A Cussen
Both the number and breadth of avian cognition studies have expanded in the past three decades. Parrots have a long history as subjects in avian cognition research. This paper summarizes results from a number of parrot species tested on basic learning, and physical & social cognitive processes, with an emphasis on individual differences. Early psittacine studies were aimed at demonstrating a particular cognitive ability existed in a given species. Because of this proof of capacity focus, early studies typically included only a single individual or a dyad of parrots...
November 20, 2016: Behavioural Processes
https://www.readbyqxmd.com/read/27852942/goffin-s-cockatoos-make-the-same-tool-type-from-different-materials
#5
Alice M I Auersperg, Stefan Borasinski, Isabelle Laumer, Alex Kacelnik
Innovative tool manufacture is rare and hard to isolate in animals. We show that an Indonesian generalist parrot, the Goffin's cockatoo, can flexibly and spontaneously transfer the manufacture of stick-type tools across three different materials. Each material required different manipulation patterns, including substrates that required active sculpting for achieving a functional, elongated shape.
November 2016: Biology Letters
https://www.readbyqxmd.com/read/27830736/viral-vector-vaccines-expressing-nucleoprotein-and-phosphoprotein-genes-of-avian-bornaviruses-ameliorate-homologous-challenge-infections-in-cockatiels-and-common-canaries
#6
Marita Olbert, Angela Römer-Oberdörfer, Christiane Herden, Sara Malberg, Solveig Runge, Peter Staeheli, Dennis Rubbenstroth
Avian bornaviruses are causative agents of proventricular dilatation disease (PDD), an often fatal disease of parrots and related species (order Psittaciformes) which is widely distributed in captive psittacine populations and may affect endangered species. Here, we established a vaccination strategy employing two different well described viral vectors, namely recombinant Newcastle disease virus (NDV) and modified vaccinia virus Ankara (MVA) that were engineered to express the phosphoprotein and nucleoprotein genes of two avian bornaviruses, parrot bornavirus 4 (PaBV-4) and canary bornavirus 2 (CnBV-2)...
November 10, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27801957/a-new-marker-based-on-the-avian-spindlin-gene-that-is-able-to-sex-most-birds-including-species-problematic-to-sex-with-chd-markers
#7
Deborah A Dawson, Natalie Dos Remedios, Gavin J Horsburgh
We have developed a new marker (Z43B) that can be successfully used to identify the sex of most birds (69%), including species difficult or impossible to sex with other markers. We utilized the zebra finch Taeniopygia guttata EST microsatellite sequence (CK309496) which displays sequence homology to the 5' untranslated region (UTR) of the avian spindlin gene. This gene is known to be present on the Z and W chromosomes. To maximize cross-species utility, the primer set was designed from a consensus sequence created from homologs of CK309496 that were isolated from multiple distantly related species...
November 2016: Zoo Biology
https://www.readbyqxmd.com/read/27785585/diffusion-of-novel-foraging-behaviour-in-amazon-parrots-through-social-learning
#8
Alejandra Morales Picard, Lauren Hogan, Megan L Lambert, Anna Wilkinson, Amanda M Seed, Katie E Slocombe
While social learning has been demonstrated in species across many taxa, the role it plays in everyday foraging decisions is not well understood. Investigating social learning during foraging could shed light on the emergence of cultural variation in different groups. We used an open diffusion experiment to examine the spread of a novel foraging technique in captive Amazon parrots. Three groups were tested using a two-action foraging box, including experimental groups exposed to demonstrators using different techniques and control birds...
October 26, 2016: Animal Cognition
https://www.readbyqxmd.com/read/27757370/erratum-to-effects-of-dietary-supplementation-of-golden-apple-snail-pomacea-canaliculata-egg-on-survival-pigmentation-and-antioxidant-activity-of-blood-parrot
#9
Song Yang, Qiao Liu, Yue Wang, Liu-Lan Zhao, Yan Wang, Shi-Yong Yang, Zong-Jun Du, Jia-En Zhang
[This corrects the article DOI: 10.1186/s40064-016-3051-2.].
2016: SpringerPlus
https://www.readbyqxmd.com/read/27757099/sex-differences-in-rhythmic-preferences-in-the-budgerigar-melopsittacus-undulatus-a-comparative-study-with-humans
#10
Marisa Hoeschele, Daniel L Bowling
A variety of parrot species have recently gained attention as members of a small group of non-human animals that are capable of coordinating their movements in time with a rhythmic pulse. This capacity is highly developed in humans, who display unparalleled sensitivity to musical beats and appear to prefer rhythmically organized sounds in their music. Do parrots also exhibit a preference for rhythmic over arrhythmic sounds? Here, we presented humans and budgerigars (Melopsittacus undulatus) - a small parrot species that have been shown to be able to align movements with a beat - with rhythmic and arrhythmic sound patterns in an acoustic place preference paradigm...
2016: Frontiers in Psychology
https://www.readbyqxmd.com/read/27756429/an-increase-of-larval-rearing-temperature-does-not-affect-the-susceptibility-of-phlebotomus-sergenti-to-leishmania-tropica-but-effectively-eliminates-the-gregarine-psychodiella-sergenti
#11
Magdalena Jancarova, Jana Hlavacova, Jan Votypka, Petr Volf
BACKGROUND: In mosquitoes, it has previously been shown that rearing conditions of immature stages have an effect on the vector competence of adults. Here, we studied the impact of different larval rearing temperatures (27 °C versus 32 °C) on the sand fly Phlebotomus sergenti Parrot, 1917 and its susceptibility to two parasites: Leishmania tropica Wright, 1903, a dixenous trypanosomatid transmissible from sand flies to humans, and Psychodiella sergenti Lantova, Volf & Votypka, 2010, a monoxenous sand fly gregarine...
October 18, 2016: Parasites & Vectors
https://www.readbyqxmd.com/read/27743217/early-commitment-facilitates-optimal-choice-by-pigeons
#12
Thomas R Zentall, Jacob P Case, Jonathan R Berry
Prior commitment has been found to facilitate choice of a larger later reward (e.g., healthy living) and avoid the impulsive choice of the smaller immediate reward (e.g., smoking, drug taking). In this research with pigeons, we investigated the ephemeral choice task in which pigeons are given a choice between two alternatives, A and B, with similar reinforcement provided for each; however, if they choose A, they can also choose B, whereas if they choose B, A is removed. Thus, choosing A gives them two rewards, whereas choosing B gives them only one...
October 14, 2016: Psychonomic Bulletin & Review
https://www.readbyqxmd.com/read/27738029/whole-genome-sequence-of-a-beak-and-feather-disease-virus-isolate-from-a-fledgling-red-capped-parrot-purpureicephalus-spurius
#13
Shubhagata Das, Sarker Subir, Jade K Forwood, Seyed A Ghorashi, Shane R Raidal
The complete genome sequence of beak and feather disease virus (BFDV) from a fledgling red-capped parrot (Purpureicephalus spurius) was assembled and characterized. The genome consists of 1,995 nucleotides and encodes two major proteins in opposing directions. This is the first evidence of BFDV infectivity and a complete genome sequence for this novel host.
October 13, 2016: Genome Announcements
https://www.readbyqxmd.com/read/27736232/bilateral-aural-adenocarcinoma-in-a-congo-african-grey-parrot-psittacus-erithacus-erithacus
#14
Emma L Houck, Krista A Keller, Michelle G Hawkins, Andrew G Burton, Keriann M Casey, Kevin Keel, Nathan Tong, David Sanchez-Migallon Guzman
A 28-year-old female Congo African grey parrot ( Psittacus erithacus erithacus) was evaluated because of a mass in the left external auditory meatus. Results of a computed tomography scan revealed an osteolytic left hemimandibular mass with irregular bone production and a soft tissue mass in the left external auditory meatus. Results of cytologic examination of fine needle aspirates of the hemimandible were interpreted as adenocarcinoma with reactive osteoblasts. The owner chose palliative treatment, and a debulking procedure was performed on the left external auditory meatus mass 52 days after initial presentation to control self-trauma...
September 2016: Journal of Avian Medicine and Surgery
https://www.readbyqxmd.com/read/27736227/parrots-appropriate-pets-or-best-not-bred
#15
Laurie Hess
No abstract text is available yet for this article.
September 2016: Journal of Avian Medicine and Surgery
https://www.readbyqxmd.com/read/27736222/external-beam-radiation-therapy-of-squamous-cell-carcinoma-in-the-beak-of-an-african-grey-parrot-psittacus-timneh
#16
Samantha D Swisher, Kathryn L Phillips, Jeremy R Tobias, John M Cullen, Tracy L Gieger, Vanessa L Grunkemeyer
Squamous cell carcinoma has been reported in a variety of bird species, most commonly psittacine and gallinaceous birds. The long-term prognosis in nongallinaceous birds is generally poor if complete surgical excision is not possible. Squamous cell carcinoma of the rhinotheca was diagnosed in a 34-year-old timneh African grey parrot (Psittacus timneh) with a 2-year history of beak abnormalities. No evidence of metastasis or local invasion were found on results of radiographs or computed tomography scan. The bird was treated with surgical debulking and palliative megavoltage radiation therapy...
September 2016: Journal of Avian Medicine and Surgery
https://www.readbyqxmd.com/read/27708592/fuzzy-nonnative-phonolexical-representations-lead-to-fuzzy-form-to-meaning-mappings
#17
Svetlana V Cook, Nick B Pandža, Alia K Lancaster, Kira Gor
The present paper explores nonnative (L2) phonological encoding of lexical entries and dissociates the difficulties associated with L2 phonological and phonolexical encoding by focusing on similarly sounding L2 words that are not differentiated by difficult phonological contrasts. We test two main claims of the fuzzy lexicon hypothesis: (1) L2 fuzzy phonolexical representations are not fully specified and lack details at both phonological and phonolexical levels of representation (Experiment 1); and (2) fuzzy phonolexical representations can lead to establishing incorrect form-to-meaning mappings (Experiment 2)...
2016: Frontiers in Psychology
https://www.readbyqxmd.com/read/27701767/hematologic-and-biochemical-reference-intervals-of-free-living-red-tailed-amazon-parrot-amazona-brasiliensis-nestlings-on-rasa-island-paran%C3%A3-brazil
#18
Frederico F Vaz, Rosangela Locatelli-Dittrich, Olair C Beltrame, Elenise A B Sipinski, Maria C Abbud, Rafael M Sezerban
BACKGROUND: The Red-Tailed Amazon parrot (Amazona brasiliensis) is an endangered species of the Psittaciformes. There is little information about hematologic and biochemical variables of this species. OBJECTIVES: The purpose of this study was to determine hematologic and biochemical RIs for free-living A brasiliensis nestlings on Rasa Island, Paraná, Brazil, and to compare the results between sexes. METHODS: Thirty-seven parrots were taken from their nests and physically restrained for clinical examination and blood collection...
October 4, 2016: Veterinary Clinical Pathology
https://www.readbyqxmd.com/read/27694405/european-colonization-not-polynesian-arrival-impacted-population-size-and-genetic-diversity-in-the-critically-endangered-new-zealand-k%C3%A4-k%C3%A4-p%C3%A5
#19
Laura M Bergner, Nicolas Dussex, Ian G Jamieson, Bruce C Robertson
Island endemic species are often vulnerable to decline and extinction following human settlement, and the genetic study of historical museum specimens can be useful in understanding these processes. The kākāpō (Strigops habroptilus) is a critically endangered New Zealand parrot that was formerly widespread and abundant. It is well established that both Polynesian and European colonization of New Zealand impacted the native avifauna, but the timeframe and severity of impacts have differed depending on species...
2016: Journal of Heredity
https://www.readbyqxmd.com/read/27691968/effects-of-exercise-on-the-plasma-lipid-profile-in-hispaniolan-amazon-parrots-amazona-ventralis-with-naturally-occurring-hypercholesterolemia
#20
Kate A Gustavsen, Kimber L Stanhope, Amy S Lin, James L Graham, Peter J Havel, Joanne R Paul-Murphy
Hypercholesterolemia is common in psittacines, and Amazon parrots ( Amazona spp.) are particularly susceptible. Associations have been demonstrated between naturally occurring and experimentally induced hypercholesterolemia and atherosclerosis in psittacines. Daily exercise improves lipid metabolism in humans and other mammals, as well as pigeons and chickens, under varying experimental conditions. Hispaniolan Amazon parrots ( Amazona ventralis ) with naturally occurring hypercholesterolemia (343-576 mg/dl) were divided into two groups...
September 2016: Journal of Zoo and Wildlife Medicine: Official Publication of the American Association of Zoo Veterinarians
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