| Stable panoramic views facilitate snap-shot like memories for spatial reorientation in homing pigeons. | Following spatial disorientation, animals can reorient themselves by relying on geometric cues (metric and sense) specified both by the macroscopic surface layout of an enclosed space and prominent visual landmarks in arrays. Whether spatial reorientation in arrays of landmarks is based on explicit representation of the geometric cues is a matter of debate. Here we trained homing pigeons (Columba livia) to locate a food-reward in a rectangular array of four identical or differently coloured pipe ... | 2011 | 21818360 |
| biased sex ratio and niche restriction in baruscapillaria obsignata (madsen 1945) (nematoda, capillariidae) from columba livia (aves, columbidae). | in the present study populations of the avian nematode species baruscapillaria obsignata are described from columba livia. male and female individuals were obtained from 27 birds, fixed in alcohol/formalin/acetic acid (afa) and preserved in 70% ethanol. nematodes were identified and then counted under a stereoscopic microscope. baruscapillaria obsignata were much more frequent in the anterior third of the small intestine, and females were more abundant than males in all infra populations. the pr ... | 2011 | 22004684 |
| adapting the buccal micronucleus cytome assay for use in wild birds: age and sex affect background frequency in pigeons. | micronucleus (mn) formation has been used extensively as a biomarker of damage from genotoxic exposures. the buccal mn cytome (bmcyt) assay provides a noninvasive means of quantifying mn frequency in humans, but it has not been developed for use in wildlife. we adapted the bmcyt assay for use in wild birds, with a focus on feral pigeons (columba livia) as a potential indicator species. five of six urban bird species sampled using oral cavity swabs produced sufficient buccal cells for the bmcyt a ... | 2011 | 22121057 |
| outbreak of mycobacterium avium subsp. avium infection in one flock of domestic pigeons. | an outbreak of mycobacterium avium subsp. avium infection was diagnosed in one breed of domestic pigeons (columba livia f. domestica) in the czech republic. nodular granulomatous lesions were found in 42 (9.7%) pigeons of the 435 examined; histopathologic examination of livers with gross lesions of mycobacteriosis from 15 randomly selected pigeons revealed granulomatous inflammation typical for avian mycobacteriosis in all samples. direct ziehl-neelsen (zn) microscopy and conventional culture we ... | 2011 | 22017056 |
| West nile virus infection of birds, Mexico. | West Nile virus (WNV) has caused disease in humans, equids, and birds at lower frequency in Mexico than in the United States. We hypothesized that the seemingly reduced virulence in Mexico was caused by attenuation of the Tabasco strain from southeastern Mexico, resulting in lower viremia than that caused by the Tecate strain from the more northern location of Baja California. During 2006-2008, we tested this hypothesis in candidate avian amplifying hosts: domestic chickens, rock pigeons, house ... | 2011 | 22172633 |
| finding the best angle: pigeons (columba livia) weight angular information more heavily than relative wall length in an open-field geometry task. | pigeons were trained to locate food in two geometrically equivalent corners of a parallelogram-shaped enclosure. both the angular amplitude of the corners and the length of the walls alone were sufficient for successfully completing the task. following training, birds were tested in three separate conditions that manipulated the geometric information available. during tests in both a rectangular-shaped enclosure that preserved the wall length information but not the angular amplitude, and a rhom ... | 2011 | 21918871 |
| Impact of urban environment and host phenotype on the epidemiology of Chlamydiaceae in feral pigeons (Columba livia). | Chlamydiaceae are obligate intracellular Gram-negative bacteria found all over the world and known to cause various forms of disease in animals and humans. Urban pigeons are known to be an important reservoir of Chlamydia psittaci, the agent of human psittacosis. In this study, we examined the influence of pigeon houses used to regulate pigeon populations and of melanin-based coloration on several epidemiological parameters of Chlamydiaceae in 708 urban pigeons in Paris. We also identified speci ... | 2011 | 21933318 |
| Influenza A virus monitoring in urban and free-ranging pigeon populations in Germany, 2006-2008. | Tracheal and cloacal swabs as well as blood samples from 408 feral urban (Columba livia forma domestica) and 170 free-ranging wood pigeons (Columba palumbus) in Germany were tested for infection with avian influenza viruses (AIVs). Neither influenza A virus was isolated in the swab samples nor influenza A virus RNA detected using real-time reverse transcriptase-PCR (RT-qPCR). In three urban feral pigeons, avian paramyxovirus (APMV) serotype 1 was isolated. Two of 123 serum samples from hunted fr ... | 2011 | 22017045 |
| Indirect evidence for microbiota reduction through dietary mannanoligosaccharides in the pigeon, an avian species without functional caeca. | A feeding trial was conducted to evaluate the effects of mannanoligosaccharides (MOS) on nutrient digestibility, intestinal pH, gut morphology and faecal bacteriology of pigeons, as model for birds without functional caeca. Sixteen adult pigeons (Columba livia domestica) were randomly allotted to either an extruded pellet diet with or without 0.4% MOS. After an adaptation period of 24 days, excreta were collected during 4 days. Apparent nutrient digestibility coefficients were determined using t ... | 2011 | 22074297 |
| Identification of shiga toxin and intimin coding genes in Escherichia coli isolates from pigeons (Columba livia) in relation to phylotypes and antibiotic resistance patterns. | Shiga toxin-producing Escherichia coli (STEC) strains are responsible for outbreaks of human intestinal diseases worldwide. Pigeons are distributed in public areas and are potential reservoirs for pathogenic bacteria. One hundred fifty-four fresh fecal samples were obtained from trapped pigeons in southeast of Iran and were cultured for isolation of E. coli. The isolates were examined to determine the prevalence of stx1, stx2, and eae genes, antimicrobial resistance, and their phylotypes. The co ... | 2012 | 22105907 |
| prevalence of chlamydia psittaci in the feral pigeon population of basel, switzerland. | feral pigeons (columba livia) are commonly infected with chlamydia psittaci, the agent of psittacosis in humans. to assess the zoonotic risk posed by feral pigeons in the urban environment, we examined the presence of the chlamydia psittaci outer membrane protein a (ompa) gene in pharyngeal and cloacal samples of 202 feral pigeons present in a loft in basel, switzerland. additionally, we examined 620 fresh faecal droppings of feral pigeons at 6 public sites in basel. the ompa gene of c. psittaci ... | 2011 | 21921110 |
| helminth community composition, structure, and pattern in six dove species (columbiformes: columbidae) of south texas. | abstract abstract: the helminth community composition and structure of 6 species of columbids residing in south texas are reported and compared herein. sixty rock pigeons, columba livia (rp), mourning doves, zenaida macroura (md), eurasian collared-doves, streptopelia decaocto (ecd), white-winged doves, zenaida asiatica (wwd), common ground doves, columbina passerina (cgd), and 48 inca doves, columbina inca (id), were collected during the summer of 2006 and examined for helminths. twelve he ... | 2011 | 21955248 |
| genetic diversity of the japanese wood pigeon, columba janthina, endemic to islands of east asia, estimated by newly developed microsatellite markers. | the japanese wood pigeon columba janthina is endemic to islands of east asia and is listed as near threatened by the international union for conservation of nature (iucn). one subspecies, c. janthina nitens, in particular, is at the greatest risk of extinction due to its small population size. to reduce the extinction risk of c. janthina, it is important to understand the species' present genetic status and to develop an appropriate conservation plan based on genetic data. we developed seven new ... | 2011 | 22132786 |
| afferent and efferent projections of the mesopallium in the pigeon (columba livia). | the mesopallium is a thick cell plate occupying a substantial portion of the avian dorsal pallium, but its hodology is incompletely known. in pigeons we examined fiber connections of the frontodorsal (mfd) and frontoventral mesopallium (mfv), the ventrolateral mesopallium (mvl), the lateral (mivl) and medial (mivm) parts of the intermediate ventral mesopallium, and the caudal mesopallium (mc). mfv, mivl, and mc connect reciprocally with secondary centers of the trigeminal, tectofugal, and audito ... | 2011 | 21935938 |
| telencephalic organization of the olfactory system in homing pigeons (columba livia). | pigeons use olfactory cues to navigate over unfamiliar areas, and any impairment of the olfactory system generates remarkable reduction of homing performance. lesion and deprivation studies suggest a critical involvement of the right nostril and thus, the right olfactory bulb (ob) and the left piriform cortex (cpi) for initial orientation. this functional pattern suggests that ob and cpi are asymmetrically connected with a stronger projection from the right ob to the left cpi. however, the struc ... | 2011 | 21846495 |
| possible cues driving context-specific adaptation of optocollic reflex in pigeons (columba livia). | context-specific adaptation (shelhamer m, clendaniel r. neurosci lett 332: 200-204, 2002) explains that reflexive responses can be maintained with different "calibrations" for different situations (contexts). which context cues are crucial and how they combine to evoke context-specific adaptation is not fully understood. gaze stabilization in birds is a nice model with which to tackle that question. previous data showed that when pigeons (columba livia) were hung in a harness and subjected to a ... | 2011 | 22049337 |
| mechanical properties of the avian acrocoracohumeral ligament and its role in shoulder stabilization in flight. | control of movement in the avian shoulder joint is fundamental to understanding the avian wingstroke. the acrocoracohumeral ligament (ahl) is thought to play a key role in stabilizing the glenoid and balancing the pectoralis in gliding flight. if the ahl has to be taut to balance the pectoralis, then it must constrain glenohumeral motion during flapping flight as well. however, birds vary wing kinematics depending on flight speed and behavior. how can a passive ligament accommodate such varying ... | 2011 | 22105988 |
| The distribution of zebrin immunoreactive purkinje cell terminals in the cerebellar and vestibular nuclei of birds. | Zebrin II (aldolase C) is expressed in a subset Purkinje cells in the mammalian and avian cerebella such that there is a characteristic parasagittal organization of zebrin immunopositive stripes alternating with zebrin immunonegative stripes. Zebrin is not only expressed in the soma and dendrites of Purkinje cells, but also in their axonal terminals. Here, we describe the distribution of zebrin immunoreactivity in both the vestibular and cerebellar nuclei of pigeons (Columbia livia) and hummingb ... | 2011 | 22105608 |
| biodiversity and prevalence of parasites of domestic pigeons (columba livia domestica) in a selected semiarid zone of south khorasan, iran. | five species of nematodes and cestodes were collected from alimentary canals of pigeons: the nematodes were two species: ascaridia colombae (16.66%) and hadjelia truncata (1.96%), while the cestodes were cotugnia digonopora (13.79%), raillietina magninumida (18.62%) and raillietina achinobothridia (32.35%); fecal examination revealed: eimeria spp. (40.19%) and cryptosporidium oocysts (2.94%); and blood smears showed: haemoproteus cloumbae (47/05%); in mouth, throat and larynx: trichomonans galli ... | 2012 | 22081317 |
| sarcocystis calchasi-associated neurologic disease in a domestic pigeon in north america. | tissue cysts of a protozoan parasite were present in the skeletal muscle of a domestic pigeon (columba livia f. domestica) with neurologic disease in minnesota, usa. the animal had a severe granulomatous meningoencephalitis. the cysts were slender, up to 1 mm long and up to 0.03 mm in diameter. the cysts had a smooth wall without projections. size and wall morphology were compatible with sarcocystis calchasi. polymerase chain reaction using s. calchasi-specific primers resulted in a specific amp ... | 2011 | 21848932 |
| [Peculiarities of secondary structure of serum albumin of some representatives of the animal kingdom]. | Methods of infrared (IR) spectroscopy and circular dichroism (CD) are suitable techniques for detection of proteins structural changes. These methods were used for determinating peculiarities of the secondary structure of serum albumins in some representatives of two classes of reptiles: Horsfield's tortoise (Testudo horsfieldi), water snake (Natrix tessellata) and grass snake (Natrix natrix) and birds: domestic goose (Anser anser), domestic chicken (Gallus domesticus), domestic duck (Anas platy ... | 2011 | 21888056 |
| plasma and whole brain cholinesterase activities in three wild bird species in mosul, iraq: in vitro inhibition by insecticides. | plasma and brain cholinesterase activities were determined in three wild bird species to assess their exposure to organophosphate and carbamate insecticides which are used in agriculture and public health. in the present study, we used an electrometric method for measurement of cholinesterase activities in the plasma and whole brain of three indigenous wild birds commonly found in northern iraq. the birds used were apparently healthy adults of both sexes (8 birds/species, comprising 3-5 from eac ... | 2011 | 22058655 |
| Serotonin 5-HT(1A) receptor binding sites in the brain of the pigeon (Columba livia). | Present knowledge about the serotonergic system in birdbrains is very limited, although the pigeon was used as an animal model in various studies focused on the behavioral effects of serotonergic transmission. In the mammalian brain the 5-HT(1A) receptor is the most widespread serotonin receptor type, and is involved in various functions. Less is known about the distribution of 5-HT(1A) receptors in the avian species. Therefore, we analyzed serotonin 5-HT(1A) receptor binding sites in the pigeon ... | 2012 | 22100786 |
| [avian diversity and bird strike risk at fuyang airport]. | from june 2008 to january 2010, a survey of avian communities was conducted in five habitats (grassland, farmland, town, wetland, and woodland) at fuyang airport and its surrounding areas, with the diversity indices in different seasons and different habitats analyzed. a total of 122 avian species belonging to 15 orders and 40 families were recorded. at fuyang airport, the avian species number was significantly higher in summer and autumn than in winter and spring, the avian density was the high ... | 2011 | 22007473 |
| pigeons steer like helicopters and generate down- and upstroke lift during low speed turns. | turning is crucial for animals, particularly during predator-prey interactions and to avoid obstacles. for flying animals, turning consists of changes in (i) flight trajectory, or path of travel, and (ii) body orientation, or 3d angular position. changes in flight trajectory can only be achieved by modulating aerodynamic forces relative to gravity. how birds coordinate aerodynamic force production relative to changes in body orientation during turns is key to understanding the control strategies ... | 2011 | 22123982 |
| newcastle disease in the european union 2000 to 2009. | newcastle disease (nd) is a devastating disease of poultry that has to some extent been neglected by those working in the field in the past 10 to 15 years while attention has been focused on the emergence and spread of highly pathogenic avian influenza caused by a h5n1 subtype virus. during 2000 to 2009 in the european union (eu) member states, nd viruses virulent for chickens have been detected in wild birds, domesticated pigeons and poultry. based on these isolations it appears that the epizoo ... | 2011 | 22107088 |
| attentional capture? synchronized feedback signals from the isthmi boost retinal signals to higher visual areas. | when a salient object in the visual field captures attention, the neural representation of that object is enhanced at the expense of competing stimuli. how neural activity evoked by a salient stimulus evolves to take precedence over the neural activity evoked by other stimuli is a matter of intensive investigation. here, we describe in pigeons (columba livia) how retinal inputs to the optic tectum (teo, superior colliculus in mammals), triggered by moving stimuli, are selectively relayed on to t ... | 2012 | 22262908 |
| flexural stiffness of feather shafts: geometry rules over material properties. | flight feathers of birds interact with the flow field during flight. they bend and twist under aerodynamic loads. two parameters are mainly responsible for flexibility in feathers: the elastic modulus (young's modulus, e) of the material (keratin) and the geometry of the rachises, more precisely the second moment of area (i). two independent methods were employed to determine young's modulus of feather rachis keratin. moreover, the second moment of area and the bending stiffness of feather shaft ... | 2012 | 22246249 |
| prevalence of haemoproteus columbae and trichomonas gallinae in pigeons (columba domestica) in isfahan, iran. | the aim of this study was to determine the prevalence of haemoproteus columbae and trichomonas gallinae in pigeons (columba domestica) in isfahan, iran. study was done on 100 pigeons from january to june 2010 in isfahan located in south of iran. oropharyngeal swabs were taken from all birds. also blood samples were obtained from wing vein and thin smears were prepared from them. all smears were stained by giemsa and were examined by immersion. out of 100 oropharyngeal swab smears 57 (57%) were p ... | 2011 | 23542461 |
| prevalence of pigeon haemosporidians and effect of infection on biochemical factors in iran. | prevalence of pigeon haemosporidians and effect of infection with haemoproteus columbae on biochemical factors were investigated in 280 wild pigeons (columba livia) captured from various locations in khorasan province, in eastern of iran, between april 2008 and june 2009. infection prevalence with h. columbae and leucocytozoon was detected 50 and 2%, respectively. however, no pigeon showed infection with plasmodium. alanine aminotransferase (alt), aspartate aminotransferase (ast), and albumin we ... | 2011 | 23024504 |
| tapeworms of rock dove and domestic chicken in taif area, saudi arabia. | the present study aimed to identify the tapeworms that parasitize the rock dove columba livia palastinae and domestic chicken gallus gallus domesticus in taif governorate, saudi arabia. a total of 115 rock doves and 105 domestic chicken have been examined. birds were brought in from the wells and farms inside and outside the city of taif. in rock doves, the percentage of infection was recorded as cotugnia digonopora 5.21%, hymenolepis carioca 10.43%, raillietina echinobothrida 27.82%, raillietin ... | 2012 | 23469626 |
| [sense organs on palps and fore tarsi of gamasid mites (parasitiformes, rhinonyssidae), parasites of the nasal cavity of the great tit, the rock dove, and the eurasian coot]. | the main sensory organs (the palpal organ and the tarsal sensory complex) were examined by scanning electron microscopy method in parasites of the nasal cavity of the great tit parus major (ptilonyssus sairae, ptilonyssus pari), the rock dove columba livia (mesonyssus melloi), and the eurasian coot fulica atra (rallinyssus caudistigmus). it was shown that differences in the topography of sensilla within the tarsal complex correspond to the taxonomic relations between species and genera, whereas ... | 2012 | 23458012 |
| the parasitic communities of the rock pigeon columba livia from iraq: component and importance. | the main objectives of the present study were to investigate the rock pigeon parasitic communities from iraq as well as reporting on the prevalence and intensity of various infections from both sexes. | 2012 | 23339946 |
| prevalence and pathological lesion of trichomonas gallinae in pigeons of iran. | this research was conducted to determine the prevalence and pathological lesion of trichomonas gallinae in pigeons in the northeast part of iran. wet mount preparations from the oral cavity/crop of 418 pigeons (columba livia) captured from various locations in khorasan province analyzed for t. gallinae by giemsa's staining between april 2008 and june 2009. a total of 418 pigeons, 37.32% (n = 156) were infected with t. gallinae. macroscopically, the oropharynx of infected pigeons has white, caseo ... | 2011 | 23024501 |
| new records of haemoproteus and plasmodium (sporozoa: haemosporida) of rock pigeon (columba livia) in india. | the prevalence, intensity and morpho-variants of new species of haemosporida (haemoproteus and plasmodium) from the rock pigeon, columba livia are described and illustrated for the first time from uttar pradesh state of india. thin blood smears from 266 c. livia indicated 55.63% (haemoproteus) and 6.76% (plasmodium) prevalence and 1-6 pars/100 rbc's (haemoproteus) and 1-2 pars/100 rbc's (plasmodium) intensity of infection. the fully grown intracellular gametocytes of haemoproteus were differenti ... | 2011 | 23024498 |
| neoplasms in two racing pigeons. | a large ovarian papillary adenocarcinoma occurred in a 7-year-old female racing pigeon; a multicentric lymphosarcoma was found in the tissues of a 14-year-old female racing pigeon. | 2013 | 3755337 |
| prevalence and risk factors for campylobacter spp., salmonella spp., coxiella burnetii, and newcastle disease virus in feral pigeons (columba livia) in public areas of montreal, canada. | feral pigeons (columbia livia) can harbor a range of zoonotic pathogens. a transversal study was undertaken to estimate the prevalence of feral pigeons infected by various pathogens in public areas in montreal, quebec. cloacal swabs from captured birds were cultured for salmonella spp. and campylobacter spp. and tested by real-time polymerase chain reaction (rt-pcr) for the detection of coxiella burnetii. an oropharyngeal swab was also submitted to real-time reverse-transcription polymerase chai ... | 2016 | 26733736 |
| genome and transcriptome adaptation accompanying emergence of the definitive type 2 host-restricted salmonella enterica serovar typhimurium pathovar. | salmonella enterica serovar typhimurium definitive type 2 (dt2) is host restricted to columba livia (rock or feral pigeon) but is also closely related to s. typhimurium isolates that circulate in livestock and cause a zoonosis characterized by gastroenteritis in humans. dt2 isolates formed a distinct phylogenetic cluster within s. typhimurium based on whole-genome-sequence polymorphisms. comparative genome analysis of dt2 94-213 and s. typhimurium sl1344, dt104, and d23580 identified few differe ... | 2013 | 23982073 |
| first detection of west nile virus in domestic pigeon in korea. | west nile virus (wnv) is a mosquito-borne zoonotic pathogen that has spread throughout europe and the united states. recently, wnv spread to east and southeast asia, and great efforts have been made in south korea to prevent the spread of wnv from neighboring countries. in this study, we diagnosed the first case of wnv in pigeons (columba livia domestica) residing in cities using a competitive enzyme-linked immunosorbent assay and confirmed it with nested reverse transcription polymerase chain r ... | 0 | 27030190 |
| the viruses of wild pigeon droppings. | birds are frequent sources of emerging human infectious diseases. viral particles were enriched from the feces of 51 wild urban pigeons (columba livia) from hong kong and hungary, their nucleic acids randomly amplified and then sequenced. we identified sequences from known and novel species from the viral families circoviridae, parvoviridae, picornaviridae, reoviridae, adenovirus, astroviridae, and caliciviridae (listed in decreasing number of reads), as well as plant and insect viruses likely o ... | 2013 | 24023772 |
| use of observed wild bird activity on poultry farms and a literature review to target species as high priority for avian influenza testing in 2 regions of canada. | the risk of avian influenza outbreaks in poultry is partially dependent on the probability of contact between domestic poultry and wild birds shedding avian influenza (ai) virus. the major objective of this study was to document wild bird activity on poultry farms to determine which wild bird species should be targeted for ai surveillance in canada. we collected data in 2 major poultry producing regions of canada, southwestern ontario and the fraser valley of british columbia, on the relative ab ... | 0 | 22851777 |
| prevalence of parasites and associated risk factors in domestic pigeons (columba livia domestica) and free-range backyard chickens of sistan region, east of iran. | this study was carried out on free-range backyard chickens and domestic pigeons (columba livia domestica) from december 2010 to november 2011 to determine the prevalence, intensity and species of internal and external parasites in sistan region, east of iran. of the total of 59 (27 males and 32 females) free-range backyard chickens and 46 (26 males and 20 females) domestic pigeons inspected, 55 (93.22 %) and 39 (84.78 %) were infected respectively. ten species of free-range backyard chickens par ... | 2012 | 24082532 |
| identification and immune functional characterization of pigeon tlr7. | toll-like receptor 7 (tlr7) is activated by single-stranded rna and synthetic imidazoquinoline components, and induces interferon production. in this study, we cloned the tlr7 gene from king pigeon (columba livia). the tlr7 open reading frame is 3144 bp and encodes a 1047-amino acid protein, consisting of a canonical tlr composition with 15 leucine-rich repeats (lrrs). amino acid-inserting modifications were found at position 15 of lrr2, lrr11, lrr13, and lrr14 and position 10 of lrr10. the tiss ... | 2015 | 25874762 |
| lack of experience-based stratification in homing pigeon leadership hierarchies. | in societies that make collective decisions through leadership, a fundamental question concerns the individual attributes that allow certain group members to assume leadership roles over others. homing pigeons form transitive leadership hierarchies during flock flights, where flock members are ranked according to the average time differences with which they lead or follow others' movement. here, we test systematically whether leadership ranks in navigational hierarchies are correlated with prior ... | 2016 | 26909176 |
| quack leptin. | a lep transcript up-regulated in lungs of ducks (anas platyrhynchos) infected by avian influenza a virus was recently described in the nature genetics manuscript that reported the duck genome. in vertebrates, lep gene symbol is reserved for leptin, the key regulator of energy balance in mammals. | 2014 | 24992969 |
| the earliest pigeon fanciers. | feral pigeons have colonised all corners of the earth, having developed a close association with humans and their activities. the wild ancestor of the feral pigeon, the rock dove, is a species of rocky habitats, nesting typically on cliff ledges and at the entrance to large caves. this habit would have brought them into close contact with cave-dwelling humans, a relationship usually linked to the development of dwellings in the neolithic. we show that the association between humans and rock dove ... | 2014 | 25101932 |
| temporal variation of the cestode, cotugnia cuneata (meggit, 1924) in their host, domestic pigeons, columba livia domestica (gmelin, 1789). | a study of the temporal variation of cotugnia cuneata, on a monthly basis, was carried out from january 2008 to december 2010. the study revealed a similarity in the percentage prevalence and mean intensity of infection with higher values in the beginning of the year that gradually declined towards the middle and rose to moderate values towards the end of the year. the periodicity clearly shows a correlation with the seasonal changes throughout the year and provides important insights to the sur ... | 2013 | 26063999 |
| biochemical and molecular characterization of the cyclophyllidean cestode, cotugnia cuneata (meggit, 1924), an endoparasite of domestic pigeons, columba livia domestica. | analysis of the major biochemical constituents of cotugnia cuneata revealed that the total protein, carbohydrate, glycogen and lipid contents (as percentage of dry weight) were 25.22 ± 0.93, 32.90 ± 0.30, 21.33 ± 0.99 and 9.94 ± 0.42 respectively. the results showed that the carbohydrate content was the highest followed by protein and lipid contents respectively. glycogen content was relatively high which showed that carbohydrate was mainly present in the form of glycogen in these cestodes. the ... | 2012 | 24505187 |
| molecular survey on zoonotic tick-borne bacteria and chlamydiae in feral pigeons (columba livia domestica). | to determine the presence of zoonotic tick-borne bacteria in feral pigeons (columba livia domestica) from urban areas. | 2016 | 27086148 |
| synanthropic birds and parasites. | this paper describes the parasitologic findings for 60 synanthropic bird carcasses recovered in the campania region of southern italy. birds consisted of 20 yellow-legged gulls (larus michahellis), 15 rock pigeons (columba livia), 15 common kestrels (falco tinnunculus), and 10 carrion crows (corvus corone). each carcass was examined to detect the presence of ectoparasites and then necropsied to detect helminths. ectoparasites occurred in 100% of the birds examined. in particular, chewing lice we ... | 2013 | 24597118 |
| occurrence of bacterial and viral pathogens in common and noninvasive diagnostic sampling from parrots and racing pigeons in slovenia. | airborne pathogens can cause infections within parrot (psittaciformes) and pigeon (columbiformes) holdings and, in the case of zoonoses, can even spread to humans. air sampling is a useful, noninvasive method which can enhance the common sampling methods for detection of microorganisms in bird flocks. in this study, fecal and air samples were taken from four parrot holdings. additionally, cloacal and oropharyngeal swabs as well as air samples were taken from 15 racing pigeon holdings. parrots we ... | 2016 | 27309292 |
| pigeon circoviruses display patterns of recombination, genomic secondary structure and selection similar to those of beak and feather disease viruses. | pigeon circovirus (picv) has a ~2 kb genome circular ssdna genome. all but one of the known picv isolates have been found infecting pigeons in various parts of the world. in this study, we screened 324 swab and tissue samples from polish pigeons and recovered 30 complete genomes, 16 of which came from birds displaying no obvious pathology. together with 17 other publicly available picv complete genomes sampled throughout the northern hemisphere and australia, we find that picv displays a similar ... | 2014 | 24639400 |
| [effects of the environment on health of feral pigeons (columba livia)]. | we examined 80 feral pigeons and their fecal samples from two feral pigeon lofts of the "pigeon action of basel" (switzerland) for different pathogens. the tested material harbored four pathogenic agents transmissible to humans (chlamydia spp., salmonella spec., campylobacter jejuni, cryptococcus neoformans) in addition several pathogens were found which are no zoonotic agents but potentially pathogenic for the pigeons themselves, such as trichomonas gallinae, coccidia, helminths, ectoparasites ... | 2015 | 25876285 |
| epidemiological investigations on the possible risk of distribution of zoonotic bacteria through apparently healthy homing pigeons. | clinically healthy homing pigeons may serve as an unnoticed reservoir for zoonotic bacteria. hence, healthy pigeons from 172 different racing pigeon lofts were examined for salmonella serovars, campylobacter spp. and chlamydophila (chlamydia) psittaci. two samplings were performed during the racing season in summer (1242 adult and 1164 juvenile pigeons) and two during winter (1074 adult pigeons). each sampling was accompanied by a questionnaire to identify risk factors for positive lofts. betwee ... | 2013 | 23930968 |
| the complete genome sequences of poxviruses isolated from a penguin and a pigeon in south africa and comparison to other sequenced avipoxviruses. | two novel avipoxviruses from south africa have been sequenced, one from a feral pigeon (columba livia) (fep2) and the other from an african penguin (spheniscus demersus) (pepv). we present a purpose-designed bioinformatics pipeline for analysis of next generation sequence data of avian poxviruses and compare the different avipoxviruses sequenced to date with specific emphasis on their evolution and gene content. | 2014 | 24919868 |
| pcr-based diagnosis, molecular characterization and detection of atypical strains of avian chlamydia psittaci in companion and wild birds. | chlamydiosis is one of the most important infectious diseases of birds. in this study, 253 clinical samples were taken from 27 bird species belonging to seven orders. thirty-two (12.6%) samples were positive for chlamydia psittaci major outer membrane gene (ompa) dna by a nested polymerase chain reaction (pcr). twelve nested pcr-positive specimens were typed by ompa gene-based pcr-restricted fragment length polymorphism, using ctu/ctl primers and alui restriction enzyme. four restriction pattern ... | 2013 | 23391180 |
| detection of chlamydia psittaci in feral pigeons (columba livia domestica) in slovakia and their characterisation. | chlamydia psittaci, an obligate intracellular bacterium, which is the etiologic agent of avian chlamydiosis in birds and ornithosis/psittacosis in humans, has been reported to be one of the most common pathogens found in feral pigeons worldwide, and thus constitutes a zoonotic risk. the aim of the study was to investigate pigeons in slovakia living in areas in close proximity to humans for the presence of c. psittaci, using pharyngeal and cloacal swabs. | 2016 | 27007521 |
| detection and characterization of chlamydophila psittaci in asymptomatic feral pigeons (columba livia domestica) in central thailand. | to detect and characterize chlamydophila psittaci (c. psittaci) in asymptomatic feral pigeons in central thailand. | 2015 | 25902021 |
| the prevalence and genetic characterization of chlamydia psittaci from domestic and feral pigeons in poland and the correlation between infection rate and incidence of pigeon circovirus. | chlamydiosis is a zoonotic disease caused by chlamydia psittaci that occurs in a wide range of bird species. high infection rates with c. psittaci are found in pigeons, which can act as vectors transmitting this bacterium to poultry and humans. chlamydia shedding by pigeons is intermittent and can be activated by stressors or immunosuppression. the most common immunosuppressive factor for pigeons is a pigeon circovirus (picv) infection. the main aim of the study was to evaluate the prevalence of ... | 2014 | 25306457 |
| epidemiology of chlamydia psittaci infection in racing pigeons and pigeon fanciers in beijing, china. | over 3 million racing pigeons (columba livia) are registered in beijing city center for gambling purposes. during 2008-2010, we evaluated the occurrence and prevalence of chlamydia psittaci in racing pigeons as well as the possible zoonotic transmission to pigeon fanciers in six districts of beijing where pigeon races are particularly popular. c. psittaci-specific serum antibody titres were obtained from 370 pigeons and 79 fanciers using enzyme-linked immunosorbent assay. in addition, 206 and 67 ... | 2015 | 25244602 |
| [efficacy of doxycycline for treatment of chlamydiosis in flocks of racing and fancy pigeons]. | evaluation of the clinical efficacy of doxycycline application via drinking water in the treatment of chlamydiosis in infected, clinically ill flocks of racing and fancy pigeons (columba livia f. domestica) under field conditions. | 2013 | 24326879 |
| seroprevalence of chlamydia psittaci infection in market-sold adult chickens, ducks and pigeons in north-western china. | chlamydia psittaci, the agent of psittacosis in humans, infects a wide range of avian species. to assess the risk of psittacosis posed by domestic birds in the urban environment, the prevalence of c. psittaci antibodies in 413 chickens (gallus domesticus; 305 caged and 108 free-range), 334 ducks (anas spp.; 111 caged and 223 free-range) and 312 pigeons (columba livia) in lanzhou, north-western china, was detected using the indirect haemagglutination assay. the specific antibodies were found in s ... | 2013 | 23699067 |
| chlamydia psittaci genotype b in a pigeon (columba livia) inhabiting a public place in san josé, costa rica. | human chlamydiosis is a zoonotic disease of avian origin caused by chlamydia psittaci. the highest infection rates have been detected in parrots (psittacidae) and pigeons (columbiformes), the latter most frequently carry the genotypes b and e. these genotypes have been shown to also infect humans. because pigeons (columba livia) cohabit with humans in urban areas, c. psittaci present in the dust from dry feces of infected pigeons may be transmitted by inhalation and represent a significant publi ... | 2013 | 26623327 |
| prevalence of columbid herpesvirus infection in feral pigeons (columba livia) from new south wales and victoria, australia, with spillover into a wild powerful owl (ninox struena). | columbid herpesvirus-1 (cohv-1) is widespread in feral pigeons ( columba livia ) in north america and europe. we used a pcr assay to detect cohv-1 dna in oral and cloacal tissues and oral swabs from naturally infected pigeons. fifty-three feral pigeons from five flocks in australia (n=3 from south-central victoria and n=2 from sydney) were examined for cohv-1 dna. we detected cohv-1 dna in oral mucosa and cloacal mucosa, with higher concentrations in the oral mucosa. the sensitivity of testing o ... | 2017 | 28192040 |
| isolation and characterization of a herpesvirus from feral pigeons in china. | a herpesvirus was isolated during a diagnostic investigation of severe cases of conjunctivitis in feral pigeons (columba livia f. domestica). isolates of the virus were recovered from throat swabs of the pigeons followed by inoculation of the swab samples in chicken embryo fibroblasts. pigeons inoculated with the isolated virus had similar clinical signs to those observed in naturally infected birds. transmission electron microscopy revealed viral structures with typical herpesvirus morphology. ... | 2015 | 26542366 |
| characterization of the first columbid herpesvirus 1 isolate from a hybrid meat-type pigeon flock in china. | infections of pigeons with herpesviruses have been described in several species of domestic and wild birds. in july 2012, increased mortality was observed in a hybrid meat-type pigeon flock in beijing, china. diagnostic tests led to the isolation of a virus designated columbid herpesvirus 1 bj strain (cohv-1bj). sequence analysis of the viral dna polymerase catalytic subunit gene revealed a single open reading frame of 3753 nt encoding 1250 amino acids. phylogenetic analysis revealed that the co ... | 2015 | 25298181 |
| detection of cohv-1 by loop-mediated amplification (lamp). application of lamp for cohv-1 incidence monitoring in domestic pigeons. | the occurrence of columbid herpesvirus-1 (cohv-1) in domestic pigeons presents a potential threat for their husbandry and trade. cohv-1 causes smadel disease among pigeons but may not be manifested by any clinical signs and complicates secondary infections. the material for our study originated from 42 domestic pigeons sent to private veterinary practice in lublin, poland, between 2011 and 2013. some of birds showed clinical signs similar to smadel disease. the cytological examination also indic ... | 2014 | 25146091 |
| phylogenetic analysis of columbid herpesvirus-1 in rock pigeons, birds of prey and non-raptorial birds in poland. | the identity of herpesviruses isolated in europe from domestic pigeons (columbid herpesvirus-1 - cohv-1) as well as falcons and owls remains unknown. all these herpesviruses are antigenically and genetically related. the falcons and owls are thought to have become infected during the ingestion of pigeon meat thus suggesting the virus's capacity to infect a wide range of hosts. the aim of the conducted study was to detect the occurrence of cohv-1 and estimating the similarities and differences in ... | 2013 | 23517888 |
| genotypic diversity of environmental cryptococcus neoformans isolates from northern portugal. | the cryptococcus neoformans/c. gattii species complex members are the main agents of systemic cryptococcosis. this disease is believed to be acquired from the environment via fungal cell inhalation. often, isolates recovered from environmental and clinical sources have proven to be genotypically similar. we assessed the occurrence of c. neoformans and c. gattii in environmental substrates collected in a portuguese region. twenty-eight isolates were identified as c. neoformans - five from decayin ... | 2014 | 23848429 |
| identification and molecular analysis of pathogenic yeasts in droppings of domestic pigeons in beijing, china. | feral pigeons are known as reservoirs of pathogenic yeasts that cause opportunistic infections in human. in the outskirts of beijing, china, pigeons are more frequently raised at homes than are encountered in public areas. many studies have focused on the presence of pathogenic yeasts in the excreta (fresh or withered) of a variety kinds of birds, pigeon crop and cloacae. one hundred and forty-three samples of fresh droppings were collected from three suburban pigeon-raising homes in an area of ... | 2012 | 22476559 |
| molecular identification of enterocytozoon bieneusi, cryptosporidium, and giardia in brazilian captive birds. | a total of 85 fecal samples from captive birds collected from october 2013 to september 2014 in uberlândia and belo horizonte in the state of minas gerais (brazil) were evaluated for the presence of enterocytozoon bieneusi, cryptosporidium, and giardia by pcr. of these, three birds were found positive for e. bieneusi (3.5%), two for cryptosporidium (2.3%), and one for giardia (1.2%). two genotypes of e. bieneusi were detected by nucleotide sequence analysis of the its region, genotypes d and per ... | 2017 | 27815734 |
| molecular characterization of cryptosporidium spp. in domestic pigeons (columba livia domestica) in guangdong province, southern china. | to investigate the prevalence and assess the zoonotic transmission burden of cryptosporidium species in domestic pigeons in guangdong province, southern china, 244 fecal samples were collected from four pigeon breeding farms between june 2012 and march 2013. cryptosporidium oocysts were purified by sheather's sugar flotation technique and characterized by dna sequencing of small subunit ribosomal rna (ssu rrna) gene. cryptosporidium species were determined by comparison of sequences with corresp ... | 2015 | 25773186 |
| invasion of flukes of the echinostomatidae family in racing pigeon ( columba livia var. domestica) lofts. | over 4 years, only two known cases of fluke invasions were diagnosed in racing pigeons ( columba livia ) originating from different regions of poland. in both cases, the invasion was characterized by a very high mortality (approximately 70%), and the source of the infestation was snails of the lymnaeidae family eaten by pigeons. fluke invasions in pigeons are extremely rare and to date have not been described in poland. therefore, the occurrence of the symptoms of hemorrhagic diarrhea and sudden ... | 2016 | 27309299 |
| captive and free-living urban pigeons (columba livia) from brazil as carriers of multidrug-resistant pathogenic escherichia coli. | thirty escherichia coli isolates from captive and free-living pigeons in brazil were characterised. virulence-associated genes identified in pigeons included those which occur relatively frequently in avian pathogenic e. coli (apec) from commercial poultry worldwide. eleven of 30 e. coli isolates from pigeons, belonging mainly to b1 and b2 phylogenetic groups, had high or intermediate pathogenicity for 1-day-old chicks. the frequency of multi-drug resistant (mdr) e. coli in captive pigeons was r ... | 2017 | 28093116 |
| application of pigeon circovirus recombinant capsid protein for detecting anti-picv antibodies in the sera of asymptomatic domestic pigeons and the potential use of a combination of serological and molecular tests for controlling circovirus infections in pigeon breeding flocks. | the aim of this study was to evaluate the serologic status of domestic pigeons not infected and asymptomatically infected with the pigeon circovirus (picv) with the use of an enzyme-linked assay based on picv recombinant capsid protein as a plate antigen. recombinant picv capsid protein was produced by transforming e. coli bl21 (de3) rosetta colonies with expression plasmids.blood samples and cloacal swabs were collected from 171 asymptomatic pigeons. the birds were divided into two groups (infe ... | 2017 | 27578880 |
| molecular cloning and characterization, and prokaryotic expression of the gnrh1 gene obtained from jinghai yellow chicken. | the gonadotropin-releasing hormone (gnrh) plays an important role in the control of reproductive functions. recent studies have reported the occurrence of gnrh molecular variants in numerous species. in this study, the gnrh1 gene from jinghai yellow chicken was cloned by reverse transcriptase-polymerase chain reaction and transformed into bl21 (de3) competent cells. the gnrh1 gene and amino acid sequences were subjected to bioinformatic analyses. the gnrh1 gene nucleotide sequence was discovered ... | 2015 | 25867433 |
| molecular characterization, genetic diversity and antibacterial susceptibility of escherichia coli encoding shiga toxin 2f in domestic pigeons. | this study aimed to evaluate prevalence, characteristics, genotypic diversity and antibacterial susceptibility of escherichia coli encoding shiga toxin 2f in domestic pigeons in different provinces of iran. a total of 117 faecal samples were collected from pigeons and were subjected to molecular detection of stx2f. in total, 20, 25·8, 21·4 and 9% of pigeons from tehran, ferdows, garmsar and babol cities carried stx2f+ isolates, respectively. of the 460 e. coli isolates examined, 43 were stx2f+ a ... | 2014 | 24863542 |
| occurrence of enteropathogenic bacteria in urban pigeons (columba livia) in italy. | this study was aimed at evaluating the prevalence of campylobacter spp., escherichia coli o157, salmonella spp., and related virulence factors (the cdt, stx, and eae genes) in urban pigeons of the coastal area of the campania region (southern italy). to achieve this goal, cloacal swab samples from a total of 1800 urban pigeons were collected and subjected to culture methods, pcr, and serotyping. the results of the present study showed a prevalence of 48.3% (870/1800), 7.8% (141/1800), and 0.9% ( ... | 2014 | 24661012 |
| response of maternally isolated rock pigeons (columba livia domestica) to different dietary concentrations of mannan-oligosaccharide. | prebiotics are being used as an alternative to antibiotic growth promoters in poultry industry with a variable degree of success. this trial was conducted to investigate the effect of dietary mannan-oligosaccharide (mos) supplementation on growth performance, selected colonic bacterial population, and immune response in maternally-isolated rock pigeons. the pigeons (n = 36) were randomly distributed in 4 treatment groups (n = 9 per group) with 3 replicates or pens (n = 3) in each group. birds we ... | 2012 | 22700504 |
| ctx-m-15-type extended-spectrum beta-lactamases-producing escherichia coli from wild birds in germany. | the isolation of escherichia coli from wild birds in germany revealed the occurrence of four ctx-m-15-producing strains from four different birds (2.3% of 172 isolates). ctx-m producers were recovered from two eurasian blackbirds, one rock pigeon and a greater white-fronted goose. all ctx-m-producing e. coli revealed a clonal relationship as determined by pulsed-field gel electrophoresis (pfge) and were assigned to multilocus sequence type (st) 648. our findings suggest the emergence of a new cl ... | 2010 | 23766249 |
| avian influenza virus with hemagglutinin-neuraminidase combination h3n6, isolated from a domestic pigeon in guangxi, southern china. | the h3 subtype of avian influenza virus can provide genes for human influenza virus through gene reassortment, which has raised great concerns about its potential threat to human health. an h3n6 subtype of avian influenza virus was isolated from guangxi province, china, in 2009. all eight gene segments of the strain were sequenced. the sequence analysis indicated that this h3n6 virus was a nature reassortant virus. the genome sequences now can be used to understand the epidemiological and molecu ... | 2015 | 25657287 |
| identification and genetic analysis of h3n8 subtype influenza viruses isolated from domestic pigeons in central china. | a novel strain of h3n8 influenza virus was isolated from domestic pigeons during the avian influenza virus (aiv) surveillance in wet markets in anhui, china, during 2013. the virus was characterized by whole-genome sequencing with subsequent genetic comparison and phylogenetic analysis. phylogenetic analysis revealed that the na gene of aiv mapped to the north american lineage, and the remaining seven genes belong to a eurasian lineage. these findings indicated that this h3n8 virus is a novel na ... | 2016 | 26611442 |
| the response of mute swans (cygnus olor, gm. 1789) to vaccination against avian influenza with an inactivated h5n2 vaccine. | recent epidemics of highly pathogenic avian influenza (hpai) produced an unprecedented number of cases in mute swans (cygnus olor) in european countries, which indicates that these birds are very sensitive to the h5n1 virus. the hpai outbreaks stirred a debate on the controversial stamping-out policy in populations of protected bird species. after preventive vaccination had been approved in the european union, several countries have introduced vaccination schemes to protect poultry, captive wild ... | 2016 | 27770803 |
| natural infection with highly pathogenic avian influenza virus h5n1 in domestic pigeons (columba livia) in egypt. | the highly pathogenic avian influenza virus (hpaiv) subtype h5n1 threatens animal and human health worldwide. susceptibility of pigeons to hpaiv (h5n1) and their role in avian influenza virus transmission to domestic birds and humans remain questionable. in this study, an outbreak in domestic pigeons (1 to 18 months old) with 50% mortality was investigated. pigeons exhibited nervous manifestations and greenish diarrhoea. necropsy of the naturally infected pigeons revealed congestion of the inter ... | 2014 | 24861170 |
| surveillance for highly pathogenic h5 avian influenza virus in synanthropic wildlife associated with poultry farms during an acute outbreak. | in november 2014, a eurasian strain h5n8 highly pathogenic avian influenza virus was detected in poultry in canada. introduced viruses were soon detected in the united states and within six months had spread to 21 states with more than 48 million poultry affected. in an effort to study potential mechanisms of spread of the eurasian h5 virus, the united states department of agriculture coordinated several epidemiologic investigations at poultry farms. as part of those efforts, we sampled synanthr ... | 2016 | 27812044 |
| susceptibility of rock doves to low-pathogenic avian influenza a viruses. | following a 2008 outbreak of north american low-pathogenic h5n8 influenza a virus at an upland gamebird farm, we sero-sampled rock doves (pigeons, columba livia) at the outbreak site and conducted experimental inoculations of wild-caught pigeons using the h5n8 virus and another low-pathogenic virus (h4n6). while 13% of pigeons at the outbreak site were seropositive, none were positive for exposure to h5, and one was positive for n8. challenged pigeons exhibited low susceptibility and limited vir ... | 2016 | 26687583 |
| pseudomalaria in a domestic pigeon: a case report. | microscopic examination of thin blood smear of a domestic pigeon brought to teaching veterinary clinical complex, junagadh, gujarat revealed mature and immature halter shaped gametocytes of haemoproteus columbae encircling the nucleated erythrocytes. the disease was diagnosed as acute infection of pigeon malaria more notably known as pseudomalaria. the parasitic infection was further confirmed by polymerase chain reaction assay targeting the cytochrome b (cyt b) gene fragment amplifying 207 base ... | 2017 | 28316429 |
| effect of haemoproteus columbae infection on the hemogram of the pigeons (columba livia domestica). | it has been reported that parasites affect the health and productivity of birds, initiate excessive preening which interrupts feeding, as the birds spend much time preening rather than being involved in other essential life activities. haemoproteuscolumbae occurs in pigeons widely in tropical and subtropical regions. the present investigation was concentrated on the effect of h. columbae infection on the hemogram and changes in the number of white blood cells in infected pigeons. blood samples t ... | 2016 | 27876958 |
| a first report of infestation by pseudolynchia canariensis in a herd of pigeons in shahrekord (southwest of iran). | pigeons (columba livia) have been kept as pet and reared for food in several countries including iran. ectoparasites are regarded as the basic causes of retardation in growth, lowered vitality and poor conditions of the birds. pseudolynchia canariensis a hippoboscidae fly is one of the important ectoparasites of pigeons and is responsible for the transmission of pathogens to birds and humans same as pathogenic protozoan haemoproteus columbae. | 2016 | 27308301 |
| hemosporidian parasites of free-living birds in the são paulo zoo, brazil. | numerous studies addressed the diversity of bird plasmodium and haemoproteus parasites. however, a few have been carried out in continental avian hotspot regions such as brazil, a country with markedly different biomes, including amazon, brazilian savanna, atlantic forest, caatinga, pantanal, and pampas. we present the first study on hemosporidian (haemosporida) parasites in free-living birds from an atlantic forest fragment where more than 80 avian species have been reported. within this area, ... | 2016 | 26677094 |
| incidence of haemoproteus columbae in pigeons of jammu district. | haemoproteus columbae is the major protozoan infection reported in pigeon and appeared in the erythrocyte of the peripheral circulation. incidence and parasitaemia of h. columbae in pigeon was studied in different localities of jammu, india for a period from april to september 2010 using thin blood smear examination. of the 150 pigeons (wild: 70, domestic: 80), 92 (61.33 %) were found to be infected with h. columbae. domestic pigeon showed higher incidence rate (74.28 %) than the wild (50 %). ma ... | 2015 | 26345046 |
| in vitro development of haemoproteus columbae (haemosporida: haemoproteidae), with perspectives for genomic studies of avian haemosporidian parasites. | the evolutionary origin of wildlife and human malaria parasites (plasmodium spp.) has been discussed for several decades. the lack of genomic data about species of wildlife haemosporidian parasites related to plasmodium limits the number of taxa available for phylogenetic analysis. genomic data about avian parasites of the genus haemoproteus parasites, the sister genus to plasmodium are still not available, mainly due to difficulties in obtaining pure dna of parasites inhabiting nucleated avian ... | 2015 | 26297677 |
| an experimental test of the effects of behavioral and immunological defenses against vectors: do they interact to protect birds from blood parasites? | blood-feeding arthropods can harm their hosts in many ways, such as through direct tissue damage and anemia, but also by distracting hosts from foraging or watching for predators. blood-borne pathogens transmitted by arthropods can further harm the host. thus, effective behavioral and immunological defenses against blood-feeding arthropods may provide important fitness advantages to hosts if they reduce bites, and in systems involving pathogen transmission, if they lower pathogen transmission ra ... | 2014 | 24620737 |
| prevalence and rate of parasitemia of haemoproteus columbae in columba iiviadomesticain southwest of iran. | parasites affect the health and productivity of birds. haemoproteus columbae occurs in pigeons widely in tropical and subtropical regions. the present investigation was concentrated on the prevalence of h. columbae and rate of parasitemia in domestic pigeons in southwest of iran. | 2013 | 25516748 |
| sex-specific effects of an avian malaria parasite on an insect vector: support for the resource limitation hypothesis. | many parasites, such as those that cause malaria, depend on an insect vector for transmission between vertebrate hosts. theory predicts that parasites should have little or no effect on the transmission ability of vectors, e.g., parasites should not reduce vector life span as this will limit the temporal window of opportunity for transmission. however, if the parasite and vector compete for limited resources, there may be an unavoidable physiological cost to the vector (resource limitation hypot ... | 2012 | 23236915 |
| identification of a novel aviadenovirus, designated pigeon adenovirus 2 in domestic pigeons (columba livia). | the young pigeon disease syndrome (ypds) affects mainly young pigeons of less than one year of age and leads to crop stasis, vomitus, diarrhea, anorexia and occasionally death. this disease is internationally a major health problem because of its seasonal appearance during competitions such as homing pigeon races or exhibitions of ornamental birds. while the etiology of ypds is still unclear, adenoviruses are frequently discussed as potential causative agents. electron microscopy of feces from a ... | 2017 | 27697452 |
| [the taxonomy of the baku virus (bakv; reoviridae, orbivirus) isolated from the birds obligate parasites argasidae ticks in azerbaijan, turkmenistan, and uzbekistan]. | the baku virus (bakv) was originally isolated from the ticks ornithodoros capensis neumann, 1901 (acari: argasidae) collected from the seagull (larus argentatus) seating nests on the islands of the baku archipelago, the caspian sea. bakv was assigned to kemerovo group (kemv) (orbivirus, reoviridae). the bakv was frequently isolated from the ticks o. coniceps canestrini, 1980, collected from l. argentatus and tern (sterna hirundo) nests in turkmenia and pigeon (columba livia neglecta) nests in uz ... | 2016 | 24772642 |
| drug susceptibility testing of mycobacterium avium subsp. avium isolates from naturally infected domestic pigeons to avian tuberculosis. | avian tuberculosis is one of the most important infections affecting most species of birds. several mycobacterial species have been identified causing avian tuberculosis, and the organisms confirmed most frequently are mycobacterium avium and mycobacterium genavense. any species of birds can be infected with m. avium. generally, domesticated fowl or captive wild birds are affected more frequently than those living in the wild. m. avium can not only infect all species of birds, but can also infec ... | 2016 | 28043565 |
| genotyping of mycobacterium avium subsp. avium isolates from naturally infected lofts of domestic pigeons in ahvaz by is901 rflp. | avian tuberculosis is one of the most important infections affecting most species of birds. mycobacterium avium can not only infect all species of birds, but also infect some domesticated mammals. the most crucial aspect of control and eradication scheme is identification of infection sources and transmission routs. molecular techniques such as restriction fragment length polymorphism and pulse field gel electrophoresis have been shown to be much more discriminatory and suitable for use in the e ... | 2015 | 26719782 |
| comparison of four different culture media for growth of mycobacterium avium subsp. avium isolated from naturally infected lofts of domestic pigeons. | diagnosis of avian tuberculosis by conventional culture method is still considered as the "gold standard" technique. the main objective of this study was to compare growth of mycobacterium avium subsp. avium on four specific mycobacterial cultures such as glycerinated lowenstein-jensen medium, pyruvate-enriched lowenstein-jensen medium, mycobactin j-supplemented herrold-egg yolk medium and plain herrold-egg yolk medium. | 2013 | 25848508 |