| pox infection among captive peacocks. | an outbreak of avian pox was detected among captive peacocks (pavo cristatus) at baghdad zoological park during spring, 1978. a total of 45 of the 60 birds in the aviary developed pox lesions around the beaks and eyes. morbidity was 75% and mortality was 13%. a virus isolated from the skin lesions produced large plaques on the chorioallantoic membrane of developing chicken embryos and induced cytopathic effect characteristic for pox viruses in chicken embryo cell cultures. the virus neither haem ... | 1979 | 230366 |
| intussusception of proventriculus in a common pea fowl (pavo cristatus). | | 1979 | 433118 |
| plasmodium durae herman from the introduced common peafowl in northern nigeria. | plasmodium (giovannolaia) durae herman was originally described from kenya, the type host being the common turkey, meleagris gallopavo linnaeus. there are no field records of this association outside of africa, where the parasite, herein reported from another introduced and domesticated bird (the common peafowl, pavo cristatus linnaeus), was recently listed from 2 native phasianidae of the genus francolinus. the justification for the present identification is submitted against background data co ... | 1978 | 660569 |
| eimeria tenella: host specificity in gallinaceous birds. | eight species representing 8 genera of gallinaceous birds were used: alectoris graeca; colinus virginianus; coturnix coturnix; gallus gallus; meleagris gallopavo; numidia meleagris; pavo cristatus; phasianus colchicus. three week-old birds were dosed with sporulated oocysts of eimeria tenella beltsville strain. at 4, 24, 48, 72, 96, 120 and 144, and 168 hr after inoculation, 1-3 infected birds and uninoculated controls of each species were killed by cardiac exsanguination. pieces of intestines w ... | 1976 | 1271306 |
| multilocus dna fingerprints in gallinaceous birds: general approach and problems. | multilocus profiles were investigated in five different species of galliformes (ring-necked pheasant phasianus colchicus, indian peafowl pavo cristatus, japanese quail coturnix coturnix japonica, domestic chicken gallus gallus, and red grouse lagopus lagopus scoticus) using two human multilocus probes (33.6 and 33.15) in combination with each of four restriction enzymes (alui, ddei, haeiii or hinfi). all the species show a dna fingerprint-like pattern using at least one restriction enzyme in com ... | 1992 | 1612925 |
| hypervariable minisatellite dna sequences in the indian peafowl pavo cristatus. | we report here for the first time the large-scale isolation of hypervariable minisatellite dna sequences from a non-human species, the indian peafowl (pavo cristatus). a size-selected genomic dna fraction, rich in hypervariable minisatellites, was cloned into charomid 9-36. this library was screened using two multilocus hypervariable probes, 33.6 and 33.15 and also, in a "probe-walking" approach, with five of the peafowl minisatellites initially isolated. forty-eight positively hybridizing clone ... | 1991 | 1674723 |
| [susceptibility of birds other than chickens to infectious laryngotracheitis]. | susceptibility to infectious laryngotracheitis virus was studied in peafowl (pavo cristatus), various species of pheasant (phasianus colchicus, lophura swinhoeii, lophophorus impejanus), guinea-fowl (numida meleagris), canaries (serinus canaria), budgerigars (melopsittacus undulatus) and japanese quail (coturnix coturnic japonica). apart from clinical observations, experiments were evaluated in terms of histopathology, immunofluorescence, serology and recovery of virus. only peafowl and pheasant ... | 1985 | 2990066 |
| [doyle's dysentery (?) in a peacock (pavo cristatus)]. | | 1973 | 4580312 |
| malignant lymphoid neoplasia in a peahen (pavo cristatus). | | 1972 | 4640182 |
| studies on an outbreak of mycoplasma gallisepticum infection among peafowls (pavo cristatus). | | 1972 | 5072745 |
| parasitic acarina from indian peafowl. | | 1971 | 5153506 |
| vertebrate host specificity and experimental vectors of plasmodium (novyella) kempi sp. n. from the eastern wild turkey in iowa. | vertebrate host specificity, experimental laboratory vectors, and a description of plasmodium (novyella) kempi sp. n. from eastern wild turkeys (meleagris gallopavo silvestris vieillot) in iowa are presented. plasmodium kempi is infective for domestic turkeys, bobwhites (colinus virginianus), chukars (alectoris graeca), guinea fowl (numida meleagris), peacocks (pavo cristatus), and canaries (serinus canaria), produces a transient infection in mallards (anas platyrhynchos) and domestic geese (ans ... | 1983 | 6644918 |
| cryptococcus neoformans var neoformans isolated from droppings of captive birds in nigeria. | the yeast, cryptococcus neoformans, was found in apparently healthy birds at the jos wildlife park and zoo in jos, nigeria. cryptococcus neoformans var neoformans was isolated from feces of four captive bird species. five isolates belonged to serotype a while two were serotype d. serotype a of c. neoformans was isolated from a white face duck (dendrocygna viduata), eagle owl (bubo africanus cinerascene) and peacock (pavo cristatus). the other two (serotype d), were isolated from a spotted eagle ... | 1997 | 9131573 |
| amyloid arthropathy in an indian peafowl. | | 1998 | 9491530 |
| orbital lymphosarcoma associated with reticuloendotheliosis virus in a peafowl. | lymphosarcoma associated with infection by avian reticuloendotheliosis virus was diagnosed in an indian peafowl with exophthalmia and exposure keratitis. exenteration of the orbit was complicated by a profound oculocardiac reflex and extensive hemorrhage during surgery. orbital bleeding was controlled by direct pressure, electrocautery, topical administration of bovine thrombin, and application of sterile gelatin sponges and oxidized regenerated cellulose. a blood transfusion was also performed. ... | 1998 | 9702227 |
| vision in the peafowl (aves: pavo cristatus). | the visual sense of the indian blue-shouldered peafowl pavo cristatus was investigated with respect to the spectral absorption characteristics of the retinal photoreceptors, the spectral transmittance of the ocular media and the topographic distribution of cells in the retinal ganglion cell layer. microspectrophotometry revealed a single class of rod, four spectrally distinct types of single cone and a single class of double cone. in the case of the single cone types, which contained visual pigm ... | 2002 | 12432014 |
| protein inhibitors of serine proteinases: role of backbone structure and dynamics in controlling the hydrolysis constant. | standard mechanism protein inhibitors of serine proteinases bind as substrates and are cleaved by cognate proteinases at their reactive sites. the hydrolysis constant for this cleavage reaction at the p(1)-p(1)' peptide bond (k(hyd)) is determined by the relative concentrations at equilibrium of the "intact" (uncleaved, i) and "modified" (reactive site cleaved, i*) forms of the inhibitor. the ph dependence of k(hyd) can be explained in terms of a ph-independent term, k(hyd) degrees, plus the pro ... | 2003 | 12731859 |
| green fluorescent protein gene-transfected peafowl somatic cells participate in the development of chicken embryos. | this study was performed to investigate whether the embryonic somatic cells are capable of reconstituting and participating in the embryonic development of chickens to produce chimeras. in order to track the migration behavior of the donor cells, a cell line, originally isolated from an indian peafowl embryo, was fluorescent-labeled by transfection of the cells with enhanced green fluorescent protein (gfp) and neomycin resistant (neo) genes prior to injection into the stage x blastoderm of white ... | 2004 | 14743513 |
| survey of peafowl (pavo cristatus) for potential pathogens at three michigan zoos. | blood samples collected from 31 free-roaming peafowl from three zoos in michigan were tested serologically. antibody titers were present against avian adenovirus and bordetella avium in 19.3% and 61.3% of the samples, respectively. serum plate agglutination tests were positive for mycoplasma meleagridis and mycoplasma synoviae in 3.2% and 38.7% of the samples, respectively. all birds were seronegative for avian influenza, newcastle disease virus, west nile virus, mycoplasma gallisepticum, salmon ... | 2003 | 15077714 |
| karyotypic evolution in the galliformes: an examination of the process of karyotypic evolution by comparison of the molecular cytogenetic findings with the molecular phylogeny. | to define the process of karyotypic evolution in the galliformes on a molecular basis, we conducted genome-wide comparative chromosome painting for eight species, i.e. silver pheasant (lophura nycthemera), lady amherst's pheasant (chrysolophus amherstiae), ring-necked pheasant (phasianus colchicus), turkey (meleagris gallopavo), western capercaillie (tetrao urogallus), chinese bamboo-partridge (bambusicola thoracica) and common peafowl (pavo cristatus) of the phasianidae, and plain chachalaca (o ... | 2004 | 15218250 |
| isolation of avian infectious bronchitis coronavirus from domestic peafowl (pavo cristatus) and teal (anas). | coronavirus-like viruses, designated peafowl/china/lkq3/2003 (pf/ch/lkq3/03) and teal/china/ldt3/2003 (tl/ch/ldt3/03), were isolated from a peafowl and a teal during virological surveillance in guangdong province, china. partial genomic sequence analysis showed that these isolates had the s-3-m-5-n gene order that is typical of avian coronaviruses. the spike, membrane and nucleocapsid protein genes of pf/ch/lkq3/03 had >99 % identity to those of the avian infectious bronchitis coronavirus h120 v ... | 2005 | 15722532 |
| [molecular cloning of activin betaa subunit mature peptide from peafowl and its application in taxonomy and phylogeny]. | the sequences of activin gene betaa subunit mature peptide have been amplified from white peafowl, blue peafowl (pavo cristatus) and green peafowl (pavo muticus) genomic dna by polymerase chain reaction (pcr) with a pair of degenerate primers. the target fragments were cloned into the vector pmd18-t and sequenced. the length of activin gene betaa subunit mature peptide is 345bp, which encoded a peptide of 115 amino acid residues. sequence analysis of activin gene betaa subunit mature peptide dem ... | 2005 | 15843351 |
| characterisation of peacock (pavo cristatus) mitochondrial 12s rrna sequence and its use in differentiation from closely related poultry species. | 1. poaching of peacocks, the national bird of india, is illegal. people kill this beautiful pheasant bird for tail feathers and mix the meat with chicken or turkey. differentiation of the meat of these species is essential in order to address the ambiguity about the origin of the sample. 2. the present study was carried out to investigate the use of polymerase chain reaction-restriction fragment length polymorphism (pcr-rflp) of mitochondrial 12s rrna gene for identification of these species. 3. ... | 2007 | 17453807 |
| traditional knowledge on zootherapeutic uses by the saharia tribe of rajasthan, india. | the present zootherapeutic study describes the traditional knowledge related to the use of different animals and animal-derived products as medicines by the saharia tribe reside in the shahabad and kishanganj panchayat samiti's of baran district of rajasthan, india. a field survey was conducted from april to june 2006 by performing interview through structured questionnaire with 21 selected respondents, who provided information regarding use of animals and their products in folk medicine. a tota ... | 2007 | 17547781 |
| cutaneous form of pox infection among captive peafowl (pavo cristatus) chicks. | the present study was carried out to investigate the epidemiology and lesions of avian pox in captive peafowl chicks. overall values of morbidity, mortality and case fatality were 45.2%, 27.1% and 60.0%, respectively. the chicks of 9 to 12 weeks of age showed a significantly (p<0.001) higher prevalence rate than other age groups. the morbidity and mortality due to avian pox in peafowl chicks was significantly (p<0.001) reduced when kept in mosquito-proof cages and hatched under broody chicken he ... | 2009 | 19156582 |
| pathotyping of a newcastle disease virus isolated from peacock (pavo cristatus). | this report describes newcastle disease in peacock and the isolation and characterization of the virus. the virus had an intracerbral pathogenicity index of 1.71 and mean death time of 47 h. the isolate had multiple basic amino acids at the fusion protein cleavage site sequence ((110)ggrrqrrfig(119)) with a phenylalanine at residue 117. biological and molecular characterization revealed that the virus is velogenic. phylogenetic analysis placed the isolate in genotype ii. | 2010 | 19763869 |
| hematologic and plasma biochemical reference values in indian peafowl (pavo cristatus). | blood samples were collected from captive, adult, clinically normal indian peafowl (pavo cristatus) for hematologic and plasma biochemical analyses. hematologic parameters investigated were total red blood cell count, hemoglobin, packed cell volume, fibrinogen, mean cell volume, mean cell hemoglobin, mean cell hemoglobin concentration, total white blood cell count, differential white blood cell count, and thrombocyte count. plasma biochemical parameters investigated were alanine aminotransferase ... | 2010 | 20806654 |
| eimeria pavoaegyptica sp. nov. (apicomplexa: eimeriidae) in faeces of indian peacocks, pavo cristatus linnaeus, 1758 (galliformes: phasianidae) from egypt. | coprological examination of 15 indian peacocks, pavo cristatus, revealed the presence of a coccidium species of the genus eimeria, which apparently represents a previously undescribed species. sporulation is exogenous and fully developed oocysts of eimeria pavoaegyptica sp. nov. are ellipsoidal, with a dimension of 15 (13-16) × 12 (10-12.9) microm and with a shape index of 1.25 (1-1.3). the sporulated oocysts have no micropyle but enclose one large rectangular-shaped polar granule and an oocyst ... | 2010 | 21225191 |
| the peacock's train (pavo cristatus and pavo cristatus mut. alba) ii. the molecular parameters of feather keratin plasticity. | thermal activation analysis of plastic deformation of peacock tail feathers, by temperature changes and stress relaxation, gave for the keratin cortex an activation enthalpy of 1.78 ± 0.89?ev and an activation volume of 0.83 ± 0.13?nm³, for both the blue and the white subspecies. these values suggest that breaking of electrostatic bonds is responsible for plasticity in feather keratin. these might be bonds between keratin and nonkeratinous matrix or keratin-keratin cross-links. the mechanical pr ... | 2011 | 21404446 |
| pharmacokinetics of tramadol hydrochloride and its metabolite o-desmethyltramadol in peafowl (pavo cristatus). | tramadol is a centrally acting opiate analgesic that has not been well studied in avian species. tramadol and its metabolites exert their effects at multiple sites, including opiate (mu, kappa, and delta), adrenergic (alpha-2), and serotonin (5ht) receptors. this multi-receptor mode of action is advantageous for avian patients because the mechanisms for analgesia have not been fully elucidated in all species. the objective of this study was to document the pharmacokinetics of tramadol and its ac ... | 2010 | 21370649 |
| the peacock's train (pavo cristatus and pavo cristatus mut. alba) i. structure, mechanics, and chemistry of the tail feather coverts. | the feathers in the train of the peacock serve not for flying but for sexual display. they are long, slender beams loaded in bending by their own weight. an outer circular conical shell, the cortex, is filled by a closed foam of 7.6% relative density, the medulla, both of feather keratin. outer diameter and thickness of the cortex decrease linearly from the body toward the tip. this self-similar geometry leads to a division of labor. the cortex (longitudinal young's modulus 3.3 gpa, transverse m ... | 2010 | 20853418 |
| keratin homogeneity in the tail feathers of pavo cristatus and pavo cristatus mut. alba. | the keratin structure in the cortex of peacocks' feathers is studied by x-ray diffraction along the feather, from the calamus to the tip. it changes considerably over the first 5 cm close to the calamus and remains constant for about 1m along the length of the feather. close to the tip, the structure loses its high degree of order. we attribute the x-ray patterns to a shrinkage of a cylindrical arrangement of β-sheets, which is not fully formed initially. in the final structure, the crystalline ... | 2010 | 20637873 |
| isolation and identification of highly pathogenic avian influenza virus subtype h5n1 in peafowl (pavo cristatus). | an outbreak of highly pathogenic avian influenza (hpai) virus subtype h5n1 was first diagnosed in a "backyard" flock of peafowl (pavo cristatus) raised on palace premises in the kingdom of saudi arabia in december 3, 2007. the flock consisted of 40 peafowl, and their ages ranged from 3 to 5 years old. affected birds suffered from depression, anorexia, and white diarrhea. four dead birds were submitted for hpai diagnosis at the central veterinary diagnostic laboratory in riyadh. brain and liver t ... | 2010 | 20521659 |
| molecular characterization of cryptosporidium spp. from fecal samples of birds kept in captivity in brazil. | the aim of this study was to determine the prevalence of cryptosporidium species and genotypes in birds kept in captivity in brazil. a total of 966 samples from 18 families of birds was collected and stored in 5% potassium dichromate solution at 4 degrees c until processing. oocysts were purified in sheather sugar solution following extraction of genomic dna. molecular analyses were performed using nested-pcr for amplification of fragments of the 18s subunit of rrna gene and of the actin gene. a ... | 2009 | 19683397 |
| [leukosis in captive wild birds]. | among 2589 captive wild birds, examined between 1974 and 1983, we found leukosis in 26 birds belonging to 13 different species and five orders. we diagnosed lymphoid leukosis in 11 birds (two melopsittacus undulatus, two psittacus erithacus one platycerus eximius, one columba livia, one streptopelia decaocto, one polyplectron bicalcaratum, one pavo cristatus, one aptenodytes patachonia and one finch, species unknown), myeloid leukosis in 14 (nine melopsittacus undulatus, two agapomis personata f ... | 1984 | 18766880 |
| identification of shed or plucked origin of indian peafowl (pavo cristatus) tail feathers: preliminary findings. | indian peafowl (pavo cristatus) tail covert feathers were studied to investigate the difference between shed and plucked feathers in the context of wildlife offence cases involving the killing of the indian national bird for the purpose of plucking feathers. plucked feathers were distinguished from shed feathers by examining their roots under low magnification of a stereoscopic microscope. a chemical test to show the presence of blood on the roots of plucked feathers was used to corroborate the ... | 2008 | 18700500 |
| intestinal protozoan parasites with zoonotic potential in birds. | the aim of this study was to evaluate the occurrence of potentially zoonotic intestinal protozoan infections in exotic and wildlife brazilian birds. fecal samples from 207 birds of 45 species were examined. infections by balantidium sp., entamoeba sp., and blastocystis sp. were observed in 17 individuals (8.2%) of gnorimopsar chopi, oryzoborus angolensis, sporophila caerulescens, ramphastos toco, aratinga leucophtalmus, and pavo cristatus. | 2008 | 18663476 |
| plasma uric acid, creatinine, and urea nitrogen concentrations after whole blood administration via the gastrointestinal tract in domestic pigeons (columba livia). | to determine if blood administered to pigeons by gavage tube would simulate gastrointestinal hemorrhage in a noncarnivorous avian model, be digested in the gastrointestinal tract, and subsequently alter concentrations of plasma urea nitrogen, creatinine, or uric acid, blood from common peacocks (pavo cristatus) was administered by gavage tube to 5 healthy domestic pigeons (columba livia) at doses of 0.5, 1.0, 2.0, 4.0, and 8.0 ml/kg. no significant difference in plasma concentrations of urea nit ... | 2007 | 18065134 |
| variation in the peacock's train shows a genetic component. | female peafowl (pavo cristatus) show a strong mating preference for males with elaborate trains. this, however, poses something of a paradox because intense directional selection should erode genetic variation in the males' trains, so that females will no longer benefit by discriminating among males on the basis of these traits. this situation is known as the 'lek paradox', and leads to the theoretical expectation of low heritability in the peacock's train. we used two independent breeding exper ... | 2009 | 17922297 |
| complete mitochondrial genome of the indian peafowl (pavo cristatus), with phylogenetic analysis in phasianidae. | pavo cristatus, known as the indian peafowl, is endemic to india and sri lanka and has been domesticated for its ornamental and food value. however, its phylogenetic status is still debated. here, to clarify the phylogenetic status of p. cristatus within phasianidae, we analyzed its mitochondrial genome (mtdna). the complete mitochondrial dna (mtdna) genome was determined using 34 pairs of primers. our data show that the mtdna genome of p. cristatus is 16,686 bp in length. molecular phylogenetic ... | 2015 | 24409883 |
| molecular characterization and biological activity of interferon-α in indian peafowl (pavo cristatus). | interferon-α (ifn-α) genes have been cloned from a variety of animals, but information about indian peafowl pavo cristatus ifn-α (pcifn-α) has not been reported. in this study, a pcifn-α gene was amplified, which encoded a protein of 193 amino acids with a 26-amino acid signal peptide sharing 72.16-95.70% identity with other avians in aves. after expression in prokaryote, purification, and renaturation, pcifn-α was analyzed for its physicochemical property and antiviral activity. cytopathic inhi ... | 2017 | 28783371 |
| eye blinking in an avian species is associated with gaze shifts. | even when animals are actively monitoring their environment, they lose access to visual information whenever they blink. they can strategically time their blinks to minimize information loss and improve visual functioning but we have little understanding of how this process operates in birds. this study therefore examined blinking in freely-moving peacocks (pavo cristatus) to determine the relationship between their blinks, gaze shifts, and context. peacocks wearing a telemetric eye-tracker were ... | 2016 | 27572457 |
| offspring sex ratio is related to paternal train elaboration and yolk corticosterone in peafowl. | several recent experimental studies have provided strong evidence for the ability of birds to manipulate the sex ratio of their offspring prior to laying. using a captive population of peafowl (pavo cristatus), we tested experimentally the effects of paternal attractiveness on offspring sex ratio, and related sex ratio deviations to egg-yolk concentrations of testosterone, 17beta-estradiol and corticosterone. when females were mated to males whose attractiveness had been experimentally reduced b ... | 2005 | 17148167 |
| [screening of peafowl microsatellite primers and analysis of genetic diversity]. | the applicability of chicken microsatellite primers to peafowl population was analyzed in the present paper, and the results showed 14 of 29 pairs of microsatellite primers from chicken could amplify peafowl dna and produce specific allele patterns. a mean of 1.71 alleles was found for each locus. seven pairs were highly polymorphic, and mcw0080 and mcw0098 were ideal markers for peafowl. genetic diversity analysis within and between the green peafowl and the blue peafowl populations demonstrate ... | 2006 | 17035182 |
| thermoregulatory postures limit antipredator responses in peafowl. | many animals inhabit environments where they experience temperature fluctuations. one way in which animals can adjust to these temperature changes is through behavioral thermoregulation. however, we know little about the thermal benefits of postural changes and the costs they may incur. in this study, we examined the thermoregulatory role of two postures, the head-tuck and leg-tuck posture, in peafowl (pavo cristatus) and evaluated whether the head-tuck posture imposes a predation cost. the head ... | 2018 | 29305466 |
| sudden death of an indian peafowl (pavo cristatus) at a zoo due to non-pigmented serratia marcescens infection. | a 16-year-old female indian peafowl (pavo cristatus) died two days after recognition of conjunctivitis in the right eye, anorexia and depression. gross necropsy revealed a thick pseudomembrane under the eyelid and hydropericardium. histopathological examination revealed hepatocellular necrosis, sinusoidal and vascular congestion and infiltrated inflammatory cells. infiltration by inflammatory cells was noted in the epicardium. the lungs had mild interstitial pneumonia with the extensive congesti ... | 2017 | 29081475 |
| correlations between heterozygosity and measures of genetic similarity: implications for understanding mate choice. | there is currently considerable interest in testing the effects of genetic compatibility and heterozygosity on animal mate preferences. evidence for either effect is rapidly accumulating, although results are not always clear-cut. however, correlations between mating preferences and either genetic similarity or heterozygosity are usually tested independently, and the possibility that similarity and heterozygosity may be confounded has rarely been taken into account. here we show that measures of ... | 2006 | 16599932 |
| maynard smith: amplifying the reasons for signal reliability. | one of the many questions to which john maynard smith contributed was that of why most animal signals are reliable. he initially rejected the "handicap" argument but gradually accepted it, a process i briefly describe. this episode illustrated his preference for mathematical models over verbal ones, and the generosity with which he could change his mind. even after accepting that some signals are reliable because of their strategic costs, he argued for a pluralistic approach to signal reliabilit ... | 2006 | 16225891 |
| molecular insight into a wildlife crime: the case of a peafowl slaughter. | we report a recent case in which a wildlife warden had suspected that some people had killed and cooked a peacock. cooked meat, intestine of bird and the wooden block used for chopping were seized from the site of crime and forwarded to our laboratory for dna testing. mitochondrial cytochrome b sequence analysis revealed that the cooked meat and remnants of the bird were of a chicken, but the dna obtained from the wooden block was of an indian peafowl (peacock) testifying that the wooden choppin ... | 2005 | 16182969 |
| use of pavo cristatus feather extract for the better management of snakebites: neutralization of inflammatory reactions. | in indian traditional medicine, peacock feather in the form of ash (bhasma) or water extract are used against snakebite and to treat various problems associated with lungs. this study was aimed to evaluate the water extract of peacock feather (pcf) against the local tissue damage caused due to snakebite. pcf water extract showed inhibition towards phospholipase a2 enzyme activity from snake venom (naja naja and vipera russelii), inflammatory fluids (synovial, pleural, ascites) and normal serum i ... | 2005 | 15894132 |
| complete nucleotide sequence of the coturnix chinensis (blue-breasted quail) mitochondrial genome and a phylogenetic analysis with related species. | coturnix chinensis (blue-breasted quail) has been classically grouped in galliformes phasianidae coturnix, based on morphologic features and biochemical evidence. since the blue-breasted quail has the smallest body size among the species of galliformes, in addition to a short generation time and an excellent reproductive performance, it is a possible model fowl for breeding and physiological studies of the coturnix japonica (japanese quail) and gallus gallus domesticus (chicken), which are class ... | 2002 | 12642645 |
| pharmacokinetics of butorphanol delivered with an osmotic pump during a seven-day period in common peafowl (pavo cristatus). | to determine pharmacokinetics of butorphanol delivered via osmotic pumps in common peafowl (pavo cristatus) as a method for analgesic administration to avian species. | 2015 | 26618732 |
| eye and head movements shape gaze shifts in indian peafowl. | animals selectively direct their visual attention toward relevant aspects of their environments. they can shift their attention using a combination of eye, head and body movements. while we have a growing understanding of eye and head movements in mammals, we know little about these processes in birds. we therefore measured the eye and head movements of freely behaving indian peafowl (pavo cristatus) using a telemetric eye-tracker. both eye and head movements contributed to gaze changes in peafo ... | 2015 | 26486363 |
| the amino acid sequence of monal pheasant lysozyme and its activity. | the amino acid sequence of monal pheasant lysozyme and its activity were analyzed. carboxymethylated lysozyme was digested with trypsin and the resulting peptides were sequenced. the established amino acid sequence had one amino acid substitution at position 102 (arg to gly) comparing with indian peafowl lysozyme and four amino acid substitutions at positions 3 (phe to tyr), 15 (his to leu), 41 (gln to his), and 121 (gln to his) with chicken lysozyme. analysis of the time-courses of reaction usi ... | 1998 | 9836434 |
| clinical perspectives of intravenous ketamine anaesthesia in peafowl (pavo cristatus). | a total of 29 peafowl (pavo cristatus), rectified surgically for infraorbital abscesses (n = 22), lacerated wounds (n = 4), and fractures of tibia (n = 2) and radius (n = 1), were anaesthetized by the intravenous administration of ketamine hydrochloride (inj. calypsol, gedeon richter, hungary) in a dose of 15 20 mg/kg body weight. divided doses (10 mg + 5 mg + 5 mg) were used with an interval of 1-2 min. no premedication was undertaken in any of the birds. anaesthesia lasted for about 15 min and ... | 1996 | 9055460 |
| classification of peacock feather reflectance using principal component analysis similarity factors from multispectral imaging data. | iridescent structural colors in biology exhibit sophisticated spatially-varying reflectance properties that depend on both the illumination and viewing angles. the classification of such spectral and spatial information in iridescent structurally colored surfaces is important to elucidate the functional role of irregularity and to improve understanding of color pattern formation at different length scales. in this study, we propose a non-invasive method for the spectral classification of spatial ... | 2015 | 25969062 |
| distribution of chewing lice upon the polygynous peacock pavo cristatus. | an opportunistic survey of louse distribution upon the peacock pavo cristatus was undertaken following a cull of 23 birds from an english zoo. after complete skin and feather dissolution, 2 species of lice were retrieved, goniodes pavonis and amyrsidea minuta. the distribution of both louse species could be described by a negative binomial model. the significance of this is discussed in relation to transmission dynamics of lice in the atypical avian mating system found in the peacock, which invo ... | 1996 | 8604123 |
| [foreign-body related esophagus obstruction in a peacock (pavo cristatus l. 1758)]. | a coil of metal wire was diagnosed by x-ray closely to the heartbasis in an eight-year-old peacock. described are anesthesia and successful surgical removal of the coiled wire which had partially pierced the wall of the oesophagus. means of post-surgical drug and dietetic therapy are discussed. | 1986 | 3824366 |
| endoparasitic infections in indian peacocks (pavo cristatus) of veterinary college campus, mathura. | a survey was made to determine the prevalence of endoparasites in free range blue peacocks living in and around the premises of college of veterinary sciences and animal husbandry, mathura. faecal samples of peacocks were collected randomly and brought to the divisional laboratory for faecal sample examination. during the coprological examination, eggs and oocysts of cestodes and coccidia belonging to eimeria and isospora species were identified, respectively based on the morphology and micromet ... | 2013 | 24431536 |
| two new species of eimeria from peacocks (pavo cristatus) in saudi arabia. | fifteen fecal samples from peacocks (pavo cristatus) in saudi arabia contained oocysts of eimeria riyadhae n. sp. in two peacocks and oocysts of e. arabica n. sp. in one peacock. sporulated oocysts of eimeria riyadhae are ellipsoidal, 27-30.5 x 20.5-25 (28.8 +/- 1.3 x 22.4 +/- 1.6) micron, with a two-layered wall and bilobed polar body, but without a micropyle or residuum. the sporocysts are ovoid, 11-14.5 x 6.5-8 (13.2 +/- 1.2 x 7.2 +/- 0.6) micron with a thick, knob-like stieda body and a resi ... | 1988 | 3199339 |
| through their eyes: selective attention in peahens during courtship. | conspicuous, multicomponent ornamentation in male animals can be favored by female mate choice but we know little about the cognitive processes females use to evaluate these traits. sexual selection may favor attention mechanisms allowing the choosing females to selectively and efficiently acquire relevant information from complex male display traits and, in turn, may favor male display traits that effectively capture and hold female attention. using a miniaturized telemetric gaze-tracker, we sh ... | 2013 | 23885088 |
| experimental inoculation of bfdv-positive budgerigars (melopsittacus undulatus) with two mycobacterium avium subsp. avium isolates. | beak and feather disease virus- (bfdv-) positive (naturally infected) but clinically healthy budgerigars (melopsittacus undulatus) were inoculated with two isolates of mycobacterium avium subsp. avium isolated from naturally infected golden pheasant (chrysolophus pictus) and peafowl (pavo cristatus). during a period of more than two months after inoculation, samples of cloacal and crop swabs, faeces, and blood were obtained for bfdv and mycobacterium avium testing with pcr. birds were euthanized ... | 2014 | 24738057 |
| ascaridiasis in peafowl pavo cristatus (phasianidae) due to ascaridia galli schrank, 1788. | twelve white peafowl (pavo cristatus) affected by an outbreak of an intestinal disease were referred for more detailed examination at the universidade estadual de santa cruz-ba, brazil. during the course of the disease, peachicks were severely affected, with enteric signs such as diarrhea plus dehydration, decreased feed intake and progressive weight loss. after examination, 8 of 12 samples (66.6%) presented single or mixed nematode infection and ascarid eggs were the most frequent finding on fe ... | 2012 | 23082523 |
| comparative efficacy and pathogenicity of keratinophilic soil fungi against culex quinquefasciatus larvae. | out of seven fungal species belonging to four genera isolated from pond and wallow soils using feathers of pavo cristatus as bait, four species viz., aspergillus flavus, aspergillus niger, chrysosporium pseudomerdarium and trichophyton ajelloi were most frequent. chrysosporium and trichophyton spp. were more pathogenic on culex quinquefasciatus larvae than aspergillus and penicillium. the bioefficacy tests conducted as per the protocol of world health organization and the lc(50) values calculate ... | 2010 | 23100844 |
| de novo assembly of the indian blue peacock (pavo cristatus) genome using oxford nanopore technology and illumina sequencing. | the indian peafowl (pavo cristanus) is native to south asia and is the national bird of india. here we present a draft genome sequence of the male blue peacock using illumina and oxford nanopore technology (ont). | 2019 | 31077316 |
| characterization of extraintestinal escherichia coli isolated from a peacock (pavo cristatus) with colisepticemia. | extraintestinal infections by avian pathogenic strains of escherichia coli (apec) are commonly reported in poultry, but there is little information on infections by apec in other bird species. here we report on the characterization of extraintestinal e. coli isolated from a domesticated peacock, from the south of brazil, that died of colisepticemia. necropsy examination revealed congested liver, hypertrophied kidneys, peritonitis, severe typhlitis suggestive of coligranuloma, pneumonia, and airs ... | 2012 | 22856209 |
| genetic characterization of continually evolving highly pathogenic h5n6 influenza viruses in china, 2012-2016. | h5n6 is a highly pathogenic avian influenza (hpai) and a zoonotic disease that causes recurring endemics in east asia. at least 155 h5n6 outbreaks, including 15 human infections, have been reported in china. these repeated outbreaks have increased concern that the h5n6 virus may cross over to humans and cause a pandemic. in february, 2016, peafowls in a breeding farm exhibited a highly contagious disease. post-mortem examinations, including rt-pcr, and virus isolation, confirmed that the highly ... | 2017 | 28293218 |
| pathologic and molecular characterization of histomoniasis in peafowl ( pavo cristatus). | histomonas meleagridis is a flagellate protozoan organism that can cause severe necrotizing typhlitis and hepatitis in gallinaceous birds. peafowl ( pavo spp.) have been shown to be susceptible to histomoniasis in experimental settings, but there are few reports of natural histomoniasis in this species. a retrospective study of the archived cases at 2 veterinary diagnostic laboratories in the united states yielded 5 cases of peafowl with gross and histologic findings characteristic of histomonia ... | 2017 | 28065124 |
| molecular characterization, isolation, pathology and pathotyping of peafowl (pavo cristatus) origin newcastle disease virus isolates recovered from disease outbreaks in three states of india. | disease outbreak investigations were carried out in three states of northern india namely haryana (rewari), uttar pradesh (noida) and delhi, where a total of 110 indian peafowls (pavo cristatus) showed sudden onset of nervous signs and died within a period of two weeks during june, 2012. the f (fusion) gene-based rt-pcr detection of newcastle disease virus (ndv) in affected tissues confirmed the presence of the virus. three ndv isolates were selected (one from each area under investigation) and ... | 2016 | 27724072 |
| characterization and sequencing of a genotype xii newcastle disease virus isolated from a peacock (pavo cristatus) in peru. | here, we report the first complete sequence and biological characterization of a newcastle disease virus (ndv) isolated from a peacock in south america (ndv/peacock/peru/2011). this isolate, classified as genotype xii in class ii, highlights the need for increased surveillance of noncommercial avian species. | 2015 | 26227592 |
| complete genome sequence of a newcastle disease virus isolated from wild peacock (pavo cristatus) in india. | we report here the complete genome sequence of a newcastle disease virus (ndv) isolated from a wild peacock. phylogenetic analysis showed that it belongs to genotype ii, class ii of ndv strains. this study helps to understand the ecology of ndv strains circulating in a wild avian host of this geographical region during the outbreak of 2012 in northwest india. | 2014 | 24903868 |
| detection and molecular characterization of newcastle disease virus in peafowl (pavo cristatus) in haryana state, india. | present study was undertaken to investigate the cause of deaths of peafowls in haryana state. in total, 145 birds were sick and 28 birds were reported dead during july to september 2012. some of the sick birds were showing signs of shaking of heads, torticollis and paresis. blood and cloacal swab samples from sick birds along with brain and intestinal tissues from dead birds were collected for further investigation. although post-mortem examination showed no typical lesions of newcastle disease ... | 2013 | 24426301 |
| complete genome sequence of a velogenic neurotropic avian paramyxovirus 1 isolated from peacocks (pavo cristatus) in a wildlife park in pakistan. | avian paramyxovirus serotype 1 (apmv-1) was isolated from an acute and highly contagious outbreak in peacocks (pavo cristatus) in a wildlife park in pakistan. a velogenic neurotropic form of apmv-1 caused a 100% case fatality rate and killed 190 peacocks within a week. biological and serological characterizations showed features of a velogenic strain of apmv-1, and these results were further confirmed by sequence analysis of the cleavage site in the fusion protein. the complete genome of one of ... | 2012 | 23118447 |
| first report of toxoplasma gondii seroprevalence in peafowls in yunnan province, southwestern china. | toxoplasma gondii is an intracellular protozoan parasite infecting almost all warm-blooded animals, including birds, with a worldwide distribution. surveys of t. gondii infection in wild birds have been reported extensively in the world, but little is known of t. gondii infection in peafowls worldwide. this study was performed to determine the seroprevalence of t. gondii infection in peafowls in yunnan province, southwestern china. | 2012 | 22992281 |
| pathological and molecular studies of the renal trematode paratanaisia bragai in indian peafowls (pavo cristatus). | endoparasitic diseases are commonly encountered in free-ranging birds. although not all endoparasites cause disease, persistent infection with large numbers of parasites almost always affects normal physiological functions, leading to deleterious effects on the host. this paper describes the anatomopathological alterations caused by the renal trematode paratanaisia bragai in indian peafowl (n = 3) and examines the phylogeny of these and related parasites. peafowl from forests in and around the b ... | 2018 | 29351075 |
| safety of fenbendazole in common peafowl (pavo cristatus). | the present study was undertaken to find out the safety levels of fenbendazole in common peafowl. this bird, raised on aviaries and zoos, can be severely parasitized with ascaridia galli (enteric worms) and syngamus trachea (gapeworm) along with other parasitic worms. fenbendazole is a highly effective benzimidazole-class anthelmintic in animals. the objective of this work was to provide target animal safety data in young peafowl and to demonstrate reproductive safety in adult birds. during the ... | 2018 | 29348098 |
| molecular cloning and functional analysis of peafowl (pavo cristatus) toll-like receptor 7. | in order to clone the peafowl (pavo cristatus) toll-like receptor 7 (tlr7) gene and study its biological function, the peafowl tlr7 coding sequences (cds) were amplified by pcr of cdna from the whole spleen of peafowl. the full-length sequence of the peafowl tlr7 gene cds is 3,141 bp and encodes a 1,046-amino acid protein with a classic tlr composition of 16 leucine-rich repeats (lrr). insertions of amino acids were found at position 15 of lrr2, lrr5, lrr7, lrr9, lrr11, lrr12, lrr14, and lrr15; ... | 2018 | 29053867 |
| systemic histomoniasis in a leucistic indian peafowl (pavo cristatus) from southern brazil. | the pathological and molecular findings associated with histomonas meleagridis are described in a leucistic indian peafowl (pavo cristatus) from southern brazil. the most significant gross findings were multifocal necrotizing hepatitis and diphtheric typhlitis. histopathologic evaluation of the liver, ceca, kidney, spleen, and small intestine revealed systemic histomoniasis (sh) associated with intralesional and intravascular accumulations of histomonad organisms consistent with h. meleagridis. ... | 2017 | 28957005 |
| incidences of mortality of indian peafowl pavo cristatus due to pesticide poisoning in india and accumulation pattern of chlorinated pesticides in tissues of the same species collected from ahmedabad and coimbatore. | incidences of mortality of indian peafowl pavo cristatus, the national bird (schedule i indian wild life protection act 1972), are rampant in india. between january 2011 and march 2017, around 550 peafowl in 35 incidences were reported dead across the country. due to the non-availability of fresh carcases, poisoning could not be confirmed. birds which died due to kite string injuries in ahmedabad (15) and accidents in coimbatore (5) were tested for residues of chlorinated pesticides, namely hexa ... | 2018 | 29569206 |
| evidence of exposure to usuv and wnv in zoo animals in france. | west nile virus (wnv) and usutu virus (usuv) are zoonotic arboviruses. these flaviviruses are mainly maintained in the environment through an enzootic cycle involving mosquitoes and birds. horses and humans are incidental, dead-end hosts, but can develop severe neurological disorders. nevertheless, there is little data regarding the involvement of other mammals in the epidemiology of these arboviruses. in this study, we performed a serosurvey to assess exposure to these viruses in captive birds ... | 2020 | 33266071 |
| selective attention in peacocks during assessment of rival males. | males in many species compete intensely for access to females. in order to minimize costly interactions, they can assess their rivals' competitive abilities by evaluating traits and behaviors. we know little about how males selectively direct their attention to make these assessments. using indian peafowl (pavo cristatus) as a model system, we examined how males visually assess their competitors by continuously tracking the gaze of freely moving peacocks during the mating season. when assessing ... | 2017 | 28298468 |
| noise pollution has limited effects on nocturnal vigilance in peahens. | natural environments are increasingly exposed to high levels of noise pollution. noise pollution can alter the behavior of animals but we know little about its effects on antipredator behavior. we therefore investigated the impact of noise pollution on vigilance behavior and roost selection in an avian species, peafowl (pavo cristatus), that inhabits urban environments. captive peahens were exposed to noise pollution at night and their vigilance levels and roost selections were monitored. the vi ... | 2016 | 27703863 |
| biomechanics of the peacock's display: how feather structure and resonance influence multimodal signaling. | courtship displays may serve as signals of the quality of motor performance, but little is known about the underlying biomechanics that determines both their signal content and costs. peacocks (pavo cristatus) perform a complex, multimodal "train-rattling" display in which they court females by vibrating the iridescent feathers in their elaborate train ornament. here we study how feather biomechanics influences the performance of this display using a combination of field recordings and laborator ... | 2016 | 27119380 |
| artificial light pollution increases nocturnal vigilance in peahens. | artificial light pollution is drastically changing the sensory environments of animals. even though many animals are now living in these changed environments, the effect light pollution has on animal behavior is poorly understood. we investigated the effect of light pollution on nocturnal vigilance in peahens (pavo cristatus). captive peahens were exposed to either artificial lighting or natural lighting at night. we employed a novel method to record their vigilance behavior by attaching acceler ... | 2015 | 26339552 |
| the metabolic cost of walking on an incline in the peacock (pavo cristatus). | altering speed and moving on a gradient can affect an animal's posture and gait, which in turn can change the energetic requirements of terrestrial locomotion. here, the energetic and kinematic effects of locomoting on an incline were investigated in the indian peacock, pavo cristatus. the mass-specific metabolic rate of the indian peacock was elevated on an incline, but this change was not dependent on the angle ascended and the cost of lifting remained similar between the two inclines (+5 and ... | 2015 | 26056619 |
| peafowl antipredator calls encode information about signalers. | animals emit vocalizations that convey information about external events. many of these vocalizations, including those emitted in response to predators, also encode information about the individual that produced the call. the relationship between acoustic features of antipredator calls and information relating to signalers (including sex, identity, body size, and social rank) were examined in peafowl (pavo cristatus). the "bu-girk" antipredator calls of male and female peafowl were recorded and ... | 2014 | 25234902 |
| the elaborate plumage in peacocks is not such a drag. | one of the classic examples of an exaggerated sexually selected trait is the elaborate plumage that forms the train in male peafowl pavo cristatus (peacock). such ornaments are thought to reduce locomotor performance as a result of their weight and aerodynamic drag, but this cost is unknown. here, the effect that the train has on take-off flight in peacocks was quantified as the sum of the rates of change of the potential and kinetic energies of the body (p(com)) in birds with trains and followi ... | 2014 | 25232196 |
| selective attention in peacocks during predator detection. | predation can exert strong selective pressure on the evolution of behavioral and morphological traits in birds. because predator avoidance is key to survival and birds rely heavily on visual perception, predation may have shaped avian visual systems as well. to address this question, we examined the role of visual attention in antipredator behavior in peacocks (pavo cristatus). peacocks were exposed to a model predator while their gaze was continuously recorded with a telemetric eye-tracker. we ... | 2014 | 24253451 |
| how conspicuous are peacock eyespots and other colorful feathers in the eyes of mammalian predators? | colorful feathers have long been assumed to be conspicuous to predators, and hence likely to incur costs due to enhanced predation risk. however, many mammals that prey on birds have dichromatic visual systems with only two types of color-sensitive visual receptors, rather than the three and four photoreceptors characteristic of humans and most birds, respectively. here, we use a combination of multispectral imaging, reflectance spectroscopy, color vision modelling and visual texture analysis to ... | 2019 | 31017903 |
| first report of enterocytozoon bieneusi and cryptosporidium spp. in peafowl (pavo cristatus) in china. | enterocytozoon bieneusi and cryptosporidium spp. are important pathogens causing diarrhea in humans and animals. however, few studies have been conducted on the infection of e. bieneusi and cryptosporidium spp. in peafowl up to now. the purpose of the present study was to determine the prevalence and the involved genotypes of cryptosporidium spp. and e. bieneusi in peafowl in beijing and jiangxi province, china. in total, 258 peafowl fecal samples were collected. overall, both cryptosporidium sp ... | 2019 | 30976510 |
| highly pathogenic and low pathogenic avian influenza h5 subtype viruses in wild birds in ukraine. | there have been three waves of highly pathogenic avian influenza (hpai) outbreaks in commercial, backyard poultry, and wild birds in ukraine. the first (2005-2006) and second (2008) waves were caused by h5n1 hpai virus, with 45 outbreaks among commercial poultry (chickens) and backyard fowl (chickens, ducks, and geese) in four regions of ukraine (ar crimea, kherson, odesa, and sumy oblast). h5n1 hpai viruses were isolated from dead wild birds: cormorants (phalacrocorax carbo) and great crested g ... | 2019 | 31713401 |
| highly pathogenic and low pathogenic avian influenza h5 subtype viruses in wild birds in ukraine. | there have been three waves of highly pathogenic avian influenza (hpai) outbreaks in commercial, backyard poultry, and wild birds in ukraine. the first (2005-2006) and second (2008) waves were caused by h5n1 hpai virus, with 45 outbreaks among commercial poultry (chickens) and backyard fowl (chickens, ducks, and geese) in four regions of ukraine (ar crimea, kherson, odesa, and sumy oblast). h5n1 hpai viruses were isolated from dead wild birds: cormorants (phalacrocorax carbo) and great crested g ... | 2019 | 31131580 |
| epidemiological features of highly pathogenic avian influenza in cameroon. | the epidemiology of avian influenza is unknown in cameroon despite the two outbreaks that occurred in 2006 and 2016-2017, respectively. in order to fill the gap, an attempt was made to provide some basic information on the epidemiology of highly pathogenic avian influenza in cameroon. thus, data were collected from follow-up reports of the second hpai outbreaks prepared by the veterinary health officials of cameroon and sent to the world organisation for animal health (oie). two hpai virus strai ... | 2019 | 30834103 |
| molecular cloning and transcriptional regulation of indian peafowl (pavo cristatus) ifn-α gene. | interferon-α (ifn-α) resists viral infections by triggering the transcription of a diverse range of antiviral ifn-stimulated genes (isgs). however, information about the indian peafowl (pavo cristatus) ifn-α (pcifn-α) has not been reported. in this study, a pcifn-α gene was amplified, which encoded a protein of 193 amino acids with a 26-amino acid signal peptide sharing 72.16-95.70% identity with other avians in aves. after expression in prokaryote, pcifn-α was analyzed for its physicochemical p ... | 2019 | 30701479 |
| comparative analyses of coproscopical techniques to diagnose enteroparasites in a group of captive indian peafowl (pavo cristatus). | captive animals commonly have infections by direct life cycle parasites, since they are easily transmitted between individuals. however, diagnosing these infections in the laboratory is challenging due to the wide variety of parasite, their life stages and to the variety of available diagnose techniques, being difficult to choose the best one. the present study sampled a group of captive indian peafowl (pavo cristatus) from são paulo zoological park foundation, são paulo, brazil, to test and com ... | 2020 | 33128866 |
| hearing in indian peafowl (pavo cristatus): sensitivity to infrasound. | despite the excitement that followed the report of infrasound sensitivity in pigeons 40 years ago, there has been limited followup, with only eleven species of birds having auditory thresholds at frequencies below 250 hz. with such sparse data on low-frequency hearing, there is little understanding of why some birds hear very low frequencies while others do not. to begin to expand the phylogenetic and ecological sample of low-frequency hearing in birds, we determined the behavioral audiogram of ... | 2020 | 33025058 |
| captivity stress influences the dna damage of pavo cristatus under environmental conditions of faisalabad, pakistan. | the surroundings of wild and captive birds are divergent in existence. wild birds inhabiting their natural environment have unlimited resources availability. they face variety of captivity stresses when moved from wild habitat to caged enclosures. the effect of similar captivity stresses on the dna of birds living in cages for longer stretches of time is addressed in this study. the laboratory analysis to investigate dna damage in pavo cristatus was performed using single-cell gel electrophoresi ... | 2020 | 31845253 |
| occurrence of a cryptosporidium xiaoi-like genotype in peafowl (pavo cristatus) in china. | the aim of this study was to survey the cryptosporidium species in peafowls (pavo cristatus) in henan province, china. a total of 143 fecal specimens collected from a breeding farm were tested for cryptosporidium by nested pcr targeting the small subunit rrna (ssu rrna), 70-kda heat shock protein (hsp70), and actin genes of cryptosporidium followed by sequence analysis. only one isolate from an asymptomatic host was obtained, and the isolate differed from a new c. xiaoi-like genotype by one nucl ... | 2019 | 31722067 |
| conjugate eye movements guide jumping locomotion in an avian species. | many animals rely on vision to successfully locomote through their environments. however, our understanding of the interaction between vision and locomotion is surprisingly limited. this study therefore examined the visual mechanisms guiding jumping locomotion in an avian species. it recorded the eye movements of captive indian peafowl (pavo cristatus) as they jumped up onto and down from a perch. peafowl shifted their eyes forward as they were jumping, increasing the degree of binocular overlap ... | 2019 | 31649126 |
| reflections on iridescent neck and breast feathers of the peacock, pavo cristatus. | the blue neck and breast feathers of the peacock are structurally coloured due to an intricate photonic crystal structure in the barbules consisting of a two-dimensionally ordered rectangular lattice of melanosomes (melanin rodlets) and air channels embedded in a keratin matrix. we here investigate the feather coloration by performing microspectrophotometry, imaging scatterometry and angle-dependent reflectance measurements. using previously determined wavelength-dependent refractive indices of ... | 2019 | 30603065 |