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At least 55 records · Page 3Linked to original sources
PubMed1999

A new avian cestode Malika turdi n. spp. Dilepididae: Dipylidiinae) from the golden mountain thrush, Turdus dauma aureus Holandre in Japan.

Malika turdi n. spp. (Dilepididae: Dipyliidinae) was described from the small intestine of a golden mountain thrush, Turdus dauma aureus Holandre, at Ogori City, Fukuoka Prefecture, Japan. By having two rows of rostellar hooks, it resembles M. daviesi, M. himantopodis, M. kalawewaensis, and M. zeylanica, but is readily distinguished from the first three species by having non-spiny cirrus, and from the latter species by having a smaller scolex and more testes. This is the first report of Malika in Japan.

Animals↗
PubMed2002

Adverse effects of acid rain on the distribution of the Wood Thrush Hylocichla mustelina in North America.

Research into population declines of North American bird species has mainly focused on the fragmentation of habitat on the breeding or wintering grounds [Robinson, S. K., Thompson, F. R., Donovan, T. M., Whitehead, D. R. & Faaborg, J. (1995) Science 267, 1987-1990]. In contrast, research into declines of European species has mainly focused on intensification of agriculture [Donald, P. F., Green, R. E. & Heath, M. F. (2001) Proc. R. Soc. London Ser. B 268, 25-29] and the role played by the atmospheric deposition of pollutants, in particular, acid rain [Graveland, J. (1998) Environ. Rev. 6, 41-54]. However, despite widespread unexplained declines of bird populations in regions of heavy wet acid ion deposition [Sauer, J. R., Hines, J. E. & Fallon, J. (2001) The North American Breeding Bird Survey Results and Analysis 1966-2000 (Patuxent Wildlife Research Center, Laurel, MD)], no North American studies have presented evidence linking such widespread terrestrial bird declines to acid rain. To address the question of the role played by acid rain in population declines of eastern North American songbird species, we combine data from several sources. We use a multiple logistic regression model to test for adverse effects of acid rain on the Wood Thrush, while controlling for regional abundance, landscape-level habitat fragmentation, elevation, soil pH, and vegetation. We show a strong, highly significant, negative effect of acid rain on the predicted probability of breeding by this species, and interactions with elevation, low pH soils, and habitat fragmentation that worsen these negative effects. Our results suggest an important role for acid rain in recent declines of some birds breeding in the eastern United States, particularly in high elevation zones with low pH soils, and show the need to consider other large-scale influences, in addition to habitat fragmentation, when addressing bird population declines.

Acid Rain↗
PubMedDate not supplied

Composition of fuel stores and digestive limitations to fuel deposition rate in the long-distance migratory thrush nightingale, Luscinia luscinia.

During their autumn migratory phase, thrush nightingales (Luscinia luscinia) previously starved for 2 d were allowed to refuel under three different ambient temperature conditions (-7 degrees, 7 degrees, and 22 degrees C). During the refueling period, as well as during the preceding control and starvation periods, food intake, body mass, and feces production were monitored. In addition, daily energy expenditure was measured during the refueling period. The compilation of the energy balance during the refueling period revealed an energy density of the deposited tissue of 33.6 kJ g-1. Assuming that the deposited tissue consists of fat and protein exclusively, with energy densities of 39.6 and 5.5 kJ g-1 wet mass, respectively, we estimated the deposited tissue to consist of 82% fat and 18% wet protein (6% dry protein and 12% water). Nitrogen balances during control, starvation, and refueling phases and during a period of prolonged and complete starvation indicated that 5% of the nutrient stores consisted of dry protein. Our results support recent findings that nutrient stores for migration often contain protein in addition to fat and consequently are 15%-25% less energy rich than pure fat stores. These proteins might be stored as muscle or other functional tissue and may be required to support the extra mass of the stores and/or reflect an incapacity of the metabolic machinery to catabolize far exclusively. Fuel deposition rate was positively related with ambient temperature, whereas food intake rate was unaffected by temperature. These results indicate that the rate of fuel deposition is limited by a ceiling in food intake rate; when this ceiling is reached, fuel deposition rate is negatively affected by daily energy expenditure rate. To a certain extent, the ceiling in food intake rate varies depending on feeding conditions over the previous days. These variations in food intake capacity probably reflect the building and breakdown of gut tissues and/or gut enzyme systems and might be insensible and not evolutionary adaptive. Significant energetic costs, however, are probably associated with the maintenance of gut tissues. It is therefore feasible that changes in digestive capacity are regulated and are directed at energy economization.

Analysis of Variance↗
PubMed2003

Magnetic cues and time of season affect fuel deposition in migratory thrush nightingales (Luscinia luscinia).

Bird migration requires high energy expenditure, and long-distance migrants accumulate fat for use as fuel during stopovers throughout their journey. Recent studies have shown that long-distance migratory birds, besides accumulating fat for use as fuel, also show adaptive phenotypic flexibility in several organs during migration. The migratory routes of many songbirds include stretches of sea and desert where fuelling is not possible. Large fuel loads increase flight costs and predation risk, therefore extensive fuelling should occur only immediately prior to crossing inhospitable zones. However, despite their crucial importance for the survival of migratory birds, both strategic refuelling decisions and variation in phenotypic flexibility during migration are not well understood. First-year thrush nightingales (Luscinia luscinia) caught in the early phase of the onset of autumn migration in southeast Sweden and exposed to a magnetic treatment simulating a migratory flight to northern Egypt increased more in fuel load than control birds. By contrast, birds trapped during the late phase of the onset of autumn migration accumulated a high fuel load irrespective of magnetic treatment. Furthermore, early birds increased less in flight-muscle size than birds trapped later in autumn. We suggest that the relative importance of endogenous and environmental factors in individual birds is affected by the time of season and by geographical area. When approaching a barrier, environmental cues may act irrespective of the endogenous time programme.

Adaptation, Physiological↗
PubMed2005

Life-history variation of a neotropical thrush challenges food limitation theory.

Since David Lack first proposed that birds rear as many young as they can nourish, food limitation has been accepted as the primary explanation for variation in clutch size and other life-history traits in birds. The importance of food limitation in life-history variation, however, was recently questioned on theoretical grounds. Here, we show that clutch size differences between two populations of a neotropical thrush were contrary to expectations under Lack's food limitation hypothesis. Larger clutch sizes were found in a population with higher nestling starvation rate (i.e. greater food limitation). We experimentally equalized clutches between populations to verify this difference in food limitation. Our experiment confirmed greater food limitation in the population with larger mean clutch size. In addition, incubation bout length and nestling growth rate were also contrary to predictions of food limitation theory. Our results demonstrate the inability of food limitation to explain differences in several life-history traits: clutch size, incubation behaviour, parental feeding rate and nestling growth rate. These life-history traits were better explained by inter-population differences in nest predation rates. Food limitation may be less important to life history evolution in birds than suggested by traditional theory.

Adaptation, Physiological↗
PubMed2003

A novel murine model of oral candidiasis with local symptoms characteristic of oral thrush.

A conventional and easy method to establish a murine oral candidiasis model, which has not only a stable yeast population in the oral cavity but also symptoms characteristic of oral thrush, was developed by using a sedative agent. Mice were immunosuppressed with prednisolone and were given tetracycline hydrochloride. They were orally infected with 10(6) viable cells of Candida albicans by means of a cotton swab and enough chlorpromazine chloride had been injected to keep them in a sedative state about for 3 hr after inoculation. From day 3 to day 7 post inoculation, 10(5)-10(6) colony forming units of Candida were recovered from the oral cavity of each mouse and whitish, curd-like patches were observed on most parts of tongue. Microscopically, germ tubes had appeared on the tongue surface. This model would be a useful experimental oral candidiasis for investigating the pathogenesis of C. albicans oral infection and the efficacy of various antifungal agents microbiologically and symptomatically.

Amphotericin B↗
PubMed2001

Thrush in the breastfeeding dyad: results of a survey on diagnosis and treatment.

Infection with Candida albicans in the breastfeeding dyad has been associated with extreme pain in the breastfeeding mother and may lead to premature weaning. There is presently a dearth of information on diagnosis, natural history, and treatment of this condition in the literature. Therefore, before such a trial was conducted, a survey was sent to experts in the field of lactation, the members of The Academy of Breastfeeding Medicine, on the diagnosis and treatment of thrush in the breastfeeding mother and baby. Results showed that the majority of respondents relied primarily on history and physical examination of the baby, but not the mother, to make the diagnosis. Laboratory tests were ordered only rarely. The most common initial treatment was oral nystatin for the infant and cream for the mother's breasts. This was followed by oral nystatin for the infant and oral fluconazole for the mother. Treatment of recurrence or persistence was again most commonly nystatin for both mother and infant, followed by oral nystatin for the infant and oral fluconazole for the mother or oral fluconazole for both. In the absence of controlled trials of this condition, these results may serve as suggestions for the clinician, until definitive data are available.

Adult↗
PubMed1999

Genital thrush in women: the attitudes and practice patterns of General Practitioners in Teesside and north Yorkshire.

This study was performed in order to determine the attitudes and practice patterns of some of the GPs on Teesside and North Yorkshire in the management of their female patients complaining of genital thrush, a term often used to mean vulvo-vaginal candidosis an extremely common condition (Tobin, 1995; Elliott, 1998; Lopez-Martinez et al, 1984). Postal questionnaires were sent to 65 GPs on Teesside and the bordering areas of North Yorkshire. There were 45(69%) completed replies. Nearly all the GP's believed that antibiotic usage was associated with the development of this disorder; less than half (44%) of the patients seen had a confirmatory microbiological test in the form of examination of a high vaginal swab (HVS). The most frequently prescribed antifungal compound was found to be clotrimazole.

Adolescent↗
PubMed2003

A family of vortex wakes generated by a thrush nightingale in free flight in a wind tunnel over its entire natural range of flight speeds.

In view of the complexity of the wing-beat kinematics and geometry, an important class of theoretical models for analysis and prediction of bird flight performance entirely, or almost entirely, ignores the action of the wing itself and considers only the resulting motions in the air behind the bird. These motions can also be complicated, but some success has previously been recorded in detecting and measuring relatively simple wake structures that can sometimes account for required quantities used to estimate aerodynamic power consumption. To date, all bird wakes, measured or presumed, seem to fall into one of two classes: the closed-loop, discrete vortex model at low flight speeds, and the constant-circulation, continuous vortex model at moderate to high speeds. Here, novel and accurate quantitative measurements of velocity fields in vertical planes aligned with the freestream are used to investigate the wake structure of a thrush nightingale over its entire range of natural flight speeds. At most flight speeds, the wake cannot be categorised as one of the two standard types, but has an intermediate structure, with approximations to the closed-loop and constant-circulation models at the extremes. A careful accounting for all vortical structures revealed with the high-resolution technique permits resolution of the previously unexplained wake momentum paradox. All the measured wake structures have sufficient momentum to provide weight support over the wingbeat. A simple model is formulated and explained that mimics the correct, measured balance of forces in the downstroke- and upstroke-generated wake over the entire range of flight speeds. Pending further work on different bird species, this might form the basis for a generalisable flight model.

Animals↗
PubMed2004

The relationship between wingbeat kinematics and vortex wake of a thrush nightingale.

The wingbeat kinematics of a thrush nightingale Luscinia luscinia were measured for steady flight in a wind tunnel over a range of flight speeds (5-10 m s(-1)), and the results are interpreted and discussed in the context of a detailed, previously published, wake analysis of the same bird. Neither the wingbeat frequency nor wingbeat amplitude change significantly over the investigated speed range and consequently dimensionless measures that compare timescales of flapping vs. timescales due to the mean flow vary in direct proportion to the mean flow itself, with no constant or slowly varying intervals. The only significant kinematic variations come from changes in the upstroke timing (downstroke fraction) and the upstroke wing folding (span ratio), consistent with the gradual variations, primarily in the upstroke wake, previously reported. The relationship between measured wake geometry and wingbeat kinematics can be qualitatively explained by presumed self-induced convection and deformation of the wake between its initial formation and later measurement, and varies in a predictable way with flight speed. Although coarse details of the wake geometry accord well with the kinematic measurements, there is no simple explanation based on these observed kinematics alone that accounts for the measured asymmetries of circulation magnitude in starting and stopping vortex structures. More complex interactions between the wake and wings and/or body are implied.

Animals↗
PubMed1975

[Napkin thrush clinical picture, mycology, histology, therapy (author's transl)].

A well-defined, characteristic disease has been observed in babies at the Department of Dermatology, Innsbruck University, over the past 7 years. On account of the localisation and probable pathogenesis of the condition the term "Windelsoor" (napkin thrush) has been coined by us for it. The clinical picture, the mycological and histological findings, the therapeutic results and the follow up are reported and the aetiology and pathogenesis of this disease discussed.

Antibodies, Fungal↗
PubMed1975

[Diaper thrush. Clinical picture, mycology, histology, therapy (author's transl)].

During the last 7 years a well defined, characteristic disease has been observed in babies of the department of dermatology of the university clinic of Innsbruck. Because of the localisation and probable pathogenesis we have coined the term "Windelsoor" (diaper thrush) for it. Clinical picture, mycological and histological findings, therapeutical experience with therapy and follow-up results are reported. With reference to the anglo-american literature on this subject the pathogenesis of this disease is discussed.

Adrenal Cortex Hormones↗
PubMedDate not supplied

In vitro comparison of the activity of various antifungal drugs against new yeast isolates causing thrush in poultry.

Of 44 representative isolates of yeast isolated from the poultry upper digestive tract from 40 clinical thrush cases in Taiwan during 1985-87, 39 (89%) isolates were classified as Candida albicans, and 5 (11%) were classified as Torulopsis pintolopesii. Fifteen commercial antifungal drugs, incorporated individually in Sabouraud's dextrose agar by serial twofold dilutions, were tested for their inhibitory effect against the 44 isolates. The MIC50 of these drugs in increasing order was less than or equal to 2 ppm GV-11, 6 ppm gentian violet, less than 16 ppm amphotericin B, 16 ppm hyamine 1622, 25 ppm econazole, 35 ppm chlorohydroxyquinoline, 40 ppm nystatin, 64 ppm miconazole, 747 ppm malachite green, 1550 ppm benzoic acid, 1536 ppm copper sulfate, 3144 ppm Monoprop, 4951 ppm Mold Zap, greater than 16,384 ppm propionic acid, and greater than 16,384 ppm sodium propionate.

Animals↗
PubMedDate not supplied

"Hanseniaspora uvarum" the ultrastructural morphology of a rare ascomycete, isolated from oral thrush.

Superficial fungal infections, including oral thrush, often affect aged full denture wearers and many individuals over 65 years old. The aim of this study was to examine the ultrastructural morphology of a very rare yeast, named Hanseniaspora uvarum/guillermondi, member of the Ascomycetes family, whose pathogenesis and behaviour is not widely known. The yeast was isolated from whitish lesions of the buccal mucosa of an 70 years old woman. The specimen was collected with a mouth swab and cultured in Sabourauds-Dextrose agar. The identification of the organism was performed on the Api 20C Aux system. The yeast colonies, after fixation in glutaraldehyde 3% for 1 hour were immersed in OsO4 1% solution for 1 hour and were "in tissue" stained with uranyl acetate. Ultrathin sections, were observed with TEM Jeol C x 100. Our ultrastructural observations showed that this yeast had a thick cell wall in which the outer surface appeared fuzzy. In some yeasts we observed multilayered intracytoplasmic membrane a figure which is not described as far as we know in any yeast. Many vacuoles were frequently observed in the cytoplasm and especially in the center of the oval shaped cells. Bilateral budding which form ascospores is identical for the morphology of this yeast.

Aged↗