Publications
| Title | Abstract | Year(sorted ascending) Filter | PMID Filter |
|---|
| [observations on the development of the hypophysis in the black-headed gull]. | 1951 | 14826990 | |
| [incidence of ornithosis and salmonellosis in the black-headed gull (larus ridibundus l.). i. epidemiological investigations]. | 1957 | 13437333 | |
| [incidence of ornithosis and salmonellosis in the black-headed gull (larus ridibundus l.). i. epidemiological investigations]. | 1957 | 13437333 | |
| [ornithosis and salmonella infections in larus ridibundus l. ii. isolation and identification of ornithosis virus in gull with simultaneous detection of salmonella typhimurium]. | 1957 | 13472744 | |
| [ornithosis and salmonella infections in larus ridibundus l. ii. isolation and identification of ornithosis virus in gull with simultaneous detection of salmonella typhimurium]. | 1957 | 13472744 | |
| the incidence of ornithosis and salmonellosis in the black-headed gull (larus ridibundus l.). | 1957 | 13475800 | |
| the incidence of ornithosis and salmonellosis in the black-headed gull (larus ridibundus l.). | 1957 | 13475800 | |
| the incidence of ornithosis and salmonellosis in the black-headed gull (larus ridibundus l.). ii. isolation and identification of the virus of ornithosis from the black-headed gull with simultaneous isolation of s. typhi murium. | 1957 | 13502550 | |
| the incidence of ornithosis and salmonellosis in the black-headed gull (larus ridibundus l.). ii. isolation and identification of the virus of ornithosis from the black-headed gull with simultaneous isolation of s. typhi murium. | 1957 | 13502550 | |
| [contribution to the topochemistry of carbohydrates in embryonal kidneys in the laughing gull (larus ridibundus l.)]. | 1959 | 13669952 | |
| [comparative helminthological studies on the argentine gulls larus marinus dominicanus lichtenstein and larus ridibundus maculipennis lichtenstein with new observations on the species specificity of the parasites]. | 1964 | 14251217 | |
| [the organic nucleus of the mammilla in the early stages of formation of the eggshell of larus ridibundus]. | 1965 | 14268261 | |
| [on comparative osteogenesis of gallus domesticus l., larus ridibundus l. and larus canus l. ii. timely appearance of ossifications in larus ridibundus l. and larus canus l]. | 1967 | 5597019 | |
| [on comparative osteogenesis of gallus domesticus l., larus ridibundus l. and larus canus l. ii. timely appearance of ossifications in larus ridibundus l. and larus canus l]. | 1967 | 5597019 | |
| [on comparative osteogenesis of gallus domesticus l., larus ridibundus l. and larus canus l. i. time of appearance of ossifications in gallus domesticus l]. | 1967 | 5586873 | |
| [on comparative osteogenesis of gallus domesticus l., larus ridibundus l. and larus canus l. i. time of appearance of ossifications in gallus domesticus l]. | 1967 | 5586873 | |
| [on comparative osteogenesis of gallus domesticus l., larus ridibundus l. and larus canus l. iv. growth of bones of larus canus l. (conclusion)]. | 1968 | 5705506 | |
| [on comparative osteogenesis of gallus domesticus l., larus ridibundus l. and larus canus l. iv. growth of bones of larus canus l. (conclusion)]. | 1968 | 5705506 | |
| [on the comparative osteogenesis in gallus domesticuls l., larus ridibundus l. and larus canus l. 3. bone development of gallus domesticus l. and larus ridibundus l]. | 1968 | 5671978 | |
| [on the comparative osteogenesis in gallus domesticuls l., larus ridibundus l. and larus canus l. 3. bone development of gallus domesticus l. and larus ridibundus l]. | 1968 | 5671978 | |
| [enzyme histochemical and fine structural observations on the pecten oculi of the pigeon (columba livia) and laughing gull (larus ridibundus)]. | 1972 | 4343361 | |
| [enzyme histochemical and fine structural observations on the pecten oculi of the pigeon (columba livia) and laughing gull (larus ridibundus)]. | 1972 | 4343361 | |
| [morphogenesis of the osteocranium of larus ridibundus l.: comparative study based on reconstruction models and elucidation preparations]. | 1972 | 4658034 | |
| localisation and characterisation of egg shell porphyrins in several avian species. | 1. electron microscopy, infra-red analysis and histochemical techniques have been used to determine the site of pigment deposition, the cellular localisation of pigment and the type of pigment precipitated in the egg shells of quail, white leghorn, brown ranger and black-headed gull. 2. transfer of pigment occurs via the surface epithelial cells of the shell gland. 3. porphyrins are probably synthesised in the blood. 4. possible pigment deposition mechanisms are discussed. | 1975 | 1139348 |
| on the occurrence of argyrophil and fluorescent cells in the ultimobranchial body of larus ridibundus (l.). | 1977 | 409050 | |
| mucopolysaccharide histochemistry of the avian tongue. histochemical features of the lingual glands in larus ridibundus (l). | from the histochemical analysis carried out on the tongue of larus ridibundus (l.), it has been possible to establish that it is covered by thick stratum corneum on the dorsal surface and shows both in the anterior and posterior portions lingual glands, which histologically consist of aggregates of branched tubules. these glands exhibit identical histochemical reactions which show the presence of neutral mucopolysaccharides, sulfated and unsulfated acid mucosubstances and hyaluronidase-resistant ... | 1977 | 145782 |
| agonistic display and spacing in the black-headed gull, larus ridibundus. | black-headed gulls nesting on islands in a marsh habitat had a higher breeding success than those nesting on the periphery of the colony. island birds maintained close inter-nest distances whereas peripheral nests were spaced further apart as predation of eggs increased. these changes in spacing corresponded with changes in the response distances of agonistic displays. there was no change during incubation for island birds but peripheral birds displayed to intruders at much greater distances tha ... | 1977 | 562633 |
| agonistic display and spacing in the black-headed gull, larus ridibundus. | black-headed gulls nesting on islands in a marsh habitat had a higher breeding success than those nesting on the periphery of the colony. island birds maintained close inter-nest distances whereas peripheral nests were spaced further apart as predation of eggs increased. these changes in spacing corresponded with changes in the response distances of agonistic displays. there was no change during incubation for island birds but peripheral birds displayed to intruders at much greater distances tha ... | 1977 | 562633 |
| isolation of an influenza a virus strain from a bird embryo (larus ridibundus) collected in slovakia. | avian influenza virus a/larus 36/77 (hav7nav1) was isolated in 1977 from a trinket (larus ridibundus) embryo. this result suggests the possibility of vertical transmission of influenza a virus. | 1979 | 87125 |
| isolation of an influenza a virus strain from a bird embryo (larus ridibundus) collected in slovakia. | avian influenza virus a/larus 36/77 (hav7nav1) was isolated in 1977 from a trinket (larus ridibundus) embryo. this result suggests the possibility of vertical transmission of influenza a virus. | 1979 | 87125 |
| a study on the role of birds in the spread of infections. | during three expeditions undertaken in march 1977 to june 1978, 797 cloacal swabs were collected from birds of 54 species. seven salmonella strains of six serotype were isolated from larus ridibundus (five strains), corvus frugilegus and acrocephalus schoenobaenus (one each). four strains of influenza a (hav2 na4v) virus were isolated from larus ridibundus. for the first time in czechoslovakia, two strains of yucaipa paramyxovirus were isolated, both of them from troglodytes troglodytes. these r ... | 1979 | 575902 |
| a study on the role of birds in the spread of infections. | during three expeditions undertaken in march 1977 to june 1978, 797 cloacal swabs were collected from birds of 54 species. seven salmonella strains of six serotype were isolated from larus ridibundus (five strains), corvus frugilegus and acrocephalus schoenobaenus (one each). four strains of influenza a (hav2 na4v) virus were isolated from larus ridibundus. for the first time in czechoslovakia, two strains of yucaipa paramyxovirus were isolated, both of them from troglodytes troglodytes. these r ... | 1979 | 575902 |
| [properties of hav6neq2 and hswl(h0)hav2 influenza viruses isolated from waterfowl in southern turkmenia]. | three influenza a virus strains were isolated from shorebirds in october, 1977, in southern turkmenia, in the vicinities of tedzhen water reservoir. from a common tern, a/sterna hirundo/turkmenia/45/77 strain was isolated with the antigenic formula hav6neq2, from a teal and a black-headed gull influenza a/anas crecca/turkmenia/4/77 and a/larus ridibundus/turkmenia/13/77 strains with previously unknown combination of surface antigens hswl(h0)nav2 were recovered. by the molecular weight of the hea ... | 1980 | 6448515 |
| [properties of hav6neq2 and hswl(h0)hav2 influenza viruses isolated from waterfowl in southern turkmenia]. | three influenza a virus strains were isolated from shorebirds in october, 1977, in southern turkmenia, in the vicinities of tedzhen water reservoir. from a common tern, a/sterna hirundo/turkmenia/45/77 strain was isolated with the antigenic formula hav6neq2, from a teal and a black-headed gull influenza a/anas crecca/turkmenia/4/77 and a/larus ridibundus/turkmenia/13/77 strains with previously unknown combination of surface antigens hswl(h0)nav2 were recovered. by the molecular weight of the hea ... | 1980 | 6448515 |
| [isolation of influenza a viruses with a new antigenic formula from wild birds]. | three hemagglutinating agents were isolated from mixed pools of the viscera from black-headed gulls (larus ridibundus) and robin (erithacus rubecula) collected in the byelorussian ssa and the kaliningrad region of the rsfsr. typing of the viruses by double immunodiffusion technique revealed antigenic relationships of the viruses with swine hemagglutinin (hsw1) and human hemagglutinin h0. one of the strains had neuraminidase n2 the other two nav2. an analysis of the polypeptide composition of the ... | 1981 | 6455856 |
| [isolation of influenza a viruses with a new antigenic formula from wild birds]. | three hemagglutinating agents were isolated from mixed pools of the viscera from black-headed gulls (larus ridibundus) and robin (erithacus rubecula) collected in the byelorussian ssa and the kaliningrad region of the rsfsr. typing of the viruses by double immunodiffusion technique revealed antigenic relationships of the viruses with swine hemagglutinin (hsw1) and human hemagglutinin h0. one of the strains had neuraminidase n2 the other two nav2. an analysis of the polypeptide composition of the ... | 1981 | 6455856 |
| [hygienic quality of lakes which are used as open-air bath. 2. communication: comparison of biochemical typed escherichia coli strains isolated from lake water and bird excrements (author's transl)]. | 368 strains of escherichia coli were isolated from lakewaters and bird excrements (mainly black-headed gulls) using mandatory methods for drinking water examination. all strains were further characterized by 43 biochemical physiological and 30 morphological features. besides the api 30 e enterobacteriaceae system and the roche enterotube system of biochemical testing were used comparatively. the analysis using numerical methods for taxonomy pointed out that a single biotop could be characterized ... | 1981 | 7029972 |
| suspected teratoma in a black headed gull (larus ridibundus). | 1981 | 7292926 | |
| suspected teratoma in a black headed gull (larus ridibundus). | 1981 | 7292926 | |
| avian wildlife reservoir of campylobacter fetus subsp. jejuni, yersinia spp., and salmonella spp. in norway. | cloacal swabs from 540 wild-living birds were cultured for campylobacter fetus subsp. jejuni, yersinia spp., and salmonella spp. the carrier rates detected were as follows: c. fetus subsp. jejuni, 28.4%; yersinia spp., 1.2%; and salmonella spp., 0.8%. all birds were apparently healthy when captured. c. fetus subsp. jejuni was isolated from 11 of the 40 bird species examined. among birds inhabiting the city of oslo, the highest isolation rate was found in crows (corvus corone cornix) (89.8%), fol ... | 1983 | 6338824 |
| avian wildlife reservoir of campylobacter fetus subsp. jejuni, yersinia spp., and salmonella spp. in norway. | cloacal swabs from 540 wild-living birds were cultured for campylobacter fetus subsp. jejuni, yersinia spp., and salmonella spp. the carrier rates detected were as follows: c. fetus subsp. jejuni, 28.4%; yersinia spp., 1.2%; and salmonella spp., 0.8%. all birds were apparently healthy when captured. c. fetus subsp. jejuni was isolated from 11 of the 40 bird species examined. among birds inhabiting the city of oslo, the highest isolation rate was found in crows (corvus corone cornix) (89.8%), fol ... | 1983 | 6338824 |
| [botulism of aquatic birds at the starý u pohorelic pond (breclav district)]. | in the years 1981 and 1982 when a mass mortality of wild and domestic water birds was observed on the starý pond, eleven diseases or just died birds were examined by the neutralization test for botulotoxin and four sludge samples for the presence of clostridium botulinum. c. botulinum toxin of c type was detected in four wild ducks (anas platyrhynchos) from september 1981 and july 1982 and in one gull (larus ridibundus) and july 1982. the highest titres (of mice i. p. ld50/g) of botulotoxin in d ... | 1984 | 6441338 |
| [botulism of aquatic birds at the starý u pohorelic pond (breclav district)]. | in the years 1981 and 1982 when a mass mortality of wild and domestic water birds was observed on the starý pond, eleven diseases or just died birds were examined by the neutralization test for botulotoxin and four sludge samples for the presence of clostridium botulinum. c. botulinum toxin of c type was detected in four wild ducks (anas platyrhynchos) from september 1981 and july 1982 and in one gull (larus ridibundus) and july 1982. the highest titres (of mice i. p. ld50/g) of botulotoxin in d ... | 1984 | 6441338 |
| elimination of some enteroviruses in the excrements of experimentally infected rats (rattus norvegicus) and gulls (larus ridibundus). | young rats of both sexes, weight 150-170 g, the first laboratory progeny of captured wild parent pairs, were used throughout this experiment. rats in two experimental groups comprising a total of 34 animals were infected orally with type 2 poliovirus vaccine strain given in each group at doses of 500, 5000 or 50,000 tcd50. in the first experiment, the presence of poliovirus in rat excrements was detectable irregularly till day 13, in the second experiment till day 2 after infection. small quanti ... | 1984 | 6092458 |
| elimination of some enteroviruses in the excrements of experimentally infected rats (rattus norvegicus) and gulls (larus ridibundus). | young rats of both sexes, weight 150-170 g, the first laboratory progeny of captured wild parent pairs, were used throughout this experiment. rats in two experimental groups comprising a total of 34 animals were infected orally with type 2 poliovirus vaccine strain given in each group at doses of 500, 5000 or 50,000 tcd50. in the first experiment, the presence of poliovirus in rat excrements was detectable irregularly till day 13, in the second experiment till day 2 after infection. small quanti ... | 1984 | 6092458 |
| [incidence of influenza virus infection in black-headed gulls]. | two strains of influenza a viruses were isolated in 1978 from tracheal washings of 18 nestlings of black-headed gulls examined for influenza. three strains of influenza a viruses were isolated in 1979 from 55 gull embryos collected in the same colony, the isolates being similar in their antigenic characteristics with the influenza virus isolated from a gull nestling in 1978. this confirms the possibility of simultaneous circulation of antigenically different variants of influenza a virus among b ... | 1984 | 6730433 |
| [selection of antigenic variants of h1n1 influenza viruses by means of monoclonal antibodies]. | six different monoclonal antibodies to influenza a/brazil/11/78 virus hemagglutinin were used for selection of antigenic variants of h1n1 viruses: a/ussr/090/77 and a/black-headed gull/ kaz . ssr/470/79. the group-specific monoclonal antibody completely neutralized the infective activity of the parental viruses (dilutions 1:5 to 1:640). two antigenic variants of wild type viruses were obtained using cross-reactive antibody. a comparative study of the antigenic structure, biological properties, a ... | 1984 | 6730437 |
| a note on salmonella excretion in the black headed gull (larus ribibundus) feeding at sewage treatment works. | the range of salmonella serotypes found in sewage sludge and in the faeces of black headed gulls (larus ribibundus) feeding on the sludge was investigated. a close association was demonstrated between the serotypes found in both types of sample. salmonella takoradi (a serotype which is uncommon in scotland) appeared in the sludge for two short periods during the twelve week study and on both occasions it was later found in the gull faeces. it was shown that gulls become infected after feeding on ... | 1984 | 6746468 |
| morphogenesis and evolutionary morphology of the nasal apparatus of the black-headed gull (larus ridibundus l.) morphogenesis of the nasal capsule, nasal epithelial tube and organ of jacobson in sauropsida. ix. | 1984 | 6519592 | |
| morphogenesis and evolutionary morphology of the nasal apparatus of the black-headed gull (larus ridibundus l.) morphogenesis of the nasal capsule, nasal epithelial tube and organ of jacobson in sauropsida. ix. | 1984 | 6519592 | |
| morphogenesis and evolutionary morphology of the nasal apparatus of the black-headed gull larus ridibundus l.). ii. a morphological interpretation of individual structures. morphogenesis of the nasal capsule, nasal epithelial tube and organ of jacobson in sauropsida. x. | 1985 | 3988170 | |
| morphogenesis and evolutionary morphology of the nasal apparatus of the black-headed gull larus ridibundus l.). ii. a morphological interpretation of individual structures. morphogenesis of the nasal capsule, nasal epithelial tube and organ of jacobson in sauropsida. x. | 1985 | 3988170 | |
| [the occurrence of salmonellae in wild birds (passeriformes, lariformes)]. | the occurrence of salmonellae was investigated in 1011 cloacal smears of 21 species of wild birds caught at the locality of hermanický rybník near ostrava. salmonella typhimurium serotype was isolated from one of the 23 laughing gulls (larus ridibundus) which were examined; this corresponds to a 4.3% invasion frequency. the result of the examination of all other birds was negative. on the basis of the results of this study and the results published by other authors, laughing gull can be consider ... | 1985 | 3927558 |
| [the occurrence of salmonellae in wild birds (passeriformes, lariformes)]. | the occurrence of salmonellae was investigated in 1011 cloacal smears of 21 species of wild birds caught at the locality of hermanický rybník near ostrava. salmonella typhimurium serotype was isolated from one of the 23 laughing gulls (larus ridibundus) which were examined; this corresponds to a 4.3% invasion frequency. the result of the examination of all other birds was negative. on the basis of the results of this study and the results published by other authors, laughing gull can be consider ... | 1985 | 3927558 |
| lead, mercury, cadmium and selenium in two species of gull feeding on inland dumps, and in marine areas. | the influence of the foraging area on the intake of trace elements was evaluated in tissues of two species of gull: the black-headed gull (larus ridibundus) and the herring gull (larus argentatus). mercury levels were higher in birds from the coastal environment than in those caught on inland dumps; birds found at one dump site showed high levels of lead. interspecific differences in the levels of mercury and cadmium are discussed. | 1986 | 3810137 |
| lead, mercury, cadmium and selenium in two species of gull feeding on inland dumps, and in marine areas. | the influence of the foraging area on the intake of trace elements was evaluated in tissues of two species of gull: the black-headed gull (larus ridibundus) and the herring gull (larus argentatus). mercury levels were higher in birds from the coastal environment than in those caught on inland dumps; birds found at one dump site showed high levels of lead. interspecific differences in the levels of mercury and cadmium are discussed. | 1986 | 3810137 |
| how to live in colonies: spatial foraging strategies of the black-headed gull. | this paper describes some spatial foraging strategies observed in the course of the breeding season in five adult radio-tagged black-headed gulss (larus ridibundus). 1. individual foraging distances increased continuously during the nesting period. 2. the maximum foraging distance observed was 18.5 km. 3. all birds showed nearly constant flight directions over the whole breeding period. 4. it is suggested that the continuous increase in foraging distances reduces intraspecific competition around ... | 1986 | 28311671 |
| how to live in colonies: spatial foraging strategies of the black-headed gull. | this paper describes some spatial foraging strategies observed in the course of the breeding season in five adult radio-tagged black-headed gulss (larus ridibundus). 1. individual foraging distances increased continuously during the nesting period. 2. the maximum foraging distance observed was 18.5 km. 3. all birds showed nearly constant flight directions over the whole breeding period. 4. it is suggested that the continuous increase in foraging distances reduces intraspecific competition around ... | 1986 | 28311671 |
| the radiation exposure of black-headed gulls (larus ridibundus) in the ravenglass estuary, cumbria, u.k.: a preliminary assessment. | a variety of fission-product and transuranic radionuclides originating from the marine discharges from the fuel reprocessing plant at sellafield, cumbria are detectable in the bodies of black-headed gulls and their environment in the ravenglass estuary approximately 10 km to the south-west of the plant. the maximum concentrations of 95nb, 137cs and 239/240pu detected in body tissues lie in the range 2 x 10(-3) to 1.5 x 10(-2) bqg-1 wet weight. many more radionuclides are detected in the regurgit ... | 1986 | 3823858 |
| the radiosensitivity of embryos of domestic chickens and black-headed gulls. | eggs of domestic chickens and black-headed gulls were continuously exposed to gamma-rays during incubation, using dose rates ranging from 0.004 to 0.08 gy h-1 for 20 days. acute-dose experiments were also conducted, and eggs were irradiated on day 10 of incubation with doses of between 1.92 and 28.8 gy. hatchability and numbers reaching full-term developed were affected only after chronic doses of 9.6 gy and acute doses of 4.8 gy or higher. maximum embryo mortality occurred around days 10-11 of ... | 1988 | 3257949 |
| structural adaptation of bird hemoglobins to high-altitude respiration and the primary sequences of black-headed gull (larus ridibundus, charadriiformes) alpha a- and beta/beta'-chains. | two hemoglobin components hba (alpha a2 beta 2) and (alpha d2 beta 2) have been detected by analytical electrophoresis in the lysed erythrocytes of the adult black-headed gull (larus ridibundus). we report the complete primary structure of the alpha a- and beta-chains of the major hemoglobin component hba. following the chain separation and isolation of the tryptic peptides by rp-hplc, the amino-acid sequence was established by automatic edman degradation in spinning cup and gas-phase sequencers ... | 1988 | 3166738 |
| structural adaptation of bird hemoglobins to high-altitude respiration and the primary sequences of black-headed gull (larus ridibundus, charadriiformes) alpha a- and beta/beta'-chains. | two hemoglobin components hba (alpha a2 beta 2) and (alpha d2 beta 2) have been detected by analytical electrophoresis in the lysed erythrocytes of the adult black-headed gull (larus ridibundus). we report the complete primary structure of the alpha a- and beta-chains of the major hemoglobin component hba. following the chain separation and isolation of the tryptic peptides by rp-hplc, the amino-acid sequence was established by automatic edman degradation in spinning cup and gas-phase sequencers ... | 1988 | 3166738 |
| [antigenic variability of avian influenza virus a/h13, isolated in the ussr]. | the antigenic structure of influenza h13 viruses isolated from wild birds in the ussr in 1976-1985 was studied. antiserum against the reference a/gull/maryland/704/77 (h13n6) strain was used to demonstrate the antigenic variations among the viruses. the homology of nucleotide sequences in the region 99-215 for the two a/h13n6 strains, a/gull/maryland/704/77 and a/great black-headed gull/astrakhan/227/84, were 75% and 86%, respectively. the 9-base segment deletion in a/grey black-headed gull/astr ... | 1989 | 2609643 |
| [the "diseased" or "dead" guillemots (uria aalge), three-toed gulls (rissa tridactyla), silver gulls (larus argentatus) and laughing gulls (larus ridibundus) found in the area of the german bay, 1982-1985]. | between 1982 and 1985 the cadavers of 50 guillemots (uria aalge), 41 kittiwakes (rissa tridactyla), 26 herring gulls (larus argentatus) and 34 black-headed gulls (larus ridibundus) were examined pathological, bacteriological and virological. the probable cause of death was established. parasitosis were particularly prevalent in herring gulls (49%), where the main infection--as in black-headed gulls--was with cestoides. in kittiwakes and guillemots mainly spiruroideae were recorded. the commonest ... | 1989 | 2752934 |
| [the "diseased" or "dead" guillemots (uria aalge), three-toed gulls (rissa tridactyla), silver gulls (larus argentatus) and laughing gulls (larus ridibundus) found in the area of the german bay, 1982-1985]. | between 1982 and 1985 the cadavers of 50 guillemots (uria aalge), 41 kittiwakes (rissa tridactyla), 26 herring gulls (larus argentatus) and 34 black-headed gulls (larus ridibundus) were examined pathological, bacteriological and virological. the probable cause of death was established. parasitosis were particularly prevalent in herring gulls (49%), where the main infection--as in black-headed gulls--was with cestoides. in kittiwakes and guillemots mainly spiruroideae were recorded. the commonest ... | 1989 | 2752934 |
| [comparative studies of paramyxovirus isolates from wild birds]. | as a result of a surveillance programme in north-germany, paramyxovirus-isolates of serogroup 1 with different pathogenicity were isolated from different species of feral birds (black-headed gull, mallard, tawny owl, tree sparrow, mute swan). in chick embryo fibroblast monolayers these isolates produced plaques exhibiting different plaque morphology. after cloning the isolates, further physicochemical, serological and pathogenicity testings were performed. on the basis of mean death time and int ... | 1989 | 2763760 |
| energy dissipation in the elastic recoil of leg tendons of larus ridibundus. | cycles of tension and recoil were given to different tendons of black-headed gull (larus ridibundus) in an instron universal testing machine. it is shown that a large proportion of the energy elastically stored in straining is released upon recoil, ranging the energy lost (dissipation energy) between 8 and 13%. these results are in complete agreement with those published in the literature on mammals and birds that can be considered as the most accurate. | 1989 | 2606322 |
| energy dissipation in the elastic recoil of leg tendons of larus ridibundus. | cycles of tension and recoil were given to different tendons of black-headed gull (larus ridibundus) in an instron universal testing machine. it is shown that a large proportion of the energy elastically stored in straining is released upon recoil, ranging the energy lost (dissipation energy) between 8 and 13%. these results are in complete agreement with those published in the literature on mammals and birds that can be considered as the most accurate. | 1989 | 2606322 |
| [craniogenesis in the laughing gull (larus ridibundus l.). the reconstruction of the basic plan of the bird]. | to contribute to the knowledge of the cranium of older bird embryos, the chondrocranium and osteocranium of the black-headed gull (larus ridibundus) are described. the chondrocranium of the black-headed gull is compared with the chondrocranium of other bird species with special consideration of functional and phylogenetic aspects. as a result a "grundplan" of the bird chondrocranium is reconstructed. most of the chondrocranial autapomorphies of birds are connected with the enlargement of the eye ... | 1990 | 2242817 |
| [craniogenesis in the laughing gull (larus ridibundus l.). the reconstruction of the basic plan of the bird]. | to contribute to the knowledge of the cranium of older bird embryos, the chondrocranium and osteocranium of the black-headed gull (larus ridibundus) are described. the chondrocranium of the black-headed gull is compared with the chondrocranium of other bird species with special consideration of functional and phylogenetic aspects. as a result a "grundplan" of the bird chondrocranium is reconstructed. most of the chondrocranial autapomorphies of birds are connected with the enlargement of the eye ... | 1990 | 2242817 |
| [detection and characterization of salmonella strains from laughing gulls (larus ridibundus)]. | 25 and 17 salmonella strains could be isolated from 429 and 423 blackheaded gulls (larus ridibundus), respectively, during two years of examination. s. typhimurium was the most frequent serovar. all strains of s. typhimurium belonged to the biochemovar c (inosite and rhamnose negative), nearly a third of isolates caused a mannose-sensitive hemagglutination of guinea pig erythrocytes. this result is in contradiction to the literature. furthermore the phagovars, the plasmid profiles and the resist ... | 1991 | 1786042 |
| [detection and characterization of salmonella strains from laughing gulls (larus ridibundus)]. | 25 and 17 salmonella strains could be isolated from 429 and 423 blackheaded gulls (larus ridibundus), respectively, during two years of examination. s. typhimurium was the most frequent serovar. all strains of s. typhimurium belonged to the biochemovar c (inosite and rhamnose negative), nearly a third of isolates caused a mannose-sensitive hemagglutination of guinea pig erythrocytes. this result is in contradiction to the literature. furthermore the phagovars, the plasmid profiles and the resist ... | 1991 | 1786042 |
| [the occurrence of campylobacter spp. and salmonella spp. in gulls in northern germany]. | out of a total of 207 gulls--20 black headed gulls, 185 herring gulls and 2 common gulls--128 (62%) and 23 (11%) birds, respectively, were infected with campylobacter spp. (c.) and salmonella spp. c. jejuni was predominant in gulls less than two years old (89%) and c. coli in older birds (75%). furthermore, the infection rate with campylobacters was depending on the habitats of the birds. the rate for c. jejuni and c. coli, respectively, was in gulls from regional garbage dumps 78% and 4%, from ... | 1991 | 2065612 |
| radionuclides and the birds at ravenglass. | since 1983, concern has been expressed about the apparent decline in numbers of birds in the ravenglass estuary in west cumbria, particularly of the black-headed gull colony on the drigg dunes, and suggestions have been made that this decline might be due to excessive radiation in the birds' food and their general environment. twelve species of marine invertebrates from ravenglass, most of them known to be important foods for birds, were analysed, and further samples were taken from sites along ... | 1991 | 15092143 |
| [the black-headed gull (larus ridibundus l.), a new host for cryptosporidium baileyi (apicomplexa: cryptosporidiidae)]. | black-headed full (l. ridibundus l.) represents a new host of c. baileyi current, upton and haynes, 1986. in 1991-1992 during the months of may-july six localities in three regions of the czech republic were studied by examining in total 264 not flying gull chicks (4-30 days of age), applying the methods after pavlásek (1987a, b, 1991). cryptosporidia were found in gulls in all localities and spontaneous infection during the period under study occurred in 27.5-100% of birds (tab. ii, fig. 1). th ... | 1993 | 8259642 |
| [the black-headed gull (larus ridibundus l.), a new host for cryptosporidium baileyi (apicomplexa: cryptosporidiidae)]. | black-headed full (l. ridibundus l.) represents a new host of c. baileyi current, upton and haynes, 1986. in 1991-1992 during the months of may-july six localities in three regions of the czech republic were studied by examining in total 264 not flying gull chicks (4-30 days of age), applying the methods after pavlásek (1987a, b, 1991). cryptosporidia were found in gulls in all localities and spontaneous infection during the period under study occurred in 27.5-100% of birds (tab. ii, fig. 1). th ... | 1993 | 8259642 |
| the value of chick feathers to assess spatial and interspecific variation in the mercury contamination of seabirds. | in 1991 we compared eggs, down and body feathers of chicks of common terns, herring gulls and black-headed gulls in their utility to assess contamination with mercury. like eggs feathers distinctly show interspecific and intersite differences in contamination. highest levels were found in common terns, lowest in black-headed gulls. chicks hatched at the elbe had much higher mercury levels than those in other areas of the german north sea coast. conversion ratios between tissues have to be used w ... | 1993 | 24221187 |
| china's war on waste and pollution. | the water level of one of the longest rivers in the world, the yangtze in china, fell 20 cm below sea level in february 1993 at shashi in hubei province, the lowest water level in 20 years. in 1993, black-headed gulls left for their annual migration 3 months early because the deteriorating water environment in dianchi lake in kunming, yunnan province, could not support them. china's total surface run-off is among the world's top 5. yet it suffers a water deficit due to its large population size ... | 1993 | 12287012 |
| the estimation of age-specific breeding probabilities from recaptures or resightings in vertebrate populations: ii. longitudinal models. | we provide a statistical framework to estimate age-specific breeding probabilities in vertebrate populations, from recaptures or resightings of individuals marked as young. we consider data collected at one or possibly several points over time, when individual recapture histories are known, leading to models which we call longitudinal models. an example of resightings of black-headed gulls, larus ridibundus, is considered. | 1994 | 8068838 |
| salmonella contamination of the environment and its incidence in wild birds. | in 1984-1991, the incidence of salmonellas was studied in wild birds from various sites in the czech republic. on an agricultural farm with salmonellosis in calves, salmonellae were isolated from eight birds (seven passer domesticus, one serinus serinus) of 31 birds examined. on various agricultural farms with no salmonellosis in farm animals, salmonellae were found in two birds (columba livia f. domestica) of 2186 birds examined. of 35 birds caught at a municipal waste-dump site, salmonellae we ... | 1994 | 7839754 |
| salmonella contamination of the environment and its incidence in wild birds. | in 1984-1991, the incidence of salmonellas was studied in wild birds from various sites in the czech republic. on an agricultural farm with salmonellosis in calves, salmonellae were isolated from eight birds (seven passer domesticus, one serinus serinus) of 31 birds examined. on various agricultural farms with no salmonellosis in farm animals, salmonellae were found in two birds (columba livia f. domestica) of 2186 birds examined. of 35 birds caught at a municipal waste-dump site, salmonellae we ... | 1994 | 7839754 |
| [epizootiology and pathogenesis of avian mycobacteriosis in the laughing gull (larus ridibundus)]. | the occurrence of avian mycobacteriosis and sensitivity to m. avium were investigated in the laughing gull in this paper. the patho-morphological and culture examination of 35 individuals of the laughing gull caught at four different localities of the czech republic did not reveal any tuberculous lesions nor did it enable to isolate mycobacteria. after experimental intramuscular infection by suspension of m. avium macroscopic tuberculous lesions were found at the spot of puncture in 35 days, in ... | 1994 | 8009783 |
| [epizootiology and pathogenesis of avian mycobacteriosis in the laughing gull (larus ridibundus)]. | the occurrence of avian mycobacteriosis and sensitivity to m. avium were investigated in the laughing gull in this paper. the patho-morphological and culture examination of 35 individuals of the laughing gull caught at four different localities of the czech republic did not reveal any tuberculous lesions nor did it enable to isolate mycobacteria. after experimental intramuscular infection by suspension of m. avium macroscopic tuberculous lesions were found at the spot of puncture in 35 days, in ... | 1994 | 8009783 |
| differences in mercury contamination and elimination during feather development in gull and tern broods. | eggs, feathers (down, body feathers from side/shoulder and back) and some dead chicks (liver) from broods of three species, herring full (larus argentatus), black-headed gull (larus ridibundus), and common tern (sterna hirundo) from the german north sea coast were collected to study intersibling differences in mercury contamination and elimination into the growing feathers. the mercury contamination in eggs, feathers, and liver of the terns was about four times that of the gulls; black-headed gu ... | 1994 | 8060159 |
| differences in mercury contamination and elimination during feather development in gull and tern broods. | eggs, feathers (down, body feathers from side/shoulder and back) and some dead chicks (liver) from broods of three species, herring full (larus argentatus), black-headed gull (larus ridibundus), and common tern (sterna hirundo) from the german north sea coast were collected to study intersibling differences in mercury contamination and elimination into the growing feathers. the mercury contamination in eggs, feathers, and liver of the terns was about four times that of the gulls; black-headed gu ... | 1994 | 8060159 |
| [occurrence of salmonellae in the laughing gull (larus ridibundus)]. | in 1984-1994 black-headed gulls (larus ridibundus) from various localities in the czech republic were examined to assess the incidence of salmonellae. a total of 99 eggs from two nest colonies were examined. no salmonellae were detected. in examinations of 740 young birds from three colonies the total prevalence was 19.3%. in full grown gulls (number of examined birds 189) from five localities the total prevalence of salmonellae was 4.2%. in water specimens near the nest colonies, other habitats ... | 1995 | 7489134 |
| [occurrence of salmonellae in the laughing gull (larus ridibundus)]. | in 1984-1994 black-headed gulls (larus ridibundus) from various localities in the czech republic were examined to assess the incidence of salmonellae. a total of 99 eggs from two nest colonies were examined. no salmonellae were detected. in examinations of 740 young birds from three colonies the total prevalence was 19.3%. in full grown gulls (number of examined birds 189) from five localities the total prevalence of salmonellae was 4.2%. in water specimens near the nest colonies, other habitats ... | 1995 | 7489134 |
| [characteristics of the plasmid profile of inositol- and rhamnose- negative strains of salmonella typhimurium]. | s. typhimurium isolates obtained during a large outbreak of human salmonellosis associated with smoked mackerels in the czech republic as well as strains of s. typhimurium isolated from black headed gull (larus ridibundus) were examined following biotyping, phage typing, plasmid profiling and restriction endonuclease analysis (eco ri, hind iii and bam hi) of plasmid dna. the epidemic strain of s. typhimurium and two isolates from environment of nesting colony black-headed gull were meso-inositol ... | 1995 | 7716866 |
| [characteristics of the plasmid profile of inositol- and rhamnose- negative strains of salmonella typhimurium]. | s. typhimurium isolates obtained during a large outbreak of human salmonellosis associated with smoked mackerels in the czech republic as well as strains of s. typhimurium isolated from black headed gull (larus ridibundus) were examined following biotyping, phage typing, plasmid profiling and restriction endonuclease analysis (eco ri, hind iii and bam hi) of plasmid dna. the epidemic strain of s. typhimurium and two isolates from environment of nesting colony black-headed gull were meso-inositol ... | 1995 | 7716866 |
| salmonellae in gulls and other free-living birds in the czech republic. | cloacal swabs, collected from 756 wild synanthropic and exoanthropic birds of 57 species in the czech republic, yielded 32 strains of salmonella typhimurium [phage types (pt) 141, 104 and 41], six isolates of s. enteritidis (pt 8, 4 and 6e), and one each of s. panama and s. anatum. except for one s. enteritidis isolate from a grey-lag goose (anser anser) and one s. typhimurium isolate from a coot (fulica atra), all of the other strains were derived from black-headed gulls (larus ridibundus), of ... | 1995 | 7787820 |
| salmonellae in gulls and other free-living birds in the czech republic. | cloacal swabs, collected from 756 wild synanthropic and exoanthropic birds of 57 species in the czech republic, yielded 32 strains of salmonella typhimurium [phage types (pt) 141, 104 and 41], six isolates of s. enteritidis (pt 8, 4 and 6e), and one each of s. panama and s. anatum. except for one s. enteritidis isolate from a grey-lag goose (anser anser) and one s. typhimurium isolate from a coot (fulica atra), all of the other strains were derived from black-headed gulls (larus ridibundus), of ... | 1995 | 7787820 |
| interspecies differences in mixed function oxidase activity in birds: relationship between feeding habits, detoxication activities and organochlorine accumulation. | the relationship between feeding habits and interspecies differences in the detoxication ability of the mixed function oxidase (mfo) system was investigated in birds. the role of mfo (particularly aldrin epoxidase activity) in the detoxication/bioaccumulation of organochlorines was also investigated. euriphagic (yellow-legged herring gull (larus cachinnans), black-headed gull (larus ridibundus), jackdaw (corvus monedula), magpie (pica pica) and stenophagic (cormorant (phalacrocorax carbo), coot ... | 1995 | 15091496 |
| interspecies differences in mixed function oxidase activity in birds: relationship between feeding habits, detoxication activities and organochlorine accumulation. | the relationship between feeding habits and interspecies differences in the detoxication ability of the mixed function oxidase (mfo) system was investigated in birds. the role of mfo (particularly aldrin epoxidase activity) in the detoxication/bioaccumulation of organochlorines was also investigated. euriphagic (yellow-legged herring gull (larus cachinnans), black-headed gull (larus ridibundus), jackdaw (corvus monedula), magpie (pica pica) and stenophagic (cormorant (phalacrocorax carbo), coot ... | 1995 | 15091496 |
| heavy metals in some species of waterfowl of northern italy. | concentrations of heavy metals (zinc, copper, cadmium, and iron) were measured in several tissues (brain, gizzard, leg-muscle, heart, breast-muscle, intestine, liver and kidney) of moorhens (gallinula chloropus), black-headed gulls (larus ridibundus), and coots (fulica atra) collected between autumn 1985 and spring 1989 in northern italy. cadmium concentrations in the liver and kidney of water-rails (rallus aquaticus) and in five species of anatidae collected also were measured. high mean (+/- s ... | 1995 | 7563424 |
| heavy metals in some species of waterfowl of northern italy. | concentrations of heavy metals (zinc, copper, cadmium, and iron) were measured in several tissues (brain, gizzard, leg-muscle, heart, breast-muscle, intestine, liver and kidney) of moorhens (gallinula chloropus), black-headed gulls (larus ridibundus), and coots (fulica atra) collected between autumn 1985 and spring 1989 in northern italy. cadmium concentrations in the liver and kidney of water-rails (rallus aquaticus) and in five species of anatidae collected also were measured. high mean (+/- s ... | 1995 | 7563424 |
| residues of chlorinated pesticides in the eggs of karelian birds, 1989-90. | eggs (n = 52) of four aquatic bird species (larus canus, larus argentatus, larus ridibundus, sterna hirundo) and crow (corvus cornix), collected in southern karelia in 1989 and 1990, contained dde and lindane. the highest mean levels of these pollutants were in herring gull eggs and in common tern eggs. the lowest mean levels of pesticides were in crow eggs. in all eggs, dde concentrations were lower than the critical threshold and it seems, cannot influence reproductive success. | 1995 | 15091609 |
| residues of chlorinated pesticides in the eggs of karelian birds, 1989-90. | eggs (n = 52) of four aquatic bird species (larus canus, larus argentatus, larus ridibundus, sterna hirundo) and crow (corvus cornix), collected in southern karelia in 1989 and 1990, contained dde and lindane. the highest mean levels of these pollutants were in herring gull eggs and in common tern eggs. the lowest mean levels of pesticides were in crow eggs. in all eggs, dde concentrations were lower than the critical threshold and it seems, cannot influence reproductive success. | 1995 | 15091609 |
| demographic models for subdivided populations: the renewal equation approach | le bras (theor. popul. biol. 2, 100-121, 1971) and rogers (demography 11, 473-481, 1974), in two neglected papers, have generalized to the multisite case the euler-lotka renewal equation and demographic characteristics such as age structure and reproductive value. the purpose of this paper is twofold: first, to restate the multisite renewal equation in the matrix context; second, to derive results on age structure, net reproduction rate, generation time, and sensitivities, as generalizations of ... | 1996 | 8813026 |
| demographic models for subdivided populations: the renewal equation approach | le bras (theor. popul. biol. 2, 100-121, 1971) and rogers (demography 11, 473-481, 1974), in two neglected papers, have generalized to the multisite case the euler-lotka renewal equation and demographic characteristics such as age structure and reproductive value. the purpose of this paper is twofold: first, to restate the multisite renewal equation in the matrix context; second, to derive results on age structure, net reproduction rate, generation time, and sensitivities, as generalizations of ... | 1996 | 8813026 |
| the relation among gonadal steroids, immunocompetence, body mass, and behavior in young black-headed gulls (larus ridibundus). | we experimentally examined the effect of testosterone on the antibody response to a single immunization with sheep red blood cells in young black-headed gulls. this species performs a number of testosterone-mediated elaborate postural displays in social interactions and breeds in dense colonies in which there is a high likelihood of infectious diseases. in young chicks, only one-third were capable of responding to immunization. in the responding chicks, testosterone enhanced antibody titers. eve ... | 1997 | 18811282 |