| the isolation of saumarez reef virus, a new flavivirus, from bird ticks ornithodoros capensis and ixodes eudyptidis in australia. | strains of a new flavivirus, for which the name saumarez reef virus is proposed, were isolated from seabird ticks collected from four localities. two strains were isolated from ticks of the species ornithodoros capensis neumann 1901 collected from the nests of sooty terns, sterna fuscata linnaeus 1766 on coral cays off the east coast of queensland, australia. the other three strains were isolated from ticks of the species ixodes eudyptidis maskell 1885 taken from two dead silver gulls larus nova ... | 1977 | 75000 |
| [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 |
| amino-acid sequence of feather keratin from fowl. | the amino acid sequence of a single polypeptide chain, b-4, from fowl feather barbs has been determined. the b-4 chain was found to consist of 96 amino acid residues and to have a molecular weight of 10206 in the s-carboxymethylated form. the n terminus of this protein was an n-acetylserine residue. the b-4 protein contained seven s-carboxymethylcysteine residues, six of which are located in the n-terminal region (residues 1-26), and other one in c terminus. the central region of the peptide cha ... | 1983 | 6189711 |
| comparison of helicobacter spp. genetic sequences in wild and captive seals, and gulls. | helicobacter species are widely distributed in the gastrointestinal system of humans and many animal taxa. investigations of natural infections are essential to elucidating their role within the host. the feces of fur seals arctocephalus pusillus doriferus and sea lions neophoca cinerea from 3 separate captive populations, as well as a wild colony from kangaroo island, australia, were examined for the occurrence of helicobacter spp. the feces from several wild silver gulls larus novahollandiae w ... | 2005 | 16060262 |
| amino acid sequence of a feather keratin from silver gull (larus novae-hollandiae) and comparison with one from emu (dromaius novae-hollandiae). | | 1974 | 4429491 |
| variation in the responses of wild species of duck, gull, and wader to inoculation with a wild-bird-origin h6n2 low pathogenicity avian influenza virus. | there is poor understanding of host responses to avian influenza virus (aiv) infection in wild birds, with most experimental studies using captive-bred birds and highly pathogenic aivs that have an early endpoint. the objective of this study was to experimentally assess antibody responses and patterns of viral excretion in wild birds challenged with a low pathogenicity aiv. ruddy turnstones (arenaria interpres), silver gulls (chroicocephalus novaehollandiae), and wandering whistling ducks (dendr ... | 2013 | 24283122 |
| heritability of fitness components in a wild bird population. | consistently with the prediction that selection should deplete additive genetic variance (v(a)) in fitness, traits closely associated to fitness have been shown to exhibit low heritabilities (h(2)=v(a)/(v(a)+v(r))). however, empirical data from the wild indicate that this is in fact due to increased residual variance (v(r)), rather than due to decreased additive genetic variance, but the studies in this topic are still rare. we investigated relationships between trait heritabilities, additive ge ... | 2009 | 19054048 |
| bergmann's rule and climate change revisited: disentangling environmental and genetic responses in a wild bird population. | ecological responses to on-going climate change are numerous, diverse, and taxonomically widespread. however, with one exception, the relative roles of phenotypic plasticity and microevolution as mechanisms in explaining these responses are largely unknown. several recent studies have uncovered evidence for temporal declines in mean body sizes of birds and mammals, and these responses have been interpreted as evidence for microevolution in the context of bergmann's rule-an ecogeographic rule pre ... | 2008 | 18757740 |
| the impact of climate fluctuation on food availability and reproductive performance of the planktivorous red-billed gull larus novaehollandiae scopulinus. | 1. using 41 years of data, we examined annual variations in the reproductive performance of the red-billed gull at the kaikoura peninsula, new zealand and related these to changes in climate, oceanography and the availability of the planktonic euphausiid nyctiphanes australis, the bird's principal food. 2. in 1994 the population began to decline, and between 1983 and 2003 it was reduced by 51%. adult non-breeders comprised an average of 32% of the population between 1983 and 1994, but following ... | 2008 | 18422559 |
| description and proposed life cycle of maritrema novaezealandensis n. sp. (microphallidae) parasitic in red-billed gulls, larus novaehollandiae scopulinus, from otago harbor, south island, new zealand. | maritrema novaezealandensis n. sp. is described from otago harbor, south island, new zealand, on the basis of adult specimens collected from the red-billed gull, larus novaehollandiae scopulinus, and excysted metacercariae obtained from crabs. it belongs to the "eroliae group" and differs from other related species mainly in the shape, size, and patterns of distributions of the spines on the cirrus, the shape of the metraterm, the presence of an unlobed ovary, and the complete ring of the vitell ... | 2004 | 15165049 |
| mercury levels in the plumage of red-billed gulls larus novaehollandiae scopulinus of known sex and age. | samples of 4-8 small body feathers were taken from 27 chicks and 35 adult red-billed gulls caught at their nests on the kaikoura peninsula, new zealand, in december 1988. the adults had been ringed as chicks and were of known ages from 2 to 15 years old. analysis of total mercury in the feather samples showed that levels were independent of sex and age in adults. mean fresh weight concentration in adult body feathers was 2.4 microg g(-1). the lack of age accumulation of mercury in gull feathers ... | 1990 | 15092330 |
| population connectivity and traces of mitochondrial introgression in new zealand black-billed gulls (larus bulleri). | black-billed gulls (larus bulleri) are endemic to new zealand and are suspected to be undergoing substantial population declines. they primarily breed on open gravel beds in braided rivers of the south island-a habitat that is diminishing and becoming increasingly modified. although management of this species is increasing, little has been published on their movements and demographics. in this study, both mitochondrial dna (mtdna) control region domain i and nuclear single nucleotide polymorphis ... | 2018 | 30424003 |
| opportunistic sampling of wild native and invasive birds reveals a rich diversity of adenoviruses in australia. | little is known about the diversity of adenoviruses in wild birds and how they have evolved and are maintained in complex ecosystems. in this study, 409 samples were collected from woodland birds caught for banding (droppings), birds submitted to a wildlife hospital (droppings and tissues), silver gulls (droppings or tissues), and feral pigeons (columbia livia; oral, cloacal swabs, or tissues) from the greater sydney area in nsw, australia. additional samples were from native pigeons and doves ( ... | 2020 | 32411389 |
| escherichia coli st457: an emerging extended-spectrum β-lactam resistant lineage with reservoirs in wildlife and food-producing animals. | silver gulls carry phylogenetically diverse escherichia coli including globally dominant expec sequence types and pandemic expec-st131 clades, however our large-scale study (504 samples) on silver gulls nesting off the coast of new south wales identified e. coli st457 as the most prevalent. a phylogenetic analysis of whole-genome sequences (wgs) of 138 st457 comprising of 42 from gulls, two from humans (australia) and 14 from poultry farmed in paraguay were compared with 80 wgs deposited in publ ... | 2020 | 33020161 |
| acute poisoning of silver gulls (larus novaehollandiae) following urea fertilizer spillage. | two episodes of accidental urea toxicosis are described in wild silver gulls (larus novaehollandiae) following spillage of fertilizer grade urea at a commercial shipping facility near perth, western australia. in both cases, urea spillage had been seen to contaminate freshwater wash-down pools on the wharves where ships were being unloaded and gulls were seen to be drinking and washing in the pools nearby the spillages. affected birds were found moribund or dead. necropsy and histopathological f ... | 2006 | 16448941 |
| perfluorinated alkyl acids in water, sediment and wildlife from sydney harbour and surroundings. | perfluorinated alkyl compounds (pfcs) including perfluorooctane sulphonate (pfos) and perfluorooctanoate (pfoa) were measured in environmental samples collected from around homebush bay, an urban/industrial area in the upper reaches of sydney harbour and parramatta river estuary. water, surface sediment, sea mullet (mugil cephalus), sydney rock oyster (saccostrea commercialis) and eggs of two bird species; white ibis (threskiornis molucca), and silver gull (larus novaehollandiae) were analysed. ... | 2011 | 21963084 |
| the hybrid bio-inspired aerial vehicle: concept and simscape flight simulation. | this paper introduces a silver gull-inspired hybrid aerial vehicle, the super sydney silver gull (sssg), which is able to vary its structure, under different manoeuvre requirements, to implement three flight modes: the flapping wing flight, the fixed wing flight, and the quadcopter flight (the rotary wing flight of unmanned air vehicle). specifically, through proper mechanism design and flight mode transition, the sssg can imitate the silver gull's flight gesture during flapping flight, save pow ... | 2016 | 28268747 |
| vancomycin-resistant enterococci with vana and vanb genes in australian gulls. | this study is revealing the possible dissemination of vancomycin-resistant enterococci (vre) from humans into the wildlife. we studied silver gulls (chroicocephalus novaehollandiae) in australia as potential carriers and reservoirs of vre with acquired vancomycin resistance. in new south wales (australia), we have found two multi-resistant isolates belonging to enterococcus faecium (sequence type 341, vanb genotype) and enterococcus dispar (vana genotype). based on our knowledge, this is the fir ... | 2017 | 28464539 |
| high prevalence of salmonella and imp-4-producing enterobacteriaceae in the silver gull on five islands, australia. | the objective of this study was to investigate the silver gull as an indicator of environmental contamination by salmonellae and carbapenemase-producing enterobacteriaceae (cpe) in south-east australia. | 2015 | 26472769 |
| a new host record for plasmodium relictum: the silver gull (larus novae-hollandiae stephens). | | 1961 | 13759689 |
| studies on austrobilharzia terrigalensis (trematoda: schistosomatidae) in the swan estuary, western australia: infection in the definitive host, larus novaehollandiae. | | 1983 | 6874226 |
| [the occurrence and characterization of campylobacter spp. in silver gulls (larus argentatus), three-toed gulls (rissa tridactyla) and house sparrows (passer domesticus)]. | altogether 16 campylobacter (c.) isolates could be recovered from 65 herring gulls: 5 x c. laridis, 2 x c. jejuni biovar 1, 4 x c. jejuni biovar 2 and 5 x c. coli. campylobacter spp. were isolated from 15 out of 51 samples from kittiwakes: 2 x c. jejuni biovar 1 and 13 x c. laridis. all c. coli isolates grew on agar containing 1.5% nacl. two campylobacter isolates from 50 house sparrows differed from all other isolates by a distinct beta-hemolysis and other phenotypic characteristics and could n ... | 1989 | 2750361 |
| the bird schistosome austrobilharzia terrigalensis from the great barrier reef, australia. | austrobilharzia terrigalensis from egretta sacra and larus novaehollandiae at heron island, great barrier reef, is described. the prosobranch snail planaxis sulcatus is the natural intermediate host of a. terrigalensis at heron island. the life-cycle of a. terrigalensis was worked out using naturally and experimentally infected planaxis sulcatus and experimentally infected chickens. experiments to produce a dermatitis with cercariae of a. terrigalensis were negative. austrobilharzia terrigalensi ... | 1977 | 888509 |
| new schistorophine nematodes (acuraiidae) from new zealand shore birds. | viktorocara torea and sciadiocara tarapunga n. spp. are described from specimens from the gizzards of haematopus ostralegus finschi and larus novaehollandiae scopulinus respectively. all hosts were collected in the south island, new zealand. v. torea is characterised by the possession of doubly bifid apices to the long spicule and absence of a subterminal spicular spur; presence of six preanal papillae, the first and second widely spaced: the muscular region of the oesophagus constituting about ... | 1978 | 659825 |
| resistance to critically important antimicrobials in australian silver gulls (chroicocephalus novaehollandiae) and evidence of anthropogenic origins. | antimicrobial resistance (amr) to critically important antimicrobials (cias) amongst gram-negative bacteria can feasibly be transferred amongst wildlife, humans and domestic animals. this study investigated the ecology, epidemiology and origins of cia-resistant escherichia coli carried by australian silver gulls (chroicocephalus novaehollandiae), a gregarious avian wildlife species that is a common inhabitant of coastal areas with high levels of human contact. | 2019 | 31287537 |
| implications of foraging and interspecies interactions of birds for carriage of escherichia coli strains resistant to critically important antimicrobials. | globally, gulls have been associated with carriage of high levels of escherichia coli strains resistant to critically important antimicrobials (cias), a major concern, as these antimicrobials are the sole alternative or one among only a few alternatives available to treat severe life-threatening infections in humans. previous studies of australian silver gulls demonstrated high levels of resistance to cias, particularly fluoroquinolone and extended-spectrum cephalosporins, among e. coli strains ... | 2020 | 32801178 |
| indirect genetic effects in a sex-limited trait: the case of breeding time in red-billed gulls. | female reproductive performance can be strongly affected by male care, so that breeding time, a trait expressed only by females, can be seen as one trait determined by both male and female genotypes. animal model analyses of a 46-year study of red-billed gulls (larus novaehollandiae scopulinus) revealed that laying date was not heritable in females (h(2) = 0.001 +/- 0.030), but significantly so in males (h(2) = 0.134 +/- 0.029). heritability of breeding time in males probably reflects genetic va ... | 2010 | 20345824 |