| [isolation of influenza virus with the antigenic formula hav4 nav2 and hav5 nav2 during epizootic infection among sea gulls in the astrakhan district in the summer of 1976]. | virological examinations of nesting colonies of laridae birds in the avandelta of the volga, astrakhan region, during an epizootic in july, 1976, yielded 5 strains of influenza virus: 3 from sterna albifrons, 1 from s. hirundo and 1 from larus genei, identical with a/sterna hirundo/s. africa/61 (hav5 nav2) virus. at the same period two strains were isolated from larus genei showing a previously unknown composition of the surface antigens: hav4 nav2. all the strains were isolated only from cloaca ... | 1978 | 155358 |
| vim-1 carbapenemase-producing escherichia coli in gulls from southern france. | acquired carbapenemases currently pose one of the most worrying public health threats related to antimicrobial resistance. a ndm-1-producing salmonella corvallis was reported in 2013 in a wild raptor. further research was needed to understand the role of wild birds in the transmission of bacteria resistant to carbapenems. our aim was to investigate the presence of carbapenem-resistant escherichia coli in gulls from southern france. in 2012, we collected 158 cloacal swabs samples from two gull sp ... | 2017 | 28303191 |
| high prevalence of sxt/r391-related integrative and conjugative elements carrying blacmy-2 in proteus mirabilis isolates from gulls in the south of france. | the genetic structures involved in the dissemination of blacmy-2 carried by proteus mirabilis isolates recovered from different gull species in the south of france were characterized and compared to clinical isolates. blacmy-2 was identified in p. mirabilis isolates from 27/93 yellow-legged gulls and from 37/65 slender-billed gulls. it was carried by a conjugative sxt/r391-like integrative and conjugative element (ice) in all avian strains and in 3/7 human strains. two clinical isolates had the ... | 2016 | 26643344 |
| interspecific differences in the antioxidant capacity of two laridae species exposed to metals. | the main aim of the present study was to assess the concentration of metals (pb, cd, hg, cu and zn) in blood, and elucidate their potential effects on oxidative stress biomarkers in red blood cells of audouin's gull (ichthyaetus audouinii) and slender-billed gull (chroicocephalus genei) chicks in southeastern spain. for this purpose, total glutathione (gsh) content, antioxidant enzymes activities (glutathione peroxidase, gpx; superoxide dismutase, sod; catalase, cat and glutathione-s-transferase ... | 2016 | 26866449 |
| delta-aminolevulinic acid dehydratase (δalad) activity in four free-living bird species exposed to different levels of lead under natural conditions. | the purposes of this study were: (1) to determine the δalad activity and δalad ratio in blood of four free-living bird species (griffon vulture, eagle owl, slender-billed gull and audouin's gull); (2) and to investigate the correlations between δalad activity/ratio and pb concentrations in blood samples. a decrease was observed in δalad activity in griffon vultures and eagle owls exposed to pb. in addition, negative relationships were found between δalad ratio or δalad activity and log blood pb ... | 2015 | 25569843 |
| mercury concentrations in common tern sterna hirundo and slender-billed gull larus genei from the shadegan marshes of iran, in north-western corner of the persian gulf. | we examined mercury levels in several tissues of common terns and slender-billed gulls collected from shadegan marshes of south-western iran. in both species, total mercury content was highest in feathers followed by liver, kidney and muscle tissue. we found a significant correlation between mercury concentrations in kidney and breast feather (r=0.83, p<0.05), breast feather and liver (r=0.81, p<0.05) as well as liver and kidney (r=0.83, p<0.05). the contaminant levels in the feathers (11.53 and ... | 2014 | 24819088 |
| living on the edge: demography of the slender-billed gull in the western mediterranean. | small and peripheral populations are typically vulnerable to local extinction processes but important for the metapopulation dynamics of species. the slender-billed gull (chroicocephalus genei) is a long-lived species breeding in unstable ephemeral coastal habitats. their western mediterranean populations are relatively small and represent the edge of their global geographical distribution. at a local scale, using long-term data (14 years) on annual breeding success and capture-resights of marke ... | 2014 | 24664115 |
| adapting to a changing world: unraveling the role of man-made habitats as alternative feeding areas for slender-billed gull (chroicocephalus genei). | current rates of wildlife habitat loss have placed increasing demands on managers to develop, validate and implement tools aimed at improving our ability to evaluate such impacts on wildlife. here, we present a case study conducted at the natural area of doñana (sw spain) where remote sensing and stable isotope (δ(13)c, δ(15)n) analyses of individuals were combined to unravel (1) the effect of variations in availability of natural food resources (i.e. from natural marshes) on reproductive perfor ... | 2012 | 23094062 |
| tracing waterbird exposure to total mercury and selenium: a case study at the solar saltworks of thyna (sfax, tunisia). | saltworks have emerged as important alternative/complementary feeding habitats for avifauna. however, the consequences of such habitat shifts in terms of changes in exposure to contaminants are poorly understood. we evaluated the exposure of the waterbird community breeding at the saltworks of thyna (tunisia) to total hg (thg) and se according to their differential use of saltworks dietary resources, as revealed by δ¹³c and δ¹⁵n values in their eggs (included species [n] -sorted according to inc ... | 2011 | 21663312 |
| potential for individual recognition in acoustic signals: a comparative study of two gulls with different nesting patterns. | we test relationships between structure of acoustic signal used for individual recognition and nesting ecology among two gulls: the black-headed gull (larus ridibundus), in which chicks remain in the nest, and the slender-billed gull (l. genei), in which chicks leave the nest after hatching to form crèches. a striking difference between both species is the presence of two fundamental frequencies in the slender-billed gull's call and only one in the black-headed gull's call. our study shows that ... | 2003 | 12806840 |
| a new cestode, wardium gvozdevi sp. n. (cestoda: hymenolepididae), and its biology. | a new species, wardium gvozdevi sp. n., was described from a slender-billed gull (larus genei brême) in central kazakhstan (lake tengiz). it was experimentally established that brine shrimps artemia salina, abundant in the lake, are obligatory intermediate host of the cestodes. wardium gvozdevi develops in the intermediate host (from an oncosfere to a cysticercoid) during 12-15 days under conditions of lake tengiz with the extremely salt water (65-80 per mill) and temperatures of 22-24 degrees c ... | 1988 | 3198012 |
| foraging niche shift maintains breeding parameters of a colonial waterbird during range expansion. | relating the effects of foraging niche variation to reproductive dynamics is critical to understand species response to environmental change. we examined foraging niche variations of the slender-billed gull (chroicocephalus genei), a nomadic colonial waterbird species during its range expansion along the french mediterranean coast over a 16-year period (1998-2013). we investigated whether range expansion was associated with a change in chick diet, breeding success, and chicks body condition. we ... | 2020 | 32128131 |
| insights on dispersal and recruitment paradigms: sex- and age-dependent variations in a nomadic breeder. | sex- and age-dependence in recruitment and dispersal are often explained by costs arising from competition for holding a breeding territory over the years-a typical feature of species living in stable habitats. for instance, long-lived birds with male territoriality often exhibit large variation in recruitment age and higher dispersal in females and young individuals. as a corollary, we expected that species with ephemeral habitat suitability, and hence nomadic breeding, would show weak age- and ... | 2018 | 29063200 |
| pathogen presence in wild birds inhabiting landfills in central iran. | wild birds are important in the transmission of many zoonotic pathogens such as salmonella and avian influenza virus (aiv). the current study investigated the presence of bacterial and viral pathogens in birds foraging at an open landfill located in central iran. we collected blood and intestinal samples from five abundant species, including rook (corvus frugilegus), european starling (sturnus vulgaris), house sparrow (passer domesticus), black-headed gull (chroicocephalus ridibundus) and slende ... | 2021 | 33783651 |