13 research outputs found
The First Record from Ukraine of the Spider Monaeses israeliensis (Aranei, Thomisidae), from the Crimea
Monaeses israeliensis Levy, 1973 is recorded from Cape Aya, Crimean Peninsula. This is also the first record of this species in Ukraine. Comments on the geographical distribution and diagnostic illustrations of this species are given
Physicochemical quality indicators of honey: An evaluation in a Ukrainian socioecological gradient
Physical and chemical quality indicators of 65 polyfloral honey samples from three administrative districts of Chernivtsi region in South Western Ukraine were studied. The chosen administrative districts were Putyla (representing the 'Traditional villages' stratum), Storozhynets (the 'Intermediate' stratum) and Khotyn (the 'Intensive agriculture' stratum), which reflect a steep gradient of social and ecological conditions such as land cover and land use, level of economic development, culture and demography. The quality of honey was determined in accordance with the requirements of the Ukrainian national standard and the EU Directive relating to honey (or Codex Alimentarius Honey Standard) by using the following indicators: reducing sugars and moisture content, diastase activity, free acidity, pH, electrical conductivity, hydroxymethylfurfural (HMF) and proline content. The profile of carbohydrates was analyzed, in particular glucose, fructose, sucrose, maltose, trehalose, melezitose, raffinose. The ratio of fructose to glucose (F/G) was determined. All tested samples complied with the international standards for the mass fraction of reducing sugars, diastase activity and hydroxymethylfurfural content. For physical and chemical parameters, the studied honey samples were of high quality. The content of the reducing sugars in the honey samples varied within the range of 66.0-97.6%. The fructose content ranged from 342 to 549 mg/g, and the glucose content variation ranged within 283-517 mg/g. The average fructose/glucose ratio was 1.2 for honey samples from the three studied districts. Besides fructose and glucose, some oligosaccharides, such as maltose, trehalose and melezitose, were found in the examined honey. Melezitose was detected in the honey samples from 'Traditional village' (21 samples) and 'Intermediate' (5 samples) districts. The total variability of HMF content in the studied 65 honey samples from apiaries in the three districts of Chernivtsi region ranged from 0.19 to 30.8 mg/kg. The minimum moisture content was found to be 16.2% (in the 'Traditional village' and 'Intermediate' strata), and 22.2% was the maximum (in the 'Intermediate' stratum). Our studies have shown that free acidity of the samples varied within the range 13.5 to 58.0 meq/kg. Proline content variability for the three studied geographical areas ranged from 82.3 to 1201.2 mg/kg. The studied samples of honey had a low pH level (similar to 3.7), high content of proline (similar to 513 mg/kg) and reducing sugars (similar to 80%), which indicates its nutritional value and naturalness. Deviations from the honey standards in moisture content, acidity and electrical conductivity was revealed in 8% to 10% of all samples
Maintaining natural and traditional cultural green infrastructures across Europe: learning from historic and current landscape transformations
CONTEXT: Maintaining functional green infrastructures (GIs) require evidence-based knowledge about historic and current states and trends of representative land cover types. OBJECTIVES: We address: (1) the long-term loss and transformation of potential natural forest vegetation; (2) the effects of site productivity on permanent forest loss and emergence of traditional cultural landscapes; (3) the current management intensity; and (4) the social-ecological contexts conducive to GI maintenance. METHODS: We selected 16 case study regions, each with a local hotspot landscape, ranging from intact forest landscapes, via contiguous and fragmented forest covers, to severe forest loss. Quantitative open access data were used to estimate (i) the historic change and (ii) transformation of land covers, and (iii) compare the forest canopy loss from 2000 to 2018. Qualitative narratives about each hotspot landscape were analysed for similarities (iv). RESULTS: While the potential natural forest vegetation cover in the 16 case study regions had a mean of 86%, historically it has been reduced to 34%. Higher site productivity coincided with transformation to non-forest land covers. The mean annual forest canopy loss for 2000–2018 ranged from 0.01 to 1.08%. The 16 case studies represented five distinct social-ecological contexts (1) radical transformation of landscapes, (2) abuse of protected area concepts, (3) ancient cultural landscapes (4) multi-functional forests, and (5) intensive even-aged forest management, of which 1 and 4 was most common. CONCLUSIONS: GIs encompass both forest naturalness and traditional cultural landscapes. Our review of Pan-European regions and landscapes revealed similarities in seemingly different contexts, which can support knowledge production and learning about how to sustain GIs
Honey bee colony loss rates in 37 countries using the COLOSS survey for winter 2019–2020: the combined effects of operation size, migration and queen replacement
Publication history: Accepted - 12 July 2022; Published online - 6 September 2022.This article presents managed honey bee colony loss rates over winter 2019/20 resulting
from using the standardised COLOSS questionnaire in 37 countries. Six countries were from
outside Europe, including, for the first time in this series of articles, New Zealand. The 30,491
beekeepers outside New Zealand reported 4.5% of colonies with unsolvable queen problems,
11.1% of colonies dead after winter and 2.6% lost through natural disaster. This gave
an overall colony winter loss rate of 18.1%, higher than in the previous year. The winter loss
rates varied greatly between countries, from 7.4% to 36.5%. 3216 beekeepers from New
Zealand managing 297,345 colonies reported 10.5% losses for their 2019 winter (six months
earlier than for other, Northern Hemisphere, countries). We modelled the risk of loss as a
dead/empty colony or from unresolvable queen problems, for all countries except New
Zealand. Overall, larger beekeeping operations with more than 50 colonies experienced significantly
lower losses (p<0.001). Migration was also highly significant (p<0.001), with
lower loss rates for operations migrating their colonies in the previous season. A higher proportion
of new queens reduced the risk of colony winter loss (p<0.001), suggesting that
more queen replacement is better. All three factors, operation size, migration and proportion
of young queens, were also included in a multivariable main effects quasi-binomial GLM and
all three remained highly significant (p<0.001). Detailed results for each country and overall
are given in a table, and a map shows relative risks of winter loss at the regional level.Dutch Ministry of Agriculture, Nature and Food Quality (BO-43-011.03-005);
Republic of Serbia, MPNTR-RS, through Grant No. III46002; Slovakia the project "Sustainable smart farming
systems taking into account the future challenges
313011W112"; Slovenian Research Program P1-0164; Danish Beekeepers Association for their funding and
support of the international LimeSurvey platform used by
many participating countries; “Zukunft Biene 2” (grant
number 101295/2) in Austria; University of Graz for open access
Honey bee colony loss rates in 37 countries using the COLOSS survey for winter 2019–2020 : the combined effects of operation size, migration and queen replacement
This article presents managed honey bee colony loss rates over winter 2019/20 resulting from using the standardised COLOSS questionnaire in 37 countries. Six countries were from outside Europe, including, for the first time in this series of articles, New Zealand. The 30,491 beekeepers outside New Zealand reported 4.5% of colonies with unsolvable queen problems, 11.1% of colonies dead after winter and 2.6% lost through natural disaster. This gave an overall colony winter loss rate of 18.1%, higher than in the previous year. The winter loss rates varied greatly between countries, from 7.4% to 36.5%. 3216 beekeepers from New Zealand managing 297,345 colonies reported 10.5% losses for their 2019 winter (six months earlier than for other, Northern Hemisphere, countries). We modelled the risk of loss as a dead/empty colony or from unresolvable queen problems, for all countries except New Zealand. Overall, larger beekeeping operations with more than 50 colonies experienced significantly lower losses (
Аналіз та динаміка популяції інвазивного виду павуків Spermophora senoculata (Duges, 1836)
A comparative analysis of a number, sex-and-age and morphometric structures of the population of the invasive species Spermophora senoculata (Duges, 1836) in conditions of Chernivtsi area and analysis of the population changes over the 6 years were carried out for the first time. These observations showed an increase in number of S. senoculata. Using some information from literature about the global spreading of S. senoculata it was established that the species is cosmopolitan, with possibility to expand the area in natural habitats, as well as in buildings.Впервые проведен сравнительный анализ относительной численности, половозрастной и морфометрических структур популяции инвазивного вида Spermophora senoculata (Duges, 1836) в условиях г. Черновцы и проанализированы изменения, произошедшие с представителями вида за шесть лет. Данные наблюдения показали увеличение относительной численности S. senoculatа. При обработке литературных сведений о находках S. senoculata, установлено, что вид является космополитом с тенденцией к расширению ареала как в естественных биотопах, так и в помещениях.Вперше проведено порівняльний аналіз відносної чисельності, статево-вікової і морфометричної структур популяції інвазивного виду Spermophora senoculata (Duges, 1836) в умовах м. Чернівці і проаналізовано зміни, що відбулися з популяцією за шість років. Дані спостереження показали збільшення відносної чисельності виду. При опрацюванні літературних відомостей щодо знахідок S. senoculata встановлено, що вид є космополітом із тенденцією до розширення ареалу як у природних біотопах, так і в будівлях
Bacteriota and Antibiotic Resistance in Spiders
Arthropods are reported to serve as vectors of transmission of pathogenic microorganisms to humans, animals, and the environment. The aims of our study were (i) to identify the external bacteriota of spiders inhabiting a chicken farm and slaughterhouse and (ii) to detect antimicrobial resistance of the isolates. In total, 102 spiders of 14 species were collected from a chicken farm, slaughterhouse, and buildings located in west Slovakia in 2017. Samples were diluted in peptone buffered water, and Tryptone Soya Agar (TSA), Triple Sugar Agar (TSI), Blood Agar (BA), and Anaerobic Agar (AA) were used for inoculation. A total of 28 genera and 56 microbial species were isolated from the samples. The most abundant species were Bacillus pumilus (28 isolates) and B. thuringensis (28 isolates). The least isolated species were Rhodotorula mucilaginosa (one isolate), Kocuria rhizophila (two isolates), Paenibacillus polymyxa (two isolates), and Staphylococcus equorum (two isolates). There were differences in microbial composition between the samples originating from the slaughterhouse, chicken farm, and buildings. The majority of the bacterial isolates resistant to antibiotics were isolated from the chicken farm. The isolation of potentially pathogenic bacteria such as Salmonella, Escherichia, and Salmonella spp., which possess multiple drug resistance, is of public health concern
Atmospheric deposition of nitrogen and sulphur in the Dniester catchment: the impact of war at a glance
Burning of fossil fuels, application of fertilisers, and livestock farming have greatly increased emissions of reactive nitrogen (N). The consequent increase in atmospheric deposition of N compounds has compromised air, soil and water quality, ecosystems, and human health and wellbeing. Sulphate aerosols also affect climate dynamics by scattering solar radiation, leading to surface cooling and, indirectly, cloud formation and precipitation. During 2021 (the pre-war year), the rates of total N deposition over the lower, middle and upper parts of the Dniester catchment were 21.8 ± 1.7, 17.0 and 19.0 ± 3.1 kgN/ha, respectively. The war in Ukraine brought a 35% decrease in annual total N deposition within the Lower Dniester region as a consequence of economic disruption and population displacement. In contrast, the influx of refugees and business relocation to the middle and upper parts of the basin counteracted the impacts of war, resulting in a slight increase (ca. 4%) or no change in cumulative total N deposition during 2022 compared to the pre-war year. The pre-war rates of sulphate deposition were 2.8 ± 0.1, 2.8 and 3.2 ± 0.1 kgS/ha for the lower, middle and upper basin: these were reduced 11–15%. These findings emphasise that local and regional factors interact. Peace is a prerequisite for reducing N emissions and safeguarding the environment
Results of Annual Monitoring of Honey Bee Colony Winter Losses in Ukraine: Winter 2019–2020
Purpose. To estimate honey bee (Apis mellifera Linnaeus, 1758) colony winter loss rate for Ukraine after the winter 2019–2020 in the context of international COLOSS survey.
Methods. Analysis of the results of the survey of Ukrainian beekeepers on A. mellifera colonies survival after the winter 2019-2020 by using the questionnaire developed by the coordinators of COLOSS international monitoring group. Unified approaches to data collection and statistical processing have been used. Valid protocols from 702 respondents from five physical-geographical zones of Ukraine have been analysed.
Results. Honey bee colony winter loss rates for Ukraine after the winter 2019-2020 was 9.29%, the mortality rate was 5.41 %; the losses due to unsolvable queen problems – 2.19 %, and due to natural disasters – 1.69 %. The total losses in the steppe zone of Ukraine were 16.08%, significantly exceeding this indicator in the forest-steppe zone (8.94%), the zone of deciduous forests (6.73%) and the Ukrainian Carpathians (8.14%). The most common sign of dead colonies in Ukraine was the presence of a large number of dead bees in or in front of the hive (31.3 %) and unknown symptoms (37,3 %).
The majority of Ukrainian beekeepers (50.7%) did not notice any difference in wintering of the colonies going into winter with a new queen in comparison with the old one. Among antivarroa drugs, the majority of respondents preferred products based on amitraz (fumigation – 50.8%, in plates – 15.7%) and flumethrin (20.0%). We confirmed statistically lower level of winter losses in colonies treated with amitraz (fumigation), whereas colonies treated with formic acid (long-term) had higher losses.
Conclusions. Honey bee (Apis mellifera Linnaeus, 1758) colony winter loss rate for Ukraine after the winter 2019–2020 was 9.29% and decreased slightly compared to the last year (11.18%) and the year before last (11.26%). It was almost twice lower than the average for the countries participating in COLOSS international monitoring (18,1%) (Gray, 2021).
The highest losses were observed in the steppe zone of Ukraine, whereas the lowest in the Ukrainian Carpathians. The smaller beekeeping operations with at most 50 colonies suffered significantly higher losses 12.66%) compared to medium and large ones (9.48% and 6.52%, respectively). The number of beekeepers treating colonies against varroosis was 90.6%, and all of them mentioned that they had pre-monitored the level of Varroa infestation