Oxidative Stress, Endoparasite Prevalence and Social Immunity in Bee Colonies Kept Traditionally vs. Those Kept for Commercial Purposes

Tarić, Elmin; Glavinić, Uroš; Vejnović, Branislav; Stanojković, Aleksandar; Aleksić, Nevenka; Dimitrijević, Vojin; Stanimirović, Zoran

doi:10.3390/insects11050266

Cited by 19 publications

(12 citation statements)

References 69 publications

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“…This probably corresponds with a high density of bee colonies in the landscape [92] because the number of bee colonies per km 2 in the Czech Republic is one of the highest in the world (>8 honey bee colonies/km 2 ) [93]. According to these results, Taric [94] also found a higher parasitic burden in commercially kept colonies than traditionally kept colonies, which are mostly situated in natural areas. The richness of individual pathogens was in the same trend, where only two eukaryotic pathogens were present in the national parks.…”

Section: Discussionmentioning

confidence: 86%

Screening of Honey Bee Pathogens in the Czech Republic and Their Prevalence in Various Habitats

Mráz

Hýbl

Kopecký

et al. 2021

Insects

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Western honey bee (Apis mellifera) is one of the most important pollinators in the world. Thus, a recent honey bee health decline and frequent honey bee mass losses have drawn attention and concern. Honey bee fitness is primarily reduced by pathogens, parasites, and viral load, exposure to pesticides and their residues, and inadequate nutrition from both the quality and amount of food resources. This study evaluated the prevalence of the most common honey bee pathogens and viruses in different habitats across the Czech Republic. The agroecosystems, urban ecosystems, and national park were chosen for sampling from 250 colonies in 50 apiaries. Surprisingly, the most prevalent honey bee pathogens belong to the family Trypanosomatidae including Lotmaria passim and Crithidia mellificae. As expected, the most prevalent viruses were DWV, followed by ABPV. Additionally, the occurrence of DWV-B and DWV-C were correlated with honey bee colony mortality. From the habitat point of view, most pathogens occurred in the town habitat, less in the agroecosystem and least in the national park. The opposite trend was observed in the occurrence of viruses. However, the prevalence of viruses was not affected by habitat.

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Section: Discussionmentioning

confidence: 86%

Screening of Honey Bee Pathogens in the Czech Republic and Their Prevalence in Various Habitats

Mráz

Hýbl

Kopecký

et al. 2021

Insects

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“…Conflicting results from different studies can be attributed to many factors, such as the biological characteristics of honey bees (caste, age of the bees, commercially and traditionally managed bees) [31,32], the genetic diversity of honey bees, bee subspecies and lineages [24,[33][34][35], climatic and environmental differences [7,18,36], beekeeping practices [10], as well as diagnostic methods [37] and research conditions (number of analyzed bees, time and method of sampling, natural population research or experiment) [31,38,39]. Nosema species can only be confirmed using molecular methods [39], which can have different levels of resolution, for example, the single-copy Hsp70 gene method qPCR detects a lower amount of N. ceranae copies compared to the multicopy 16S rRNA gene method [37].…”

Section: Introductionmentioning

confidence: 99%

Prevalence of the Microsporidian Nosema spp. in Honey Bee Populations (Apis mellifera) in Some Ecological Regions of North Asia

Ostroverkhova

Konusova

Кучер

et al. 2020

Veterinary Sciences

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Two species of microsporidia, Nosema apis and Nosema ceranae, are obligate intracellular parasites that are widespread in the world and cause the infectious disease (Nosemosis) of the Western honey bee Apis mellifera. Information on the prevalence and distribution of Nosema species in North Asia conditions is scarce. The main aim of the present study is to determine the prevalence of Nosema spp. (Nosemosis) in honey bees inhabiting some inland regions of North Asia (Western and Eastern Siberia, Altai Territory, Russia, and northeastern part of Kazakhstan). The objective of the paper is also to assess the influence of climatic factors on the spread of N. ceranae. Eighty apiaries in four ecological regions of North Asia (southern taiga, sub-taiga zone, forest steppe, and mountain taiga forests) were investigated with regard to distribution, prevalence, and diversity of Nosema infection in honey bees using duplex-PCR. Nosema infected bees were found in 65% apiaries of ecoregions studied, and coinfection was predominant (36.3% of Nosema-positive apiaries). Both N. apis and N. ceranae occur across subarctic and warm summer continental climates, but while N. apis predominates in the former, N. ceranae is more predominant in the latter. No statistically significant differences in Nosema distribution were identified in various climatic zones. In the sub-taiga zone (subarctic climate), low presence of colonies with pure N. ceranae and a significantly higher proportion of coinfection apiaries were revealed. Long-term epidemiological study of Nosema spp. prevalence in the sub-taiga zone showed a surprising percentage increase of Nosema-positive apiaries from 46.2% to 74.1% during 2012–2017. From 2012 to 2015, N. apis became a predominant species, but in 2016–2017, the coinfection was mainly detected. In conclusion, the results of this investigation showed that N. ceranae is widespread in all study ecoregions of North Asia where it exists in combination with the N. apis, but there is no replacement of N. apis by N. ceranae in the studied bee populations.

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“…Additionally, the results support our hypothesis that these oxidative stress levels differ between the feral and managed bee colonies. Only a few studies have shown different MDA levels between commercial and traditional colonies in trmka hives without human manipulation, similar to feral colony conditions ( Taric et al 2020 ), which may be an indication of anthropogenic influence or manipulation. The data presented here provide unique information on the life span and oxidative stress of foragers among feral honey bees.…”

Section: Discussionmentioning

confidence: 99%

“…However, the mechanisms underlying this variation have not been elucidated. Specifically, survival advantages during an acute oxidative stress event or the normal life history could be conferred by prevention, repair, or tolerance of the molecular damage ( Guzmán-Novoa et al 1994 ; Rueppell et al 2007 ; Li-Byarlay et al 2016 ; Taric et al, 2019 , 2020 ; Li-Byarlay and Cleare 2020 ). Feral or wild honey bee colonies live in a nonmanaged environment and are under natural selection.…”

mentioning

confidence: 99%

The Life Span and Levels of Oxidative Stress in Foragers Between Feral and Managed Honey Bee Colonies

Ward

Cleare

Li-Byarlay

2022

Journal of Insect Science

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Molecular damage caused by oxidative stress may lead to organismal aging and result in acute mortality to organisms. Thus, oxidative stress resistance and longevity are closely linked. Honey bees (Apis mellifera) are the most important managed pollinator in agriculture, but the long-term survival of honey bees is seriously threatened. Feral honey bee colonies can be used as natural resources to improve honey bee health. One question we ask here is whether feral honey bees are stress resistant or survive longer than managed bee populations. More work is needed to determine the impact of oxidative stress on honey bee health and survival. In this study, we used paired colony designs to compare the life span of worker bees (foragers) between feral and managed colonies and their levels of oxidative stress. Each pair of colonies shared similar foraging resources. The results indicated that foragers in feral colonies had longer survival times and life spans than those in managed colonies. The levels of oxidative stress from lipid damage content in feral colonies were higher than those in managed colonies, indicating that they used a tolerance mechanism rather than a repair mechanism to survive. Our study provides new insights into a colony difference in the physiology and oxidative stress resistance of feral honey bees compared with managed colony stocks.

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Oxidative Stress, Endoparasite Prevalence and Social Immunity in Bee Colonies Kept Traditionally vs. Those Kept for Commercial Purposes

Cited by 19 publications

References 69 publications

Screening of Honey Bee Pathogens in the Czech Republic and Their Prevalence in Various Habitats

Screening of Honey Bee Pathogens in the Czech Republic and Their Prevalence in Various Habitats

Prevalence of the Microsporidian Nosema spp. in Honey Bee Populations (Apis mellifera) in Some Ecological Regions of North Asia

The Life Span and Levels of Oxidative Stress in Foragers Between Feral and Managed Honey Bee Colonies

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