Associations among Nosema spp. fungi, Varroa destructor mites, and chemical treatments in honey bees, Apis mellifera

Little, Catherine M.; Shutler, Dave; Williams, Geoffrey R.

doi:10.1080/00218839.2016.1159068

Cited by 24 publications

(18 citation statements)

References 67 publications

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“…The relationship between N. ceranae infection and V. destructor , an important vector of DWV, is also unclear. Indeed, although one study found a positive correlation between Nosema and varroa in commercial apiaries pretreated against both (Little et al ., ), others did not observe any correlation between these two pathogens but signalled an emerging genotype B of DWV as linked to overwinter worker losses (Natsopoulou et al ., ). In this respect, the infection by N. ceranae has been related to a reduced efficacy of varroa treatments (Botías et al ., ).…”

Section: What Are the Major Effects Of N Ceranae On Honey Bees?mentioning

confidence: 99%

Nosema ceranae in Apis mellifera: a 12 years postdetection perspective

Martín-Hernández

Bartolomé

Chejanovsky

et al. 2018

Environmental Microbiology

161

118

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Nosema ceranae is a hot topic in honey bee health as reflected by numerous papers published every year. This review presents an update of the knowledge generated in the last 12 years in the field of N. ceranae research, addressing the routes of transmission, population structure and genetic diversity. This includes description of how the infection modifies the honey bee's metabolism, the immune response and other vital functions. The effects on individual honey bees will have a direct impact on the colony by leading to losses in the adult's population. The absence of clear clinical signs could keep the infection unnoticed by the beekeeper for long periods. The influence of the environmental conditions, beekeeping practices, bee genetics and the interaction with pesticides and other pathogens will have a direct influence on the prognosis of the disease. This review is approached from the point of view of the Mediterranean countries where the professional beekeeping has a high representation and where this pathogen is reported as an important threat.

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Section: What Are the Major Effects Of N Ceranae On Honey Bees?mentioning

confidence: 99%

Nosema ceranae in Apis mellifera: a 12 years postdetection perspective

Martín-Hernández

Bartolomé

Chejanovsky

et al. 2018

Environmental Microbiology

161

118

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“…Implications of interacting stressors on honey bee colony health are generally studied by monitoring studies (Genersch et al 2010, Francis et al 2013, Meixner et al 2014, Van der Zee et al 2015, Tsvetkov et al 2017 or in response to parasite treatments (Little et al 2015). However, experimental exposure to combined stressors at (partly) a colony level is still relatively rare (Alaux et al 2011, Mariani et al 2012, Pettis et al 2012, Blanken et al 2015.…”

Section: Introductionmentioning

confidence: 99%

Single and interactive effects of Varroa destructor, Nosema spp., and imidacloprid on honey bee colonies (Apis mellifera)

et al. 2018

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Citation: van Dooremalen, C., B. Cornelissen, C. Poleij-Hok-Ahin, and T. Blacqui ere. 2018. Single and interactive effects of Varroa destructor, Nosema spp., and imidacloprid on honey bee colonies (Apis mellifera). Ecosphere 9(8):Abstract. High losses of honey bee colonies in recent decades are of great societal and economical concern and experienced as a sign of the vulnerability of the environment, including the service of crop pollination, and of the beekeeping sector. There is no single cause for the colony losses, but many contributing stressors may act in concert. Varroa destructor infestation is acknowledged as an important cause of these losses. The roles of infestation by Nosema ceranae or exposure to insecticides are controversial. Interactions between exposure to pesticides and V. destructor or Nosema spp. have previously been implicated. In two years of field experiments, we studied the effects of and possible interactions between the stressors V. destructor infestation, Nosema spp. infestation, and chronic sublethal exposure to a field-realistic dose of the insecticide imidacloprid on the performance and survival of honey bee colonies. Colonies highly infested by V. destructor were 13% smaller in size and were 59.1 times more likely to die than colonies infested with low levels of V. destructor. Infestation with high levels of Nosema sp. led to 2% decrease in size and 1.4 times higher likelihood to die compared to colonies with low levels of Nosema sp. No effects of chronic sublethal exposure to imidacloprid on colony size or survival were found in this study. Exposure to V. destructor and imidacloprid led to a slightly higher fraction of bees infested with Nosema sp., but in contrast to the expectations, no resulting interactions were found for colony size or survival. Colonies as a superorganism may well be able to compensate at the colony level for sublethal negative effects of stressors on their individuals. In our experimental study under field-realistic exposure to stressors, V. destructor was by far the most lethal one for honey bee colonies.

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“…For example, Botías et al [58] reported that N. ceranae infection was highly pathogenic for honey bee colonies, causing significant reductions in colony size, brood rearing, and honey production. Other studies have concluded that the nosemosis can synergize with other risk factors including environment, pesticides, viruses, diet and Varroa [59,60,61].…”

Section: Discussionmentioning

confidence: 99%

Effect of Abscisic Acid (ABA) Combined with Two Different Beekeeping Nutritional Strategies to Confront Overwintering: Studies on Honey Bees’ Population Dynamics and Nosemosis

Szawarski

Sáez

Domínguez

et al. 2019

Insects

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In temperate climates, beekeeping operations suffer colony losses and colony depopulation of Apis mellifera during overwintering, which are associated with biotic and abiotic stressors that impact bees’ health. In this work, we evaluate the impacts of abscisic acid (ABA) dietary supplementation on honey bee colonies kept in Langstroth hives. The effects of ABA were evaluated in combination with two different beekeeping nutritional strategies to confront overwintering: “honey management” and “syrup management”. Specifically, we evaluated strength parameters of honey bee colonies (adult bee and brood population) and the population dynamics of Nosema (prevalence and intensity) associated with both nutritional systems and ABA supplementation during the whole study (late autumn-winter-early spring). The entire experiment was designed and performed with a local group of beekeepers, “Azahares del sudeste”, who showed interest in answering problems associated with the management of honey bee colonies during the winter. The results indicated that the ABA supplementation had positive effects on the population dynamics of the A. mellifera colonies during overwintering and on the nosemosis at colony level (prevalence) in both nutritional strategies evaluated.

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Associations among Nosema spp. fungi, Varroa destructor mites, and chemical treatments in honey bees, Apis mellifera

Cited by 24 publications

References 67 publications

Nosema ceranae in Apis mellifera: a 12 years postdetection perspective

Nosema ceranae in Apis mellifera: a 12 years postdetection perspective

Single and interactive effects of Varroa destructor, Nosema spp., and imidacloprid on honey bee colonies (Apis mellifera)

Effect of Abscisic Acid (ABA) Combined with Two Different Beekeeping Nutritional Strategies to Confront Overwintering: Studies on Honey Bees’ Population Dynamics and Nosemosis

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