Coexistence between selected pathogens in honey bee workers

Michalczyk, Maria; Sokół, Rajmund; Bancerz‐Kisiel, Agata

doi:10.1080/00218839.2021.1994261

Cited by 4 publications

(3 citation statements)

References 29 publications

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“…The infection loads, together with the temporal prevalence patterns, suggest a recent establishment of N. ceranae on these two varroa-free islands, and now the pathogen is rapidly spreading, showing the typical behaviour of an emergent pathogen, with an increase in the prevalence and in the level of infection. Therefore, despite the positive association between V. destructor and N. ceranae prevalence detected in an earlier stage of the invasion (2014/2015), and also reported in other studies [ 53 , 54 , 55 , 56 , 57 ], these findings suggest that the mite is not a mandatory condition for a successful invasion of the pathogen.…”

Section: Discussioncontrasting

confidence: 59%

“…While V. destructor and N. ceranae are serious pests for a colony [ 32 , 51 , 52 ], when they are simultaneously present, it is possible that their impact is further aggravated by a summative or synergistic interaction. Whether this interaction exists is unclear, although some studies have found a positive correlation between the two parasites [ 53 , 54 , 55 , 56 , 57 ]. In the event that N. ceranae is detected, then the Azores provide a unique stage for addressing this issue because there are islands where the mite is present and islands that are mite free.…”

Section: Introductionmentioning

confidence: 99%

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Colonisation Patterns of Nosema ceranae in the Azores Archipelago

Lopes

Martín-Hernández

Higes

et al. 2022

Veterinary Sciences

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Nosema ceranae is a highly prevalent pathogen of Apis mellifera, which is distributed worldwide. However, there may still exist isolated areas that remain free of N. ceranae. Herein, we used molecular tools to survey the Azores to detect N. ceranae and unravel its colonisation patterns. To that end, we sampled 474 colonies from eight islands in 2014/2015 and 91 from four islands in 2020. The findings revealed that N. ceranae was not only present but also the dominant species in the Azores. In 2014/2015, N. apis was rare and N. ceranae prevalence varied between 2.7% in São Jorge and 50.7% in Pico. In 2020, N. ceranae prevalence increased significantly (p < 0.001) in Terceira and São Jorge also showing higher infection levels. The spatiotemporal patterns suggest that N. ceranae colonised the archipelago recently, and it rapidly spread across other islands, where at least two independent introductions might have occurred. Flores and Santa Maria have escaped the N. ceranae invasion, and it is remarkable that Santa Maria is also free of Varroa destructor, which makes it one of the last places in Europe where the honey bee remains naive to these two major biotic stressors.

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Section: Discussioncontrasting

confidence: 59%

Section: Introductionmentioning

confidence: 99%

Colonisation Patterns of Nosema ceranae in the Azores Archipelago

Lopes

Martín-Hernández

Higes

et al. 2022

Veterinary Sciences

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“…During the study, honey bee trypanosomatids were also monitored knowing their common coexiste nce with Nosema sp. microsporidia [80][81][82].…”

Section: Introductionmentioning

confidence: 99%

Diet Supplementation Helps Honey Bee Colonies in Combat Infections by Enhancing their Hygienic Behaviour

et al. 2022

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The hygienic behavior in honey bees is a complex polygenic trait that serves as a natural defense mechanism against bacterial and fungal brood diseases and Varroa destructor mites infesting brood cells. The aim of this study was to evaluate the effect of a dietary amino acids and vitamins supplement “BEEWELL AminoPlus” on hygienic behavior of Apis mellifera colonies combating microsporidial and viral infections. The experiment was performed during a one-year period on 40 colonies alloted to five groups: one supplemented and infected with Nosema ceranae and four viruses (Deformed wing virus - DWV, Acute bee paralysis virus - ABPV, Chronic bee paralysis virus - CBPV and Sacbrood virus – SBV), three not supplemented, but infected with N. ceranae and/ or viruses, and one negative control group. Beside the l isted pathogens, honey bee trypanosomatids were also monitored in all groups. The supplement “BEEWELL AminoPlus” induced a significant and consistent increase of the hygienic behavior in spite of the negative effects of N. ceranae and viral infections. N. ceranae and viruses significantly and consistently decreased hygienic behavior, but also threatened the survival of bee colonies. The tested supplement showed anti-Nosema effect, since the N. ceranae infection level significantly and consistently declined only in the supplemented group. Among infected groups, only the supplemented one remained Lotmaria passim-free throughout the study. In conclusion, diet supplementation enhances hygienic behavior of honey bee colonies and helps them fight the most common infections of honey bees.

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