Susceptibility of Bee Larvae to Chalkbrood in Relation to Hygienic Behaviour of Worker Bees in Colonies of Chosen Races of Honeybee (Apis Mellifera )

Panasiuk, Beata; Bieńkowska, Małgorzata; Gerula, Dariusz; Węgrzynowicz, Paweł

doi:10.2478/jas-2014-0012

Cited by 7 publications

(6 citation statements)

References 25 publications

(30 reference statements)

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“…FKB and FKB* are two ways to measure the same trait, i.e., the dead removal ability of a bee colony. We did not investigate in this study the correlation of HB with the biological trait of interest as previous reports showed that HB can be used as a proxy to select colonies for resistance to main brood pathogens (Spivak and Reuter, 2001;Panasiuk et al 2008;Panasiuk et al 2014). FKB* requires less time and liquid nitrogen and has a smaller measurement error, resulting in a slightly higher repeatability.…”

Section: Resultsmentioning

confidence: 99%

Hygienic behaviour in honeybees: a comparison of two recording methods and estimation of genetic parameters

et al. 2019

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Hygienic behaviour (HB) in honeybees reflects social immunity against diseases and parasites. Young bees showing HB detect, uncap, and remove infested brood from a colony. We developed a new variant of freezekilled brood (FKB*) test to optimise the duration of the HB test, the costs, and safety for the operator. In 2016, we performed a comparison between traditional FKB and FKB* on 25 unselected and unrelated colonies in the apiary of the University of Milano. To estimate repeatability and heritability, in 2017 and 2018, FKB* was used to phenotype, respectively, 56 and 95 colonies twice, in the context of a breeding programme. FKB* took less time and required a smaller amount of liquid nitrogen. The two methods showed a correlation between colony effects of 0.93, indicating that they measure the same trait. For single records, the phenotypic correlation between both methods was 0.64. Estimated heritability and repeatability for single records HB were 0.23 and 0.24, respectively, whilst heritability for the average HB value of two records was 0.37. honeybee / hygienic behaviour / freeze-killed brood test / repeatability / heritabilityCorresponding author: E. Facchini,

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Section: Resultsmentioning

confidence: 99%

Hygienic behaviour in honeybees: a comparison of two recording methods and estimation of genetic parameters

et al. 2019

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“…Thus, at day 9, there was a high proportion of strong grooming. Panasiuk et al demonstrated that hygienic behaviors involve bees across various age ranges but are more commonly observed between 6 to 10 and 16 to 21 of age [ 21 ]. Pettis and Pankiw studied the role of grooming behavior in bees based on the bees’ age, revealing that approximately 90% of grooming behavior occurred in bees between 5 and 15 days old [ 22 ].…”

Section: Discussionmentioning

confidence: 99%

Comparison of Brain Gene Expression Profiles Associated with Auto-Grooming Behavior between Apis cerana and Apis mellifera Infested by Varroa destructor

Liao,

Wan,

Lü

et al. 2024

Genes

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The grooming behavior of honeybees serves as a crucial auto-protective mechanism against Varroa mite infestations. Compared to Apis mellifera, Apis cerana demonstrates more effective grooming behavior in removing Varroa mites from the bodies of infested bees. However, the underlying mechanisms regulating grooming behavior remain elusive. In this study, we evaluated the efficacy of the auto-grooming behavior between A. cerana and A. mellifera and employed RNA-sequencing technology to identify differentially expressed genes (DEGs) in bee brains with varying degrees of grooming behavior intensity. We observed that A. cerana exhibited a higher frequency of mite removal between day 5 and day 15 compared to A. mellifera, with day-9 bees showing the highest frequency of mite removal in A. cerana. RNA-sequencing results revealed the differential expression of the HTR2A and SLC17A8 genes in A. cerana and the CCKAR and TpnC47D genes in A. mellifera. Subsequent homology analysis identified the HTR2A gene and SLC17A8 gene of A. cerana as homologous to the HTR2A gene and SLC17A7 gene of A. mellifera. These DEGs are annotated in the neuroactive ligand–receptor interaction pathway, the glutamatergic synaptic pathway, and the calcium signaling pathway. Moreover, CCKAR, TpnC47D, HTR2A, and SLC17A7 may be closely related to the auto-grooming behavior of A. mellifera, conferring resistance against Varroa infestation. Our results further explain the relationship between honeybee grooming behavior and brain function at the molecular level and provide a reference basis for further studies of the mechanism of honeybee grooming behavior.

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“…In addition to negatively affecting the growth and production of colonies, pathogens and diseases cause significant economic losses for beekeepers (Panasiuk et al, 2014), and some management practices can be used to mitigate colony losses. Berry & Delaplane ( 2001) suggested replacing old honeycombs or those with symptoms of A. apis as an initial management technique to eliminate spores from the hive.…”

Section: Management Strategies To Reduce Risk Of Colony Lossesmentioning

confidence: 99%

Etiology, symptoms and prevention of chalkbrood disease: a literature review

Castagnino

Mateos

Meana

et al. 2020

Rev. bras. saúde prod. anim.

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The fungus Ascosphaera apis, responsible for causing the chalkbrood disease of honey bees, is widely present in temperate regions of the northern hemisphere, but has also spread to other regions of the world such as Brazil. Although it is not usually lethal for the colony, it can reduce its population, hampering its development. This study is a review on the disease that presents a broad overview of its development, identification methods as well as ways to control it. Research shows that chalkbrood is associated with several factors and is most frequently found in colonies of Apis bees during the spring, when there is excess humidity and sudden temperature changes in the hive. Other factors such as viral or bacterial infection, the presence of the ectoparasite Varroa destructor, pesticide poisoning and poor nutrition of nurse bees can also affect its incidence and severity. Field diagnosis is made based on the presence of hardened mummified brood in the pupal stage, of white or black color, in the cells and entrance. Affected cells show dead pupae covered with white mycelia, resembling cotton, or hardened, dry and brittle, resembling chalk pieces, which originated the name. To date, there are no efficient methods to reduce the damage caused by chalkbrood. Genetic selection of bees with higher hygienic behavior and disease resistance is recommended.

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Susceptibility of Bee Larvae to Chalkbrood in Relation to Hygienic Behaviour of Worker Bees in Colonies of Chosen Races of Honeybee (Apis Mellifera )

Cited by 7 publications

References 25 publications

Hygienic behaviour in honeybees: a comparison of two recording methods and estimation of genetic parameters

Hygienic behaviour in honeybees: a comparison of two recording methods and estimation of genetic parameters

Comparison of Brain Gene Expression Profiles Associated with Auto-Grooming Behavior between Apis cerana and Apis mellifera Infested by Varroa destructor

Etiology, symptoms and prevention of chalkbrood disease: a literature review

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