S-dinotefuran affects the social behavior of honeybees (Apis mellifera)and increases their risk in the colony

Zhang, Fu; Cao, Wenjing; Zhang, Yongheng; Luo, Jie; Hou, Jiangan; Chen, Lichao; Yi, Guoqiang; Li, Honghong; Huang, Mingfeng; Dong, Linxi; Li, Xuesheng

doi:10.1016/j.pestbp.2023.105594

Cited by 5 publications

(1 citation statement)

References 57 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…During this collection process, honeybees inevitably interact with either beneficial or harmful substances in the ecosystem, such as microbes, parasites, and fungal spores, which they then carry to the hive [ 8 , 9 ]. Honeybees live in large social colonies, with thousands of individuals living together; they exhibit trophallaxis and nursing behaviors [ 10 , 11 ], which makes it easy for microbes to spread in honeybee colonies. Additionally, honeybee products can also be contaminated with foreign substances the honeybees bring in, such as dust and airborne microbes [ 12 , 13 ].…”

Section: Introductionmentioning

confidence: 99%

A New Isolated Fungus and Its Pathogenicity for Apis mellifera Brood in China

Aynalem,

Meng,

Getachew

et al. 2024

Microorganisms

View full text Add to dashboard Cite

In this article, we report the pathogenicity of a new strain of fungus, Rhizopus oryzae to honeybee larvae, isolated from the chalkbrood-diseased mummies of honeybee larvae and pupae collected from apiaries in China. Based on morphological observation and internal transcribed spacer (ITS) region analyses, the isolated pathogenic fungus was identified as R. oryzae. Koch’s postulates were performed to determine the cause-and-effect pathogenicity of this isolate fungus. The in vitro pathogenicity of this virulent fungus in honeybees was tested by artificially inoculating worker larvae in the lab. The pathogenicity of this new fungus for honeybee larvae was both conidial-concentration and exposure-time dependent; its highly infectious and virulent effect against the larvae was observed at 1 × 105 conidia/larva in vitro after 96 h of challenge. Using probit regression analysis, the LT50 value against the larvae was 26.8 h at a conidial concentration of 1 × 105 conidia/larva, and the LC50 was 6.2 × 103 conidia/larva. These results indicate that the new isolate of R. oryzae has considerable pathogenicity in honeybee larvae. Additionally, this report suggests that pathogenic phytofungi may harm their associated pollinators. We recommend further research to quantify the levels, mechanisms, and pathways of the pathogenicity of this novel isolated pathogen for honeybee larvae at the colony level.

show abstract