Sex-specific developmental profiles of juvenile hormone synthesis in honey bee larvae

1993 ◽  
Vol 202 (3) ◽  
pp. 176-180 ◽  
Author(s):  
Klaus Hartfelder ◽  
Sibele Oliveira Tozetto ◽  
Anna Rachinsky
Keyword(s):  
Juvenile Hormone ◽  
Honey Bee ◽  
Hormone Synthesis ◽  
Developmental Profiles ◽  
Honey Bee Larvae

scholarly journals Juvenile hormone pathway in honey bee larvae: A source of possible signal molecules for the reproductive behavior of Varroa destructor

2020 ◽  
Author(s):  
Cristian M. Aurori ◽  
Alexandru‐Ioan Giurgiu ◽  
Benjamin H. Conlon ◽  
Chedly Kastally ◽  
Daniel S. Dezmirean ◽  
...  
Keyword(s):  
Juvenile Hormone ◽  
Honey Bee ◽  
Reproductive Behavior ◽  
Varroa Destructor ◽  
Signal Molecules ◽  
Honey Bee Larvae

scholarly journals The Comparison of Juvenile Hormone and Transcriptional Changes between Three Different Juvenile Hormone Analogs Insecticides on Honey Bee Worker Larval’s Development

Agronomy ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 2497
Author(s):  
Jie Luo ◽  
Sheng Liu ◽  
Jiangan Hou ◽  
Lichao Chen ◽  
Honghong Li ◽  
...  
Keyword(s):  
Juvenile Hormone ◽  
Honey Bee ◽  
Molecular Mechanisms ◽  
Treatment Groups ◽  
Genes Encoding ◽  
Transcriptional Changes ◽  
New Perspective ◽  
Hormone Analogs ◽  
Honey Bee Larvae

Juvenile hormones (JHs) play a crucial role in the development of honey bee (Apis mellifera) worker larvae. Juvenile hormone analogs (JHAs), insecticides widely used in pest control, have been reported to affect the health and survival of honey bee worker larvae. However, the molecular mechanisms of JHAs in the honey bee remain unclear. In this study, we treated honey bee worker larvae with pyriproxyfen, fenoxycarb, and methoprene, three different JHAs. We monitored the changes in the transcription of genes encoding major JH response enzymes (CYP15A1, CYP6AS5, JHAMT, and CHT1) using RT-qPCR and analyzed the transcriptome changes in worker larvae under JHA stress using RNA-seq. We found that the enrichment pathways differed among the treatment groups, but the classification of each pathway was generally the same, and fenoxycarb affected more genes and more pathways than did the other two JHAs. Notably, treatment with different JHAs in the honey bee changed the JH titers in the insect to various extents. These results represent the first assessment of the effects of three different JHAs on honey bee larvae and provide a new perspective and molecular basis for the research of JH regulation and JHA toxicity in the honey bee.

Identification and Treatment of European Foulbrood in Honey Bee Colonies

EDIS ◽  
2020 ◽  
Vol 2020 (1) ◽  
pp. 7
Author(s):  
Catherine M. Mueller ◽  
Cameron Jack ◽  
Ashley N. Mortensen ◽  
Jamie D. Ellis
Keyword(s):  
Honey Bee ◽  
Bacterial Disease ◽  
American Foulbrood ◽  
Fact Sheet ◽  
European Foulbrood ◽  
Bee Colonies ◽  
Honey Bee Larvae

European foulbrood is a bacterial disease that affects Western honey bee larvae. It is a concern to beekeepers everywhere, though it is less serious than American foulbrood because it does not form spores, which means that it can be treated. This 7-page fact sheet written by Catherine M. Mueller, Cameron J. Jack, Ashley N. Mortensen, and Jamie Ellis and published by the UF/IFAS Entomology and Nematology Department describes the disease and explains how to identify it to help beekeepers manage their colonies effectively and prevent the spread of both American and European foulbrood.https://edis.ifas.ufl.edu/in1272

Juvenile Hormone, Behavioral Maturation, and Brain Structure in the Honey Bee

1996 ◽  
Vol 18 (1-2) ◽  
pp. 102-114 ◽  
Author(s):  
Susan E. Fahrbach ◽  
Gene E. Robinson
Keyword(s):  
Juvenile Hormone ◽  
Honey Bee ◽  
Brain Structure ◽  
Behavioral Maturation

A Method of Rearing Honey Bee Larvae in vitro1

1955 ◽  
Vol 48 (1) ◽  
pp. 43-44 ◽  
Author(s):  
A. S. Michael ◽  
M. Abramovitz
Keyword(s):  
Honey Bee ◽  
Honey Bee Larvae

scholarly journals Transcriptional Control of Honey Bee (Apis mellifera) Major Royal Jelly Proteins by 20-Hydroxyecdysone

Insects ◽  
2018 ◽  
Vol 9 (3) ◽  
pp. 122 ◽  
Author(s):  
Paul Winkler ◽  
Frank Sieg ◽  
Anja Buttstedt
Keyword(s):  
Gene Expression ◽  
Apis Mellifera ◽  
Juvenile Hormone ◽  
Honey Bee ◽  
Honey Bees ◽  
Transcriptional Control ◽  
Royal Jelly ◽  
Adult Worker ◽  
Gene Expression Dynamics

One of the first tasks of worker honey bees (Apis mellifera) during their lifetime is to feed the larval offspring. In brief, young workers (nurse bees) secrete a special food jelly that contains a large amount of unique major royal jelly proteins (MRJPs). The regulation of mrjp gene expression is not well understood, but the large upregulation in well-fed nurse bees suggests a tight repression until, or a massive induction upon, hatching of the adult worker bees. The lipoprotein vitellogenin, the synthesis of which is regulated by the two systemic hormones 20-hydroxyecdysone and juvenile hormone, is thought to be a precursor for the production of MRJPs. Thus, the regulation of mrjp expression by the said systemic hormones is likely. This study focusses on the role of 20-hydroxyecdysone by elucidating its effect on mrjp gene expression dynamics. Specifically, we tested whether 20-hydroxyecdysone displayed differential effects on various mrjps. We found that the expression of the mrjps (mrjp1–3) that were finally secreted in large amounts into the food jelly, in particular, were down regulated by 20-hydroxyecdysone treatment, with mrjp3 showing the highest repression value.

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