Browse
Submit Data
Databases
API
Help

Dataset Information

0 Views

0 Connections

0 Citations

0 Reanalyses

0 Downloads

Omics score: 0

Costs of reproduction and their effect on age-related gene expression in Bombus terrestris queens

ABSTRACT: Our two main aims were 1) to isolate age-related changes in gene expression in queens of the eusocial bumble bee, Bombus terrestris; and 2) to determine whether experimentally increasing the costs of reproduction (by removing eggs) caused changes in age-related gene expression in these queens. To address these aims we extracted RNA from three key tissues (brain, fat body and ovary) from queens at two time points (10% and 60% mortality phases). Each of these queens had experienced one of two treatments: an egg removal (R) treatment (to increase the costs of reproduction) and an egg removal and replacement (C) treatment (to control for the effects of disturbance caused by egg removal).

ORGANISM(S): Bombus terrestris

PROVIDER: GSE172422 | GEO | 2023/06/06

REPOSITORIES: GEO

ACCESS DATA

Json Xml

Dataset's files

Source:

			Action	DRS
		Other

Items per page:

1 - 1 of 1

Similar Datasets

MiRNAs in the genomes of Bombus terrestris and Bombus impatiens

Project description:Our aims in this study were: 1) to identify the miRNAs of the bumble bees Bombus terrestris and B. impatiens; 2) to compare the total numbers of miRNAs between both bumble bee species and between them and the honey bee, Apis mellifera; and 3) to test whether the sequences and expression patterns of miRNAs were conserved between species. To investigate each of these aims we used miRNA-seq (deep sequencing of miRNA-enriched libraries) in B. terrestris, and bioinformatics prediction programs to identify miRNAs in both Bombus species. We identified 131 miRNAs in B. terrestris, and 114 in B. impatiens; of these, 17 were new miRNAs that had not previously been sequenced in any species. We found a striking level of difference in the miRNAs present between Bombus and A. mellifera, with 103 miRNAs in A. mellifera not being present in the genomes of the two bumble bees. miRNA profiles of Bombus terrestris at two developmental stages in larvae. This submission represents 'Bombus terrestris' component of study.

2015-03-06 | E-GEOD-64512 | biostudies-arrayexpress

MiRNAs in the genomes of Bombus terrestris and Bombus impatiens

2015-03-06 | GSE64512 | GEO

Social Regulation of Maternal Traits in Nest-Founding Bumble Bee (Bombus terrestris) Queens

Project description:During the nest-founding phase of the bumble bee colony cycle, queens undergo striking changes in maternal care behavior. Early in the founding phase, prior to the emergence of workers in the nest, queens are reproductive and also provision and feed their offspring. However, later in the founding phase, queens cease feeding offspring and become specialized on reproduction. This transition is synchronized with the emergence of workers in the colony, who assume the task of feeding their siblings. Using a social manipulation experiment, we tested the hypothesis that workers socially regulate the transition from feeding brood to specialization on reproduction in nest-founding bumble bee queens. Consistent with this hypothesis, we found that early-stage queens with workers prematurely added to their nests reduce their brood-feeding behavior and increase egg-laying, and likewise, late-stage queens increase their brood-feeding behavior and decrease egg-laying when workers are removed from their nests. Further, brood-feeding and egg-laying behavior were negatively correlated in these queens. We used an Agilent brain EST-based microarray to explore a second hypothesis, that workers alter brain gene expression in nest-founding queens. We found evidence that brain gene expression in nest-founding queens is altered by the presence of workers, with the effect much stronger in late-stage founding queens. Additionally, expression levels of some genes were correlated with quantitative differences in brood-feeding and egg-laying behavior. This study provides new insights into how the transition from feeding brood to specialization on reproduction in bumble bee queens is regulated during the nest initiation phase of the colony cycle.

2014-06-21 | E-MTAB-1855 | biostudies-arrayexpress

Substances in the mandibular glands mediate queen manipulation of larval development and colony transition from growth to reproduction in an annual social bumble bee

Project description:Social organization is commonly dynamic with extreme examples in annual eusocial insects ("annual superorganisms"), but the signals and mechanisms regulating social organization remained elusive. In annual bumble bee colonies, larvae with a close contact to a queen do not differentiate into gynes, pupate at an earlier age, and are commonly smaller than siblings that do not contact a queen. We combined detailed observations, proteomics, microRNA transcriptomics, and gland removal surgery, to study the regulation of brood development and division of labor in the model bumble bee Bombus terrestris. We found that regurgitates fed to larvae by queens and workers differ in their protein and microRNA composition. The proteome of the regurgitate overlaps significantly with that of the mandibular (MG) and hypopharyngeal glands (HPG), suggesting that these exocrine glands are the sources of some regurgitate proteins. The MG and HPG proteomes , but not that of the salivary glands, differed between queens and workers, with the caste-specificity preserved for the MG and regurgitate proteomes. Queens subjected to a surgical removal of the MG showed normal behavior and brood care, but failed to manipulate the developmental program of the brood they reared. These findings suggest that substances in the queen MG are fed to larvae and influence their developmental program. As the colony grows, an increasing number of workers feed larvae and by that reduce the effects of the queen substances, such that she can no longer manipulate the development of all larvae, and the colony switches from producing workers (ergonomic phase) to gynes (reproductive phase).

2023-10-05 | PXD039851 | Pride

Evolution and molecular basis of caste differentiation in bees

Project description:Our aim was to identify the genes that are responsible for caste differentiation in the primitively eusocial bumble bee, Bombus terrestris. To do this we extracted RNA from both queen- and worker-destined larvae. We extracted RNA from three key stages during bumble bee development (before, during, and after their caste becomes fixed), and then sent the sequencing to the Earlham Institute. They used mRNAseq to isolate the RNA from each developmental stage and caste pathway.

2020-11-16 | GSE90751 | GEO

A MicroRNA Associated With Caste Determination in a Bumblebee is Expressed from a Mirtron Within a Homologue of Vitellogenin

Project description:Our aim was to use next-generation sequencing to identify the miRNAs associated with caste determination in queen-destined and worker-destined larvae of the bumble bee, Bombus terrestris. We found that two miRNAs (miR-6001-5p and miR-6001-3p) were upregulated in queen-destined larvae that had passed the critical developmental period when caste becomes irreversible in this species. The two miRNAs form a duplex that is expressed from the gene VHDL, a homologue of Vitellogenin. This finding suggests a new connection between miRNAs and a key protein known to play multiple roles in regulating reproductive division of labour in eusocial Hymenoptera .

2017-03-31 | GSE77870 | GEO

Genome-wide identification of accessible chromatin regions in bumblebee by ATAC-seq

Project description:Bumblebees (Hymenoptera: Apidae) are important pollinating insects that play pivotal roles in crop production and natural ecosystem services. To achieve a comprehensive profile of accessible chromatin regions and provide clues for all possible regulatory elements in the bumblebee genome, we did ATAC-seq for Bombus terrestris samples derived from its four developmental stages: egg, larva, pupa, and adult, respectively. The sequencing reads of ATAC-seq were mapped to B. terrestris reference genome, and its accessible chromatin regions were identified and characterized using bioinformatic methods. Our study will provide important resources not only for uncovering regulatory elements in the bumblebee genome, but also for expanding our understanding of bumblebee biology.

2020-10-02 | GSE151858 | GEO

Role of hormones regulate productive diapause queens in year-round mass rearing of Bombus terrestris

Project description:Adult reproductive diapause is a powerful overwintering strategy for many continental insect species including bumblebees, which enables queens to survive several months through harsh winter conditions and then build new beehives in the following spring. There are few reports regarding the molecular regulatory mechanism of reproductive diapause in Bombus terrestris, which is an important pollinators of wild plants and crops, and our previous researches identified the conditions for reproductive diapause of year-round mass rearing. Here, we performed combined RNA sequencing transcriptomics and quantitative proteomic analyses in different development phases relate to reproductive diapause. According to the overall analysis, we found these differentially expressed proteins/genes act in the citrate cycle, insect hormone biosynthesis, insulin and mTOR signalling pathway. To get better sense of the reproductive diapause regulated mechanism, some genes regulated JH synthesis, insulin/ TOR signal pathway were detected, the BtRheb, BtTOR, BtVg and BtJHAMT had lower expression levels in diapause queens, and the JH III titers levels and some metabolic enzymes activities were significantly up-regulated in found post-diapause queens. After microinjected insulin-like peptides (ILPs) and JH analog (JHA), some indicators shows the significantly changes of hormones, cold tolerance substances, metabolic enzymes and reproduction. Along with other related researches, a reproductive diapause regulated model during B. terrestris year-round mass rearing process was establishment. This study contribute to a comprehensive view and the molecular regulate mechanism of productive diapause in eusocial insect.

2021-04-06 | PXD017616 | Pride

Gene expression differences underlying genotype-by-genotype specificity in a host-parasite system

Project description:Expression of bumblebees (Bombus terrestris) from four colonies exposed to 3 different genotypes of the trypanosome parasite Crithidia bombi

2014-04-28 | GSE55035 | GEO

The effect of the brood and the queen on early gene expression in bumble bee workers' brains

Project description:We used RNA-se to compare gene expression patterns in workers of the bumble bee Bombus impatiens in response to the queen, the brood, both or none.

2022-02-13 | GSE196471 | GEO