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Li XD, Jiang GF, Li R, Bai Y, Zhang GS, Xu SJ, Deng WA. Molecular strategies of the pygmy grasshopper Eucriotettix oculatus adapting to long-term heavy metal pollution. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 276:116301. [PMID: 38599159 DOI: 10.1016/j.ecoenv.2024.116301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2023] [Revised: 03/31/2024] [Accepted: 04/03/2024] [Indexed: 04/12/2024]
Abstract
To study the heavy metal accumulation and its impact on insect exterior and chromosome morphology, and reveal the molecular mechanism of insects adapting to long-term heavy metal compound pollution habitats, this study, in the Diaojiang river basin, which has been polluted by heavy metals(HMs) for nearly a thousand years, two Eucriotettix oculatus populations was collected from mining and non-mining areas. It was found that the contents of 7 heavy metals (As, Cd, Pb, Zn, Cu, Sn, Sb) in E. oculatus of the mining area were higher than that in the non-mining 1-11 times. The analysis of morphology shows that the external morphology, the hind wing type and the chromosomal morphology of E. oculatus are significant differences between the two populations. Based on the heavy metal accumulation,morphological change, and stable population density, it is inferred that the mining area population has been affected by heavy metals and has adapted to the environment of heavy metals pollution. Then, by analyzing the transcriptome of the two populations, it was found that the digestion, immunity, excretion, endocrine, nerve, circulation, reproductive and other systems and lysosomes, endoplasmic reticulum and other cell structure-related gene expression were suppressed. This shows that the functions of the above-mentioned related systems of E. oculatus are inhibited by heavy metal stress. However, it has also been found that through the significant up-regulation of genes related to the above system, such as ATP2B, pepsin A, ubiquitin, AQP1, ACOX, ATPeV0A, SEC61A, CANX, ALDH7A1, DLD, aceE, Hsp40, and catalase, etc., and the down-regulation of MAPK signalling pathway genes, can enhanced nutrient absorption, improve energy metabolism, repair damaged cells and degrade abnormal proteins, maintain the stability of cells and systems, and resist heavy metal damage so that E. oculatus can adapt to the environment of heavy metal pollution for a long time.
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Affiliation(s)
- Xiao-Dong Li
- Guangxi Key Laboratory of Sericulture Ecology and Applied Intelligent Technology, School of Chemistry and Bioengineering, Hechi University Yizhou 546300, China; Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210000, China
| | - Guo-Fang Jiang
- Jiangsu Key Laboratory for Biodiversity and Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210000, China; College of Oceanology and Food Sciences, Quanzhou Normal University, Quanzhou 362000, China.
| | - Ran Li
- School of Life Sciences, Qufu Normal University, Qufu 273165, China
| | - Yi Bai
- School of Life Science, Taizhou University, Taizhou 317000, China
| | - Guo-Song Zhang
- School of Agriculture and Bioengineering, Heze University, Heze 274000, China
| | - Shu-Juan Xu
- College of Life Science and Technology, Longdong University, Qingyang 745000, China
| | - Wei-An Deng
- Guangxi Key Laboratory of Sericulture Ecology and Applied Intelligent Technology, School of Chemistry and Bioengineering, Hechi University Yizhou 546300, China; College of Life Science, Guangxi Normal University, Guilin 541004, China.
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Qian HY, Zhang X, Zhao GD, Guo HM, Li G, Xu AY. Effects of Pyriproxyfen Exposure on Reproduction and Gene Expressions in Silkworm, Bombyx mori. INSECTS 2020; 11:insects11080467. [PMID: 32722009 PMCID: PMC7469178 DOI: 10.3390/insects11080467] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/03/2020] [Revised: 07/19/2020] [Accepted: 07/22/2020] [Indexed: 11/16/2022]
Abstract
The silkworm, Bombyx mori Linnaeus, is an important economic insect and a representative model organism of Lepidoptera, which has been widely used in the study of reproduction and development. The development of the silkworm's reproductive gland is easily affected by many external factors, such as chemical insecticides. After the silkworm larvae were treated with different concentrations of pyriproxyfen, the results showed that the number of eggs and hatching rate of eggs in the silkworm can be reduced by pyriproxyfen, and the concentration effects were displayed. Pyriproxyfen exposure could affect the normal development of the ovary tissue by reducing the number of oocytes and oogonia in the ovaries of silkworm fed with pyriproxyfen. We employed qRT-PCR, to detect the expressions of genes related to ovary development (Vg, Ovo, Otu, Sxl-S and Sxl-L) and hormone regulation (EcR and JHBP2) in silkworm. Our study showed that the transcription levels of Vg, Ovo, Otu, Sxl-S and Sxl-L in the treatment group were lower than those in the control group (6.08%, 61.99%, 83.51%, 99.31% and 71.95%, respectively). The transcription level of ECR was 70.22% for the control group, while that of JHBP2 was upregulated by 3.92-fold. Changes of transcription levels of these genes caused by pyriproxyfen exposure ultimately affect the absorption of nutrients, energy metabolism, ovary development and egg formation of the silkworm, thus leading to reproductive disorders of the silkworm. In general, our study revealed the response of silkworm reproduction to pyriproxyfen exposure and provided a certain reference value for the metabolism of the silkworm to pyriproxyfen.
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Affiliation(s)
- He-Ying Qian
- School of Biotechnology, Jiangsu University of Science and Technology, Jiangsu 212018, China; (X.Z.); (G.-D.Z.); (H.-M.G.); (G.L.)
- Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Jiangsu 212018, China
- Correspondence: (H.-Y.Q.); (A.-Y.X.)
| | - Xiao Zhang
- School of Biotechnology, Jiangsu University of Science and Technology, Jiangsu 212018, China; (X.Z.); (G.-D.Z.); (H.-M.G.); (G.L.)
| | - Guo-Dong Zhao
- School of Biotechnology, Jiangsu University of Science and Technology, Jiangsu 212018, China; (X.Z.); (G.-D.Z.); (H.-M.G.); (G.L.)
- Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Jiangsu 212018, China
| | - Hui-Min Guo
- School of Biotechnology, Jiangsu University of Science and Technology, Jiangsu 212018, China; (X.Z.); (G.-D.Z.); (H.-M.G.); (G.L.)
| | - Gang Li
- School of Biotechnology, Jiangsu University of Science and Technology, Jiangsu 212018, China; (X.Z.); (G.-D.Z.); (H.-M.G.); (G.L.)
- Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Jiangsu 212018, China
| | - An-Ying Xu
- School of Biotechnology, Jiangsu University of Science and Technology, Jiangsu 212018, China; (X.Z.); (G.-D.Z.); (H.-M.G.); (G.L.)
- Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Jiangsu 212018, China
- Correspondence: (H.-Y.Q.); (A.-Y.X.)
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Characterization and expression analysis of seven putative JHBPs in the mud crab Scylla paramamosain: Putative relationship with methyl farnesoate. Comp Biochem Physiol B Biochem Mol Biol 2020; 241:110390. [DOI: 10.1016/j.cbpb.2019.110390] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2019] [Revised: 11/22/2019] [Accepted: 12/05/2019] [Indexed: 12/23/2022]
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Characterization of insect cytosolic juvenile hormone binding protein gene: Highly homology with vertebrate glyoxalase domain containing protein 4. BIOCHEM SYST ECOL 2015. [DOI: 10.1016/j.bse.2014.12.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Darrouzet E, Labédan M, Landré X, Perdereau E, Christidès JP, Bagnères AG. Endocrine control of cuticular hydrocarbon profiles during worker-to-soldier differentiation in the termite Reticulitermes flavipes. JOURNAL OF INSECT PHYSIOLOGY 2014; 61:25-33. [PMID: 24374106 DOI: 10.1016/j.jinsphys.2013.12.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2013] [Revised: 12/12/2013] [Accepted: 12/18/2013] [Indexed: 06/03/2023]
Abstract
The social organization of termites, unlike that of other social insects, is characterized by a highly plastic caste system. With the exception of the alates, all other individuals in a colony remain at an immature stage of development. Workers in particular remain developmentally flexible; they can switch castes to become soldiers or neotenics. Juvenile hormone (JH) is known to play a key role in turning workers into soldiers. In this study, we analyzed differences in cuticular hydrocarbon (CHC) profiles among castes, paying particular attention to the transition of workers to soldiers, in the subterranean termite species Reticulitermes flavipes. CHCs have a fundamental function in social insects as they serve as cues in inter- and intraspecific recognition. We showed that (1) the CHC profiles of the different castes (workers, soldiers, nymphs and neotenics) are different and (2) when workers were experimentally exposed to a JH analog and thus induced to become soldiers, their CHC profiles were modified before and after the worker-presoldier molt and before and after the presoldier-soldier molt.
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Affiliation(s)
- E Darrouzet
- University of Tours, IRBI UMR CNRS 6172, parc de Grandmont, 37200 Tours, France.
| | - M Labédan
- University of Tours, IRBI UMR CNRS 6172, parc de Grandmont, 37200 Tours, France
| | - X Landré
- University of Tours, IRBI UMR CNRS 6172, parc de Grandmont, 37200 Tours, France
| | - E Perdereau
- University of Tours, IRBI UMR CNRS 6172, parc de Grandmont, 37200 Tours, France
| | - J P Christidès
- University of Tours, IRBI UMR CNRS 6172, parc de Grandmont, 37200 Tours, France
| | - A G Bagnères
- University of Tours, IRBI UMR CNRS 6172, parc de Grandmont, 37200 Tours, France
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Carter JM, Baker SC, Pink R, Carter DRF, Collins A, Tomlin J, Gibbs M, Breuker CJ. Unscrambling butterfly oogenesis. BMC Genomics 2013; 14:283. [PMID: 23622113 PMCID: PMC3654919 DOI: 10.1186/1471-2164-14-283] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2013] [Accepted: 04/05/2013] [Indexed: 12/16/2022] Open
Abstract
Background Butterflies are popular model organisms to study physiological mechanisms
underlying variability in oogenesis and egg provisioning in response to
environmental conditions. Nothing is known, however, about; the
developmental mechanisms governing butterfly oogenesis, how polarity in the
oocyte is established, or which particular maternal effect genes regulate
early embryogenesis. To gain insights into these developmental mechanisms
and to identify the conserved and divergent aspects of butterfly oogenesis,
we analysed a de novo ovarian transcriptome of the Speckled Wood
butterfly Pararge aegeria (L.), and compared the results with known
model organisms such as Drosophila melanogaster and Bombyx
mori. Results A total of 17306 contigs were annotated, with 30% possibly novel or highly
divergent sequences observed. Pararge aegeria females expressed
74.5% of the genes that are known to be essential for D.
melanogaster oogenesis. We discuss the genes involved in all
aspects of oogenesis, including vitellogenesis and choriogenesis, plus those
implicated in hormonal control of oogenesis and transgenerational hormonal
effects in great detail. Compared to other insects, a number of significant
differences were observed in; the genes involved in stem cell maintenance
and differentiation in the germarium, establishment of oocyte polarity, and
in several aspects of maternal regulation of zygotic development. Conclusions This study provides valuable resources to investigate a number of divergent
aspects of butterfly oogenesis requiring further research. In order to fully
unscramble butterfly oogenesis, we also now also have the resources to
investigate expression patterns of oogenesis genes under a range of
environmental conditions, and to establish their function.
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Affiliation(s)
- Jean-Michel Carter
- Evolutionary Developmental Biology Research Group, Faculty of Health and Life Sciences, Department of Biological and Medical Sciences, Oxford Brookes University, Gipsy Lane, Headington, Oxford, OX3 0BP, UK
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Andruszewska G, Ożyhar A, Kochman M, Schmidt M. Different pattern of Galleria mellonella jhbp gene expression in high five and Sf9 cells. ARCHIVES OF INSECT BIOCHEMISTRY AND PHYSIOLOGY 2013; 82:141-157. [PMID: 23334896 DOI: 10.1002/arch.21081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Juvenile hormone binding protein (JHBP) is the key element of the system that transmits hormone signals to target tissues. Recently, we found that the core promoter of the jhbp gene is strongly under the control of the TATA box and the transcription start site. In this report, we have shown that the jhbp promoter contains distal regulatory elements whose functionality clearly depends on the particular cell environment and that the scope of research from one cell line is insufficient to generalize the conclusions of the analysis. Cf1/Usp (where Usp is ultraspiracle protein previously known as Cf1, chorion factor 1) elements suppressed transcription of the reporter gene in the High Five cell line but not in the Sf9 cell line. However, upstream from all three Cf1/Usp elements there is a DNA sequence, containing the Zeste element, which activates jhbp in both systems. We found that juvenile hormone strongly inhibited the activity of the jhbp promoter in the Sf9 cell line, whereas it did not have an effect in the High Five cell line. A second key hormone that controls insect development--20-hydroxyecdysone, was also found to suppress the transcription of jhbp. This is the first report describing how these two hormones affect jhbp gene expression in different cell lines.
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Affiliation(s)
- Grażyna Andruszewska
- Department of Biochemistry, Faculty of Chemistry, Wrocław University of Technology, Wybrzeże Wyspiańskiego, Wrocław, Poland
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Ewen-Campen B, Shaner N, Panfilio KA, Suzuki Y, Roth S, Extavour CG. The maternal and early embryonic transcriptome of the milkweed bug Oncopeltus fasciatus. BMC Genomics 2011; 12:61. [PMID: 21266083 PMCID: PMC3040728 DOI: 10.1186/1471-2164-12-61] [Citation(s) in RCA: 107] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2010] [Accepted: 01/25/2011] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND Most evolutionary developmental biology ("evo-devo") studies of emerging model organisms focus on small numbers of candidate genes cloned individually using degenerate PCR. However, newly available sequencing technologies such as 454 pyrosequencing have recently begun to allow for massive gene discovery in animals without sequenced genomes. Within insects, although large volumes of sequence data are available for holometabolous insects, developmental studies of basally branching hemimetabolous insects typically suffer from low rates of gene discovery. RESULTS We used 454 pyrosequencing to sequence over 500 million bases of cDNA from the ovaries and embryos of the milkweed bug Oncopeltus fasciatus, which lacks a sequenced genome. This indirectly developing insect occupies an important phylogenetic position, branching basal to Diptera (including fruit flies) and Hymenoptera (including honeybees), and is an experimentally tractable model for short-germ development. 2,087,410 reads from both normalized and non-normalized cDNA assembled into 21,097 sequences (isotigs) and 112,531 singletons. The assembled sequences fell into 16,617 unique gene models, and included predictions of splicing isoforms, which we examined experimentally. Discovery of new genes plateaued after assembly of ~1.5 million reads, suggesting that we have sequenced nearly all transcripts present in the cDNA sampled. Many transcripts have been assembled at close to full length, and there is a net gain of sequence data for over half of the pre-existing O. fasciatus accessions for developmental genes in GenBank. We identified 10,775 unique genes, including members of all major conserved metazoan signaling pathways and genes involved in several major categories of early developmental processes. We also specifically address the effects of cDNA normalization on gene discovery in de novo transcriptome analyses. CONCLUSIONS Our sequencing, assembly and annotation framework provide a simple and effective way to achieve high-throughput gene discovery for organisms lacking a sequenced genome. These data will have applications to the study of the evolution of arthropod genes and genetic pathways, and to the wider evolution, development and genomics communities working with emerging model organisms.[The sequence data from this study have been submitted to GenBank under study accession number SRP002610 (http://www.ncbi.nlm.nih.gov/sra?term=SRP002610). Custom scripts generated are available at http://www.extavourlab.com/protocols/index.html. Seven Additional files are available.].
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Affiliation(s)
- Ben Ewen-Campen
- Department of Organismic and Evolutionary Biology, Harvard University, 16 Divinity Avenue, Cambridge, MA 02138, USA
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Contreras-Garduño J, Córdoba-Aguilar A, Azpilicueta-Amorín M, Cordero-Rivera A. Juvenile hormone favors sexually-selected traits but impairs fat reserves and abdomen mass in males and females. Evol Ecol 2010. [DOI: 10.1007/s10682-010-9438-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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10
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Tsuchida K, Yokoyama T, Sakudoh T, Katagiri C, Tsurumaru S, Takada N, Fujimoto H, Ziegler R, Iwano H, Hamano K, Yaginuma T. Apolipophorin-III expression and low density lipophorin formation during embryonic development of the silkworm, Bombyx mori. Comp Biochem Physiol B Biochem Mol Biol 2010; 155:363-70. [DOI: 10.1016/j.cbpb.2009.12.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2009] [Revised: 12/16/2009] [Accepted: 12/20/2009] [Indexed: 10/20/2022]
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Liu F, Ling E, Wu S. Gene expression profiling during early response to injury and microbial challenges in the silkworm, Bombyx mori. ARCHIVES OF INSECT BIOCHEMISTRY AND PHYSIOLOGY 2009; 72:16-33. [PMID: 19557735 DOI: 10.1002/arch.20320] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
To identify Bombyx mori genes involved in the early response to injury and microbial challenge, we performed genome-wide gene expression-profiling experiments using oligonucleotide DNA microarrays. Of approximately 23,000 genes examined, 465 displayed changes in mRNA expression levels. Of these, 306 were induced and 159 were repressed in response to injury (injection with phosphate buffer saline) or challenges by Gram-negative (Serratia marcescens), Gram-positive bacteria (Staphylococcus aureus), or fungus (Beauveria bassiana). Many of these differentially expressed genes can be assigned to specific functional groups of the innate immune response, including recognition, signaling, melanization and coagulation, and antimicrobial peptides. Seventeen percent of differentially expressed genes encode proteins with no obvious similarity to known functional domains. Of particular interest is a member of the juvenile hormone-binding protein family, which was highly induced by both injury and microbial challenges. The possible role of juvenile hormone in innate immunity is discussed.
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Affiliation(s)
- Fei Liu
- Research Center for Insect Science, Institute of Plant Physiology and Ecology, Shanghai Institutes for Biological Sciences, The Chinese Academy of Sciences Graduate School, Shanghai, People's Republic of China
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Contreras-Garduño J, Córdoba-Aguilar A, Lanz-Mendoza H, Cordero Rivera A. Territorial behaviour and immunity are mediated by juvenile hormone: the physiological basis of honest signalling? Funct Ecol 2009. [DOI: 10.1111/j.1365-2435.2008.01485.x] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Lengyel F, Westerlund SA, Kaib M. Juvenile Hormone III Influences Task-Specific Cuticular Hydrocarbon Profile Changes in the Ant Myrmicaria eumenoides. J Chem Ecol 2006; 33:167-81. [PMID: 17146723 DOI: 10.1007/s10886-006-9185-x] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
We investigated the influence of juvenile hormones (JH) on the composition of cuticular hydrocarbons (CHCs) and the division of labor in colonies of the African ant Myrmicaria eumenoides. CHCs have long been implicated in nestmate recognition in social insect colonies. In M. eumenoides, the CHC profiles also vary with the task performed from brood-tender-type to forager type. The endocrine factors regulating the task allocation as well as the intracolonial recognition cues are not well understood, but JHs are prime candidates. Only JH III was identified in the hemolymph of M. eumenoides workers. Foragers had significantly higher JH III titers than brood tenders. The application of exogenous JH III and a JH analogue (methoprene) to M. eumenoides workers did not result in an observable acceleration of task change in our study. However, longevity of the focus workers, and thus the observational period, was reduced by the applications. Changes from a brood-tender-type to a forager-type CHC profile were accelerated by the application of JH III and methoprene, resulting in brood-tending workers that displayed forager-type CHC profiles. We present the first data supporting that recognition cues of an eusocial Hymenopteran are influenced by JH III, which could thus play a major role in the regulation of the dynamic nature of social insect colonies. JH III is connected to at least two key processes: the acceleration of CHC changes and the more long-term modulation of task shifting. Moreover, this indicates that changes in CHC recognition cues do not trigger task allocation in social insect colonies.
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Affiliation(s)
- F Lengyel
- Department of Animal Physiology, University of Bayreuth, 95447, Bayreuth, Germany
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