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88 results for “Tribolium”
(07)-Ratke2020A-DS0006 – Tribolium castaneum AGOC{Zen1'#O(LA)-mEmerald} #3 subline long-term live imaging dataset of embryonic development acquired with light sheet fluorescence microscopy
<p>(07)-Ratke2020A-DS0006 – <em>Tribolium castaneum</em> AGOC{Zen1'#O(LA)-mEmerald} #3 subline long-term live imaging dataset of embryonic development acquired with light sheet fluorescence microscopy</p>
Mastodon project containing the cell tracks of a developing Tribolium Castaneum embryo.
<p>Mastodon project containing the cell tracks of a developing <em>Tribolium Castaneum </em>embryo. </p> <p>To open it in Mastodon, download both the <em>.mastodon </em>and the <em>.xml </em>files and put them in the same folder.</p> <p>The image data is stored on a BigDataServer in the Institut Pasteur, Paris, provided by the <a href="https://research.pasteur.fr/en/team/image-analysis-hub/">Image Analysis Hub</a>. When you open this <em>.mastodon </em>file with Mastodon, it will stream the image from the server without you having to download it. The mastodon file contains just the tracks and the <em>.xml </em>file contins the address of the server from where the image data will be streamed.</p> <p>Check the <a href="https://mastodon.readthedocs.io/">Mastodon scientific software</a> for information on how to open and use this file for scientific purposes.</p> <p>The image data is the 'TRIF' training video 02 from the <a href="http://www.celltrackingchallenge.net/">CellTrackingChallenge.net</a>, with authorization. The original dataset provider is Dr. A. Jain. Max Planck Institute of Molecular Cell Biology and Genetics, Dresden, Germany.</p> <ul> <li>Microscope: Zeiss LightSheet LZ.1</li> <li>Objective lens: Plan-Apochromat 20x/1.0 (water)</li> <li>Voxel size (microns): 0.38 x 0.38 x 0.38</li> <li>Time step (min): 1.5</li> </ul>
Genetic architecture of dispersal behaviour in the post-harvest pest and model organism Tribolium castaneum
<p>Dispersal behaviour is an important aspect of the life-history of animals. However, the genetic architecture of dispersal related traits is often obscure or unknown, even in well studied species.<em> Tribolium castaneum</em> is a globally significant post-harvest pest and established model organism, yet studies of its dispersal have shown ambiguous results and the genetic basis of this behaviour remains unresolved. We combine experimental evolution and agent-based modelling to investigate the number of loci underlying dispersal in <em>T.castaneum</em>, and whether the trait is sex-linked. Our findings demonstrate rapid evolution of dispersal behaviour under selection. We find no evidence of sex-biases in the dispersal behaviour of the offspring of crosses, supporting an autosomal genetic basis of the trait. Moreover, simulated data approximates experimental data under simulated scenarios where the dispersal trait is controlled by one or few loci, but not many loci. Levels of dispersal in experimentally inbred lines, compared with simulations, indicate that a single locus model is not well supported. Taken together, these lines of evidence support an oligogenic architecture underlying dispersal in <em>Tribolium castaneum</em>. These results have implications for applied pest management and for our understanding of the evolution of dispersal in the coleoptera, the world's most species-rich order.</p>
Genetic architecture of dispersal behaviour in the post-harvest pest and model organism Tribolium castaneum
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Life history correlations and trade-offs resulting from selection for dispersal in Tribolium castaneum
<p>Dispersal is an important facet of the life history of many organisms and is therefore subject to selective pressure, but does not evolve in isolation. Across nature, there are examples of dispersal syndromes, life history strategies in which suites of traits coevolve, and covary with dispersal in combinations that serve to maximise fitness in a given ecological context. The red rust flour beetle, <em>Tribolium castaneum</em>, is a model organism and globally significant post-harvest pest that relies on dispersal to reach new patches of ephemeral habitat. Dispersal behaviour in <em>Tribolium</em> has a strong genetic basis. However, a robust understanding of the relationship between dispersal and other life-history components, which could elucidate evolutionary processes and allow pest managers to control their spread and reduce the impact of infestation, is currently lacking. Here we use highly replicated lines of <em>T. castaneum </em>previously artificially selected for divergent small-scale dispersal propensity, to robustly test several important life history components: reproductive strategy, development time, and longevity. As predicted, we find that a suite of important changes as a result of our selection on dispersal; high dispersal propensity is associated with a lower number of longer mating attempts by males, lower investment in early-life reproduction by females, slower development of later-laid offspring and longer female lifespan. These findings indicate that correlated intraspecific variation in dispersal and related traits may represent alternative life history strategies in <em>T. castaneum</em>. We therefore suggest that pest management efforts to mitigate the species' agro-economic impact should consider the eco-evolutionary dynamics within multiple life histories. The benefits of doing so could be felt both through improved targeting of efforts to reduce spread, and also in forecasting how the selection pressures applied through pest management are likely to affect pest evolution.</p>
(12)-Pereyra2024A-DS0001--0009 – Nine Tribolium castaneum long-term live imaging datasets of embryonic development acquired with light sheet fluorescence microscopy
<p>(12)-Pereyra2024A-DS0001--0009 – Nine <em>Tribolium castaneum</em> long-term live imaging datasets of embryonic development acquired with light sheet fluorescence microscopy</p>
(06)-He2019A-DS0001 – Tribolium castaneum foxQ2-5' line long-term live imaging dataset of embryonic development acquired with light sheet fluorescence microscopy
<p>(06)-He2019A-DS0001 – <em>Tribolium castaneum</em> foxQ2-5' line long-term live imaging dataset of embryonic development acquired with light sheet fluorescence microscopy</p>
Beetle Team Tribolium Data Archive
<p>The Beetle Team Tribolium Data Archive is a collection of 10 data sets created and/or analyzed over a 20-year period by a multidisciplinary group of collaborators, the "Beetle Team" (Jim Cushing, R. F. Costantino, Brian Dennis, Robert A. Desharnais, Shandelle M. Henson, Aaron A. King, and Jeffrey Edmunds). The data are from population laboratory experiments using the flour beetle <em>Tribolium castaneum</em>. Their research program was focused on providing biological evidence of complex nonlinear population dynamics.</p>
Data for: Latitudinal cline of death-feigning behaviour in a beetle (Tribolium castaneum)
<p><span>Death-feigning behaviour is a phenomenon in which a prey is rendered motionless due to stimulation or threat from a predator. This anti-predator defense mechanism has been observed across numerous animal taxa and is considered adaptive in nature. However, longer durations of death feigning can result in decreased opportunities for feeding and reproduction, and therefore is often associated with higher fitness costs as compared to environments without predators. Differences have also been observed in the frequencies and durations of death-feigning behaviours within animal populations, and these differences are thought to be influenced by the balance between survival and other fitness costs. Furthermore, this balance is predicted to vary in response to changes in environmental conditions. In this study, we examined the frequency and duration of death-feigning behaviours in 38 populations of the red flour beetle (<em>Tribolium</em> <em>castaneum</em>). Our results demonstrate that frequencies and durations of the death-feigning behaviours in <em>Tribolium</em> <em>castaneum</em> show geographical variations and a latitude cline, indicating that this behaviour is influenced by location as well as latitude. This study is the first to demonstrate the existence of a latitudinal cline in death-feigning behaviour and suggests that this behavior might have evolved in response to environmental factors that vary with latitude.</span></p>
TcCYP4C1 in combination with trehalose to cope with high CO2 stress in Tribolium castaneum (Coleoptera)
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Life history correlations and trade-offs resulting from selection for dispersal in Tribolium castaneum
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Time spares no male: The age-dependent decline of olfactory attractiveness in red flour beetles <em>Tribolium castaneum</em>
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Data for: Latitudinal cline of death-feigning behaviour in a beetle (Tribolium castaneum)
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Beetle Team Tribolium Data Archive
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Data from: Synchronising anti-predator behaviour in the red flour beetle Tribolium castaneum
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Does genetic rescue disrupt local adaptation? An experimental test using thermally adapted <em>Tribolium castaneum</em> lines
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Relationship between walking activity and flight activity in the red flour beetle <em>Tribolium castaneum</em>
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Priority determines tribolium competitive outcome in a food-limited environment
<p>Flour beetles are a classic model system for studying competitive dynamics between species occupying the same ecological niche. Competitive performance is often interpreted in terms of biological species traits such as fecundity, resource use, and predation. However, many studies only measure competitive ability when species enter an environment simultaneously, and thus do not consider how the relative timing of species' arrival may determine competitive outcome (i.e., priority effects). Whether priority effects may influence competition in <i>Tribolium</i> remains to be tested. The present study examined the importance of priority effects in competitions between two common species of flour beetle (Coleoptera: Tenebrionidae): <i>Tribolium castaneum</i> and <i>T. confusum</i>. To investigate whether priority effects confer competitive advantages to <i>Tribolium</i> beetles, relative introduction times of <i>T. castaneum</i> and <i>T. confusum</i> to competitive arenas were manipulated, and adult populations were measured for seven months. Four important patterns were noted: (1) <i>Tribolium</i> species given two-weeks priority access to experimental arenas attained larger populations than their late-arriving competitor, (2) when founding adults were introduced simultaneously, T. castaneum was competitively dominant, (3) <i>T. castaneum</i> benefited more from priority arrival than <i>T. confusum</i>, and (4) available bran resources largely predicted population decline in adult beetles toward the end of the experiment. These results suggest competitive outcome in <i>Tribolium</i> is not always predicted by species' identity, and that performance could instead be determined by the timing of species' arrivals and available resources.</p>
Additive and mostly adaptive plastic responses of gene expression to multiple stress in Tribolium castaneum
Gene expression is known to be highly responsive to the environment and important for adjustment of metabolism but there is also growing evidence that differences in gene regulation contribute to species divergence and differences among locally adapted populations. However, most studies so far investigated populations when divergence had already occurred. Selection acting on expression levels at the onset of adaptation to an environmental change has not been characterized. Understanding the mechanisms is further complicated by the fact that environmental change is often multivariate, meaning that organisms are exposed to multiple stressors simultaneously with potentially interactive effects. Here we use a novel approach by combining fitness and whole-transcriptome data in a large-scale experiment to investigate responses to drought, heat and their combination in Tribolium castaneum . We found that fitness was reduced by both stressors and their combined effect was almost additive. Expression data showed that stressor responses were acting independently and did not interfere physiologically. Since we measured expression and fitness within the same individuals, we were able to estimate selection on gene expression levels. We found that variation in fitness can be attributed to gene expression variation and that selection pressures were environment dependent and opposite between control and stress conditions. We could further show that plastic responses of expression were largely adaptive, i.e. in the direction that should increase fitness.
Insecticidal activity of Beauveri bassiana ERL1170-egfp against Tribolium castaneum
<p class="MsoBodyText"><strong><span>Background</span></strong></p> <p class="MsoBodyText"><span>Beauveria bassiana</span><span> is one of the commercially available entomopathogenic fungi (EPF), and a number of isolates with high virulence and broad host spectrum have been used to control agricultural and forest pests. Although the functional importance of genes in EPFs' pathogenesis have been extensively studied, the precise ultrastructural mechanism of the fungal infection, particularly penetration of the host insect cuticles, is not well understood. </span></p> <p class="MsoBodyText"><strong><span>Results</span></strong></p> <p class="MsoBodyText"><span>In this study, we investigated the morphology and ultrastructure of the larval cuticle of the red flour beetle, </span><span>Tribolium castaneum</span><span>,</span><span> after treatment with </span><span>B. bassiana </span><span>ERL1170 expressing an enhanced green fluorescent protein (</span><span>Bb</span><span>-eGFP). The </span><span>Bb</span><span>-eGFP showed high virulence against the larvae, with approximately 90% mortality at 48 h after treatment (HAT) and 100% at 72 HAT under our infection conditions. In </span><span>these</span><span> larvae, the regions of the body wall with flexible cuticles, such as the ventral and ventrolateral thorax and abdomen, became darkly melanized, but there was little to none melanization in the rigid dorsal cuticular structures. Confocal microscopy and transmission electron microscopy (TEM) indicated that germinated conidia on the surface of the larval cuticle were evident at 6 HAT, which formed penetration pegs and began to penetrate the several cuticle layers/laminae by 12 HAT. The penetration pegs then developed invading hyphae, some of which passed through the cuticle and reached the epidermal cells by 24 HAT. The larval cuticle was aggressively and extensively disrupted by 48 HAT, and a number of outgrowing hyphae were observed at 72 HAT. </span></p>
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