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19 results for “Vitellogenin”
Fig. 3 in Trends in ovarian development, plasma vitellogenin, and steroid hormones in female Malaclemys terrapin (Schoepff, 1793) from coastal Louisiana
Fig. 3. Concentrations of vitellogenin (A), testosterone (B), and estradiol (C) throughout sampling periods of female Diamondback Terrapins captured in Louisiana. Dashed lines within each box indicate the mean of the data, bold lines within each box indicate the median of the data, the upper and lower edges of the boxes represent the 75% and 25% quartiles, and bars represent the minimum and maximum values. Solid black circles represent outliers, and different letters indicate significant differences (P<0.05) between sampling periods. The mean and median overlap in some categories, so both lines may not be visible.
Fig. 2 in Trends in ovarian development, plasma vitellogenin, and steroid hormones in female Malaclemys terrapin (Schoepff, 1793) from coastal Louisiana
Fig. 2. Ovarian follicle diameter throughout sampling periods of female Diamondback Terrapins captured in Louisiana. Dashed lines within each box indicate the mean of the data, bold lines within each box indicate the median of the data, and the upper and lower edges of the boxes represent the 75% and 25% quartiles. T bars represent the minimum and maximum values. Solid black circles represent outliers. Note n = 4 for late nesting period, but only two samples were used in the analysis as the others lacked any detectable follicles. The mean and median overlap in some categories, so both lines may not be visible.
Fig. 1 in Trends in ovarian development, plasma vitellogenin, and steroid hormones in female Malaclemys terrapin (Schoepff, 1793) from coastal Louisiana
Fig. 1. Examples of various follicular size classes from different sampling periods of Diamondback Terrapins. (A) Class II and IV follicles from late May. (B) Class I follicles from August samples. (C–D). Class II and III follicles from October samples.
Vitellogenins level as a biomarker of the honey bee colony seasonal dynamics
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FIG. 3 in Plasma Vitellogenin and Testosterone in Diamond-backed Terrapins (Malaclemys terrapin) during the Nesting Season in Coastal New Jersey
FIG. 3. Plasma testosterone (A) and vitellogenin (B) concentrations in relation to midline plastron length in Diamond-backed Terrapins captured during early (June; green triangles), middle (early July; blue squares), and late (late July–early August; red circles) nesting season at the Cape May Peninsula, New Jersey and the Hackensack Meadowlands, New Jersey.
FIG. 1 in Plasma Vitellogenin and Testosterone in Diamond-backed Terrapins (Malaclemys terrapin) during the Nesting Season in Coastal New Jersey
FIG. 1. Mean plastron length (6 SEM) of Diamond-backed Terrapins captured during early (June), middle (early July), and late (late July– early August) nesting season. Dashed lines within each box indicate mean of data, while solid lines inside the boxes indicate the median. Varying letters indicate significant differences (P, 0.05) between sampling periods. Mean and median overlap in some categories, and both lines may not be visible.
FIG. 2 in Plasma Vitellogenin and Testosterone in Diamond-backed Terrapins (Malaclemys terrapin) during the Nesting Season in Coastal New Jersey
FIG. 2. Mean circulating plasma (A) testosterone concentration (6 SEM) and (B) vitellogenin concentration (6 SEM) of Diamond-backed Terrapins captured during early (June), middle (early July), and late (late July–early August) nesting season. Dashed lines within each box indicate mean of data, while solid lines inside the boxes indicate the median. Varying letters indicate significant differences (P, 0.05) between sampling periods. Mean and median overlap in some categories, and both lines may not be visible.
Data from: "Worker queens"? Behavioral flexibility, juvenile hormone binding protein and Vitellogenin in queens of the little fire ant Wasmannia auropunctata
<p>Many species of social Hymenoptera demonstrate behavioral flexibility, where older workers that typically forage can revert to younger worker tasks, such as nursing, when these are absent. This flexibility is typical of the sterile worker class, yet rare in queens. In the little fire ant (<i>Wasmannia auropunctata</i>) queens have been reported to perform only egg laying. We examined behavior of queens of <i>W. auropunctata</i> after demographic manipulation. When half of the workers were removed from the colony, queens were observed caring for eggs, larvae and pupae as well as eating outside of the nest, like forager workers. We examined the relationship between these atypical queen behaviors and their juvenile hormone binding protein (JHbp) and vitellogenin (Vg) expression via QRT-PCR method. JHbp and Vg expression decreased when queens were performing worker tasks, resembling the expected expression pattern of typical sterile workers. Flexibility in queen behaviors in the little fire ant may be an important adaptation to changing environments. As a significant invasive species, such adaptation may increase the probability of colony survival during propagation. Our results not only present new insights in behavioral flexibility in social insects, but also increases our understanding of the success of this significant invasive species. </p>
Data from: Vitellogenin-like A–associated shifts in social cue responsiveness regulate behavioral task specialization in an ant
Division of labor and task specialization explain the success of human and insect societies. Social insect colonies are characterized by division of labor with workers specializing on brood care early and foraging later in life. Theory posits that this task switching requires shifts in responsiveness to task-related cues, yet experimental evidence is weak. Here we show that a Vitellogenin (Vg) ortholog identified in a RNAseq study on the ant Temnothorax longispinosus is involved in this process: Using phylogenetic analyses of Vg and Vg-like genes, we firstly show that this candidate gene does not cluster with the intensively studied honey bee Vg, but falls into a separate Vg-like A cluster. Secondly, an experimental knockdown of Vg-like A in the fat body caused a reduction in brood care and an increase in nestmate care in young ant workers. Nestmate care is normally exhibited by older workers. We demonstrate experimentally that this task switch is at least partly based on Vg-like-A-associated shifts in responsiveness from brood to worker cues. We thus reveal a novel mechanism leading to early behavioral maturation via changes in social cue responsiveness mediated by Vg-like A and associated pathways, which proximately play a role in regulating division of labor.
Effects of additional nutrients on carbohydrate, juvenile hormone, and vitellogenin contents in Frankliniella occidentalis (Thysanoptera: Thripidae)
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Data from: Vitellogenin and vitellogenin receptor gene expression is associated with male and female parenting in a subsocial insect
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Data from: “Worker queens”? Behavioral flexibility, juvenile hormone binding protein and Vitellogenin in queens of the little fire ant Wasmannia auropunctata
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Data from: Not only for egg yolk - functional and evolutionary insights from expression, selection and structural analyses of Formica ant vitellogenins
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Data from: Vitellogenin-like A–associated shifts in social cue responsiveness regulate behavioral task specialization in an ant
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Insulin/IGF signaling and vitellogenin provisioning mediate intergenerational adaptation to nutrient stress
GEO Series GSE129089. Caenorhabditis elegans. 19 samples. Type: Expression profiling by high throughput sequencing.
Single-cell transcriptomic analysis of honeybee brains identifies vitellogenin as caste differentiation-related factor
GEO Series GSE184507. Apis mellifera. 12 samples. Type: Expression profiling by high throughput sequencing.
A MicroRNA Associated With Caste Determination in a Bumblebee is Expressed from a Mirtron Within a Homologue of Vitellogenin
GEO Series GSE77870. Bombus terrestris. 8 samples. Type: Non-coding RNA profiling by high throughput sequencing.
The gene vitellogenin affects microRNA regulation in honey bee (Apis mellifera) fat body and brain
GEO Series GSE44917. Apis mellifera. 24 samples. Type: Non-coding RNA profiling by array.
Gene networks linked to vitellogenin mRNA disruption
GEO Series GSE39792. Apis mellifera. 2 samples. Type: Expression profiling by array.
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