Gene expression differences between mated and virgin females of Nasonia vitripennis
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Project description:Comparison of DeepSAGE data from mated and virgin females of Nasonia vitripennis from two time points considering head and body samples separately utilizing Illumina GA platform
2012-11-30 | E-MTAB-531 | biostudies-arrayexpress
Project description:This analysis compares gene expression between 4 day old mated and 4 day old virgin medfly, Ceratitis capitata females
2011-12-25 | GSE19573 | GEO
Project description:For many behaviours studied at the phenotypic level, we have little or no idea of where to start searching for “candidate” genes: the transcriptome provides such a starting point. Here we consider transcriptomic changes associated with oviposition in the parasitoid wasp Nasonia vitripennis. Oviposition is a key behaviour, as females are faced with a variety of decisions that will impact offspring fitness. These include choosing between hosts of differing quality, as well as deciding on clutch size and offspring sex ratio. We compared the whole-body transcriptomes of resting or ovipositing female Nasonia using a “DEEP-Sage” gene expression approach on the Illumina sequencing platform. Single 2-day old mated Nasonia vitripennis females (ASymC strain) were isolated in a glass vial and provided with a single host to produce F1 daughters. Eight 2-day old mated F1 females were subsequently provided with three hosts to produce the F2 test females. We randomly selected one host from each F1 female, and isolated 16 2-day old mated F2 test females in glass tubes, of which eight were randomly allocated to the oviposition treatment and eight to the resting treatment. We provided the test females with a single host for 24 hours as pre-treatment to facilitate egg development. We then discarded the pre-treatment hosts and gave each female a piece of chromatography paper soaked in honey solution for a further 24 hours. For the experiment, we transferred the females to 1.5 mL Eppendorf tubes that contained a single host for the oviposition experiment, or were empty for the resting treatment. After 60 mins, females were flash-frozen in liquid nitrogen and stored on dry-ice until the addition of RNAlater-ICE (Ambion, Austin, TX, USA) after which they were transferred to -20C. All females in the oviposition treatment were observed to have commenced ovipositing. We pooled the F2 test females from each F1 mother according to treatment, generating a total of eight pooled samples per treatment (consisting of 8 females per pool) for RNA isolation and sequencing.
2013-07-22 | E-GEOD-43352 | biostudies-arrayexpress
Project description:This analysis compares gene expression between 4 day old mated and 4 day old virgin medfly, Ceratitis capitata females This analysis compares gene expression between 4 day old mated and 4 day old virgin medfly, Ceratitis capitata females. Samples where made from the heads of the females.
2011-12-25 | E-GEOD-19573 | biostudies-arrayexpress
Project description:P. citri mealybugs cause severe damage in citrus production. We aimed at indentifying genes involved in mealybug sex pheromone biosynthesis. As these should be expressed in virgin females and are presumably downregulated after mating, we looked at genes differentially expressed between mated and virgin females.
2024-02-15 | GSE179660 | GEO
Project description:Linking the evolution of the phenotype to the underlying genotype is a key aim of evolutionary genetics and is crucial to our understanding of how natural selection shapes a trait. Here we consider the genetic basis of sex allocation behaviour in the parasitoid wasp Nasonia vitripennis using a transcriptomics approach. Females allocate offspring sex in line with Local Mate Competition (LMC) theory. Female-biased sex ratios are produced when one or few females lay eggs on a patch. As the number of females contributing offspring to a patch increases, less female-biased sex ratios are favoured. We contrasted the transcriptomic responses of females as they oviposit under conditions known to influence sex allocation: foundress number (a social cue) and the state of the host (parasitised or not). We found, that when females encounter other females on a patch, or assess host quality with their ovipositors, the resulting changes in sex allocation is not associated with significant changes in whole-body gene expression. We also found that the gene expression changes produced by females, as they facultatively allocate sex in response to a host cue and a social cue, are very closely correlated. We expanded the list of candidate genes associated with oviposition behaviour in Nasonia, some of which may be involved in fundamental processes underlying the ability to facultatively allocate sex, including sperm storage and utilisation.
2015-11-11 | GSE74241 | GEO
Project description:The expression level in the parasitoid Nasonia vitripennis adult female samples was profiled and compared with the methylation pattern. Methylated and non-methylated genes showed markedly different patterns. The expression level was higher for methylated than non-methylated genes. non-nmethylated genes account for 99% of the genes that were not found to be expressed in the adult female RNA-seq data (FPKM < 0.1). Unlike methylated genes, the expression distribution of the non-methylated genes was bimodal with a lower expressed group and a moderately expressed group of genes, indicating that methylation status is not the only determinant of high expression in adult females. Methylated genes also have lower coefficient of variation (CV) of expression level across five developmental stages, suggesting that they are expressed more evenly across development. Profiling of expression level in adult female Nasonia vitripennis by RNA-seq
2013-08-27 | E-GEOD-43422 | biostudies-arrayexpress
Project description:Linking the evolution of the phenotype to the underlying genotype is a key aim of evolutionary genetics and is crucial to our understanding of how natural selection shapes a trait. Here we consider the genetic basis of sex allocation behaviour in the parasitoid wasp Nasonia vitripennis using a transcriptomics approach. Females allocate offspring sex in line with Local Mate Competition (LMC) theory. Female-biased sex ratios are produced when one or few females lay eggs on a patch. As the number of females contributing offspring to a patch increases, less female-biased sex ratios are favoured. We contrasted the transcriptomic responses of females as they oviposit under conditions known to influence sex allocation: foundress number (a social cue) and the state of the host (parasitised or not). We found, that when females encounter other females on a patch, or assess host quality with their ovipositors, the resulting changes in sex allocation is not associated with significant changes in whole-body gene expression. We also found that the gene expression changes produced by females, as they facultatively allocate sex in response to a host cue and a social cue, are very closely correlated. We expanded the list of candidate genes associated with oviposition behaviour in Nasonia, some of which may be involved in fundamental processes underlying the ability to facultatively allocate sex, including sperm storage and utilisation. 2 x 3 factorial design. Females were placed into 1 of 2 "foundress number" groups: 1) alone or 2) in the presence of 9 other females (co-foundresses). Females were further subdivided into host treatment groups: i) given no host, ii) given a fresh host and iii) given a pre-parasitised host. This gives a total of 6 possible treatment combinations. For each of these 6 groups, 7 pools of 10 females were sequenced giving 42 libraries altogether.
2015-11-11 | E-GEOD-74241 | biostudies-arrayexpress