Results 171 to 180 of about 6,209 (198)
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Structure of the Micropyle in Eggs of Nasonia vitripennis
Nature, 1962IN insects a micropyle is formed at the anterior pole of the egg and often has a very complicated structure. Sometimes it is a single pore or it may consist of numerous canals grouped together. The formation of the micropyle is due to a number of follicle cells or nurse cells having protoplasmic prolongations towards the egg, around which the chorion ...
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Nasonia vitripennis: An Insect Model for DNA Methylation
2023DNA methylation is an epigenetic mechanism that regulates gene expression and chromosomal organisation. Despite being a conserved phenomena across eukaryotes, the role and location of DNA methylation differs greatly across kingdoms. In the last decade, a new field exploring the role of DNA methylation in insect phenotypes has evolved.
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Characterization of a Female-Produced Courtship Pheromone in the Parasitoid Nasonia vitripennis
Journal of Chemical Ecology, 2006Males of the parasitoid Nasonia vitripennis (Walker) (Hymenoptera: Pteromalidae) show a characteristic courtship behavior. We demonstrate that male arrestment and key behavioral elements of the courtship sequence are mediated by a female-derived contact sex pheromone.
Sven, Steiner +2 more
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Regulation and function of tailless in the long germ wasp Nasonia vitripennis
Development Genes and Evolution, 2006In the long germ insect Drosophila, the gene tailless acts to pattern the terminal regions of the embryo. Loss of function of this gene results in the deletion of the anterior and posterior terminal structures and the eighth abdominal segment. Drosophila tailless is activated by the maternal terminal system through Torso signaling at both poles of the ...
Jeremy A, Lynch +2 more
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Transfer of Incompatibility Factors between Stocks of Nasonia ( = Mormoneilla) vitripennis
Journal of Invertebrate Pathology, 1993The stock of Nasonia vitripennis marked by the nuclear eye color mutation "tinged" (ti) shows nonreciprocal cytoplasmic incompatibility with wild-type (+) strains. Homogenates prepared from ti female pupae and injected into + female pupae caused 39% of the recipients to acquire the incompatibility characteristics of the ti donors.
E H, Williams, S, Fields, G B, Saul
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Intraspecific variability in associative learning in the parasitic wasp Nasonia vitripennis
Animal Cognition, 2014The ability to learn is key to behavioral adaptation to changing environments. Yet, learning rate and memory retention can vary greatly across or even within species. While interspecific differences have been attributed to ecological context or life history constraints, intraspecific variability in learning behavior is rarely studied and more often ...
Mareike, Koppik +4 more
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The evolutionary causes and consequences of polyandry in Nasonia vitripennis
2016Explaining the ubiquity of and variation in female multiple mating remains a key problem in evolutionary ecology. Much of the empirical work regarding the costs and benefits of mating has for obvious reasons relied on species that are already polyandrous.
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Proteomics of the Venom of the Parasitoid Nasonia vitripennis
2012Ellen M. Formesyn +2 more
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