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We report the morphology, biology and phylogeny of a new strepsipteran endoparasitic species: Xenos gadagkari, which stylopises the primitively eusocial wasp Polistes wattii from Punjab, India. We report a high abundance of the endoparasite in P. wattii population of our study area and provide the morphological description of adult males, male puparium and neotenic females.
View Article and Find Full Text PDFBrain physiology during photoperiod-related caste determination in the primitively eusocial wasp Polistes jokahamae.
Sci Rep
December 2024
Insect Design Technology Group, Division of Insect Advanced Technology, Institute of Agrobiological Sciences, National Agriculture and Food Research Organization (NARO), 1-2 Owashi, Tsukuba, 305-8634, Ibaraki, Japan.
Adult females of the primitively eusocial wasp Polistes jokahamae can change caste in response to photoperiod length. Short-day photoperiod females store more lipids but have less developed ovaries for hibernation (becoming gynes), whereas long-day photoperiod females have fewer lipid stores but more developed ovaries under queenless conditions (becoming egg-laying workers). To explore the physiological mechanisms underlying photoperiod-related caste determination, analyses of gene expression levels in the brains of short- or long-day females were performed.
View Article and Find Full Text PDFThe heat shock response in Polistes spp. brood from differing climates following heat stress.
J Insect Physiol
July 2024
Department of Biology, Aarhus University, Aarhus, Denmark.
Temperature is a crucial factor in many physiological processes, especially in small ectotherms whose body temperature is highly influenced by ambient temperature. Polistes (paper wasps) is a genus of primitively eusocial wasps found in widely varying thermal environments throughout the world. Paper wasps construct open-faced combs in which the brood is exposed to varying ambient temperatures.
View Article and Find Full Text PDFChemical Resemblance of Egg Surface Compounds and Dufour's Gland in Two Neotropical Polistinae Wasps Polistes versicolor (Olivier) and Mischocyttarus metathoracicus (de Saussure, 1854).
Neotrop Entomol
December 2023
Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Depto de Biologia, Univ de São Paulo - USP, Ribeirão Preto, SP, Brazil.
Chemical communication plays a major role in regulating social dynamics in social insect colonies. The most studied class of chemical compounds are the cuticular hydrocarbons (CHCs), compounds with high molecular weight that cover the insect body. CHCs are used in nestmate recognition and to signal reproductive status.
View Article and Find Full Text PDFBrain Gene Expression of Foraging Behavior and Social Environment in Ceratina calcarata.
Genome Biol Evol
July 2023
Department of Biology, York University, Toronto, Canada.
Rudimentary social systems have the potential to both advance our understanding of how complex sociality may have evolved and our understanding of how changes in social environment may influence gene expression and cooperation. Recently, studies of primitively social Hymenoptera have greatly expanded empirical evidence for the role of social environment in shaping behavior and gene expression. Here, we compare brain gene expression profiles of foragers across social contexts in the small carpenter bee, Ceratina calcarata.
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