Behavioral adaptation to environmental threats and subsequent social transmission of adaptive behavior has evolutionary implications. In Drosophila, exposure parasitoid wasps leads a sharp decline in oviposition. We show that predator elicits both an acute learned oviposition depression, mediated through the visual system. However, long-term persistence depression after removal requires neuronal signaling functions, functional mushroom body, neurally driven apoptosis oocytes effector...

Learning processes in Drosophila have been studied through the use of Pavlovian associative memory tests, and these paradigms extremely useful identifying both genetic factors neuroanatomical structures that are essential to formation. Whether same genes brain compartments also contribute formed from nonassociative experiences is not well understood. Exposures environmental stressors such as predators known induce innate behavioral responses can lead new formation allows a predator response...

Rapid or even anticipatory adaptation to environmental conditions can provide a decisive fitness advantage an organism. The memory of recurring could also benefit future generations; however, neuronally-encoded behavior isn't thought be inherited across generations. We tested the possibility that environmentally triggered modifications allow 'memory' parental experiences inherited. In Drosophila melanogaster, exposure predatory wasps leads inheritance predisposition for ethanol-rich food...

Many species are able to share information about their environment by communicating through auditory, visual, and olfactory cues. In Drosophila melanogaster, exposure parasitoid wasps leads a decline in egg laying, exposed females communicate this threat naïve flies, which also depress laying. We find that across the genus respond laying reduction, activate cleaved caspase oocytes, presence of individuals. Communication within between closely related is efficient, while more distantly...

SUMMARY The melanotic encapsulation response mounted by Drosophila melanogaster against macroparasites, which is based on haemocyte binding to foreign objects, poorly characterized relative its humoral immune microbes, and appears be variable across insect lineages. genus Zaprionus a diverse clade of flies embedded within the . Here we characterize indianus endoparasitoid wasp eggs, elicit in D. We find that Z. highly resistant species. Although mounts canonical some wasps, it can also...

The 3-dimensional spatial organization of eukaryotic genomes is important for regulation gene expression as well DNA damage repair. It has been proposed that one basic biophysical property all nuclei interphase chromatin must be kept in a condensed prestressed state order to prevent entropic pressure the polymer from expanding and disrupting nuclear envelope. Although many factors can contribute specific organizational states compact chromatin, mechanisms through which such compaction...

The ability to integrate experiential information and recall it in the form of memory is observed a wide range taxa, hallmark highly derived nervous systems. Storage past experiences critical for adaptive behaviors that anticipate both adverse positive environmental factors. process formation consolidation involve many synchronized biological events including gene transcription, protein modification, intracellular trafficking: However, these molecular mechanisms remain illusive. With...

Abstract Immune priming occurs when a past infection experience leads to more effective immune response upon secondary exposure the or pathogen. In some instances, parents are able transmit their offspring, creating subsequent generation with superior capability, through processes that not yet fully understood. Using parasitoid wasp, which infects larval stages of Drosophila melanogaster, we describe an example intergenerational inheritance priming. This phenomenon is anticipatory in nature...

Although the nuclear envelope is known primarily for its role as a boundary between nucleus and cytoplasm in eukaryotes, it plays vital dynamic many cellular processes. Studies of structure have revealed tissue-specific changes architecture, suggesting that three-dimensional contributes to functionality. Despite importance envelope, factors regulate maintain shape remain largely unexplored. The makes extensive interactions with underlying chromatin. Given this inexorable link chromatin...

Abstract Drosophila species communicate the threat of parasitoid wasps to naïve individuals. Communication between closely related is efficient, while more distantly exhibit a dampened, partial communication. Partial communication D . melanogaster and ananassae about wasp presence enhanced following period cohabitation, suggesting that species-specific natural variations in ‘dialects’ can be learned through socialization. In this study, we identify six regions brain essential for dialect...

Immune challenges, such as parasitism, can be so pervasive and deleterious that they constitute an existential threat to a species' survival. In response these ecological pressures, organisms have developed wide array of novel behavioral, cellular, molecular adaptations. Research into immune defenses in model systems has resulted revolutionary understanding evolution functional biology. As the field expanded beyond limited number our appreciation evolutionary innovation unique biology...

ABSTRACT Many species are able to share information about their environment by communicating through auditory, visual, and olfactory cues. In Drosophila melanogaster, exposure parasitoid wasps leads a decline in egg laying, exposed females communicate this threat naïve flies, which also depress laying. We find that across the genus respond laying reduction, activate cleaved caspase oocytes, presence of individuals. communication within between closely related is efficient, while more...

Summary Rapid or even anticipatory adaptation to environmental conditions can provide a decisive fitness advantage an organism. The memory of recurring could also benefit future generations, however neuronally-encoded behavior isn’t thought be inherited across generations. We tested the possibility that environmentally triggered modifications allow “memory” parental experiences inherited. In Drosophila melanogaster , exposure predatory wasps leads inheritance predisposition for ethanol-rich...

Abstract Drosophila species communicate the presence of parasitoid wasps to naïve individuals. This observation suggests a rudimentary social structure. Communication between closely related is efficient, while more distantly exhibit dampened, partial communication. Partial communication some enhanced following period cohabitation, suggesting that species-specific variations in “dialects” can be learned through interactions. However, it remains unclear as how behavioral acquisition and...