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Consortium of Swiss Academic Libraries

In memoriam—Walter J. Gehring

Affolter, Markus ; Nigg, Erich

In: Chromosoma, 2015, vol. 124, no. 3, p. 291-291

Université de Fribourg

Mms19 promotes spindle microtubule assembly in Drosophila neural stem cells

Chippalkatti, Rohan ; Egger, Boris ; Suter, Beat

In: PLOS Genetics, 2020, vol. 16, no. 11, p. e1008913

Mitotic divisions depend on the timely assembly and proper orientation of the mitotic spindle. Malfunctioning of these processes can considerably delay mitosis, thereby compromising tissue growth and homeostasis, and leading to chromosomal instability. Loss of functional Mms19 drastically affects the growth and development of mitotic tissues in Drosophila larvae and we now demonstrate that...

Université de Fribourg

Circadian and genetic modulation of visually-guided navigation in Drosophila larvae

Asirim, Ece Z. ; Humberg, Tim-Henning ; Maier, G. Larisa ; Sprecher, Simon G.

In: Scientific Reports, 2020, vol. 10, no. 1, p. 2752

Organisms possess an endogenous molecular clock which enables them to adapt to environmental rhythms and to synchronize their metabolism and behavior accordingly. Circadian rhythms govern daily oscillations in numerous physiological processes, and the underlying molecular components have been extensively described from fruit flies to mammals. Drosophila larvae have relatively simple nervous...

Université de Fribourg

Life-history evolution and the genetics of fitness components in drosophila melanogaster

Flatt, Thomas

In: Genetics, 2020, vol. 214, no. 1, p. 3–48

Life-history traits or “fitness components”—such as age and size at maturity, fecundity and fertility, age-specific rates of survival, and life span—are the major phenotypic determinants of Darwinian fitness. Analyzing the evolution and genetics of these phenotypic targets of selection is central to our understanding of adaptation. Due to its simple and rapid life cycle, cosmopolitan...

Université de Fribourg

Multilevel regulation of the glass locus during Drosophila eye development

Fritsch, Cornelia ; Bernardo-Garcia, F. Javier ; Humberg, Tim-Henning ; Mishra, Abhishek Kumar ; Miellet, Sara ; Almeida, Silvia ; Frochaux, Michael V. ; Deplancke, Bart ; Huber, Armin ; Sprecher, Simon G.

In: PLOS Genetics, 2019, vol. 15, no. 7, p. e1008269

Development of eye tissue is initiated by a conserved set of transcription factors termed retinal determination network (RDN). In the fruit fly Drosophila melanogaster, the zinc-finger transcription factor Glass acts directly downstream of the RDN to control identity of photoreceptor as well as non-photoreceptor cells. Tight control of spatial and temporal gene expression is a critical...

Université de Fribourg

Wolbachia modifies thermal preference in Drosophila melanogaster

Truitt, Amy M. ; Kapun, Martin ; Kaur, Rupinder ; Miller, Wolfgang J.

In: Environmental Microbiology, 2019, vol. 21, no. 9, p. 3259–3268

Environmental variation can have profound and direct effects on fitness, fecundity, and host–symbiont interactions. Replication rates of microbes within arthropod hosts, for example, are correlated with incubation temperature but less is known about the influence of host–symbiont dynamics on environmental preference. Hence, we conducted thermal preference (Tp) assays and tested if...

Université de Fribourg

Distinct genomic signals of lifespan and life history evolution in response to postponed reproduction and larval diet in Drosophila

Hoedjes, Katja M. ; van den Heuvel, Joost ; Kapun, Martin ; Keller, Laurent ; Flatt, Thomas ; Zwaan, Bas J.

In: Evolution Letters, 2019, p. -

Reproduction and diet are two major factors controlling the physiology of aging and life history, but how they interact to affect the evolution of longevity is unknown. Moreover, although studies of large‐effect mutants suggest an important role of nutrient sensing pathways in regulating aging, the genetic basis of evolutionary changes in lifespan remains poorly understood. To address these...

Consortium of Swiss Academic Libraries

Are copepods secondary hosts of Cycliophora?

Neves, Ricardo ; Bailly, Xavier ; Reichert, Heinrich

In: Organisms Diversity & Evolution, 2014, vol. 14, no. 4, p. 363-367

Université de Fribourg

The adaptive significance of chromosomal inversion polymorphisms in Drosophila melanogaster

Kapun, Martin ; Flatt, Thomas

In: Molecular Ecology, 2019, vol. 28, no. 6, p. 1263–1282

Chromosomal inversions, structural mutations that reverse a segment of a chromosome, cause suppression of recombination in the heterozygous state. Several studies have shown that inversion polymorphisms can form clines or fluctuate predictably in frequency over seasonal time spans. These observations prompted the hypothesis that chromosomal rearrangements might be subject to spatially and/or ...