Prof. Dr. Peter Crnokrak

Visual & Experience Design

Prof. Crnokrak has been with the UE since 2019 and is currently the Program Coordinator of the Visual & Experience Design Program for the UE Innovation Hub in Potsdam, as well as a Professor for UE Berlin. Prof. Crnokrak has competencies in areas of Data Analysis & Statistics, Data Visualization, Computational Design, UI/UX Design, Experience Design, Generative Design, and Cliodynamics. Prof. Crnokrak guides the students of UE and trains the critical eye, help shape the innovative spirit, and sharpens the perspective “between balancing creative and commercial”.


The trade-off to macroptery in the cricket Gryllus firmus: a path analysis in males


Among the Orthoptera, wing dimorphism, where one morph is long-winged and flight capable while the other is short-winged and flight incapable, is common and believed to be maintained in populations due to trade-offs to flight capability. In males, macropterous individuals call less than micropterous individuals and as a consequence obtain fewer matings. This trade-off is hypothesized to be mediated by the energetic costs of calling. In this paper we report results for a path analysis examining lipid weight and DLM (dorso longitudinal muscle) condition of male Gryllus firmus. We found that as DLM condition changes from a nonfunctional to a functional state, call duration decreases, and as lipid weight increases, call duration increases. The most important linked path was wing morph → DLM condition → call duration. This model is consistent with the prediction that the trade-off between wing morph and call duration is mediated via DLM and lipid stores.

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Published by Wiley
2002, English
12 pages