An Expressive Body Language Underlies Drosophila Courtship Behavior

Stoop, Ruedi; Arthur, Benjamin I.

doi:10.1007/978-1-4020-9143-8_13

Cited by 2 publications

(2 citation statements)

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“…Irreducible unstable periodic orbits (IUPO) have been shown to capture the complexity of chaotic systems in a condensed manner. [1][2][3][4][5][6][7] As IUPO are generally composed of a number of network elements, and since the whole network can be exhausted by IUPO in an efficient and well-controlled manner, they are highly suitable for a mesoscopic description of complex networks. In the past, IUPO have been used to extract salient, essentially macroscopic, properties from dynamical systems.…”

Section: Introductionmentioning

confidence: 99%

“…In the past, IUPO have been used to extract salient, essentially macroscopic, properties from dynamical systems. [1][2][3][4][5][6][7] We will show that a similar approach allows one to extract mesoscopic properties from general complex networks, where the dynamical notion of "instability" is generally replaced by a corresponding probabilistic branching property. We will finally demonstrate how, upon a specification of the general method, we can cope with the presence of noise.…”

Section: Introductionmentioning

confidence: 99%

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Mesocopic comparison of complex networks based on periodic orbits

Stoop

Joller

2011

Chaos: An Interdisciplinary Journal of Nonlinear Science

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Complex noiseless dynamical systems can be represented in a compressed manner by unstable periodic orbits. It is unknown, however, how to use this technique to obtain a suitable notion of similarity among them, how to extend such an approach to more general complex networks, and how to apply such a method in the important case of noisy systems. Our approach provides a solution to these questions. For a proof-of-concept, we consider Drosophila's precopulatory courtship, where our method reveals the existence of a complex grammar (similar to those found in complex physical systems and in language), leading to the conclusion that the observed grammar is very unlikely the product of chance. Complex noiseless dynamical systems can be represented in a compressed manner by unstable periodic orbits. It is unknown, however, how to use this technique to obtain a suitable notion of similarity among them, how to extend such an approach to more general complex networks, and how to apply such a method in the important case of noisy systems. Our approach provides a solution to these questions. For a proof-of-concept, we consider Drosophila's precopulatory courtship, where our method reveals the existence of a complex grammar (similar to those found in complex physical systems and in language), leading to the conclusion that the observed grammar is very unlikely the product of chance. Complex networks are usually described in terms of abstract network structures, where a node often comes equipped with a rule characterizing its local activity, or by using Markov random walks models. For their understanding, however, intermediate scales may play a distinguished role. This is the case if measures characterizing the network as a whole are too crude for providing the desired insights and if the local node dynamics do not provide an overview of the network. We formulate here in precise mathematical terms such as intermediate, mesoscopic, description of the network, based on periodic orbits as the mesoscopic observables. From these observables, we develop a method for measuring the similarity of graphs, a challenge of great importance that seems not to have been solved in the generality put forward here. An obvious typical application of our approach would be, e.g., the characterization of behavior, with robotics motion planning or the characterization of animal courtship behavior as prominent examples. Animal courtship, which we chose as the real-world testing case of our approach, is a puzzling phenomenon. Its function and purpose have largely remained unexplained, not least because of the generally large and complex underlying network structure and the lack of methods able to deal with such situations. The driving biological questions that we wish to answer here are: Could it be that during courtship, nontrivial information about a prospective mate is conveyed? And if so, how is this information organized and what purpose could it serve? The proposed approach provides partial answers to these questions. We verify that Dro...

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Mesocopic comparison of complex networks based on periodic orbits

Stoop

Joller

2011

Chaos: An Interdisciplinary Journal of Nonlinear Science

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The Genetics of Cuticular Hydrocarbon Profiles in the Fruit Fly Drosophila simulans

Sharma

Mitchell

Hunt

et al. 2012

Journal of Heredity

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Female mate choice is one mechanism of sexual selection and, provided there is adequate genetic variation in the male traits that are the target of this selection, they will evolve via female choice. Cuticular hydrocarbons (CHCs) are important in Drosophila mate choice, but relatively little is known about the underlying genetic architecture of CHC profiles in Drosophila simulans. Here, we used gas chromatography-mass spectrometry to investigate patterns of genetic variation in the CHC profiles of male and female D. simulans using isofemale lines. We found substantial genetic variation for CHC profiles and individual CHC components, and individual CHCs were frequently strongly genetically correlated, with a tendency for negative covariance between long- and short-chain CHCs in males. Intersexual genetic covariances were often weak and frequently differed in sign. These findings are novel and significant, highlighting the previously unexplored genetic architecture of CHCs in D. simulans and suggest that this architecture may facilitate sex-specific CHC evolution.

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An Expressive Body Language Underlies Drosophila Courtship Behavior

Cited by 2 publications

References 18 publications

Mesocopic comparison of complex networks based on periodic orbits

Mesocopic comparison of complex networks based on periodic orbits

The Genetics of Cuticular Hydrocarbon Profiles in the Fruit Fly Drosophila simulans

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