61 Works

Data from: A novel biomechanical approach for animal behaviour recognition using accelerometers

Pritish Chakravarty, Gabriele Cozzi, Arpat Ozgul & Kamiar Aminian
Data from animal‐borne inertial sensors are widely used to investigate several aspects of an animal's life, such as energy expenditure, daily activity patterns and behaviour. Accelerometer data used in conjunction with machine learning algorithms have been the tool of choice for characterising animal behaviour. Although machine learning models perform reasonably well, they may not rely on meaningful features, nor lend themselves to physical interpretation of the classification rules. This lack of interpretability and control over...

Data from: Identification of ZEB1 as a central component of the adipogenic gene regulatory network

Carine Gubelmann, Petra C. Schwalie, Sunil K. Raghav, Eva Röder, Delessa Tenagne, Elke Kiehlmann, Sebastian M. Waszak, Andrea Corsinotti, Gilles Udin, Wiebke Holcombe, Gottfried Rudowsky, Didier Trono, Christian Wolfrum & Bart Deplancke
Adipose tissue is a key determinant of whole body metabolism and energy homeostasis. Unraveling the regulatory mechanisms underlying adipogenesis is therefore highly relevant from a biomedical perspective. Our current understanding of fat cell differentiation is centered on the transcriptional cascades driven by the C/EBP protein family and the master regulator PPARγ. To elucidate further components of the adipogenic gene regulatory network, we performed a large-scale transcription factor (TF) screen overexpressing 734 TFs in mouse pre-adipocytes...

Data from: One-shot learning and behavioral eligibility traces in sequential decision making

Marco P. Lehmann, He A. Xu, Vasiliki Liakoni, Michael H. Herzog, Wulfram Gerstner & Kerstin Preuschoff
In many daily tasks we make multiple decisions before reaching a goal. In order to learn such sequences of decisions, a mechanism to link earlier actions to later reward is necessary. Reinforcement learning theory suggests two classes of algorithms solving this credit assignment problem: In classic temporal-difference learning, earlier actions receive reward information only after multiple repetitions of the task, whereas models with eligibility traces reinforce entire sequences of actions from a single experience (one-shot)....

Physically asymmetric division of the C. elegans zygote ensures invariably successful embryogenesis

Radek Jankele, Pierre Gönczy & Rob Jelier
Asymmetric divisions that yield daughter cells of different sizes are frequent during early embryogenesis, but the importance of such a physical difference for successful development remains poorly understood. Here, we investigated this question using the first division of C. elegans embryos, which yields a large AB cell and a small P1 cell. We equalized AB and P1 sizes using acute genetic inactivation or optogenetic manipulation of the spindle positioning protein LIN-5. We uncovered that only...

Photosynthesis from stolen chloroplasts can support sea slug reproductive fitness

Paulo Cartaxana, Felisa Rey, Charlotte LeKieffre, Diana Lopes, Cedric Hubas, Jorge E. Spangenberg, Stéphane Escrig, Bruno Jesus, Gonçalo Calado, Rosário Domingues, Michael Kühl, Ricardo Calado, Anders Meibom & Sónia Cruz
Some sea slugs are able to steal functional chloroplasts (kleptoplasts) from their algal food sources, but the role and relevance of photosynthesis to the animal host remain controversial. While some researchers claim that kleptoplasts are slowly digestible ‘snacks’, others advocate that they enhance the overall fitness of sea slugs much more profoundly. Our analysis show light-dependent incorporation of 13C and 15N in the albumen gland and gonadal follicles of the sea slug Elysia timida, representing...

Data from: High rates of carbon and dinitrogen fixation suggest a critical role of benthic pioneer communities in the energy and nutrient dynamics of coral reefs

Florian Roth, Denis Karcher, Nils Rädecker, Sönke Hohn, Susana Carvalho, Timothy Thomson, Franziska Saalmann, Christian R. Voolstra, Benjamin Kürten, Ulrich Struck, Burton Jones & Christian Wild
1. Following coral mortality in tropical reefs, pioneer communities dominated by filamentous and crustose algae efficiently colonize substrates previously occupied by coral tissue. This phenomenon is particularly common after mass coral mortality following prolonged bleaching events associated with marine heatwaves. 2. Pioneer communities play an important role for the biological succession and reorganization of reefs after disturbance. However, their significance for critical ecosystem functions previously mediated by corals, such as the efficient cycling of carbon...

Milk production and environmental conditions of mountain-pastured Braunvieh cows between 2000 and 2015

Solange Duruz & Christine Flury
This dataset is a subset of the dataset used in the associated article, linking environmental data to milk records of mountain-pastured cows between 2000 and 2015. In particular it contains information on the cow and lactation cycle (lactation number, date of calving, date of first record in the alp, average quantity of milk over 3 milk records taken in the alp) and environmental condition (temperature humidity index, cold stress index, averaged over 3 and 30...

Ant behavioral maturation is mediated by a stochastic transition between two fundamental states

Thomas Richardson, Tomas Kay, Raphael Braunschweig, Opaline A. Journeau, Matthias Ruegg, Sean McGregor, Paolo De Los Rios & Laurent Keller
The remarkable ecological success of social insects is often attributed to their advanced division of labour, which is closely associated with temporal polyethism in which workers transition between different tasks as they age. Young nurses are typically found deep within the nest where they tend to the queen and the brood, whereas older foragers are found near the entrance and outside the nest. However, the individual-level maturation dynamics remain poorly understood because following individuals over...

Data from: Sampling strategy optimization to increase statistical power in landscape genomics: a simulation-based approach

Oliver Selmoni, Elia Vajana, Annie Guillaume, Estelle Rochat & Stéphane Joost
An increasing number of studies are using landscape genomics to investigate local adaptation in wild and domestic populations. The implementation of this approach requires the sampling phase to consider the complexity of environmental settings and the burden of logistic constraints. These important aspects are often underestimated in the literature dedicated to sampling strategies. In this study, we computed simulated genomic datasets to run against actual environmental data in order to trial landscape genomics experiments under...

Data from: Seascape genomics as a new tool to empower coral reef conservation strategies: an example on north-western Pacific Acropora digitifera

Oliver Selmoni, Estelle Rochat, Gael Lecellier, Véronique Berteaux-Lecellier & Stephane Joost
Coral reefs are suffering a major decline due to the environmental constraints imposed by climate change. Over the last 20 years, three major coral bleaching events occurred in concomitance with anomalous heat waves, provoking a severe loss of coral cover worldwide. The conservation strategies for preserving reefs, as they are implemented now, cannot cope with global climatic shifts. Consequently, researchers are advocating for preservation networks to be set-up to reinforce coral adaptive potential. However, the...

Data from: Organic functional group and organic matter concentrations from FT-IR measurements of particulate matter samples in the Southeastern Aerosol Research and Characterization (SEARCH) network from 2009-2016

Ann M. Dillner, Alexandra J. Boris, Satoshi Takahama, Andrew T. Weakley, Bruno Debus, Carley D. Frederickson, Martin Esparza-Sanchez, Charlotte Burke, Matteo Reggente, Stephanie L. Shaw & Eric S. Edgerton
This dataset contains organic functional group, organic matter (OM), organic carbon (OC) concentration measurements at five sites in the SEARCH network from 2009-2016. Spectra from each sample are included, in the format used in these papers. The sampling sites are urban Birmingham (BHM) and rural Centreville (CTR) in Alabama, urban Jefferson Street, Atlanta (JST) and rural Yorkville (YRK) in Georgia, and rural Outlying Landing Field (OLF) near Pensacola in Florida as well as a co-located...

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