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opencc-zeroDec 2016View details →

Data from: Experimental evidence that primate trichromacy is well suited for detecting primate social colour signals

Primate trichromatic colour vision has been hypothesized to be well tuned for detecting variation in facial coloration, which could be due to selection on either signal wavelengths or the sensitivities of the photoreceptors themselves. We provide one of the first empirical tests of this idea by asking whether, when compared with other visual systems, the information obtained through primate trichromatic vision confers an improved ability to detect the changes in facial colour that female macaque monkeys exhibit when they are proceptive. We presented pairs of digital images of faces of the same monkey to human observers and asked them to select the proceptive face. We tested images that simulated what would be seen by common catarrhine trichromatic vision, two additional trichromatic conditions and three dichromatic conditions. Performance under conditions of common catarrhine trichromacy, and trichromacy with narrowly separated LM cone pigments (common in female platyrrhines), was better than for evenly spaced trichromacy or for any of the dichromatic conditions. These results suggest that primate trichromatic colour vision confers excellent ability to detect meaningful variation in primate face colour. This is consistent with the hypothesis that social information detection has acted on either primate signal spectral reflectance or photoreceptor spectral tuning, or both.

opencc-zeroDec 2015View details →

Data from: Color pattern facilitates species recognition but not signal detection: a field test using robots

There are many factors that affect signal design, including the need for rapid signal detection and the ability to identify the signal as conspecific. Understanding these different sources of selection on signal design is essential to explain the evolution of both signal complexity and signal diversity. We assessed the relative importance of detection and recognition for signal design in the black-bearded gliding lizard, Draco melanopogon, which uses the extension and retraction of a large, black-and-white dewlap (or throat fan) in territorial communication. We presented free-living lizards with robots displaying dewlaps of different designs that varied in the proportion of the black and white components. We found no effect of dewlap brightness or design on the time it took for a lizard to detect the robot, consistent with the view that initial detection is likely to be primarily elicited by movement rather than specific color or pattern. However, males (but not females) responded with a greater intensity to the dewlap treatment that most resembled the natural dewlap color and design of the species. Furthermore, males were more likely to display to any dewlap color in the presence of a neighbor. These results suggest that dewlap pattern may play an important role in species recognition but has minimal influence on the initial detection of the signal. Importantly, our results also highlight that factors unrelated to discrimination, such as social cues and individual motivational state, may affect responses to species identity cues.

Figure 6 from: Edgecombe G, Lopez Gutierrez B, MacLeod N (2011) Detecting taxonomic signal in an under-utilised character system: geometric morphometrics of the forcipular coxae of Scutigeromorpha (Chilopoda). ZooKeys 156: 49-66. https://doi.org/10.3897/zookeys.156.1997

Figure 6 - Strobe models of five positions along the canonical variates indicated in Fig. 5. CV-1, CV-2, and CV-3 axes account for 79.5% of the observed between-species shape variation. Landmarks and semi-landmarks are superimposed in the figure to the right of each sequence to express the magnitudes and directions (arrows) of shape trends. In all models, the mesial margin of the coxa is depicted to the left, the lateral margin to the right.

Figure 5 from: Edgecombe G, Lopez Gutierrez B, MacLeod N (2011) Detecting taxonomic signal in an under-utilised character system: geometric morphometrics of the forcipular coxae of Scutigeromorpha (Chilopoda). ZooKeys 156: 49-66. https://doi.org/10.3897/zookeys.156.1997

Figure 5 - Results of the CVA of coxal shape data for all eight species, showing the subspaces formed by the first three discriminant axes, which together account for more than 79% of observed between-group shape variation. Within each subspace plot the black circles represent the coordinate locations for each of the five along-axis shape models depicted in Fig. 6.

Figure 4 from: Edgecombe G, Lopez Gutierrez B, MacLeod N (2011) Detecting taxonomic signal in an under-utilised character system: geometric morphometrics of the forcipular coxae of Scutigeromorpha (Chilopoda). ZooKeys 156: 49-66. https://doi.org/10.3897/zookeys.156.1997

Figure 4 - Scatterplots of Procrustes PCA scores for coxal shape data. The first two shape variation axes (top) together account for 62.63% of the observed shape variation; PC-2 and PC-3 axes (bottom) together account for 27.58% of the observed shape variation.

Figure 3 from: Edgecombe G, Lopez Gutierrez B, MacLeod N (2011) Detecting taxonomic signal in an under-utilised character system: geometric morphometrics of the forcipular coxae of Scutigeromorpha (Chilopoda). ZooKeys 156: 49-66. https://doi.org/10.3897/zookeys.156.1997

Figure 3 - Thereuopoda longicornis scatterplot of coxal shape data along the discriminant subspace formed by the first two CV axes, which together account for 74.17% of observed between-group shape variation.

Figure 2 from: Edgecombe G, Lopez Gutierrez B, MacLeod N (2011) Detecting taxonomic signal in an under-utilised character system: geometric morphometrics of the forcipular coxae of Scutigeromorpha (Chilopoda). ZooKeys 156: 49-66. https://doi.org/10.3897/zookeys.156.1997

Figure 2 - Landmarks (L1-L10) used in morphometric analysis. Diagonal line to L1 is the longest line from anterolateral to posteromedial corners of the coxa. Spine-bristles numbered 1-4 (blue) from interior to exterior. Throughout text, left and right coxae refer to dorsal orientation (inverted 180° relative to this ventral view).

Figure 1 from: Edgecombe G, Lopez Gutierrez B, MacLeod N (2011) Detecting taxonomic signal in an under-utilised character system: geometric morphometrics of the forcipular coxae of Scutigeromorpha (Chilopoda). ZooKeys 156: 49-66. https://doi.org/10.3897/zookeys.156.1997

Figure 1 - Ventral view of head and forcipules of Thereuopoda longicornis placed in a standard horizontal position. BM 1952.9.8.574-575, Kuching, Sarawak, Malaysia.

opencc-by-4.0May 2016View details →

Figure 1 from: Rosenblad MA, Martín MP, Tedersoo L, Ryberg M, Larsson E, Wurzbacher C, Abarenkov K, Nilsson RH (2016) Detection of signal recognition particle (SRP) RNAs in the nuclear ribosomal internal transcribed spacer 1 (ITS1) of three lineages of ectomycorrhizal fungi (Agaricomycetes, Basidiomycota). MycoKeys 13: 21-33. https://doi.org/10.3897/mycokeys.13.8579

Figure 1 - Schematic illustration of the fungal ITS region and neighboring rDNA genes. The subregions ITS1, 5.8S, and ITS2 of the ITS region are indicated along with the SRP RNA in the first part of the ITS1. The absolute positions of the subregions and the SRP RNA are provided in Suppl. material 2.

opencc-by-4.0Dec 2022View details →

A Dataset of Patients Reviews on Doctissimo Forum of the 2017 Levothyrox Scandal in France for the Early Detection of Safety Signals from Social Networks

In France, the Levothyrox case is an extremely mediated pharmacovogilance case which received a lot of media coverage in August 2017 following the change, in March of the same year, of the pharmaceutical formulation of the specialty (modification of the type and content of excipients at the initial request of the french's national agency of drug safety - ANSM). Many patients have experienced adverse effects related to fluctuating thyroid function when they were already treated and stabilized with Levothyrox (3 million french patients with thyroid pathologies). This dataset presents patients posts collected from the French health forum <a href="http://forum.doctissimo.fr">Doctissimo</a>, Thyroid and Endocrine Problems sub-forum using a web scraping algorithm. The main idea is to find out whether the result of the processing of the data exchanged on the Doctissimo forum can be used in pharmacovigilance and whether it would have allowed better reactivity from the  public authorities and responsible laboratories. Doctissimo was chosen since it is the most used health forum  in France by drug consuming patients (ranking first with 61\% of users). Other sources of information could have been chosen such as Twitter which is the most used website in the world by drug consuming patients. Twitter brings together 52% of these patients against 27% for all discussion forums combined. However, access to Twitter data is chargeable, which is why Doctissimo has been selected. The extraction was performed on the ``Thyroide et Problemes Endocriniens (Thyroid and Endocrine Problems)''  sub-forum with the keyword ``levothyrox''. The choice of extracting information from this forum using the particular relevant keyword ``levothyrox'' was to limit the amount of extracted data. Indeed, during data extraction, Doctissimo blocks the scraping task when reaching a limit of 8,000 extracted discussion threads, since it detects an automatic machine activity. We collected the messages written between years 2000 and 2020. This resulted in a total of 110,260  comments written by a total of 7650 subjects. For each of the comments, we extract the date, pseudo of the person who wrote the comment, the comment's text, and  URL link.

publicOct 2018View details →

Data from: Detection of persistent signals and its relation to coherent feedforward loops

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publicMay 2017View details →

Data from: Experimental evidence that primate trichromacy is well suited for detecting primate social colour signals

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publicNov 2016View details →

Data from: Color pattern facilitates species recognition but not signal detection: a field test using robots

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