Studies on woloszynskioid dinoflagellates X: ultrastructure, phylogeny and colour variation in Tovellia rubescens n. sp. (Dinophyceae)

The external morphology and internal cell fine structure of a new species of Tovelliaceae, Tovellia rubescens n. sp., is described. Phylogenetic analyses based on partial LSU rDNA sequences place the new species in a clade containing Tovellia species that accumulate red pigments and identify T. aveirensis as its closest known relative. Cells of T. rubescens n. sp. were mostly round and had the cingulum located near the middle, with its ends displaced about one cingular width. Small numbers of distinctly flat cells appeared in culture batches; their significance could not be determined. Cells of the new species in culture batches progressively changed from a yellowish-green, mainly due to chloroplast colour, to a reddish-brown colour that appeared associated with lipid bodies. The switch to a reddish colour happened earlier in batches grown in medium lacking sources of N or P. Pigment analyses by HPLC-MS/MS revealed the presence of astaxanthin and astaxanthin-related metabolites in the new species, but also in T. aveirensis, in which a reddish colour was never observed. The chloroplast arrangement of T. rubescens n. sp. resembled that of T. aveirensis, with lobes radiating from a central pyrenoid complex. The flagellar apparatus and pusular system fell within the general features described from other Tovelliaceae. A row of microtubules interpretable as a microtubular strand of the peduncle was present. Spiny resting cysts with red contents and an ITS sequence identical to that of cultured material of the new species were found in the original locality.publishe

Trustworthiness of Human Faces

This project presents trustworthiness assessments for 231 neutral faces of young adults derived from well-known face databases. Data were collected online and in the laboratory from a large Portuguese sample. Furthermore, we report data on the participants’ sex, age, years of education and marital status. We also report the participants’ self-perceived trustworthiness and what the participants think others perceive of their trustworthiness. Two data sets are provided: one presenting these data by participant and another presenting the data by stimulus. In the last, we also organized the data according to some of the individual variables mentioned above: sex, age, years of education, the participants’ self- and others-perceived trustworthiness. These data are presented separately for the online and laboratory samples. We recommend downloading the data files in order to see the information properly. A data report with the full details of the study can be found here: Pandeirada, J. N. S., Fernandes, N. L., Madeira, M., Marinho, P.I., & Vasconcelos, M. (2022). Can I trust this person? Evaluations of trustworthiness from faces and relevant individual variables. Frontiers in Psychology, 13: 857511. https://doi.org/10.3389/fpsyg.2022.857511 Previous reports on the inferences of attractiveness (Pandeirada et al., 2020) and dominance (Pandeirada et al., 2022) for the set of stimuli used in this project have been presented. More information can be found here and in the corresponding publications: Attractiveness of Human Faces: https://osf.io/vudr2/?view_only=0e732a0add6149069aa7c26aa57cba4f Pandeirada, J. N. S., Fernandes, N. L., & Vasconcelos, M. (2020). Attractiveness of human faces: Norms by sex, sexual orientation, age, relationship stability, and own attractiveness judgements. Frontiers in Psychology, 11:419. https://doi.org/10.3389/fpsyg.2020.00419 Dominance of Human Faces: https://osf.io/pm2tc/?view_only=2aa89739166742e1b4344b93c5ccd809 Pandeirada, J. N. S., Madeira, M., Fernandes, N. L., Marinho, P.I., & Vasconcelos, M. (2022). Judgements of social dominance from faces and related variables. Frontiers in Psychology, 13: 873147. https://doi.org/10.3389/fpsyg.2022.87314