Σφακιανάκης Αλέξανδρος
ΩτοΡινοΛαρυγγολόγος
Αναπαύσεως 5 Άγιος Νικόλαος
Κρήτη 72100
00302841026182
00306932607174
alsfakia@gmail.com

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! # Ola via Alexandros G.Sfakianakis on Inoreader

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Τετάρτη 12 Αυγούστου 2020

 

A machine learning based approach to the segmentation of micro CT data in archaeological and evolutionary sciences [CONFIRMATORY RESULTS]
Segmentation of high-resolution tomographic data is often an extremely time-consuming task and until recently, has usually relied upon researchers manually selecting materials of interest slice by slice. With the exponential rise in datasets being acquired, this is clearly not a sustainable workflow. In this paper, we apply the Trainable Weka Segmentation (a freely available plugin for the multiplatform program ImageJ) to typical datasets found in archaeological and evolutionary sciences. We demonstrate...
bioRxiv Subject Collection: Evolutionary Biology
Wed Aug 12, 2020 03:00
Analysis of fungal genomes reveals commonalities of intron loss/gain and functions in intron-poor species [NEW RESULTS]
Current evolutionary reconstructions predict that early eukaryotic ancestors including both the last common ancestor of eukaryotes and of all fungi had intron-rich genomes. However, some extant eukaryotes have few introns, raising the question as to why these few introns are retained. Here we have used recently available fungal genomes to address this question. Evolutionary reconstruction of intron presence and absence using 263 diverse fungal species support the idea that massive intron loss has...
bioRxiv Subject Collection: Evolutionary Biology
Wed Aug 12, 2020 03:00
Molecular signatures of sexual communication in the phlebotomine sand flies [NEW RESULTS]
Phlebotomine sand flies employ an elaborate system of pheromone communication wherein males produce pheromones that attracts other males to leks (thus acting as aggregation pheromone) and females to the lekking males (sex pheromone). In addition, the type of pheromone produced varies among populations. Despite the numerous studies on sand fly chemical communication, little is known of their chemosensory genome. Chemoreceptors interact with chemicals in an organisms environment to elicit essential...
bioRxiv Subject Collection: Evolutionary Biology
Wed Aug 12, 2020 03:00
Unidirectional response to bidirectional selection on body size II Quantitative genetics [NEW RESULTS]
Anticipating the genetic and phenotypic changes induced by natural or artificial selection requires reliable estimates of trait evolvabilities (genetic variances and covariances). However, whether or not multivariate quantitative genetics models are able to predict precisely the evolution of traits of interest, especially fitness-related, life-history traits, remains an open empirical question. Here, we assessed to what extent the response to bivariate artificial selection on both body size and maturity...
bioRxiv Subject Collection: Evolutionary Biology
Wed Aug 12, 2020 03:00
Density-dependent natural selection mediates harvest-induced trait changes [NEW RESULTS]
Rapid life-history changes caused by size-selective harvesting are often interpreted as a response to direct harvest selection against a large body size. However, similar trait changes may result from a harvest-induced relaxation of natural selection for a large body size via density-dependent selection. Here, we show evidence of such density-dependent selection favouring large-bodied individuals at high population densities, in replicated pond populations of medaka fish. Harvesting, in contrast,...
bioRxiv Subject Collection: Evolutionary Biology
Wed Aug 12, 2020 03:00
Taxonomic Uncertainty and the Anomaly Zone: Phylogenomics Disentangle a Rapid Radiation to Resolve Contentious Species (Gila robusta complex) in the Colorado River [NEW RESULTS]
Species is an indisputable unit for biodiversity conservation, yet their delimitation is fraught with both conceptual and methodological difficulties. A classic example is the taxonomic controversy surrounding the Gila robusta complex in the lower Colorado River of southwestern North America. Nominal species designations were originally defined according to weakly diagnostic morphological differences that conflicted with traditional genetic analyses. Consequently, the complex was re-defined as a...
bioRxiv Subject Collection: Evolutionary Biology
Wed Aug 12, 2020 03:00

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