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RCPedia: a global resource for studying and exploring retrocopies in diverse species.
Bioinformatics
September 2024
Hospital Sirio-Libanes, São Paulo 01308-060, Brazil.
Motivation: Gene retrocopies arise from the reverse transcription and genomic insertion of processed mRNA transcripts. These elements have significantly contributed to genetic diversity and novelties throughout the evolution of many species. However, the study of retrocopies has been challenging, owing to the absence of comprehensive, complete, and user-friendly databases for diverse species.
View Article and Find Full Text PDFEuropean common frogs determine migratory direction by inclination magnetic compass and show diurnal variation in orientation.
J Exp Biol
February 2024
Department of Vertebrate Zoology, Faculty of Biology, Lomonosov Moscow State University, Leninskie gory, 1, k.12, Moscow 119234, Russia.
Animals can use two variants of the magnetic compass: the 'polar compass' or the 'inclination compass'. Among vertebrates, the compass type has been identified for salmon, mole rats, birds, turtles and urodeles. However, no experiments have been conducted to determine the compass variant in anurans.
View Article and Find Full Text PDFSex-related communicative functions of voice spectral energy in human chorusing.
Biol Lett
November 2023
Neuroscience of Perception and Action Lab, Italian Institute of Technology, Rome, Italy.
Music is a human communicative art whose evolutionary origins may lie in capacities that support cooperation and/or competition. A mixed account favouring simultaneous cooperation and competition draws on analogous interactive displays produced by collectively signalling non-human animals (e.g.
View Article and Find Full Text PDFConvergent Anuran Middle Ear Loss Lacks a Universal, Adaptive Explanation.
Brain Behav Evol
February 2024
Biology Department, Colorado State University, Fort Collins, Colorado, USA.
Introduction: Shared selection pressures often explain convergent trait loss, yet anurans (frogs and toads) have lost their middle ears at least 38 times with no obvious shared selection pressures unifying "earless" taxa. Anuran tympanic middle ear loss is especially perplexing because acoustic communication is dominant within Anura and tympanic middle ears enhance airborne hearing in most tetrapods.
Methods: Here, we use phylogenetic comparative methods to examine whether particular geographic ranges, microhabitats, activity patterns, or aspects of acoustic communication are associated with anuran tympanic middle ear loss.
Locomotion rhythm makes power and speed.
Sci Rep
August 2023
Department of Mechanical Engineering and Materials Science, Duke University, Durham, NC, 27708-0300, USA.
This article addresses two questions, why certain animals (frogs, breaststroke swimmers, hovering fliers, jellyfish) push rapidly against the surrounding fluid and then reach forward slowly, and whether this rhythm of propulsion is a manifestation of the universal phenomenon of design evolution in nature. Emphasis is on the distribution of time periods of locomotion in which, during the driving phase of cyclic movement (the motive stroke, phases 1 and 2, in alternating sequence with the dissipative stroke, phase 3), the work is generated (phase 1) and dissipated (phase 2). The relative lengths of the characteristic times t and t of the phases 1 and 2, are predicted.
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