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An epigenetic change in a moth is generated by temperature and transmitted to many subsequent generations mediated by RNA.
PLoS One
March 2024
Department of Anthropology, University of West Bohemia, Pilsen, Czech Republic.
Epigenetic changes in sexually reproducing animals may be transmitted usually only through a few generations. Here we discovered a case where epigenetic change lasts 40 generations. This epigenetic phenomenon occurs in the short antennae (sa) mutation of the flour moth (Ephestia kuehniella).
View Article and Find Full Text PDFEvolution of homology: From archetype towards a holistic concept of cell type.
J Morphol
April 2023
Laboratory for Mathematic Methods and Models in Bioinformatics, Institute for Information Transmission Problems (Kharkevich Institute), Russian Academy of Sciences, Moscow, Russia.
The concept of homology lies in the heart of comparative biological science. The distinction between homology as structure and analogy as function has shaped the evolutionary paradigm for a century and formed the axis of comparative anatomy and embryology, which accept the identity of structure as a ground measure of relatedness. The advent of single-cell genomics overturned the classical view of cell homology by establishing a backbone regulatory identity of cell types, the basic biological units bridging the molecular and phenotypic dimensions, to reveal that the cell is the most flexible unit of living matter and that many approaches of classical biology need to be revised to understand evolution and diversity at the cellular level.
View Article and Find Full Text PDFOntogenetic plasticity in cranial morphology is associated with a change in the food processing behavior in Alpine newts.
Front Zool
November 2020
Institute of Zoology and Evolutionary Research, Friedrich Schiller University Jena, Erbertstraße 1, D-07743, Jena, Germany.
Background: The feeding apparatus of salamanders consists mainly of the cranium, mandible, teeth, hyobranchial apparatus and the muscles of the cranial region. The morphology of the feeding apparatus in turn determines the boundary conditions for possible food processing (i.e.
View Article and Find Full Text PDFAnamorphic development and extended parental care in a 520 million-year-old stem-group euarthropod from China.
BMC Evol Biol
September 2018
Department of Geology, State Key Laboratory of Continental Dynamics, Shaanxi Key Laboratory of Early Life and Environment, Northwest University, Xian, 710069, People's Republic of China.
Background: Extended parental care is a complex reproductive strategy in which progenitors actively look after their offspring up to - or beyond - the first juvenile stage in order to maximize their fitness. Although the euarthropod fossil record has produced several examples of brood-care, the appearance of extended parental care within this phylum remains poorly constrained given the scarcity of developmental data for Palaeozoic stem-group representatives that would link juvenile and adult forms in an ontogenetic sequence.
Results: Here, we describe the post-embryonic growth of Fuxianhuia protensa from the early Cambrian Chengjiang Lagerstätte in South China.
Ornamentation of dermal bones of and its ecological implications.
PeerJ
July 2018
Department of Biosystematics, University of Opole, Opole, Poland.
Background: Amphibians are animals strongly dependent on environmental conditions, like temperature, water accessibility, and the trophic state of the reservoirs. Thus, they can be used in modern palaeoenvironmental analysis, reflecting ecological condition of the biotope.
Methods: To analyse the observed diversity in the temnospondyl from Late Triassic deposits in Krasiejów (Opole Voivodeship, Poland), the characteristics of the ornamentation (such as grooves, ridges, tubercules) of 25 clavicles and 13 skulls were observed on macro- and microscales, including the use of a scanning electron microscope for high magnification.
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