Results 51 to 60 of about 2,229 (180)
New genomic data and analyses challenge the traditional vision of animal epithelium evolution
BMC Genomics, 2018 Background The emergence of epithelia was the foundation of metazoan expansion. Epithelial tissues are a hallmark of metazoans deeply rooted in the evolution of their complex developmental morphogenesis processes.
Hassiba Belahbib +6 more
doaj +1 more source
Frontiers in Cell and Developmental Biology, 2022 Placozoans are essential reference species for understanding the origins and evolution of animal organization. However, little is known about their life strategies in natural habitats.
Daria Y. Romanova +5 more
doaj +1 more source
The evolution of reproduction in Ediacaran–Cambrian metazoans
Biological Reviews, Volume 100, Issue 5, Page 2084-2098, October 2025.ABSTRACT The evolution of reproductive style is a fundamental aspect of metazoan life history but has not been explored holistically through the Ediacaran–Cambrian rise of metazoans. Recent molecular clock analyses based on only unequivocal metazoan fossil calibrations suggest that Porifera were present by at least 590 million years ago (Ma), all major
Rachel A. Wood, Mary L. Droser
wiley +1 more source
Amino acids integrate behaviors in nerveless placozoans
Frontiers in Neuroscience, 2023 Placozoans are the simplest known free-living animals without recognized neurons and muscles but a complex behavioral repertoire. However, mechanisms and cellular bases of behavioral coordination are unknown.
Mikhail A. Nikitin +4 more
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Identification, distribution and molecular evolution of the pacifastin gene family in Metazoa
BMC Evolutionary Biology, 2009 Background Members of the pacifastin family are serine peptidase inhibitors, most of which are produced as multi domain precursor proteins. Structural and biochemical characteristics of insect pacifastin-like peptides have been studied intensively, but ...
Van Soest Sofie +4 more
doaj +1 more source
Communications Biology, 2023 ASIC channels are bilaterian proton-gated sodium channels belonging to the large and functionally-diverse Deg/ENaC family that also includes peptide- and mechanically-gated channels.
Wassim Elkhatib +7 more
doaj +1 more source
A Reassessment of the Coprostane Biomarker in the Ediacaran With Implications for Dickinsonia
Geobiology, Volume 23, Issue 4, July/August 2025.ABSTRACT The discovery of cholestane in animal fossils from the Ediacaran (571–541 million years ago) has generated much excitement, but it is not the only interesting biomarker recovered. Coprostane, a geologically stable form of coprostanol, has also been found in Ediacaran rocks.
Christopher Mulligan, David A. Gold
wiley +1 more source
Differentiation of Crystal Cells, Gravity-Sensing Cells in the Placozoan Trichoplax adhaerens
Journal of Marine Science and Engineering, 2021 Trichoplax adhaerens are simple animals with no nervous system, muscles or body axis. Nevertheless, Trichoplax demonstrate complex behaviors, including responses to the direction of the gravity vector.
Tatiana D. Mayorova
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Ecology and Evolution, Volume 15, Issue 4, April 2025.Our study looks at the association between microRNA expression and disease resistance in Caribbean staghorn corals infected with White Band Disease. We find three microRNAs differentially expressed due to disease resistance with putative targets involved in innate immunity.
Brecia A. Despard +3 more
wiley +1 more source
Evolution of g-type lysozymes in metazoa: insights into immunity and digestive adaptations
Frontiers in Cell and Developmental BiologyExploring the evolutionary dynamics of lysozymes is critical for advancing our knowledge of adaptations in immune and digestive systems. Here, we characterize the distribution of a unique class of lysozymes known as g-type, which hydrolyze key components
Krishanu Mukherjee +2 more
doaj +1 more source