Results 71 to 80 of about 1,110 (176)
Convergent evolution of neural systems in ctenophores [PDF]
Journal of Experimental Biology, 2015 Neurons are defined as polarized secretory cells specializing in directional propagation of electrical signals leading to the release of extracellular messengers – features that enable them to transmit information, primarily chemical in nature, beyond their immediate neighbors without affecting all intervening cells en route.
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PLoS ONE, 2017 Photoproteins are responsible for light emission in a variety of marine ctenophores and coelenterates. The mechanism of light emission in both families occurs via the same reaction.
Maryam Molakarimi +7 more
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Ctenophores and the evolutionary origin(s) of neurons
Trends in Neurosciences, 2022 Ctenophores (commonly known as comb jellies) are among the earliest branching extant lineages of the animal kingdom. Here, I present a brief overview of the ctenophore nervous system, discussing its cellular architecture and molecular composition, as well as insights it offers into the early evolution of neurons and chemical neurotransmission.
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Knowledge and Management of Aquatic Ecosystems, 2016 Biotic changes and a salinity increase (from 13 to 40 g.L-1) occurred in Lake Qarun (Egypt) since 1901. Was salinity increasing a cause of observed biotic changes? To answer this question we used benthos as a model group.
Shadrin N. V. +4 more
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Journal of Asia-Pacific Biodiversity, 2019 This report presents the first occurrence of the Indo-Pacific benthic ctenophore Coeloplana (Benthoplana) meteoris (Thiel, 1968) in the western part of the Arabian-Persian Gulf, extending its range to 2000km, a record that illustrates a cyclic event ...
Bruno Welter Giraldes
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A blastoporal organizer in a ctenophore
NatureAbstract In an iconic experiment in 1924, Hilde Mangold and Hans Spemann established that the dorsal blastopore lip of amphibian embryos functions as an organizer and induces a secondary body axis when transplanted into a host embryo 1 .
Stanislav Kremnyov +3 more
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Making Neurobots and Chimerical Ctenophores
Abstract Making living machines using biological materials (cells, tissues, and organs) is one of the challenges in developmental biology and modern biomedicine. Constraints in regeneration potential and immune self-defense mechanisms limit the progress in the field.
Leonid L Moroz, Tigran P. Norekian
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RELATIONS BETWEEN NERVES AND CILIA IN CTENOPHORES [PDF]
American Zoologist, 1965 Waves of excitation, visible as ciliary waves, pass along the elongated cells of the ciliated grooves to the comb plates. The frequency of waves is controlled by the loading of the statolith on the balancer cilia, which stand at the head of the grooves. They are primitive mechanoreceptor cilia.
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Majallah-i ̒Ilmī-i Shīlāt-i Īrān, 2008 In this study, spatial distribution of the invasive ctenophore Mnemiopsis leidyi in the littoral waters of the Caspian Sea was evaluated using data collected at stations during the spring 2002 cruise.
M. Moghim; A. Rohi
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Sponges, Cnidarians, and Ctenophores
, 2001 research
Debrenne, Françoise +5 more
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