Results 171 to 180 of about 17,201 (206)
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Nature Ecology & Evolution, 2017
A focus on sea anemones throws the classic concept of germ layer homology on its head, as cnidarians are found to possess the gene expression programmes for three, rather than two, germ layers.
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A focus on sea anemones throws the classic concept of germ layer homology on its head, as cnidarians are found to possess the gene expression programmes for three, rather than two, germ layers.
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2018
To understand the ancestral and evolved roles of zic homologs, it is important to reconstruct the putative roles of ancient zic homologs in the animal phylogeny. Most studies of zic genes have been conducted in model systems that are members of the bilaterian phylum. However, two additional phyla have zic homologs encoded in their genomes.
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To understand the ancestral and evolved roles of zic homologs, it is important to reconstruct the putative roles of ancient zic homologs in the animal phylogeny. Most studies of zic genes have been conducted in model systems that are members of the bilaterian phylum. However, two additional phyla have zic homologs encoded in their genomes.
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The nervous systems of Cnidarians
1995Cnidarians have simple nervous systems and it was probably within this group or a closely-related ancestor that nervous systems first evolved. The basic plan of the cnidarian nervous system is that of a nerve net which, at some locations, has condensed to form nerve plexuses, or circular or longitudinal nerve tracts which may be syncytia.
Grimmelikhuijzen, Cornelis J.P. +1 more
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Cnidarian chemical neurotransmission, an updated overview
Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology, 2007The ultrastructural, histochemical, immunocytochemical, biochemical, molecular, behavioral and physiological evidence for non-peptidergic and peptidergic chemical neurotransmission in the Anthozoa, Hydrozoa, Scyphozoa and Cubozoa is surveyed. With the possible exception of data for the catecholamines and peptides in some animals, the set of cumulative ...
Kass-Simon, G., Pierobon, Paola
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Bioluminescent Marine Cnidarians
2022This chapter deals with the total luminescent fauna of planktonic hydrozoa and scyphozoa, emission maxima in observed species of planktonic hydrozoa and scyphozoa, the description of luminescent marine species of planktonic hydrozoa and scyphozoa and their mechanism of bioluminescence.
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Canadian Journal of Zoology, 2002
Cnidarians are the most primitive present-day invertebrates to have multicellular light-detecting organs, called ocelli (eyes). These photodetectors include simple eyespots, pigment cups, complex pigment cups with lenses, and camera-type eyes with a cornea, lens, and retina.
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Cnidarians are the most primitive present-day invertebrates to have multicellular light-detecting organs, called ocelli (eyes). These photodetectors include simple eyespots, pigment cups, complex pigment cups with lenses, and camera-type eyes with a cornea, lens, and retina.
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2009
Abstract The Phylum Cnidaria is ancient and diverse in terms of size and body shape, and includes the sea fans, sea pens, sea anemones, corals, hydroids, and jellyAsh (Fig. 1). Cnidarians possess two cell layers (diploblastic), the outer ectoderm and the inner endoderm, separated by an acellular mesoglea, or partially cellular mesenchyme
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Abstract The Phylum Cnidaria is ancient and diverse in terms of size and body shape, and includes the sea fans, sea pens, sea anemones, corals, hydroids, and jellyAsh (Fig. 1). Cnidarians possess two cell layers (diploblastic), the outer ectoderm and the inner endoderm, separated by an acellular mesoglea, or partially cellular mesenchyme
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Regulatory volume decrease (RVD) in Cnidarians
Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology, 2008Comp. Biochem. Physiol. part A, 151 (1), supplement Sept 2008 - ISSN:
MARINO, Angela +2 more
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2017
Abstract Important cnidarian contributions to our understanding of nervous system evolution may be found in the arrangement of conducting systems and their interactions. We see multiple, diffuse systems that interact to produce specific behaviors, the compression of conducting systems into compact directional or bidirectional conduction ...
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Abstract Important cnidarian contributions to our understanding of nervous system evolution may be found in the arrangement of conducting systems and their interactions. We see multiple, diffuse systems that interact to produce specific behaviors, the compression of conducting systems into compact directional or bidirectional conduction ...
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Marine Vertebrates, Cnidarians, and Mollusks
2016Jellyfish . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Pharmacology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Pathophysiology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
L. Keith French, B. Zane Horowitz
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