Results 171 to 180 of about 9,525 (213)
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Pigment Effector Cells in a Cnidarian
Science, 1962Chromatophore complexes are described in the siphonophore Nanomia cara . The dispersion and concentration of pigment are related to variation in light intensity and do not appear to be endogenously influenced. The pigment, possibly an ommochrome, has an absorption maximum at 465 to 470 mμ.
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2008
Cnidarians are an ancient group of animals at the base of metazoan evolution. They exhibit a simple body plan with only one well-defined body axis and a small number of cell types. Cnidarians are also well known for their enormous regeneration capacity.
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Cnidarians are an ancient group of animals at the base of metazoan evolution. They exhibit a simple body plan with only one well-defined body axis and a small number of cell types. Cnidarians are also well known for their enormous regeneration capacity.
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Marine Vertebrates, Cnidarians, and Mollusks
2016Jellyfish . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Pharmacology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Pathophysiology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
L. Keith French, B. Zane Horowitz
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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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Cnidarian Origins of the Myxozoa
2015Now that we have strong evidence for the phylogenetic placement of Myxozoa within the Cnidaria it is of great interest to explore their evolutionary history. In particular, what cnidarian features may have facilitated the transition to an endoparasitic lifestyle and can we identify a potential cnidarian sister group?
Beth Okamura +2 more
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Treatment of Atlantic cnidarian envenomations
Toxicon, 2009Envenomation syndromes induced by Atlantic cnidaria have been tabulated and their therapy discussed. The pharmacokinetics of the venom has been emphasized. Pain occurs instantly and reaches a zenith rapidly in the surf. The nematocysts have already penetrated the dermis and disease proceeds before help can arrive.
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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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Venomology of Marine Cnidarians
2020This chapter deals mainly with the marine cnidarian envenomations and their treatment and management. The different aspects relating to envenomations include the components of venom apparatus (nematocysts, spirocysts and ptychocysts); mechanism of cnidae discharge; characteristics and composition of marine cnidarian venoms viz.
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Cnidarians: Diversity and Evolution of Cnidarian Visual Systems
2023Sydney Birch +3 more
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