Results 241 to 250 of about 6,784 (290)

Studies on Strobilation in the Scyphozoa

Journal of Biological Education, 1967
(1967). Studies on Strobilation in the Scyphozoa. Journal of Biological Education: Vol. 1, No. 1, pp. 79-81.
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Heat shock proteins in Aurelia (cnidaria, scyphozoa)

Journal of Experimental Zoology, 1984
AbstractHeat shock proteins (hsp) in Aurelia identified by one‐dimensional SDS‐PAGE are of sizes 93,83,70,68,45, and 39 kD, the most rapidly labeled being hsp 70 in all developmental stages. Labeled hsp in the polyp are found mostly in the epidermis; gastrodermal nuclei are also labeled.
Robert E. Black, Laird Bloom
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Bioluminescence of deep-sea coronate medusae (Cnidaria: Scyphozoa)

Marine Biology, 2004
Bioluminescence is the production of visible light by a living organism. The light commonly appears as flashes from point sources (involving one or more cells, usually described as photocytes) or as a glandular secretion. A visible flash usually involves synchronous light emission from a group of cells or, if from a single-celled organism such as a ...
Herring, P.J., Widder, E.A.
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Ionic Currents of the Scyphozoa

1989
Scyphozoans are members of the phylum Cnidaria and, according to Werner (1973), are the second most primitive extant class of this, the most primitive group of animals to possess a recognizable nervous system. Their nervous systems are, for the most part, composed almost entirely of diffuse two-dimensional plexuses of neurons, nerve nets (Passano, 1982)
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Dissociation and reaggregation of cells of Chrysaora quinquecirrha (cnidaria, scyphozoa)

Journal of Experimental Zoology, 1985
AbstractCells of scyphistomae, strobilae, and ephyrae were dissociated with trypsin and reaggregated. Clumping was inhibited in low Ca+ + and by puromycin, but not by collagenase or sugars. Reaggregates from the oral end of the polyp developed tentacles and mouths first and basal structures later, whereas the opposite sequence occurred with cells from ...
Gayle K. Riley, Robert E. Black
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Comments on the Laboratory Culture of Scyphozoa

1975
The culture of a number of major invertebrate types of animals has been accorded increasing attention in recent years. However, the culture of scyphozoans has received very little attention until recent years. The group, as a whole, is of little commercial value.
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Ultrastructure of the mesoglea in strobilae of Chrysaora quinquecirrha (scyphozoa)

Journal of Experimental Zoology, 1974
AbstractLarge numbers of mesogleal fibers are found in constricted regions of Chrysaora strobilae. The mesoglea in these regions appears to be branched. Many fibers are oriented normal to the surfaces of gastrodermal cells. The mesoglea of non‐constricting regions contains similar fibers, most of which are not so oriented.
Robert E. Black, Mary A. Bynum
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Cnidaria: Scyphozoa and Non-Colonial Hydrozoa

2017
This chapter describes the taxonomy of scyphozoa and non-colonial hydrozoa. The Phylum Cnidaria assembles highly diverse primitive invertebrates that carry stinging cells called cnida. The presence of cnida, which are organized in specialized structures called cnidocysts (or nematocysts), makes the organisms of this group venomous to varying degrees ...
Priscilla Licandro, Astrid Fischer, Dhugal J. Lindsay   +2 more
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Musculature development in planuloids of Cassiopeia xamachana (Cnidaria: Scyphozoa)

Zoomorphology, 2019
Polyps of the family Cassiopeidae (Cnidaria: Scyphozoa) can reproduce asexually by forming a ciliated swimming stage, the planuloid. It is externally similar to the planula larva and has traditionally been referred to as the planuloid bud. Using phalloidin labeling, we described the development of the muscular system in planuloids of Cassiopeia ...
Valeriia Khabibulina, Viktor V. Starunov, Viktor V. Starunov   +2 more
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Metabolism of 131I in relation to strobilation of Chrysaora quinquecirrha (Scyphozoa)

Comparative Biochemistry and Physiology Part A: Physiology, 1973
Abstract 1. 1. Iodide greatly stimulates strobilation of Chrysaora polyps. 2. 2. Early strobilae accumulate free iodide against a concentration gradient to a much greater extent than nonstrobilating polyps or ephyrae. 3. 3.
R.E. Black, K.L. Webb
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