Results 291 to 300 of about 83,182 (308)
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2013
Abstract The echinoid skeleton provides numerous characters that are useful for phylogenetic reconstruction, allowing broad integration of fossil and extant data. During the last 50 years echinoid research has strongly profited from the advent of cladistics, considerably improving our knowledge of the evolution of sea urchins.
Andreas Kroh, Andrew B. Smith
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Abstract The echinoid skeleton provides numerous characters that are useful for phylogenetic reconstruction, allowing broad integration of fossil and extant data. During the last 50 years echinoid research has strongly profited from the advent of cladistics, considerably improving our knowledge of the evolution of sea urchins.
Andreas Kroh, Andrew B. Smith
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2001
Carotenoids are a source of vitamin A and natural colorants of food and feed. Many marine animals are colored. Much of the coloration is because of the presence of carotenoid as well as melanin, porphyrin, ommochrome, quinones, and bile pigments. Carotenoids are widely distributed, naturally occurring pigments, usually red, orange or yellow in color ...
Miyuki Tsushima, T. Matsuno
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Carotenoids are a source of vitamin A and natural colorants of food and feed. Many marine animals are colored. Much of the coloration is because of the presence of carotenoid as well as melanin, porphyrin, ommochrome, quinones, and bile pigments. Carotenoids are widely distributed, naturally occurring pigments, usually red, orange or yellow in color ...
Miyuki Tsushima, T. Matsuno
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2013
Abstract β-Echinenone, isolated as a major carotenoid in the gonads of the edible sea urchins, is oxidatively formed from β-carotene via β-isocryptoxanthin. It affects gonad color, reproduction, development and phagocytosis in the sea urchin. Xanthophylls such as fucoxanthin, lutein and zeaxanthin do not affect gonad color but have significant ...
Rachael C. Symonds, Maeve Kelly
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Abstract β-Echinenone, isolated as a major carotenoid in the gonads of the edible sea urchins, is oxidatively formed from β-carotene via β-isocryptoxanthin. It affects gonad color, reproduction, development and phagocytosis in the sea urchin. Xanthophylls such as fucoxanthin, lutein and zeaxanthin do not affect gonad color but have significant ...
Rachael C. Symonds, Maeve Kelly
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2001
This chapter discusses about Gametogenesis and intra-gonadal nutrient storage and utilization that are linked processes in sea urchins. These processes involve the two cellular populations that make up the germinal epithelium of the sea urchin gonad.
Michael P. Lesser +4 more
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This chapter discusses about Gametogenesis and intra-gonadal nutrient storage and utilization that are linked processes in sea urchins. These processes involve the two cellular populations that make up the germinal epithelium of the sea urchin gonad.
Michael P. Lesser +4 more
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The Complement System in Sea Urchins
2001Comparative immunology had its origin in the studies of inflammation by Elie Metchnikoff who proposed that the primary effectors of the immune response were circulating, amoeboid, phagocytic cells (Metchnikoff, 1891). In order to support this proposal, Metchnikoff reported that the bipinnaria larvae of a sea star would respond to physical injury (the ...
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Sea urchin granuloma: a chronic complication of sea urchin spine injuries
QJM: An International Journal of Medicine, 2023Yuki Muroyama +3 more
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