Results 181 to 190 of about 4,099 (197)
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Mineral Fine Structure of the American Lobster Cuticle
Journal of Shellfish Research, 2012ABSTRACT A major role of lobster integument is protection from microbes. Calcite and amorphous calcium carbonate are the most abundant and most acid vulnerable of the cuticle minerals. We propose that calcite is invested in neutralizing an acidifying environment modulated by the epicuticle. A minor cuticle component is carbonate apatite (CAP), proposed
Joseph G. Kunkel +2 more
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Controlling Growth And Reproduction In The American Lobster
Proceedings of the annual meeting - World Mariculture Society, 1976ABSTRACTSomatic and reproductive growth are antagonistic in the lobster, and it is difficult to manipulate one without affecting the other. High temperature may accelerate ovary maturation but cause ovary reabsorption due to molt cycle acceleration. Sustained high temperature promotes rapid molting but may also interfere with ovary development.
D. E. Aiken, S. L. Waddy
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Diet-dependent cholesterol transport in the American lobster
Journal of Experimental Marine Biology and Ecology, 1985Abstract The absence of dietary phosphatidylcholine (PC) in a purified diet fed to juvenile lobsters Homarus sp. is associated with a significant reduction in serum cholesterol titers throughout most of the molt cycle. The reduction in circulating cholesterol has no apparent effect upon ecdysteroid (molting hormone) titers even during proecdysis when
Louis R. D'Abramo +4 more
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Hemocyanin synthesis in the American lobster, Homarus americanus
Comparative Biochemistry and Physiology Part B: Comparative Biochemistry, 1981Abstract 1. 1. The synthesis of hemocyanin in the American lobster, Homarus americanus, has been investigated. 2. 2. In vitro incorporation of [14C]aspartic acid into proteins by tissue extracts, followed by hemocyanin immunoprecipitation, indicated the hepatopancreas is the site of hemocyanin synthesis. 3. 3.
Edward G. Senkbeil, John C. Wriston
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Further contributions to Mating in the American Lobster
Journal of the Biological Board of Canada, 1936The male in copulation places a 5th pereiopod crosswise of the body in front of the first abdominal appendages as a support for the latter. Mating can occur at least as late as 12 days after the female moults. Only part of the sperm supply is used by the female in fertilizing one batch of eggs.
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