Amino acid absorption through the gut of the regular echinoid, Echinus esculentus L. by David William James

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Thesis (Ph. D.)--The Queen"s University of Belfast, 1974.

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Amino acid absorption through the gut of the regular Echinoid, Echinus esculentus L. Author: James, D. Awarding Body: Queen's University Belfast Current Institution: Queen's University Belfast Date of Award: Availability of Full Text. ALANINE ABSORPTION IN THE GUT OF ECHINUS ESCULENTUS logarithmic plot of absorption against time (Fig.

2) indicated that the absorption process was first order for at least 40 min. Estimates of the affinity of L-alanine for any mediated transport process (K^) and its maximum velocity of absorption (^max) were therefore subsequently recorded after min Cited by: A second mechanism in the mammal gut which is shared by the basic amino acids (ornithine, arginine and lysine) and cystine has an activity far less obvious than that for the neutral amino acids, its demonstration requiring much lower AMINO ACID AND SUGAR ABSORPTION IN THE GUT OF ECHINUS ESCULENTUS concentrations ( mM).Cited by: The gut microbiome of the sea urchin, Lytechinus variegatus, from its natural habitat demonstrates selective attributes of microbial taxa and predictive metabolic profiles.

However, when the gut flora is suppressed by a mixture of antibiotics, injection of the sea urchins with radioactive glucose results in the labeling of some of the amino acids (nonessential amino Author: Erik Bonsdorff.

The uptake and utilization of dissolved amino acids Bamford, D.R., & J a m e s, D.W., 1 9 7 2. An in vitro study of amino acid and sugar absorption in the gut of Echinus esculentus. Comparative Biochemistry and Physiology, 42A, Cited by: When the tube feet contract, most of the absorbed water is forced through the ampulla walls into the perivisceral cavity, from where it is actively excreted by the gut.

Amino acid absorption through the gut of the regular echinoid in the first 20 % of the intestinal tract and andrespectively, in the. following segments (20 % of gut length). Except for methionine and histidine, essential.

free amino acid concentration decreased significantly along the intestine. The reactions of the sea urchins Echinus acutus and E. esculentus to Laminaria digitata and L. saccharina with or without the encrusting bryozoan Membranipora membranacea were tested in. The concentrations of echinochrome-A in coelomic fluid from healthy specimens of the sea urchin Echinus esculentus (L.) ranged from 3 to 60 #g/ml, with a geometric mean of 14 #g/ml.

Echinochrome-A (50#g/ml) dissolved in sea water, with the aid of mammalian proteins as dispersants, was bactericidal or bacteriostatic towards six out of seven strains of marine gram Cited by: regular echinoid terminology The anatomy and morphology of regular echinoids is strongly influenced by their mode of life (BMNH guide).

Their diet is based around material scavenged / predated off the sediment surface, which calls for powerful. Growth of the European edible sea urchin Echinus esculentus L.

was studied in a population held for 2 yr in cages on the sea bed, after labelling with the skeletal growth marker tetracycline. Overview of Amino Acid Properties.

The figure below Venn diagram grouping amino acids according to their properties. This was adapted from Livingstone & Barton, CABIOS, 9,(), and is just one of many classifications that are possible, but is probably that which most people would agree covers the most protein contexts.

(Now clickable!). The acid-base status of two sea urchins, Psammechinus miliaris (Gmelin) and Echinus esculentus (L.) during experimental emersion has been investigated.

Sea urchins were collected from the Firth of Clyde between August and September The carbon dioxide capacity of the coelomic fluid of P. miliaris was greater than that of E. esculentus, although Cited by: Estimated total amino acid absorbed by carrier- mediated and passive uptake integrated over the total gut length Substrate Tissue Sediment Gut fluid concentration Total composition food (;"-M) absorbed1' (mole%)' composition (mole%)'' Foregut Midgut Hindgut D-glucose - - 70 L-aspartic acid 10 11 10 11 5 L-glutamic acid 14 16 26 19 13 L-methionine l Cited by: Because chlorophyll is green, all photosynthetic autotrophs are this color.

Autotrophs have no need of respiration since they obtain energy from nonliving sources. Primary production is the net gain in organic matter remaining after autotrophs have been consumed by heterotrophs.

Echinoderm Nutrition. Michel Jangoux, John M. Lawrence. CRC Press, Jun 1, - Science - pages. 0 Reviews. The purpose of this book is to present the state of knowledge concerning nutrition and point out directions for future work for the Echinodermata, an ancient group which shows great diversity in form and function, and whose feeding.

The ultrastructure of the gills of Echinus esculentus is described using transmission electron microscopy. The gills are covered by typical epithelial cells overlying a collagenous basement membrane. The coelomic lumen of the gills is thrown into a series of irregular grooves and ridges which are formed by long narrow cells from each of which Cited by: The ambulacral system of echinoids has a distinct constructional plan allowing only certain modifications.

Nevertheless, tube feet of extant echinoids exhibit a great variety of structures and functions. They are involved in locomotion, adhesion, absorption, gaseous exchange, excretion, burial, feeding and chemosensory Size: 3MB. Utilization of marine plants and their constituents by bacteria isolated from the guts of echinoids was investigated to determine the Bacteria from the guts of the regular echinoids Lytechinus variegatus Mixed and some isolated bacteria from the gut of L.

variegatus could utilize xylose, rhamnose, glucose, galactose, laminarin Cited by:   The phylum Echinodermata has many interesting aspects in its biology. This phylum is entirely marine. The biodiversity is very rich in the class Echinoidea which has five extant orders and six extinct orders.

The echinoderms are sexually reproductive and egg laying where they are born into a larval form. Each of the five compass ossicles on the aboral side of the lantern of regular echinoids is linked to an underlying rotular ossicle by a compass-rotular ligament (CRL).

The structure and anatomical relations of the CRL of Echinus esculentus L. were examined by light microscopy and scanning and transmission electron microscopy, and its Cited by: 3. The layout of the large neurones in each segmental ganglia is similar whatever the position of the ganglia within the radial nerve cords.

Longitudinally running large neurones pass through at least 4 or 5 segments and show a fine plexus of varicose terminals at each by: The intestine is not only critical for the absorption of nutrients, but also interacts with a complex external milieu.

Most foreign antigens enter the body through the digestive tract. Dietary amino acids are major fuels for the small intestinal mucosa, as well as important substrates for syntheses of intestinal proteins, nitric oxide, polyamines, and other products with enormous Cited by: Protein digestion and amino acid absorption along the intestine of the common carp (Cyprinus carpio L.), a stomachless fish: an in vivo study.

Dabrowski K. Protein hydrolysis to peptides and free amino acids and the apparent absorption of amino acids (AAaa) were evaluated in different segments of carp by: Amino acid scoring predicts the degree of efficiency that a sourced protein will meet the amino acid needs of a person or group.

The amino acid scoring table (Table 3) shows that in the yellow tiger nut milk, the first limiting amino acid is Leucine with value offollowed by Isoleucine as the second limiting amino acid with   The complete amino acid sequence of echinoidin, the proposed name for a lectin from the coelomic fluid of the sea urchin Anthocidaris crassispina, has been determined by sequencing the peptides obtained from tryptic, Staphylococcus aureus V8 protease, chymotryptic, and thermolysin digestions.

Echinoidin is a multimeric protein (Giga, Y., Sutoh Cited by: Macrowikinomics: Rethinking Education Lecture by Don Tapscott Aarstidernes Madbio PSYC - Statistics for Psychology Genresjov med Vejloe og venner Natural Ones Podcast Leading Through Reading I love Jazz.

Protein content, amino acid composition and nitrogen-to-protein conversion factors of Ulva rigida and Ulva capensis from natural populations and Ulva lactuca from an aquaculture system, in South Africa. Re-evaluation of the gut-fullness (gut fluorescence) method for inferring ingestion rates of suspension-feeding copepods.

().Author: Mark Digby Cyrus. Other articles where Echinoid is discussed: echinoderm: Annotated classification: Class Echinoidea (sea urchins, heart urchins, sand dollars) Fossil and living forms (Ordovicianyears ago to Recent); globular, discoid, or oval in shape, with complete skeleton (test) of interlocking plates bearing movable spines and pedicellariae; mouth directed.

The oldest echinoids, belonging to an extinct regular taxon called the Echinocystitoidea, appear in the fossil record in the late Ordovician. Cidaroids or pencil urchins appear in the Mississippian (Early Carboniferous) and were the only echinoids to survive the mass extinction at the Permo-Triassic boundary.

The water-vascular system of echinoids opens to the outside through many pores in one aboral ossicle that serves as a _____, Madreporite Echinoids move by using ______ for pushing against the substrate and ______ for pulling.

Fossil Spatangoid Echinoids of Cuba Porter M. Kier Introduction An extraordinary total of fossil echinoids have been described from Cuba. Most of the species are Eocene to Miocene, with Eocene, Oligocene, and 33 Miocene species.

None has been reported from the Pliocene, but 10 are pre­ sent in the Pleistocene. Twenty-two have been. Effect of amino acids on isolated colonic smooth muscle from the rabbit. Snape WJ Jr, Yoo S. The purpose of these studies was to evaluate the direct effect of amino acids on rabbit colonic smooth muscle.

Isometric tension was measured in circular smooth muscle from the distal colon after the administration of 19 individual L-amino by:   Crystalline amino acids are manufactured by bacteria through fermentation processes.

When used in diets, crystalline amino acids are digested %, thus decreasing overall nitrogen excretion and in turn reducing ammonia emission into the air. Previous studies have shown that the level of inclusion of these amino acids is limited to diets with.

Start studying Biology- Echinoderms. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Citrulline (Cit, C6H13N3O3), which is a ubiquitous amino acid in mammals, is strongly related to arginine.

Citrulline metabolism in mammals is divided into two fields: free citrulline and citrullinated proteins.

Free citrulline metabolism involves three key enzymes: NO synthase (NOS) and ornithine carbamoyltransferase (OCT) which produce citrulline, and. Start studying Marine Biology 2. Learn vocabulary, terms, and more with flashcards, games, and other study tools.

Search. specify the order of amino acids in one protein. In photosynthesis, in museum's catalog of specimens, a biologist reads "Echinoidea: Echinidae: Echinus esculentus". She can assume from the label that. The most common amino acid in these alpine soils was glycine. In a subalpine fen habitat, aspartate was the most commonly observed amino acid, and total amino acid concentrations were 15–20mmol/L.

In a shortgrass steppe habitat, glutamate was the most abundant amino acid, and total amino acid concentrations were 25–45mmol/L. The SALMFamides are the first neuropeptides to be fully characterized and sequenced from any echinoderm.

These peptides have been isolated from the RNC of A. rubens and A. forbesii; S1 is an octapeptide with the amino acid sequence GFNSALMFamide and $2 is a dodecapeptide with the sequence SGPYSFNSGLTFamide (Elphick et al.

a,b). How prey size, type and abundance a¡ects foraging decisions by the regular echinoid Psammechinus miliaris Maria del Mar Otero-Villanueva*P, Maeve S. Kelly* and Gavin BurnellO *Scottish Association for Marine Science, Oban, Argyll, Scotland, PAQA, by: Essential amino acid provisioning by these gut microbes have been proposed, but remain to be empirically determined.

In this study, we sought to determine gut microbial EAA provisioning to termite hosts by taking advantage of the natural variations in the δ 13 C EAA stable isotope signatures between plants, bacteria, and by: Published for the American Society of Biological Chemists.

June Nov. published by the Rockefeller Institute fo.

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