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Lytechinus Stock Photos and Images
RMBH50RR–Green sea urchin (Lytechinus semituberculatus) shell on rock at Punta Cormoran, Floreana Island.
RFEWKGPD–Underwater marine life, closeup of a green sea urchin, Lytechinus variegatus, Caribbean sea
RMC6FK84–Sea Urchin, Lytechinus variegatus, with debris attached to it. Photographed in the Lake Worth Lagoon, Singer Island, Florida
RMB8A6GH–Green sea urchin, Lytechinus semituberculatus, shell on rock at Punta Cormoran, Floreana Island, Galapagos Islands, Ecuador in September
RMDC8RWK–Ecuador, Galapagos, Floreana, Punta Cormoran. Green sea urchin (endemic, Lytechinus semituberculatus) in hand.
RFE6CBMJ–Little deer cowrie (Cypraea cervinetta) on Green Sea Urchin (Lytechinus semituberculatus) close-up, Galapagos Islands, Ecuador
RF2FJWJY5–Sea Urchins on land, phylum Echinodermata, Pencil-spined, Eucidaris thousarsii, Green sea urchin, Lytechinus semituberculatus, marine animals, South A
RM2HN8G53–A close look at the spines and tube feet of the variegated urchin, Lytechinus variegatus, also referred to as the green sea urchin, although the color
RM2JJRX7G–Sea urchin (Lytechinus sp,), toxic sea urchin (Toxopneustidae), Cayo Levisa, Cuba, Caribbean
RMW0RMG3–Sea Urchin shells inside a fishing net on St Monans Harbour, St Monans, East Neuk, Fife, Scotland.
RF2TD1C46–Variegated sea urchin (Lytechinus variegatus) is a sea urchin native to worms waters of western Atlantic Ocean. This photo was taken in Paraty coast,
RFMNJBK5–purple sea urchin, Strongylocentrotus purpuratus, with test as protection and white sea urchin Lytechinus anamesus, Anacapa Island, Channel Islands, C
RMCWC6TY–Ecuador, Galapagos, Floreana, Punta Cormoran. Group of sea shells including Green sea urchin.
RMBRD14C–Green Sea Urchins (Lytechinus semituberculatus) on rock, underwater view, Isla San Cristobal, Ecuador, Galapagos Archipelago,
RFFB24E8–A variegated sea urchin or green sea urchin, Lytechinus variegatus, on the seabed in the Caribbean sea, Panama, Central America
RMADFJ7H–Green Sea Urchin (Lytechinus semituberculatus) washed out on sandy beach, Punta Cormoran, Floreana, Galapagos Islands, Ecuador
RMC6FK72–Sea Urchin, Lytechinus variegatus, with debris and garbage attached to it. Photographed in the Lake Worth Lagoon, Singer Island,
RMBMR72R–Sea Urchin (Lytechinus variegatus) with shells, beer bottle cap and newspaper attached to it.
RF2AYTJFF–Shell of a green sea urchin resting in fine pebble sand on a beach in the Galapagos Islands
RMA00EY2–Green sea urchin Lytechinus semituberculatus stranded on the beach Floreana Charles Island Galapagos
RF2TD1C44–Variegated sea urchin (Lytechinus variegatus) is a sea urchin native to worms waters of western Atlantic Ocean. This photo was taken in Paraty coast,
RMB1RA47–Boy holding a live variegated urchin Lytechinus variegatus on a beach Sanibel Island Florida Gulf Coast
RMCWC6Y1–Ecuador, Galapagos, Floreana, Punta Cormoran. Group of sea shells including Green sea urchin.
RFEXYR3N–Live specimen of Variegated sea urchin or green sea urchin, Lytechinus variegatus, underwater in the Caribbean sea, Panama
RMADFJ4P–Green Sea Urchin (Lytechinus semituberculatus) washed out on sandy beach, Punta Cormoran, Floreana, Galapagos Islands, Ecuador
RMDC8T33–Ecuador, Galapagos, Floreana, Punta Cormoran. Group of sea shells, urchins and sand dollar.
RMCWC6RK–Ecuador, Galapagos, Floreana, Punta Cormoran. Group of sea shells including Green sea urchin.
RM2AWRA0C–Smithsonian miscellaneous collections . 1-5, Arbacia crenulata Kier, New Species; 6, Arbacia improcera (Conrad) (see explanation of plates at end of text.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 145. NO. 5, PLATE 2. 1-2, LYTECHINUS VARIEGATUS PLURITUBERCULATUS KlER, NEW SUBSPECIES;3, LYTECHINUS VARIEGATUS VARIEGATUS (LESKE) (SEE EXPLANATION OF PLATES AT END OF TEXT.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 145. NO. 5. PLATE 3
RFEWKGNK–Underwater marine life, Lytechinus variegatus commonly called green sea urchin or variegated sea urchin, Caribbean sea
RMDC8T24–Ecuador, Galapagos, Floreana, Punta Cormoran. Group of sea shells, urchins and sand dollar.
RMCWC6WM–Ecuador, Galapagos, Floreana, Punta Cormoran. Group of sea shells including Green sea urchin.
RM2AWRTY0–Smithsonian miscellaneous collections . rom the Tamiami andCaloosahatchee, is similar in all respects to Lytechinus variegatusvariegatus except for the number of tubercles in the ambulacra.Rhyncholampas ayresi from the Caloosahatchee is similar to Rhyn-cholampas evergladensis from the Tamiami and probably is descendedfrom it. ECOLOGY Echinoids of both the Tamiami and Caloosahatchee formationsevidently lived in shallow water. Five out of the seven species foundin the Caloosahatchee formation are still living: Lytechinus varie-gatus, Echinometra lucunter, Clypeaster rosaceus, Clypeaster subde-pr
RFDG8B6X–underwater close up shot of the sea urchin Lytechinus variegatus at Ilhabela, Sao Paulo state shore, Brazil
RM2AWR8FM–Smithsonian miscellaneous collections . 1, Lytechinus variegatus plurituberculatus Kier, New Species;2, echinometra lucunter (linnaeus); 3, clypeaster sunn i lan dens is KlER, NEW SPECIES (SEE EXPLANATION OF PLATES AT END OF TEXT.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 145, NO. 5, PLATE 4. 1-3. ECHINOMETRA LUCUNTER (LINNAEUS); 4, LYTECH1NUS VARIEGATUSPUURITUBERCULATUS KlER, NEW SUBSPECIES (SEE EXPLANATION OF PLATES AT END OF TEXT.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 145. NO. 5. PLATE 5
RFDG5NW8–underwater close up shot of the sea urchin Lytechinus variegatus at Ilhabela, Sao Paulo state shore, Brazil
RM2AWR9EH–Smithsonian miscellaneous collections . 1-2, LYTECHINUS VARIEGATUS PLURITUBERCULATUS KlER, NEW SUBSPECIES;3, LYTECHINUS VARIEGATUS VARIEGATUS (LESKE) (SEE EXPLANATION OF PLATES AT END OF TEXT.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 145. NO. 5. PLATE 3. 1, Lytechinus variegatus plurituberculatus Kier, New Species;2, echinometra lucunter (linnaeus); 3, clypeaster sunn i lan dens is KlER, NEW SPECIES (SEE EXPLANATION OF PLATES AT END OF TEXT.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 145, NO. 5, PLATE 4
RFDG8BXH–underwater close up shot of the sea urchin Lytechinus variegatus at Ilhabela, Sao Paulo state shore, Brazil
RM2AWRP8F–Smithsonian miscellaneous collections . Fig. 8.—Lytechinus variegatus plurituberciilatus Kier, new subspecies: Apicalsystem of U.S.N.M. 648150, from the Caloosahatchee formation, loc. 6, X 4.Genital 2 absent on specimen. plates in each series; two regular series of secondary tubercles par-allel to primary series in each ambulacrum; this series extendingfrom midway between apical system and margin to near peristome,in specimen 54 mm long from 25 to 31 secondary tubercles in eacharea. Inter ambulacra.—Secondary tubercles well developed (text fig. 9),of approximately same size as primary; at marg
RFDG5P34–underwater close up shot of the sea urchin Lytechinus variegatus at Ilhabela, Sao Paulo state shore, Brazil
RM2AWRPJC–Smithsonian miscellaneous collections . m deposits in SouthCarolina which he considers to be Pleistocene. Ty/>e.—Figured specimen, U.S.N.M. 648151. LYTECHINUS VARIEGATUS PLURITUBERCULATUS Kier, new subspeciesPlate 2, figures 1, 2; Plate 3, figure 1; Plate 4, figure 4; text figures 8-11 Diagnosis.—Distinguished from nominate subspecies by more nu-merous tubercles in ambulacra. Material.—Two specimens from the Tamiami formation; 13 fromthe Caloosahatchee. Shape.—Size moderate, varying from 48 to 56 mm in horizontaldiameter, height varying from 55 to 60 percent (average 57) ofthe diameter; mar
RFDFYK36–underwater close up shot of the sea urchin Lytechinus variegatus at Ilhabela, Sao Paulo state shore, Brazil
RMRFPH50–. Carnegie Institution of Washington publication. ^ 126 Papers from the Marine Biological Laboratory at Tortugas. The first of these methods was tried at the Tortugas laboratory on the eggs of the sea-urchin Lytechinus {Toxopneustes) variegatus. Advantage was taken of the fact that the electrolytes of the eggs and the medium dissociate into ions which bear electric charges, and therefore their move- ment through the eggs could be detected, with a high degree of accuracy, by the electric conductivity method of Kohlrausch.^ Several bushels of sea-urchins were collected each day and the eggs of t
RFDFYK4R–underwater close up shot of the sea urchin Lytechinus variegatus at Ilhabela, Sao Paulo state shore, Brazil
RMRFRH7K–. Carnegie Institution of Washington publication. 28 Hyhridizuiivn of Echinoids. The evidence here confirms my conclusions reached in 1912, namely, that in Lytechinus (Toxopneustes) the fertilized eggs contained either 3 V's or 4 V's, and that this variation in number was due to the fact that the sperms were dimorphic with respect to these chromosomes, carrying either 1 or 2 V's into the egg. Figs. 12 to 15 are of anaphase plates from Cidans eggs activated with Lytechinus sperm. They were dra^Ti and enlarged in the manner described for figures 6 to 11. They have been reduced one-half in reprod
RFDG88KX–underwater close up shot of the sea urchin Lytechinus variegatus at Ilhabela, Sao Paulo state shore, Brazil
![. The Biological bulletin. Biology; Zoology; Marine biology. 214 ALBERT TYLER, BETTY S. TYLER AND JORAM PIATIGORSKY. CUMULATIVE VOLUME (ml) CUMULATIVE VOLUME (ml) Figure 2. Sucrose density gradient centrifugation of homogenates of unfertilized and fertilized (1 hour) eggs of Lytechinus pictus following incorporation of C"-amino acids. The two sets of graphs (upper and lower) are for two separate experiments, in which unfertilized and fertilized eggs were processed at the same time. The eggs, in 2 ml. of a 10% suspension, were exposed for 20 minutes to a "non-competing" (cf. Tyle Stock Photo](https://c8.alamy.com/comp/RHM3JM/the-biological-bulletin-biology-zoology-marine-biology-214-albert-tyler-betty-s-tyler-and-joram-piatigorsky-cumulative-volume-ml-cumulative-volume-ml-figure-2-sucrose-density-gradient-centrifugation-of-homogenates-of-unfertilized-and-fertilized-1-hour-eggs-of-lytechinus-pictus-following-incorporation-of-cquot-amino-acids-the-two-sets-of-graphs-upper-and-lower-are-for-two-separate-experiments-in-which-unfertilized-and-fertilized-eggs-were-processed-at-the-same-time-the-eggs-in-2-ml-of-a-10-suspension-were-exposed-for-20-minutes-to-a-quotnon-competingquot-cf-tyle-RHM3JM.jpg ". The Biological bulletin. Biology; Zoology; Marine biology. 214 ALBERT TYLER, BETTY S. TYLER AND JORAM PIATIGORSKY. CUMULATIVE VOLUME (ml) CUMULATIVE VOLUME (ml) Figure 2. Sucrose density gradient centrifugation of homogenates of unfertilized and fertilized (1 hour) eggs of Lytechinus pictus following incorporation of C"-amino acids. The two sets of graphs (upper and lower) are for two separate experiments, in which unfertilized and fertilized eggs were processed at the same time. The eggs, in 2 ml. of a 10% suspension, were exposed for 20 minutes to a "non-competing" (cf. Tyle Stock Photo")
RMRHM3JM–. The Biological bulletin. Biology; Zoology; Marine biology. 214 ALBERT TYLER, BETTY S. TYLER AND JORAM PIATIGORSKY. CUMULATIVE VOLUME (ml) CUMULATIVE VOLUME (ml) Figure 2. Sucrose density gradient centrifugation of homogenates of unfertilized and fertilized (1 hour) eggs of Lytechinus pictus following incorporation of C"-amino acids. The two sets of graphs (upper and lower) are for two separate experiments, in which unfertilized and fertilized eggs were processed at the same time. The eggs, in 2 ml. of a 10% suspension, were exposed for 20 minutes to a "non-competing" (cf. Tyle
RFDG888A–underwater close up shot of the sea urchin Lytechinus variegatus at Ilhabela, Sao Paulo state shore, Brazil
RMRHN3RR–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 64 W. R. ECKBERG AND M. E. PEROTTI. I 10 Micromolar Quercetin 100 FIGURE 1. Effect of quercetin on fertilization of Lytechinus pictus eggs. Eggs were mixed with various concentrations of quercetin in ASW and inseminated five min later. Eggs were examined by phase-contrast microscopy and scored as fertilized if they showed elevated fertilization envelopes, post- fertilization nuclear changes and cleavage. quickly. Quercetin significantly inhibited fertilization in Strongylocentrotus at 14°C when added as late as 20 s after in
RFDFFETM–underwater close up shot of the sea urchin Lytechinus variegatus at Ilhabela, Sao Paulo state shore, Brazil
RMRHN3P3–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. QUERCETIN AND FERTILIZATION 69. FIGURE 11. Lytechinus pictus egg which was exposed to 4^g/ml ionophore A23187. The egg had been treated with 30 nM quercetin for 5 min, inseminated in quercetin and treated with ionophore 5 min later. A fertilization envelope (FE) has formed and sperm have detached. FIGURE 12. Surface of an ionophore-activated, quercetin-treated egg of Lytechinus pictus. Note the presence of a fertilization envelope (FE) and forming hyaline layer (HL) and the absence of cortical granules. Bar = 1.0 1977), and
RMRHM57E–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 276 H. SCHUEL. Figure 2. Fertilization reaction of Lytechinus pictus eggs upon insemination with excess sperm. From Vacquier and Payne (1973), reprinted with permission of Academic Press, Inc. A: Egg fixed at 10 s after insemination showing numerous sperm bound to the entire surface of the egg. B: Egg fixed at 25 s. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the origina
RMRHME90–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CELL DIVISION, CELL MOTILITV. AND DEVELOPMENT 241. Figure 1. Sequential computed images of a compressed Lytechinus variegatus :vgote at S-, 16-. and 32-cell stages. All spindles in side view, regardless of orientation, show up as while areas of/ugh birefringence. The metaphasc plate coincides with the plane of cytokinesis. These images were generated using Oldenbourg's newpol-scope (5). Four images were taken at different compensator angles: from ihese a computed image with a pixel brightness proportional to the sample biref
RMRFRH7B–. Carnegie Institution of Washington publication. . /',; I. 12 1/ ''' i/y f III / 13 KiG. 12, a and b, (Jidaris 9 X Lytechinus cT. Fig. 13, a and 6, Cidaris 9 X Lylechinus d'â 28?-26?. Two heterochromosomes, 33-35. Three heterochromosomes. Much lagging; The fact that two heterotypic chromosomes in figure 156 lie among the lagging chromosomes, and the knowledge that two of these elements were brought into the egg by the Lytechinus sperm, make it seem probable that the lagging chromosomes are those of Lytechinus. The same type of evidence is given by the sections of the egg of which figure 17 is
RMRHM56Y–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 280 H. SCHUEL + 50,. -75 I sec Figures 3-6. Electrical recordings of fertilization potentials in Lytechinus variegatus eggs. Abscissa: time (see scales); ordinate: {upper) current in pA; (lower) membrane potential in mV. Vertical arrow: start of depolarization in inseminated egg; horizontal bracket: interval during which fertilization membrane (FM) elevation occurred. Temp. = 22°C. From Chambers and DeArmendi (1979), reprinted with permission of Academic Press, Inc. Figure 3. Action potential and fertilization potential reco
RMRHNRP0–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 232 JORAM PIATIGORSKY AND ALBERT TYLER method of Martin and Ames (1961) and these values are in close agreement with those of Slater and Spiegelman (1966a). RESULTS 1 ) Retention oj radioactivity b Lytechinus pictus after receiving an injection j H3-uridine To test the retention of radioactively labeled uridine injected into the hody cavity of the adult female, the following experiment was performed. Two sea. 2 3 4 5 6 7 14 DAYS AFTER H3-5-URIDINE INJECTION 21 28 FIGURE 1. Retention of radioactivity by Lytechinus pictus aft
RMRHKTP5–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FIGX-RE 3. Stages in. the metamorphosis of Lytechinus pictns larvae; (a) 1 minute after adding to the appropriate substrate, (b) 6 minutes, (c) 9 minutes, (d) 11 minutes, side view showing relation of larval structures to the emerging urchin, (e) 12 minutes, (f) 15 minutes, (g) 37 minutes, larval spines are visible in upper right, (h) 80 minutes, (i) 27 hours. All pictures are at the same magnification.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability
RMRHMEDJ–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. CELL DIVISION. CELL MOTILITY, AND DEVELOPMENT 233. Figure 1. Swimming pluteus larva of Lytechinus variegatus (sea urchin). The stereo pair is arranged for cross-eved viewing. Each view wax computed from a stack ofca. 100 optical sections which were acquired in DIC microscopy at 30 sections/s, then digitally processed to remove out-of-focus hu:c digital contrast enhancement (3). We also described a method for very rapidly obtaining serial optical sections, repeatedly in time lapse, using video microscopy combined with synchro
RMRJWY6J–. Atoll research bulletin. Coral reefs and islands; Marine biology; Marine sciences. Figure 4. Underwater views of habitats of Batfish Point-'Cuda Cut: a, diver pushing plankton net along peat-bank undercut; b, peat bank shoulder covered by Halimeda algae, with sea urchin (Lytechinus) in foreground (photo, C. Clark); c, peat bank wall with Halimeda and sea anemone, Condylactis; d, starfish Oreaster at base of peat bank; e, mangrove (Rhizophora) root covered by filamentous cyanobacteria (Lyngbya);/, detached cyanobacteria forming floats, lifted to the surface by trapped photosynthetic air bubbl
RMRHG7MA–. Biological impact of a large-scale desalination plant at Key West. Copper -- Toxicology; Thermal pollution of rivers, lakes, etc. -- Florida Key West; Marine pollution -- Florida Key West. P-ll . 0 ECHINOIDS PER M^ 0 (O.Oit DIADEMA PER M^) FIG. 35 NUMBERS OF LYTECHINUS VARIEGAWS AND TRIPNEUSTES VENTRICOSUS PER SQUARE METER IN TURTLE GRASS FLATS EAST AND WEST OF THE SAFE HARBOR TURNING BASIN 99. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resembl
RMRHN83G–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. MERCAPTOETHANOL INDUCED DELAY 341 containing either ME or puromycin. After 5 minutes, 1 /zc/ml 3H-leucine (5.0 c/mmole, New England Nuclear) was added. The reaction was terminated by adding an equal volume of 0r/c trichloroacetic acid (TCA) and the samples 70 50 (D C £ 30 10. 10 30 50 TAI in minutes FIGURE 1. Delay-ME exposure diagram of Lytechinus eggs. Eggs were fertilized, and treated by ME for 15 minutes, initiated at different times after insemination. Lengths of each vertical line indicate the first cleavage period of
RMRHM93A–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. Figure 2. The effect of the antibody, Ku 162, with or without the simultaneous injection of the DNA-PK holoenzyme, on the ability of the injected cell in a 2-cell embryo of Lytechinus pictiis. Injected cells are identified with an arrow. (A) A diagram of the experimental protocol. (B) The injection of the Ku 162 antibody (2.5 pg/cell) into one cell of a 2-cell embryo caused complete arrest of cell division in the injected cell, but not in the non-injected cell. (C) Two cells, one in each of a 2-cell stage embryo, microinject
![. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. -2-1 01 2 Time of Quercetin Addition FIGURE 2. Effect on time of quercetin addition relative to time of insemination on egg activation in Strongylocentrotus purpuratus. Sperm were added at "0" and quercetin (100 pM) was added at the times indicated relative to sperm addition. Times are given in minutes. Fertilization was determined microscopically as described in the legend to Figure 1. X LU Q > 2 -. 01 3 5 MINUTES FIGURE 3. Effect of quercetin on the decay of motility by Lytechinus pictus sperm. Sperm were incu Stock Photo](https://c8.alamy.com/comp/RHN3R4/the-biological-bulletin-biology-zoology-biology-marine-biology-2-1-01-2-time-of-quercetin-addition-figure-2-effect-on-time-of-quercetin-addition-relative-to-time-of-insemination-on-egg-activation-in-strongylocentrotus-purpuratus-sperm-were-added-at-quot0quot-and-quercetin-100-pm-was-added-at-the-times-indicated-relative-to-sperm-addition-times-are-given-in-minutes-fertilization-was-determined-microscopically-as-described-in-the-legend-to-figure-1-x-lu-q-gt-2-01-3-5-minutes-figure-3-effect-of-quercetin-on-the-decay-of-motility-by-lytechinus-pictus-sperm-sperm-were-incu-RHN3R4.jpg ". The Biological bulletin. Biology; Zoology; Biology; Marine Biology. -2-1 01 2 Time of Quercetin Addition FIGURE 2. Effect on time of quercetin addition relative to time of insemination on egg activation in Strongylocentrotus purpuratus. Sperm were added at "0" and quercetin (100 pM) was added at the times indicated relative to sperm addition. Times are given in minutes. Fertilization was determined microscopically as described in the legend to Figure 1. X LU Q > 2 -. 01 3 5 MINUTES FIGURE 3. Effect of quercetin on the decay of motility by Lytechinus pictus sperm. Sperm were incu Stock Photo")
RMRHN3R4–. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. -2-1 01 2 Time of Quercetin Addition FIGURE 2. Effect on time of quercetin addition relative to time of insemination on egg activation in Strongylocentrotus purpuratus. Sperm were added at "0" and quercetin (100 pM) was added at the times indicated relative to sperm addition. Times are given in minutes. Fertilization was determined microscopically as described in the legend to Figure 1. X LU Q > 2 -. 01 3 5 MINUTES FIGURE 3. Effect of quercetin on the decay of motility by Lytechinus pictus sperm. Sperm were incu
Search Results for Lytechinus Stock Photos and Images (113)
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