Results 71 to 80 of about 6,145 (182)
Sea urchins, ecologically important marine species, host a complex gut microbiota that plays a significant role in their digestion, nutrient acquisition, and overall health. The gut microbes, along with endogenous enzymes, facilitate the breakdown of macroalgae and other food sources.
Yining Zheng +11 more
wiley +1 more source
Diadema Gray, 1825 Gray 1825 p. 246 Type species: Echinometra setosa Leske, 1778, by ruling of the ICZN, 1954. Assigned species: D. setosum (Leske, 1778); D. savignyi, Michelin 1845; D. paucispinum A. Agassiz, 1863; D.
Rodríguez, Adriana +2 more
core +1 more source
NAPHTHAQUINONE PIGMENT IN THE TROPICAL SEA URCHIN DIADEMA ANTILLARUM PHILIPPI [PDF]
Summary.Pigment with the characteristics of a naphthaquinone is widely distributed throughout the body of the echinoid Diadema antillarum. Chromatography indicates that there is a main reddish orange pigment sometimes accompanied by small amounts of a purple pigment.The purified main pigment crystallises in red needles which melt at 223°C, sublime ...
openaire +1 more source
Diadema antillarum populations at many Caribbean locations have failed to recover from the pathogen-induced mortality events of the 1980s. It has become clear that the massive decline of this herbivorous urchin and the wide-spread absence of a population
S. C. C Steiner, S. M Williams
doaj
NITROGENOUS EXCRETION IN THE TROPICAL SEA URCHIN DIADEMA ANTILLARUM PHILIPPI
Diadema antillarum is ammonotelic in its excretion of nitrogenous waste products. It excretes approximately 60% of its total nonprotein nitrogen as ammonia and approximately 30% as amino acids. No urea, uric acid or other purine bases were found to be excreted.
openaire +4 more sources
Food supply influences survival of Diadema antillarum larvae
Caribbean coral reefs have become increasingly degraded in recent decades, in part due to the loss of a keystone invertebrate herbivore, the sea urchin Diadema antillarum. Most D.
Bayrami, Sona, Kobelt, Julia
core +1 more source
Diadema antillarum Surrounded by Seagrass
A view of several Diadema antillarum (long-spined sea urchins) nestled among dense seagrass.https://digitalcommons.usf.edu/ogden2_images/1052/thumbnail ...
Ogden, John C.
core
Dataset: Densities of small corals in Diadema halos and temporal stability of D. antillarum clustersDensities of small corals in Diadema halos and temporal stability of Diadema antillarum clusters.
Edmunds, Peter J., Stockton, Lindsey
core +1 more source
Use of Diadema antillarum Spines by Juvenile Fish and Mysid Shrimp
The long-spined sea urchin (Diadema antillarum Phillipi) is an important element in the structure and function of coral reef communities. Regarded as a key herbivore in reef communities, grazing by D. antillarum shifts community dominance from macroalgal cover to live coral (Lessios 2005, Tuya et al. 2004).
Townsend, Taryn, Bologna, Paul A.X.
openaire +3 more sources
Las crestas arrecifales son un recurso de significativo valor natural y ecológico. En esta investigación se evaluaron las poblaciones de Acropora palmata y Diadema antillarum en las crestas arrecifales de playa Baracoa y Rincón de Guanabo.
Fredy Hernández-Delgado +2 more
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