Results 71 to 80 of about 6,145 (182)

The Multifaceted Role of Gut Microbiota in Sea Urchin Digestion: Diversity, Function, Symbiosis, and Carbohydrate Degradation

open access: yesAquaculture Research, Volume 2024, Issue 1, 2024.
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

open access: yes, 2013
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]

open access: yesProceedings of the Zoological Society of London, 1956
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

A recent increase in the abundance of the echinoid Diadema antillarum in Dominica (Lesser Antilles): 2001-2005

open access: yesRevista de Biología Tropical, 2006
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

open access: yesThe Biological Bulletin, 1967
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

open access: yes, 2019
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

open access: yes, 1984
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  

Densities of small corals in Diadema halos and temporal stability of D. antillarum clusters from surveys in St. John, US Virgin Islands in 2019 and 2020

open access: yes, 2021
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

open access: yesGulf and Caribbean Research, 2007
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

Evaluación de "Acropora palmata" (Lamarck, 1816) y "Diadema antillarum" Philippi y Agassiz, 1863 en las crestas arrecifales de Playa Baracoa (Provincia Artemisa) y rincón de Guanabo (Provincia La Habana), Cuba

open access: yesRevista de Investigaciones Marinas, 2018
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
doaj  

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