Results 21 to 30 of about 417 (152)

Evaluation of in vitro treatments against the causative agent of Diadema antillarum scuticociliatosis (DaSc)

Diseases of Aquatic Organisms
In the 1980s, a mass die-off of the long-spined sea urchin Diadema antillarum occurred on Florida and Caribbean coral reefs. D. antillarum populations largely did not recover, and in 2022, remaining populations experienced another mass mortality event. A ciliate most similar to Philaster apodigitiformis was identified as the causative agent of the 2022
Ian Hewson, Christina A Kellogg, James Evans   +2 more
exaly   +3 more sources

Half a century of echinoid population decline in the northern Gulf of Aqaba, Red Sea. [PDF]

J Anim Ecol
Multi‐decadal monitoring in the Gulf of Aqaba, northern Red Sea, reveals severe (>90%) declines of key echinoid grazers. These declines signify a collapse of crucial herbivory functions underpinning coral reef resilience. Results implicate accelerating anthropogenic stress as a principal driver, emphasizing the urgent need for sustained, species ...
Eviatar G, Bronstein O.
europepmc   +2 more sources

Spread of a sea urchin disease to the Indian Ocean causes widespread mortalities-Evidence from Réunion Island. [PDF]

Ecology
Ecology, Volume 106, Issue 1, January 2025.
Quod JP, Séré M, Hewson I, Roth L, Bronstein O.   +4 more
europepmc   +2 more sources

Unravelling echinoid mass mortalities: a global overview of mechanisms, spatio-temporal trends, and taxonomic insights. [PDF]

Biol Rev Camb Philos Soc
ABSTRACT Mass mortality events (MMEs) have been occurring since the dawn of time. However, in contrast to terrestrial events, most marine MMEs remain undetected, largely due to the inaccessibility of many marine environments. One of the most notorious and best‐studied marine MMEs in modern times is that of the population collapse of the echinoid ...
Schmidt LM, Anderson Benaim G, Bronstein O.   +2 more
europepmc   +2 more sources

Can sea urchins beat the heat? Sea urchins, thermal tolerance and climate change [PDF]

PeerJ, 2015
The massive die-off of the long-spined sea urchin, Diadema antillarum, a significant reef grazer, in the mid 1980s was followed by phase shifts from coral dominated to macroalgae dominated reefs in the Caribbean.
Elizabeth Sherman
doaj   +2 more sources

Applying coral breeding to reef restoration: best practices, knowledge gaps, and priority actions in a rapidly‐evolving field

Restoration Ecology, Volume 31, Issue 7, September 2023., 2023
Reversing coral reef decline requires reducing environmental threats while actively restoring reef ecological structure and function. A promising restoration approach uses coral breeding to boost natural recruitment and repopulate reefs with genetically diverse coral communities. Recent advances in predicting spawning, capturing spawn, culturing larvae,
Anastazia T. Banaszak, Kristen L. Marhaver, Margaret W. Miller, Aaron C. Hartmann, Rebecca Albright, Mary Hagedorn, Peter L. Harrison, Kelly R. W. Latijnhouwers, Sandra Mendoza Quiroz, Valeria Pizarro, Valérie F. Chamberland   +10 more
wiley   +1 more source

Testing sea urchin and green sea turtle consumption of the allelopathic macroalga Galaxaura divaricata. [PDF]

Ecol Evol
This study investigates the feeding preferences of sea urchins and green sea turtles for the coral‐damaging macroalga Galaxaura divaricata. Results indicate that while sea urchins consume both G. divaricata and a preferred nonallelopathic alga, their consumption rates are significantly lower for G. divaricata.
Nieder C, Heatwole SJ, Liao CP, Lee CL, Chen CA, Liu SL.   +5 more
europepmc   +2 more sources

Co‐occurrence of herbivorous fish functional groups correlates with enhanced coral reef benthic state

Global Ecology and Biogeography, Volume 32, Issue 3, Page 435-449, March 2023., 2023
Abstract Aim Biodiversity loss is impacting essential ecosystem functions and services across the globe. Recently, our interest in the benefits of biodiversity for ecosystem function has shifted focus from measurements of species richness to functional diversity and composition.
Catherine E. Sheppard, Gareth J. Williams, Dan A. Exton, Sally A. Keith   +3 more
wiley   +1 more source

Diagnostic Methods for the Comprehensive Health Assessment of the Long-Spined Sea Urchin, Diadema antillarum

EDIS, 2020
This 55-page document contains a wealth of information on the long-spined sea urchin, which is an important animal in coral reef ecosystems. The publication discusses diagnostic methods for Diadema antillarum and provides reporting forms for laboratory ...
Ruth Francis-Floyd
doaj   +5 more sources

Algal cover and sea urchin spatial distribution at Madeira Island (NE Atlantic)

Scientia Marina, 2001
This study describes sea urchin spatial distribution in relation to environmental factors, and the relationship between Diadema antillarum density and algal abundance.
Filipe M. A. Alves, Luís M. Chícharo, Ester Serrao, Antonio D. Abreu   +3 more
doaj   +1 more source