keyword
MENU ▼
Read by QxMD icon Read
search

Coral caribbean

keyword
https://www.readbyqxmd.com/read/28337605/application-of-diet-theory-reveals-context-dependent-foraging-preferences-in-an-herbivorous-coral-reef-fish
#1
John Hanmer, J Wilson White, Joseph R Pawlik
Dietary preferences of grazers can drive spatial variability in top-down control of autotroph communities, because diet composition may depend on the relative availability of autotroph species. On Caribbean coral reefs, parrotfish grazing is important in limiting macroalgae, but parrotfish dietary preferences are poorly understood. We applied diet-switching analysis to quantify the foraging preferences of the redband parrotfish (Sparisoma aurofrenatum). At 12 Caribbean reefs, we observed 293 redband parrotfish in 5-min feeding bouts and quantified relative benthic algal cover using quadrats...
March 23, 2017: Oecologia
https://www.readbyqxmd.com/read/28329020/how-a-collaborative-integrated-taxonomic-effort-has-trained-new-spongiologists-and-improved-knowledge-of-martinique-island-french-antilles-eastern-caribbean-sea-marine-biodiversity
#2
Thierry Pérez, Maria-Cristina Díaz, César Ruiz, Baslavi Cóndor-Luján, Michelle Klautau, Eduardo Hajdu, Gisele Lobo-Hajdu, Sven Zea, Shirley A Pomponi, Robert W Thacker, Sophie Carteron, Guillaume Tollu, Adeline Pouget-Cuvelier, Philippe Thélamon, Jean-Philippe Marechal, Olivier P Thomas, Alexander V Ereskovsky, Jean Vacelet, Nicole Boury-Esnault
Although sponges are important components of benthic ecosystems of the Caribbean Sea, their diversity remained poorly investigated in the Lesser Antilles. By organizing a training course in Martinique, we wanted both to promote taxonomy and to provide a first inventory of the sponge diversity on this island. The course was like a naturalist expedition, with a field laboratory and a classroom nearby. Early-career scientists and environmental managers were trained in sponge taxonomy. We gathered unpublished data and conducted an inventory at 13 coastal sites...
2017: PloS One
https://www.readbyqxmd.com/read/28320966/tropical-dead-zones-and-mass-mortalities-on-coral-reefs
#3
Andrew H Altieri, Seamus B Harrison, Janina Seemann, Rachel Collin, Robert J Diaz, Nancy Knowlton
Degradation of coastal water quality in the form of low dissolved oxygen levels (hypoxia) can harm biodiversity, ecosystem function, and human wellbeing. Extreme hypoxic conditions along the coast, leading to what are often referred to as "dead zones," are known primarily from temperate regions. However, little is known about the potential threat of hypoxia in the tropics, even though the known risk factors, including eutrophication and elevated temperatures, are common. Here we document an unprecedented hypoxic event on the Caribbean coast of Panama and assess the risk of dead zones to coral reefs worldwide...
March 20, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28319134/genotype-and-local-environment-dynamically-influence-growth-disturbance-response-and-survivorship-in-the-threatened-coral-acropora-cervicornis
#4
Crawford Drury, Derek Manzello, Diego Lirman
The relationship between the coral genotype and the environment is an important area of research in degraded coral reef ecosystems. We used a reciprocal outplanting experiment with 930 corals representing ten genotypes on each of eight reefs to investigate the influence of genotype and the environment on growth and survivorship in the threatened Caribbean staghorn coral, Acropora cervicornis. Coral genotype and site were strong drivers of coral growth and individual genotypes exhibited flexible, non-conserved reaction norms, complemented by ten-fold differences in growth between specific G-E combinations...
2017: PloS One
https://www.readbyqxmd.com/read/28261447/caribbean-massive-corals-not-recovering-from-repeated-thermal-stress-events-during-2005-2013
#5
Benjamin Paul Neal, Adi Khen, Tali Treibitz, Oscar Beijbom, Grace O'Connor, Mary Alice Coffroth, Nancy Knowlton, David Kriegman, B Greg Mitchell, David I Kline
Massive coral bleaching events associated with high sea surface temperatures are forecast to become more frequent and severe in the future due to climate change. Monitoring colony recovery from bleaching disturbances over multiyear time frames is important for improving predictions of future coral community changes. However, there are currently few multiyear studies describing long-term outcomes for coral colonies following acute bleaching events. We recorded colony pigmentation and size for bleached and unbleached groups of co-located conspecifics of three major reef-building scleractinian corals (Orbicella franksi, Siderastrea siderea, and Stephanocoenia michelini; n = 198 total) in Bocas del Toro, Panama, during the major 2005 bleaching event and then monitored pigmentation status and changes live tissue colony size for 8 years (2005-2013)...
March 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28243525/genetic-diversity-and-differentiation-in-reef-building-millepora-species-as-revealed-by-cross-species-amplification-of-fifteen-novel-microsatellite-loci
#6
Caroline E Dubé, Serge Planes, Yuxiang Zhou, Véronique Berteaux-Lecellier, Emilie Boissin
Quantifying the genetic diversity in natural populations is crucial to address ecological and evolutionary questions. Despite recent advances in whole-genome sequencing, microsatellite markers have remained one of the most powerful tools for a myriad of population genetic approaches. Here, we used the 454 sequencing technique to develop microsatellite loci in the fire coral Millepora platyphylla, an important reef-builder of Indo-Pacific reefs. We tested the cross-species amplification of these loci in five other species of the genus Millepora and analysed its success in correlation with the genetic distances between species using mitochondrial 16S sequences...
2017: PeerJ
https://www.readbyqxmd.com/read/28228681/discovery-of-a-new-species-of-hermit-crab-of-the-genus-pylopaguropsis-alcock-1905-from-the-caribbean-den-commensal-or-cleaner-crustacea-anomura-paguridae
#7
Rafael Lemaitre
A new secretive, yet brightly colored hermit crab species of the family Paguridae, Pylopaguropsis mollymulleraesp. n., is fully described based on specimens from the reefs of Bonaire, Lesser Antilles, southern Caribbean Sea. Populations of this new species were discovered and photographed in the Bonaire National Marine Park under a large coral ledge, at a depth of 13.7 m, living in crevices known by scuba divers to serve as den to a pair of "flaming reef lobsters" Enoplometopus antillensis, or a "broad banded moray" Channomuraena vittata...
2017: ZooKeys
https://www.readbyqxmd.com/read/28225766/marine-actinobacteria-as-a-source-of-compounds-for-phytopathogen-control-an-integrative-metabolic-profiling-bioactivity-and-taxonomical-approach
#8
Luz A Betancur, Sandra J Naranjo-Gaybor, Diana M Vinchira-Villarraga, Nubia C Moreno-Sarmiento, Luis A Maldonado, Zulma R Suarez-Moreno, Alejandro Acosta-González, Gillermo F Padilla-Gonzalez, Mónica Puyana, Leonardo Castellanos, Freddy A Ramos
Marine bacteria are considered as promising sources for the discovery of novel biologically active compounds. In this study, samples of sediment, invertebrate and algae were collected from the Providencia and Santa Catalina coral reef (Colombian Caribbean Sea) with the aim of isolating Actinobateria-like strain able to produce antimicrobial and quorum quenching compounds against pathogens. Several approaches were used to select actinobacterial isolates, obtaining 203 strains from all samples. According to their 16S rRNA gene sequencing, a total of 24 strains was classified within Actinobacteria represented by three genera: Streptomyces, Micromonospora, and Gordonia...
2017: PloS One
https://www.readbyqxmd.com/read/28168098/identifying-zooplankton-community-changes-between-shallow-and-upper-mesophotic-reefs-on-the-mesoamerican-barrier-reef-caribbean
#9
Dominic A Andradi-Brown, Catherine E I Head, Dan A Exton, Christina L Hunt, Alicia Hendrix, Erika Gress, Alex D Rogers
Mesophotic coral ecosystems (MCEs, reefs 30-150 m) are understudied, yet the limited research conducted has been biased towards large sessile taxa, such as scleractinian corals and sponges, or mobile taxa such as fishes. Here we investigate zooplankton communities on shallow reefs and MCEs around Utila on the southern Mesoamerican Barrier Reef using planktonic light traps. Zooplankton samples were sorted into broad taxonomic groups. Our results indicate similar taxonomic zooplankton richness and overall biomass between shallow reefs and MCEs...
2017: PeerJ
https://www.readbyqxmd.com/read/28152002/the-effects-of-elevated-seawater-temperatures-on-caribbean-gorgonian-corals-and-their-algal-symbionts-symbiodinium-spp
#10
Tamar L Goulet, Kartick P Shirur, Blake D Ramsby, Roberto Iglesias-Prieto
Global climate change not only leads to elevated seawater temperatures but also to episodic anomalously high or low temperatures lasting for several hours to days. Scleractinian corals are detrimentally affected by thermal fluctuations, which often lead to an uncoupling of their mutualism with Symbiodinium spp. (coral bleaching) and potentially coral death. Consequently, on many Caribbean reefs scleractinian coral cover has plummeted. Conversely, gorgonian corals persist, with their abundance even increasing...
2017: PloS One
https://www.readbyqxmd.com/read/28130801/bottom-up-and-top-down-controls-on-coral-reef-sponges-disentangling-within-habitat-and-between-habitat-processes
#11
Janie Wulff
Polarized debates about top-down vs. bottom-up control have given way to more nuanced understanding of control by both resources and consumers in many systems, but coral reef sponges have recently been asserted to differ from other groups in being controlled exclusively top-down. This assertion has been countered by reports of exclusively bottom-up control, with both conclusions based on studies of the same species. Accelerating deterioration of coral reefs motivates knowing the contexts in which either consumers or nutrients or both control key ecosystem role players like sponges...
January 28, 2017: Ecology
https://www.readbyqxmd.com/read/28112169/prehistorical-and-historical-declines-in-caribbean-coral-reef-accretion-rates-driven-by-loss-of-parrotfish
#12
Katie L Cramer, Aaron O'Dea, Tara R Clark, Jian-Xin Zhao, Richard D Norris
Caribbean coral reefs have transformed into algal-dominated habitats over recent decades, but the mechanisms of change are unresolved due to a lack of quantitative ecological data before large-scale human impacts. To understand the role of reduced herbivory in recent coral declines, we produce a high-resolution 3,000 year record of reef accretion rate and herbivore (parrotfish and urchin) abundance from the analysis of sediments and fish, coral and urchin subfossils within cores from Caribbean Panama. At each site, declines in accretion rates and parrotfish abundance were initiated in the prehistorical or historical period...
January 23, 2017: Nature Communications
https://www.readbyqxmd.com/read/28097070/sponge-exhalent-seawater-contains-a-unique-chemical-profile-of-dissolved-organic-matter
#13
Cara L Fiore, Christopher J Freeman, Elizabeth B Kujawinski
Sponges are efficient filter feeders, removing significant portions of particulate and dissolved organic matter (POM, DOM) from the water column. While the assimilation and respiration of POM and DOM by sponges and their abundant microbial symbiont communities have received much attention, there is virtually no information on the impact of sponge holobiont metabolism on the composition of DOM at a molecular-level. We applied untargeted and targeted metabolomics techniques to characterize DOM in seawater samples prior to entering the sponge (inhalant reef water), in samples exiting the sponge (exhalent seawater), and in samples collected just outside the reef area (off reef seawater)...
2017: PeerJ
https://www.readbyqxmd.com/read/28072444/predator-effects-on-reef-fish-settlement-depend-on-predator-origin-and-recruit-density
#14
Cassandra E Benkwitt
During major life-history transitions animals often experience high mortality rates due to predation, making predator avoidance particularly advantageous during these times. There is mixed evidence from a limited number of studies, however, regarding how predator presence influences settlement of coral-reef fishes and it is unknown how other potentially mediating factors, including predator origin (native versus non-native) or interactions among conspecific recruits, mediate the non-consumptive effects of predators on reef fish settlement...
January 10, 2017: Ecology
https://www.readbyqxmd.com/read/28054550/the-emergent-role-of-small-bodied-herbivores-in-pre-empting-phase-shifts-on-degraded-coral-reefs
#15
Caitlin D Kuempel, Andrew H Altieri
Natural and anthropogenic stressors can cause phase shifts from coral-dominated to algal-dominated states. In the Caribbean, over-fishing of large herbivorous fish and disease among the long-spined urchin, Diadema, have facilitated algal growth on degraded reefs. We found that diminutive species of urchin and parrotfish, which escaped die-offs and fishing pressure, can achieve abundances comparable to total herbivore biomass on healthier, protected reefs, and exert sufficient grazing function to pre-empt macroalgal dominance following mass coral mortality...
January 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28027580/effects-of-predation-and-nutrient-enrichment-on-the-success-and-microbiome-of-a-foundational-coral
#16
Elizabeth C Shaver, Andrew A Shantz, Ryan McMinds, Deron E Burkepile, Rebecca L Vega Thurber, Brian R Silliman
By inflicting damage to prey tissues, consumer species may increase stress in prey hosts and reduce overall fitness (i.e., primary effects, such as growth or reproduction) or cause secondary effects by affecting prey interactions with other species such as microbes. However, little is known about how abiotic conditions affect the outcomes of these biotic interactions. In coral reef communities, both nutrient enrichment and predation have been linked to reduced fitness and disease facilitation in corals, yet no study to date has tested their combined effects on corals or their associated microbial communities (i...
December 27, 2016: Ecology
https://www.readbyqxmd.com/read/27904505/composition-and-biological-activities-of-the-aqueous-extracts-of-three-scleractinian-corals-from-the-mexican-caribbean-pseudodiploria-strigosa-porites-astreoides-and-siderastrea-siderea
#17
Alejandro García-Arredondo, Alejandra Rojas-Molina, César Ibarra-Alvarado, Fernando Lazcano-Pérez, Roberto Arreguín-Espinosa, Judith Sánchez-Rodríguez
BACKGROUND: Scleractinian corals (stony corals) are the most abundant reef-forming cnidarians found in coral reefs throughout the world. Despite their abundance and ecological importance, information about the diversity of their toxins and their biological activities is very scarce. In this study, the chemical composition and the biological activities of the aqueous extracts of Pseudodiploria strigosa, Porites astreoides and Siderastrea siderea, three scleractinian corals from the Mexican Caribbean, have been assessed for the first time...
2016: Journal of Venomous Animals and Toxins Including Tropical Diseases
https://www.readbyqxmd.com/read/27902710/aspergillus-sydowii-and-other-potential-fungal-pathogens-in-gorgonian-octocorals-of-the-ecuadorian-pacific
#18
M Mar Soler-Hurtado, José Vladimir Sandoval-Sierra, Annie Machordom, Javier Diéguez-Uribeondo
Emerging fungal diseases are threatening ecosystems and have increased in recent decades. In corals, the prevalence and consequences of these infections have also increased in frequency and severity. Coral reefs are affected by an emerging fungal disease named aspergillosis, caused by Aspergillus sydowii. This disease and its pathogen have been reported along the Caribbean and Pacific coasts of Colombia. Despite this, an important number of coral reefs worldwide have not been investigated for the presence of this pathogen...
2016: PloS One
https://www.readbyqxmd.com/read/27867763/sexual-reproduction-in-the-caribbean-coral-genus-isophyllia-scleractinia-mussidae
#19
Derek Soto, Ernesto Weil
The sexual pattern, reproductive mode, and timing of reproduction of Isophyllia sinuosa and Isophyllia rigida, two Caribbean Mussids, were assessed by histological analysis of specimens collected monthly during 2000-2001. Both species are simultaneous hermaphroditic brooders characterized by a single annual gametogenetic cycle. Spermatocytes and oocytes of different stages were found to develop within the same mesentery indicating sequential maturation for extended planulation. Oogenesis took place during May through April in I...
2016: PeerJ
https://www.readbyqxmd.com/read/27866895/empty-niches-after-extinctions-increase-population-sizes-of-modern-corals
#20
Carlos Prada, Bishoy Hanna, Ann F Budd, Cheryl M Woodley, Jeremy Schmutz, Jane Grimwood, Roberto Iglesias-Prieto, John M Pandolfi, Don Levitan, Kenneth G Johnson, Nancy Knowlton, Hiroaki Kitano, Michael DeGiorgio, Mónica Medina
Large environmental fluctuations often cause mass extinctions, extirpating species and transforming communities [1, 2]. While the effects on community structure are evident in the fossil record, demographic consequences for populations of individual species are harder to evaluate because fossils reveal relative, but not absolute, abundances. However, genomic analyses of living species that have survived a mass extinction event offer the potential for understanding the demographic effects of such environmental fluctuations on extant species...
December 5, 2016: Current Biology: CB
keyword
keyword
49521
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"