Dimethylsulfoniopropionate, superoxide dismutase and glutathione as stress response indicators in three corals under short-term hyposalinity stressStephanie G. Gardner, Daniel A. Nielsen, Olivier Laczka, Ronald Shimmon, Victor H. Beltran, Peter J. Ralph & Katherina Petrou
Corals are among the most active producers of dimethylsulfoniopropionate (DMSP), a key molecule in marine sulfur cycling, yet the specific physiological role of DMSP in corals remains elusive. Here, we examine the oxidative stress response of three coral species (Acropora millepora, Stylophora pistillata and Pocillopora damicornis) and explore the antioxidant role of DMSP and its breakdown products under short-term hyposalinity stress. Symbiont photosynthetic activity declined with hyposalinity exposure in all three reef-building corals. This corresponded...
Habitat complexity is known to influence the structure of fish assemblages. A number of techniques have previously been used to measure complexity, including quantitative in situ methods, which can be time-consuming and labour-intensive, and more rapid semi-quantitative visual scoring methods. This study investigated the utility of a novel method for estimating complexity, whereby habitat height was measured using stereo-photogrammetry from diver-operated stereo-video, traditionally used to sample fish assemblages. This ‘stereo-height’ method was compared to established...
Data from: Large-scale, multi-directional larval connectivity among coral reef fish populations in the Great Barrier Reef Marine ParkDavid H. Williamson, Hugo B. Harrison, Glenn R. Almany, Michael L. Berumen, Michael Bode, Mary C. Bonin, Severine Choukroun, Peter J. Doherty, Ashley J. Frisch, Pablo Saenz-Agudelo & Geoffrey P. Jones
Larval dispersal is the key process by which populations of most marine fishes and invertebrates are connected and replenished. Advances in larval tagging and genetics have enhanced our capacity to track larval dispersal, assess scales of population connectivity, and quantify larval exchange among no-take marine reserves and fished areas. Recent studies have found that reserves can be a significant source of recruits for populations up to 40 km away, but the scale and direction of...
Data from: Congruent patterns of connectivity can inform management for broadcast spawning corals on the Great Barrier ReefLukoschek Vimoksalehi, Cynthia Riginos, Madeleine J.H. Van Oppen, Madeleine J. H. Van Oppen & Vimoksalehi Lukoschek
Connectivity underpins the persistence and recovery of marine ecosystems. The Great Barrier Reef (GBR) is the world's largest coral reef ecosystem and managed by an extensive network of no-take zones; however, information about connectivity was not available to optimize the network's configuration. We use multivariate analyses, Bayesian clustering algorithms and assignment tests of the largest population genetic data set for any organism on the GBR to date (Acropora tenuis, >2500 colonies; >50 reefs, genotyped for...
Data from: Recovery from bleaching is mediated by threshold densities of background thermo-tolerant symbiont types in a reef-building coralLine K. Bay, Jason Doyle, Murray Logan & Ray Berkelmans
Sensitive molecular analyses show that most corals host a complement of Symbiodinium genotypes that includes thermo-tolerant types in low abundance. While tolerant symbiont types are hypothesized to facilitate tolerance to temperature and recovery from bleaching, empirical data on their distribution and relative abundance in corals under ambient and stress conditions are still rare. We quantified visual bleaching and mortality of coral hosts, along with relative abundance of C- and D-type Symbiodinium cells in 82 Acropora...
Data from: Maternal effects and Symbiodinium community composition drive differential patterns in juvenile survival in the coral Acropora tenuisKate M. Quigley, Bette L. Willis & Line K. Bay
Coral endosymbionts in the dinoflagellate genus Symbiodinium are known to impact host physiology and have led to the evolution of reef-building, but less is known about how symbiotic communities in early life-history stages and their interactions with host parental identity shape the structure of coral communities on reefs. Differentiating the roles of environmental and biological factors driving variation in population demographic processes, particularly larval settlement, early juvenile survival and the onset of symbiosis is key...
Local adaptation is ubiquitous, but the molecular mechanisms that give rise to this ecological phenomenon remain largely unknown. A year-long reciprocal transplant of mustard hill coral (Porites astreoides) between a highly environmentally variable inshore habitat and a more stable offshore habitat demonstrated that populations exhibit phenotypic signatures that are consistent with local adaptation. We characterized the genomic basis of this adaptation in both coral hosts and their intracellular symbionts (Symbiodinium sp.) using genome-wide gene expression...
Data from: Sperm dispersal distances estimated by parentage analysis in a brooding scleractinian coralPatricia Warner, Bette Willis, Madeleine Van Oppen, Madeleine J. H. Van Oppen, Patricia A. Warner & Bette L. Willis
Within populations of brooding sessile corals, sperm dispersal constitutes the mechanism by which gametes interact and mating occurs, and forms the first link in the network of processes that determine species-wide connectivity patterns. However, almost nothing is known about sperm dispersal for any internally fertilizing coral. In this study, we conducted a parentage analysis on coral larvae collected from an area of mapped colonies, in order to measure the distance sperm disperses for the first...
Australian Institute of Marine Science8
James Cook University4
University of Melbourne3
The University of Texas at Austin1
University of Queensland1
King Abdullah University of Science and Technology1
University Austral de Chile1
University of Perpignan1
University of Technology Sydney1