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28 results for “coral predation”
MCR LTER: Coral Reef: Growth-predation risk trade-offs constrain the local distribution of a thicket-forming staghorn coral to marginal reef habitats; Data for Ladd et al., 2025, Scientific Reports.
This dataset is in support of the manuscript: Growth-predation risk tradeoffs constrain the local distribution of a thicket-forming staghorn coral to marginal reef habitats. These data were collected to 1) document how Acropora pulchra is distributed around the island of Moorea, and 2) to better understand the ecological processes that shape that distribution. Data include 1) results from surveys around the island of Moorea documenting the presence and size distribution of Acropora pulchra thickets, 2) results from an experiment measuring the growth and survivorship of Acropora pulchra fragments in the presence and absence of fish predators at nearshore fringing reef sites and adjacent sites in the mid lagoon (n = 20 sites in total), and 3) ancillary data on nitrogen content and dN15 in the tissue of the macroalgae Turbinaria ornata, sediment accumulation, and corallivore biomass at the experimental sites. All data were collected in 2016 and 2017.
MCR LTER: Coral Reef: Diadema predation and recruitment in Moorea, French Polynesia
These are field data from Moorea, French Polynesia regarding the population dynamics of Diadema savignyi. Data were collected during the austral winters in 2009 and 2010. Four datasets are provided: (1) recruitment data of Diadema savignyi over the course of ~9 weeks during the austral winter of 2010, (2) predation data of adult Diadema using a tethering experiment, (3) urchin abundance surveys for 2009 and 2010, and (4) a 9 week weekly survey of newly recruited Diadema (test diameter). These data are part of a PhD dissertation, "Herbivore Community Dynamics and Functional Compositions in Moorea, French Polynesia", 2014, published by ProQuest.
Predator-based selection and the impact of edge sympatry on components of coral snake mimicry
<p>Mimicry is a vivid example of how predator-driven selection can impact phenotypic diversity, which itself can be influenced by the presence (sympatry) or absence (allopatry) of a dangerous model. However, the impact of sympatry and allopatry on predation on mimicry systems at fine spatial scales (e.g., edge sympatry, allopatry) is not well understood. We used a clay model study in a montane tropical site in Honduras to test the impact of edge sympatry on 1) overall attack rates, 2) the fitness benefit of mimetic coloration, 3) predation on specific mimetic signal components, and 4) temporal variation in predator-based selection on mimicry components. Unlike previous research, we found that mimetic phenotypes received significantly more attacks than cryptic replicas in edge sympatry, suggesting that mimetic phenotypes might not confer a fitness benefit in areas of edge sympatry. Additionally, we documented temporal variation in predator-based selection, as the impacts of allopatry on predatory attacks varied among years. Our results imply that the effect of sympatry and allopatry on predator-based selection in mimicry systems may be more complex than previously thought for species-rich assemblies of coral snakes and their mimics in the montane tropics.</p>
Fig. 6 in Live coral predation by parrotfishes (Perciformes: Scaridae) in the Abrolhos Bank, eastern Brazil, with comments on the classification of species into functional groups
Fig. 6. (a) Scars caused by large individuals (> 40 cm TL) and (b) scrapes caused by small individuals (20-40 cm TL) of Scarus trispinosus on crustose calcareous algae.
Fig. 4 in Live coral predation by parrotfishes (Perciformes: Scaridae) in the Abrolhos Bank, eastern Brazil, with comments on the classification of species into functional groups
Fig. 4. Bite scars of Sparisoma amplum (a and b) and Scarus trispinosus (c and d) on the corals Montastrea cavernosa (top) and Siderastrea spp. (bottom).
Fig. 3 in Live coral predation by parrotfishes (Perciformes: Scaridae) in the Abrolhos Bank, eastern Brazil, with comments on the classification of species into functional groups
Fig. 3. Focused biting behavior by Sparisoma amplum. (a) Initial-phase individual biting a colony of Mussismilia braziliensis; (b) partial and (c) almost complete coral colony mortality due to Sp. amplum predation; (d) a discrete group of excavated colonies of M. braziliensis on the edge of a Sp. amplum territory.
Predator-based selection and the impact of edge sympatry on components of coral snake mimicry
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Small predators dominate fish predation in coral reef communities
<p><strong>README File</strong></p> <p>The dataset consists of 4 Excel files of which:</p> <p>-<strong>LizardData</strong>: is the fish community data collected on Lizard Island.</p> <p>-<strong>Metanalysis_dataset</strong>: is the gut content metanalysis, used to create the <strong>metanalsamps</strong> dataset, which is the dataset consisting the resampling and binning into body sizes. </p> <p>This was then compared to the <strong>simnetsamps</strong> dataset, which is the resampling and binning from the <strong>LizardData</strong> file.</p> <p> </p>
Data from: Fear effects associated with predator presence and habitat structure interact to alter herbivory on coral reefs
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Recovery of reef shark populations invokes anti-predator behaviours in mesopredatory reef fishes on a coral reef
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Data from: Prevalence of pelagic dependence among coral reef predators across an atoll seascape.
1) Coral reef food webs are complex, vary spatially and remain poorly understood. Certain large predators, notably sharks, are subsidised by pelagic production on outer reef slopes, but how widespread this dependence is across all teleost fishery target species and within atolls is unclear. 2) North Malé Atoll (Maldives) includes oceanic barrier as well as lagoonal reefs. Nine fishery target predators constituting ca. 55% of the local fishery target species biomass at assumed trophic levels 3-5 were selected for analysis. Data were derived from carbon (δ13C), nitrogen (δ15N) and sulfur (δ34S) stable isotopes from predator white dorsal muscle samples, and primary consumer species representing production source end-members. 3) Three-source Bayesian stable isotope mixing models showed that uptake of pelagic production extends throughout the atoll, with predatory fishes showing equal planktonic reliance between inner and outer edge reefs. Median plankton contribution was 65-80% for all groupers and 68-88% for an emperor, a jack and snappers. 4) Lagoonal and atoll edge predators are equally at risk from anthropogenic and climate-induced changes which may impact the linkages they construct, highlighting the need for management plans that transcend the boundaries of this threatened ecosystem.
Relationships between a common Caribbean corallivorous snail and protected area status, coral cover, and predator abundance
<p>As coral populations decline across the Caribbean, it is becoming increasingly important to understand the forces that inhibit coral survivorship and recovery. Predation by corallivores, such as the short coral snail <i>Coralliophila abbreviata</i>,are one threat to the health of reefs worldwide, but understanding of the factors controlling corallivore populations, and therefore corallivore predation pressure, remains limited. To examine the extent to which bottom-up (i.e., coral prey) and top-down (i.e., predators) forces relate to <i>C. abbreviata </i>distributions, we surveyed <i>C. abbreviata </i>abundance, percent coral cover, and the abundance of potential snail predators across six protected and six unprotected reefs in the Florida Keys. We found that <i>C. abbreviata </i>abundance was lower in protected areas, which had more diverse predator assemblages, and that across all sites snail abundance generally increased with coral cover. <i>C. abbreviata </i>abundance had strong, negative relationships with two gastropod predators in particular - the Caribbean spiny lobster (<i>Panulirus argus</i>) and the grunt black margate (<i>Anisotremus surinamensis</i>). Further, we found the size of <i>C. abbreviata </i>was also related to reef protection status, with larger <i>C. abbreviata </i>on average in protected areas, suggesting these gape-limited predators may alter size distributions by targeting small snails. Combined, these results provide preliminary evidence that marine protection in the Florida Keys may be a mechanism available to preserve critical trophic interactions that indirectly promote coral success via control of local populations of the common corallivore <i>C. abbreviata.</i></p>
Data from: Predation risk, resource quality, and reef structural complexity shape territoriality in a coral reef herbivore
For many species securing territories is important for feeding and reproduction. Factors such as competition, habitat availability, and male characteristics can influence an individual's ability to establish and maintain a territory. The risk of predation can have an important influence on feeding and reproduction; however, few have studied its effect on territoriality. We investigated territoriality in a haremic, polygynous species of coral reef herbivore, Sparisoma aurofrenatum (redband parrotfish), across eight reefs in the Florida Keys National Marine Sanctuary that were either protected or unprotected from fishing of piscivorous fishes. We examined how territory size and quality varied with reef protection status, competition, predation risk, and male size. We then determined how territory size and quality influenced harem size and female size to understand the effect of territoriality on reproductive potential. We found that protected reefs trended towards having more large predatory fishes and that territories there were smaller but had greater algal nutritional quality relative to unprotected reefs. Our data suggest that even though males in protected sites have smaller territories, which support fewer females, they may improve their reproductive potential by choosing nutritionally rich areas, which support larger females. Thus, reef protection appears to shape the trade-off that herbivorous fishes make between territory size and quality. Furthermore, we provide evidence that males in unprotected sites, which are generally less complex than protected sites, choose territories with higher structural complexity, suggesting the importance of this type of habitat for feeding and reproduction in S. aurofrenatum. Our work argues that the loss of corals and the resulting decline in structural complexity, as well as management efforts to protect reefs, could alter the territory dynamics and reproductive potential of important herbivorous fish species.
Coral physiology datasets (health/condition, biomarkers, IBR) under combined ocean warming and predation
<p>These datasets were obtained following an experiment testing the combined effects of gradual warming scenarios and predation wounds in coral condition (paleness, bleaching and mortality), cellular stress responses (heat shock protein Hsp70, total ubiquitin Ub, and total antioxidant capacity TAC) and physiological state (integrated biomarker response index, IBR) of seven Scleractinian coral species (<em>Acropora tenuis, Echinopora lamellosa, Montipora capricornis B - </em>brown and G - green<em> </em>morphotypes<em>, Galaxea fascicularis, Psammocora contigua </em>and<em> Turbinaria reniformis</em>) after being exposed for 60 days.</p>
Fig. 1 in Ephemeral and Localized Outbreaks of the Coral Predator Acanthaster cf. solaris in the Southwestern Lagoon of New Caledonia
Fig. 1. Map of the study site showing the location of the 19 sampling stations in New Caledonia's southern lagoon - including all major reef habitats - where abundance of crown-of-thorns seastar (COTS) populations were monitored. Stations where abundance was higher than the outbreak threshold of 40 ind. per 20 min swim are indicated in red. Stations in yellow are those where 1 to 5 ind. per 20 min swim were recorded, and in green, stations where abundances were always <1 ind. per 20 min swim. Stations 1 and 2 are located on coastal fringing reefs, stations 3 to 13 on mid-shelf reefs, stations 14 to 17 on the inner-shelf barrier reefs, and stations 18 and 19 on the outer-reef slopes.
Fig. 3 in Ephemeral and Localized Outbreaks of the Coral Predator Acanthaster cf. solaris in the Southwestern Lagoon of New Caledonia
Fig. 3. Recent impacts of crown-of-thorns seastar (COTS) populations on coral assemblages. Variation in the number of coral colonies presenting white feeding scars representative of COTS predation (white colonies recently preyed upon) among stations. Error bars represent the standard error. Color code for stations is as in figure 1.
Fig. 2 in Ephemeral and Localized Outbreaks of the Coral Predator Acanthaster cf. solaris in the Southwestern Lagoon of New Caledonia
Fig. 2. Spatio-temporal dynamics of crown-of-thorns seastar (COTS) abundance in New Caledonia's southern lagoon. Points represent the mean abundance (log-scale), and error bars the standard error. Horizontal dotted lines indicate the outbreak threshold of 40 ind. per 20 min swim. Color code for stations is as in figure 1.
Figure 3 in Diversity in the diet of the predator Octopus cyanea in the coral reef system of Moorea, French Polynesia
Figure 3. Correlates of diversity in the diet of Octopus cyanea at each of five sampling sites. Dietary diversity (as midden species richness) was positively correlated with diversity of substrate types across the site (top) and with increasing octopus density (bottom). Each point represents all octopuses at a single site. N indicates the number of prey individuals represented by remains at each site.
Figure 1 in Diversity in the diet of the predator Octopus cyanea in the coral reef system of Moorea, French Polynesia
Figure 1. Locations of four nearshore fringing reef sites surveyed for octopuses on the island of Moore'a, adjacent to Tahiti, French Polynesia. The Gump site was located at the Richard B. Gump South Pacific Research Station. Insets indicate the spatial arrangements of dens at two sites: circles indicate dens by marker ID; connecting lines indicate the distance to adjacent dens (in metres, not to scale). Blank line maps of Tahiti and Moorea, and globe used with permission from WorldAtlas.com and FreeUSandWorldmaps.com; den inset by TL.
Data from: Prevalence of pelagic dependence among coral reef predators across an atoll seascape.
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