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232 results for “coral reef fish”
Data from: Spatial patterns of self-recruitment of a coral reef fish in relation to island-scale retention mechanisms
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Data from: Spatial and temporal patterns of larval dispersal in a coral-reef fish metapopulation: evidence of variable reproductive success
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Data from: Ectoparasites increase swimming costs in a coral reef fish
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Data from: Disentangling drivers of the abundance of coral reef fishes in the Western Indian Ocean
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Data from: Seascape continuity plays an important role in determining patterns of spatial genetic structure in a coral reef fish
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Data from: Widespread hybridization and bidirectional introgression in sympatric species of coral reef fish
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Fishing and habitat condition differentially affect size spectra slopes of coral reef fishes
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Volatility in coral cover erodes niche structure, but not diversity, in reef fish assemblages
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Multiple cleaner species provide simultaneous services to coral reef fish clients
<p>Cleaning symbioses on tropical coral reefs are typically documented between two species: a single client fish and one or more conspecific cleaners. However, multiple Caribbean cleaner species often live sympatrically and have been anecdotally reported to simultaneously clean the same client. The patterns and processes driving these interactions are poorly understood and cleaning interactions involving multiple cleaner species may be subject to different driving forces than those involving a single cleaner species. Here we used remote underwater videography on three reefs in Honduras to record simultaneous cleaning interactions involving Pederson's cleaner shrimp (<i>Ancylomenes pedersoni</i>)<i> </i>and cleaner gobies (<i>Elacatinus </i>spp.). Our multi-year dataset shows cleaner gobies joined 28% of all interactions initiated at <i>A. pedersoni</i> cleaning stations with cleaner gobies residing nearby, and 9% of all cleaning interactions across our study sites. Client body size significantly predicted simultaneous cleaning interactions, with 45% of interactions simultaneous for clients >20cm total body length compared to only 8% for clients <20cm. We also found that simultaneous cleaning interactions were over twice as long as solitary shrimp-only interactions. Moreover, interactions were always initiated by a shrimp with gobies joining simultaneously and we recorded no observations of aggression between the two cleaners. We suggest the possibilities of cooperative and exploitative relationships between the two cleaners.</p>
Data from: Unexpected high vulnerability of functions in wilderness areas: evidence from coral reef fishes
High species richness is thought to support the delivery of multiple ecosystem functions and services under changing environments. Yet, some species might perform unique functional roles while others are redundant. Thus, the benefits of high species richness in maintaining ecosystem functioning are uncertain if functions have little redundancy, potentially leading to high vulnerability of functions. We studied the natural propensity of assemblages to be functionally buffered against loss prior to fishing activities, using functional trait combinations, in coral reef fish assemblages across unfished wilderness areas of the Indo-Pacific: Chagos Archipelago, New Caledonia and French Polynesia. Fish functional diversity in these wilderness areas is highly vulnerable to fishing, explained by species- and abundance-based redundancy packed into a small combination of traits, leaving most other trait combinations (60%) sensitive to fishing, with no redundancy. Functional vulnerability peaks for mobile and sedentary top predators, and large species in general. Functional vulnerability decreases for certain functional entities in New Caledonia, where overall functional redundancy was higher. Uncovering these baseline patterns of functional vulnerability can offer early warning signals of the damaging effects from fishing, and may serve as baselines to guide precautionary and even proactive conservation actions.
Data from: Warming has a greater effect than elevated CO2 on predator–prey interactions in coral reef fish
Ocean acidification and warming, driven by anthropogenic CO2 emissions, are considered to be among the greatest threats facing marine organisms. While each stressor in isolation has been studied extensively, there has been less focus on their combined effects, which could impact key ecological processes. We tested the independent and combined effects of short-term exposure to elevated CO2 and temperature on the predator–prey interactions of a common pair of coral reef fishes (Pomacentrus wardi and its predator, Pseudochromis fuscus). We found that predator success increased following independent exposure to high temperature and elevated CO2. Overall, high temperature had an overwhelming effect on the escape behaviour of the prey compared with the combined exposure to elevated CO2 and high temperature or the independent effect of elevated CO2. Exposure to high temperatures led to an increase in attack and predation rates. By contrast, we observed little influence of elevated CO2 on the behaviour of the predator, suggesting that the attack behaviour of P. fuscus was robust to this environmental change. This is the first study to address how the kinematics and swimming performance at the basis of predator–prey interactions may change in response to concurrent exposure to elevated CO2 and high temperatures and represents an important step to forecasting the responses of interacting species to climate change.
Data from: Marginal sinks or potential refuges? Costs and benefits for coral-obligate reef fishes at deep range margins
Escalating climate-related disturbances and asymmetric habitat losses will increasingly result in species living in more marginal habitats. Marginal habitats may represent important refuges if individuals can acquire adequate resources to survive and reproduce. However, resources at range margins are often distributed more sparsely; therefore increased effort to acquire resources can result in sub-optimal performance and lead to marginal populations becoming non-self-sustaining sink-populations. Shifting resource availability is likely to be particularly problematic for dietary specialists. Here, we use extensive in-situ behavioural observations and physiological condition measurements to examine the costs and benefits of resource-acquisition along a depth-gradient in two obligate corallivore reef fishes with contrasting levels of dietary specialisiation. As expected, the space utilised to secure coral-resources increased towards the lower depth margin. However, increased territory sizes resulted in equal or greater availability of resources within deeper territories. In addition, we observed decreased competition and no differences in foraging-distance, pairing-behaviour, body condition or fecundity at greater depths. Contrary to expectation, our results demonstrate that coral-obligate fishes can select high-quality coral patches on the deeper-reef to access equal or greater resources than their shallow-water counterparts, with no extra costs. This suggests depth offers a viable potential refuge for some at-risk coral-specialist fishes.
Data from: The evolution of traits and functions in herbivorous coral reef fishes through space and time
Herbivory by fishes has been identified as a key ecological process shaping coral reefs through time. Although taxonomically limited, herbivorous reef fishes display a wide range of traits, which results in varied ecosystem functions on reefs around the world. Yet, we understand little about how these trait combinations and functions in ecosystems changed through time and across biogeographic realms. Here we used fossils and phylogenies in a functional ecological framework to reveal temporal changes in nominally herbivorous fish assemblages among oceanic basins in both trait space and lineage richness among functions. We show that the trait space occupied by extant herbivorous fishes in the Indo-Pacific resulted from an expansion of traits from the ancestral Tethyan assemblages. By contrast, trait space in the Atlantic is the result of lineage turnover, with relatively recent colonization by lineages that arose in the east Tethys/Indo-Pacific. From an ecosystem function perspective, the Atlantic supports a depauperate fauna, with few extant herbivorous reef fish lineages performing each function. Indo-Pacific fishes support both more functions and more lineages within each function, with a marked Miocene to Pleistocene expansion. These disparities highlight the importance of history in explaining global variation in fish functional composition on coral reefs.
Data from: Individual-based analyses reveal limited functional overlap in a coral reef fish community.
1.Detailed knowledge of a species' functional niche is crucial for the study of ecological communities and processes. The extent of niche overlap, functional redundancy and functional complementarity are of particular importance if we are to understand ecosystem processes and their vulnerability to disturbances. 2.Coral reefs are among the most threatened marine systems, and anthropogenic activity is changing the functional composition of reefs. The loss of herbivorous fishes is particularly concerning as the removal of algae is crucial for the growth and survival of corals. Yet, the foraging patterns of the various herbivorous fish species are poorly understood. 3.Using a multidimensional framework, we present novel individual-based analyses of species' realized functional niches, which we apply to a herbivorous coral reef fish community. In calculating niche volumes for 21 species, based on their microhabitat utilization patterns during foraging, and computing functional overlaps, we provide a measurement of functional redundancy or complementarity. Complementarity is the inverse of redundancy and is defined as less than 50% overlap in niche volumes. 4.The analyses reveal extensive complementarity with an average functional overlap of just 15.2%. Furthermore, the analyses divide herbivorous reef fishes into two broad groups. The first group (predominantly surgeonfishes and parrotfishes) comprises species feeding on exposed surfaces and predominantly open reef matrix or sandy substrata, resulting in small niche volumes and extensive complementarity. In contrast, the second group consists of species (predominantly rabbitfishes) that feed over a wider range of microhabitats, penetrating the reef matrix to exploit concealed surfaces of various substratum types. These species show high variation among individuals, leading to large niche volumes, more overlap and less complementarity. 5.These results may have crucial consequences for our understanding of herbivorous processes on coral reefs, as algal removal appears to depend strongly on species-specific microhabitat utilization patterns of herbivores. Furthermore, the results emphasize the capacity of the individual-based analyses to reveal variation in the functional niches of species, even in high diversity systems such as coral reefs, demonstrating its potential applicability to other high-diversity ecosystems.
Figure 3 from: Welicky RL, Hadfield KA, Sikkel PC, Smit NJ (2017) Molecular assessment of three species of Anilocra (Isopoda, Cymothoidae) ectoparasites from Caribbean coral reef fishes, with the description of Anilocra brillae sp. n. ZooKeys 663: 21-43. https://doi.org/10.3897/zookeys.663.11415
Figure 3 - Anilocra haemuli transitional stage (12 mm): A dorsal view B pereopod 1 C dorsal view of cephalon D ventral view of cephalon E pereopod 7 F dorsal pleotelson G lateral view.
Figure 1 from: Welicky RL, Hadfield KA, Sikkel PC, Smit NJ (2017) Molecular assessment of three species of Anilocra (Isopoda, Cymothoidae) ectoparasites from Caribbean coral reef fishes, with the description of Anilocra brillae sp. n. ZooKeys 663: 21-43. https://doi.org/10.3897/zookeys.663.11415
Figure 1 - Anilocra haemuli female (29 mm) A–D Anilocra haemuli female (23 mm) E–I: A dorsal view B lateral view C dorsal view of cephalon D ventral view of cephalon. E dorsal pleotelson F pereopod 7 G pereopod 2 H pereopod 1 I pereopod 6.
Figure 6 from: Welicky RL, Hadfield KA, Sikkel PC, Smit NJ (2017) Molecular assessment of three species of Anilocra (Isopoda, Cymothoidae) ectoparasites from Caribbean coral reef fishes, with the description of Anilocra brillae sp. n. ZooKeys 663: 21-43. https://doi.org/10.3897/zookeys.663.11415
Figure 6 - Anilocra brillae sp. n. female paratype (39 mm) (AMNH_IZC 250210) A, G–K Anilocra brillae sp. n. female (pleotelson damaged) B–F: A antenna (left) and antennula (right) B maxilla C article 3 of maxilliped D maxillule E mandible F maxilliped G–K pleopods 1–5 respectively.
Figure 2 from: Welicky RL, Hadfield KA, Sikkel PC, Smit NJ (2017) Molecular assessment of three species of Anilocra (Isopoda, Cymothoidae) ectoparasites from Caribbean coral reef fishes, with the description of Anilocra brillae sp. n. ZooKeys 663: 21-43. https://doi.org/10.3897/zookeys.663.11415
Figure 2 - Anilocra haemuli female (23 mm) A, G–K Anilocra haemuli female (25 mm) B–F: A antenna (left) and antennula (right) B maxilla C article 3 of maxilliped D maxillule E mandible F maxilliped G–K pleopods 1–5 respectively.
Figure 5 from: Welicky RL, Hadfield KA, Sikkel PC, Smit NJ (2017) Molecular assessment of three species of Anilocra (Isopoda, Cymothoidae) ectoparasites from Caribbean coral reef fishes, with the description of Anilocra brillae sp. n. ZooKeys 663: 21-43. https://doi.org/10.3897/zookeys.663.11415
Figure 5 - Anilocra brillae sp. n. female holotype (38 mm)(AMNH_IZC 250209) A–E Anilocra brillae sp. n. female paratype (39 mm) (AMNH_IZC 250210) F–I: A dorsal view B lateral view C dorsal view of cephalon D pleotelson E ventral view of cephalon F pereopod 1 G pereopod 2 H pereopod 6 I pereopod 7.
Figure 4 from: Welicky RL, Hadfield KA, Sikkel PC, Smit NJ (2017) Molecular assessment of three species of Anilocra (Isopoda, Cymothoidae) ectoparasites from Caribbean coral reef fishes, with the description of Anilocra brillae sp. n. ZooKeys 663: 21-43. https://doi.org/10.3897/zookeys.663.11415
Figure 4 - Anilocra haemuli transitional stage (12 mm): A antenna (left) and antennula (right) B maxilla C mandible D maxilliped E article 3 of maxilliped F article 3 of mandibular palp G maxillule H–K pleopods 1–5 respectively.
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These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.