Coral Reefs最新文献

{"title":"Insights into the molecular mechanisms underlying the different heat tolerance of the scleractinian coral Pavona decussata","authors":"Man Zhang, Shan Huang, Li Luo, Xiaopeng Yu, Hao Wang, Kefu Yu, Shengping Zhong","doi":"10.1007/s00338-024-02478-9","DOIUrl":"https://doi.org/10.1007/s00338-024-02478-9","url":null,"abstract":"<p>The increasing threat of ocean warming has led to the more frequent endangerment of coral reefs, including the heat-tolerant <i>Pavona decussata</i>. To shed light on the molecular mechanisms involved in the response of coral to ocean warming, we investigated the gene expression profiles of <i>P. decussata</i> after natural thermal stress. Using PacBio Sequel II sequencing technology, we obtained relatively complete transcriptome data for <i>P. decussata</i> and then analyzed its gene expression quantitatively with Illumina RNA-seq technology. We acquired information on gene function, structure, and expression profile from coral host and zooxanthellae. Analysis of Illumina sequencing data revealed that unbleached coral host might rely on the active utilization of amino acids to maintain a stable living condition based on the tricarboxylic acid cycle under high temperature stress, and that zooxanthellae might benefit from ammonium produced by coral host. Moreover, the downregulation of unbleached coral host gene expression in innate immune pathways centered on the transcription factors that heat shock factor and nuclear factor (NF)-κB, as well as the tyrosine kinase pathway, might be crucial for maintaining the equilibrium of the zooxanthellae under thermal stress. Thus, the differences in these molecular mechanisms could determine, to some extent, whether coral host can maintain a symbiotic relationship with algae under heat stress. This study elucidated the molecular mechanisms underlying differences in thermal tolerance within <i>P. decussata</i> species and supported further theoretical basis in coral molecular biology and ecological conservation, which enhance our comprehension of coral responses to future climate change.</p>","PeriodicalId":10821,"journal":{"name":"Coral Reefs","volume":"48 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140033620","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mesophotic zone as refuge: acclimation and in-depth proteomic response of yellow gorgonians in the Mediterranean sea","authors":"Anaïs Beauvieux, Bastien Mérigot, Jérémy Le Luyer, Jean-Marc Fromentin, Nathan Couffin, Adrien Brown, Olivier Bianchimani, Régis Hocdé, Didier Aurelle, Jean-Baptiste Ledoux, Fabrice Bertile, Quentin Schull","doi":"10.1007/s00338-024-02477-w","DOIUrl":"https://doi.org/10.1007/s00338-024-02477-w","url":null,"abstract":"<p>The intensification of warming-induced mass-mortalities in invertebrate populations including in temperate regions is a critical global issue. Mesophotic zones (30–150 m depth) have been suggested as potential refuges from climate change for gorgonian populations, offering hope for reseeding damaged shallow populations. Using a proteomic approach, we investigated the responses and acclimatization ability of the yellow gorgonian <i>Eunicella cavolini</i> along an environmental gradient following reciprocal transplantations between shallow (20 m) and mesophotic (70 m) zones. Our findings indicate that yellow gorgonians from mesophotic waters exhibit a greater plasticity when transplanted to shallow waters, compared to shallow gorgonians transplanted to the mesophotic zone at 70 m. Transplanted colonies from mesophotic to shallow waters showed an increasing level of proteins involved in immune response but displayed no signs of necrosis or apoptosis, highlighting the acclimation potential of mesophotic populations. These results suggest that <i>Eunicella cavolini</i> populations may exhibit physiological plasticity in response to future climate change, allowing natural colonization from mesophotic populations. This analysis offers valuable insights into gorgonians' cellular and molecular responses to environmental changes.</p>","PeriodicalId":10821,"journal":{"name":"Coral Reefs","volume":"35 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140033773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Global patterns of herbivorous reef fish productivity: the role of Prionurus laticlavius in the Galápagos","authors":"Sterling B. Tebbett, Helen F. Yan, Lucas L. Lutzenkirchen, Alexandre C. Siqueira, David R. Bellwood","doi":"10.1007/s00338-024-02473-0","DOIUrl":"https://doi.org/10.1007/s00338-024-02473-0","url":null,"abstract":"<p>Herbivorous fishes play important roles on coral reefs, acting as key trophic conduits of primary productivity. Whilst these roles are widely appreciated on tropical reefs, the relative contribution of fishes which inhabit marginal reefs, such as <i>Prionurus</i> surgeonfishes, is not well understood. Here, we examine the extent to which herbivorous fish productivity varies amongst global ecoregions, specifically considering the relative contribution of <i>Prionurus</i>. We also compare the productivity of <i>Prionurus</i> to that of other herbivorous fishes in relation to water temperatures. Our analysis revealed that the Eastern Galápagos Islands support the highest levels of herbivorous fish productivity recorded to date, with <i>Prionurus laticlavius</i> accounting for over 94% of that productivity. Moreover, <i>Prionurus</i> productivity peaked at relatively cool water temperatures (~ 22–25 °C), although patterns were driven by <i>P. laticlavius</i>. These results highlight the exceptional herbivorous fish productivity in the Eastern Galápagos Islands and the disproportionate contribution of <i>P. laticlavius</i> in this locality.</p>","PeriodicalId":10821,"journal":{"name":"Coral Reefs","volume":"135 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140002816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Juvenile octocorals acquire similar algal symbiont assemblages across depths","authors":"Ronen Liberman, Christian R. Voolstra, Benjamin C. C. Hume, Yehuda Benayahu","doi":"10.1007/s00338-024-02470-3","DOIUrl":"https://doi.org/10.1007/s00338-024-02470-3","url":null,"abstract":"<p>Establishment of the coral–algal symbiosis begins during early ontogeny when juveniles acquire a mix of algae from their environment that often differs from the adults’ algal assemblages. Despite the importance of the type of Symbiodiniaceae to this symbiosis, it is largely unknown how coral host identity and environment affect symbiosis establishment and is affected by the genetic composition of the symbionts. Here, we reciprocally transplanted planulae of the octocoral <i>Rhytisma fulvum</i> (Forskål, 1775) across depths and monitored the algal assemblages in the developing juveniles for 11 months. We then compared these to adult assemblages using ITS2 metabarcoding. Juveniles were consistently dominated by <i>Symbiodinium</i>, in addition to multiple <i>Cladocopium</i> species, which shifted in dominance with the juvenile age but maintained high similarity across depths. The type of Symbiodiniaceae environmentally available thus likely contributes to the algal symbionts that are initially acquired, while host identity may play a significant role in selecting for symbionts that are maintained during juvenile development.</p>","PeriodicalId":10821,"journal":{"name":"Coral Reefs","volume":"68 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139968198","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Three-dimensional morphological variation and physical functionality of Caribbean corals","authors":"Sergio D. Guendulain-Garcia, Anastazia T. Banaszak, Lorenzo Álvarez-Filip, Andrea M. Quattrini, Andrés Lopez-Perez","doi":"10.1007/s00338-024-02472-1","DOIUrl":"https://doi.org/10.1007/s00338-024-02472-1","url":null,"abstract":"<p>Reef functionality depends on the coral community’s species composition, abundance, and on the capacity of corals to build carbonate structures. Nevertheless, the coral’s contribution to functionality remains hidden in species morphological variation displayed. Here, we use three-dimensional (3D) models to estimate the morpho-functional space of 14 Caribbean coral species by combining information from five morphological traits (sphericity, convexity, packing, first moment of surface area, and first moment of volume). Based on a principal component analysis, we selected the trait that captured most of the coral morphological variation to address the effect of colony size on structural complexity, shelter volume, and efficiency of resource use in terms of colony volume and calcium carbonate (CaCO₃) investment. At the species level, structural complexity increased as a function of coral colony size in branching, digitate, and columnar coral species. Shelter volume increased with colony size in all species; however, branching species such as <i>Acropora palmata</i> not only provide more shelter volume than species with simpler morphologies, but they do so more efficiently, investing less colony volume and CaCO₃ mass for attaining the same shelter volume. Tracking changes in coral morphologies and colony size can improve our ability to predict functional repercussions from modifications to coral assemblages that are caused by, for example, disease outbreaks or environmental disturbances.</p>","PeriodicalId":10821,"journal":{"name":"Coral Reefs","volume":"30 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139968007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Studying functions on coral reefs: past perspectives, current conundrums, and future potential","authors":"","doi":"10.1007/s00338-024-02474-z","DOIUrl":"https://doi.org/10.1007/s00338-024-02474-z","url":null,"abstract":"<h3>Abstract</h3> <p>Function-based studies have opened a new chapter in our understanding of coral reefs. Unfortunately, we are opening this chapter as the world’s reefs rapidly transform. In this context, one of the most important roles of function-based studies is to inform coral reef conservation. At this critical juncture, we have a chance to reflect on where we have come from, and where we are going, in coral reef functional ecology, with specific consideration of what this means for our approaches to conserving reefs. As focal examples, we examine the role of corals on reefs, and the practice of culling crown-of-thorns starfish, from a functional perspective. We also consider how the papers in this special issue build on our current understanding. Ultimately, we highlight how robust scientific investigation, based on an understanding of ecosystem functions, will be key in helping us navigate reefs through the current coral reef crisis.</p>","PeriodicalId":10821,"journal":{"name":"Coral Reefs","volume":"14 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139954678","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cryptic diversification, phenotypic plasticity, and host specialization in a sponge-dwelling goby","authors":"","doi":"10.1007/s00338-024-02466-z","DOIUrl":"https://doi.org/10.1007/s00338-024-02466-z","url":null,"abstract":"<h3>Abstract</h3> <p>Coral reefs harbor 30% of oceanic biodiversity, but many species remain undiscovered. Indeed, coral reef taxonomic inventories are heavily skewed toward large, conspicuous organisms, leaving numerous smaller, cryptic species undescribed. Cryptobenthic reef fishes, such as gobies, can speciate rapidly due to short lifespans and limited dispersal, and ecological specialization may facilitate their diversification. Here, we examine whether habitat specialization correlates with genetic and phenotypic divergence in <em>Risor ruber</em>, a sponge-dwelling goby distributed across the western Atlantic Ocean. By integrating phylogenetic evidence, morphometrics, and network analysis, we identify seven distinct genetic lineages within <em>Risor</em> and reveal concordant patterns of <em>Risor</em>–sponge specialization. Despite the absence of lineage-specific morphologies, morphological traits are associated with sponge hosts, indicating high phenotypic plasticity within lineages. Two <em>Risor</em> lineages specialize on a single host sponge across the Caribbean, while five lineages are generalists. Finally, high modularity across <em>Risor</em>–sponge networks provides further evidence that ecological specialization contributes to <em>Risor</em> diversification. Given the rapid changes in coral reef benthic communities, habitat specialists are more likely to lose their primary habitat and face extinction. Documenting and understanding genetic diversification is imperative, especially in understudied, vulnerable organisms such as cryptobenthic reef fishes.</p>","PeriodicalId":10821,"journal":{"name":"Coral Reefs","volume":"9 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139954672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"2bRAD reveals fine-scale genetic structuring among populations within the Mediterranean zoanthid Parazoanthus axinellae (Schmidt, 1862)","authors":"Marko Terzin, Adriana Villamor, Lorenzo Marincich, Kenan Matterson, Maria Grazia Paletta, Valentina Bertuccio, Giorgio Bavestrello, Lisandro Benedetti Cecchi, Elisa Boscari, Carlo Cerrano, Giovanni Chimienti, Leonardo Congiu, Simonetta Fraschetti, Francesco Mastrototaro, Massimo Ponti, Roberto Sandulli, Eva Turicchia, Lorenzo Zane, Marco Abbiati, Federica Costantini","doi":"10.1007/s00338-023-02456-7","DOIUrl":"https://doi.org/10.1007/s00338-023-02456-7","url":null,"abstract":"<p>The zoanthid <i>Parazoanthus axinellae</i> (Schmidt, 1862) is a widespread coral species in the Mediterranean coralligenous assemblages where two morphotypes are found: Slender and Stocky, differing in size, color, and preferred substrate. Due to these marked differences, Slender and Stocky morphotypes were hypothesized to be two species. Here, we used 2bRAD to obtain genome‐wide genotyped single nucleotide polymorphisms (SNPs) to investigate the genetic differentiation between Slender and Stocky morphs, as well as their population structure. A total of 101 specimens of <i>P. axinellae</i> were sampled and genotyped from eight locations along the Italian coastline. In four locations, samples of the two morphotypes were collected in sympatry. 2bRAD genome-wide SNPs were used to assess the genetic divergence between the two morphotypes (1319 SNPs), and population connectivity patterns within Slender (1926 SNPs) and Stocky (1871 SNPs) morphotypes. Marked and consistent differentiation was detected between Slender and Stocky morphotypes. The widely distributed Slender morphotype showed higher population mixing patterns, while populations of the Stocky morphotype exhibited a stronger genetic structure at a regional scale. The strong genetic differentiation observed between <i>P. axinellae</i> Slender and Stocky morphotypes provides additional evidence that these morphs could be attributed to different species, although further morphological and ecological studies are required to validate this hypothesis. Our study highlights the importance of resolving phylogenetic and taxonomic disparities within taxonomically problematic groups, such as the <i>P. axinellae</i> species complex, when performing genetic connectivity studies for management and conservation purposes.</p><h3 data-test=\"abstract-sub-heading\">Graphical Abstract</h3><p>Schematic overview of the main genetic structuring patterns observed in this study. Coral polyps were colored to intuitively associate the reader to <i>Parazoanthus axinellae</i> morphotypes, with orange tones being attributed to the Stocky morphotype, and yellow tones to the Slender morphotype. Bidirectional arrows represent gene flow between coral individuals, with the number and thickness of arrows corresponding to the intensity of gene flow rates. The red dashed line represents the potential reproductive isolation between Slender and Stocky morphs</p>\u0000","PeriodicalId":10821,"journal":{"name":"Coral Reefs","volume":"61 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139921515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Simulated connectivity of crown-of-thorns starfish around Ashizuri-Uwakai National Park (western Japan) based on a high-resolution hydrodynamic modeling","authors":"Hiroya Abe, Hiroya Yamano","doi":"10.1007/s00338-024-02471-2","DOIUrl":"https://doi.org/10.1007/s00338-024-02471-2","url":null,"abstract":"<p>Outbreaks of crown-of-thorns starfish (COTS) pose a major threat to coral reefs in the Ashizuri-Uwakai National Park, Japan, which is partially affected by the Kuroshio Current. The purpose of this study was to identify the upstream areas of the Kuroshio significantly contributing to the supply of larvae to this area, where the larvae are most likely to reach within the Ashizuri-Uwakai area (inter-connectivity), and to clarify the connectivity within the park (intra-connectivity). Using a hydrodynamic model based on a 12-year dataset with a high spatial resolution (ca. 2 km), this study evaluated the transport and dispersion processes into and within the region, although the proportion of particles reaching the Ashizuri-Uwakai area the major sources were Tanegashima and Yakushima islands and the east coast of Kyushu. Grid cells with a high supply from these source areas were identified within Ashizuri-Uwakai and quantitatively shown to have high sink strength in the southwestern and cape areas. We were also able to show where particles released within Ashizuri-Uwakai tend to accumulate. Since locations with high sink strength generally coincided with diving sites and areas where conservation activities have been conducted, strengthening conservation activities in these locations can be considered to be effective in controlling outbreaks of COTS.</p>","PeriodicalId":10821,"journal":{"name":"Coral Reefs","volume":"33 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139921514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Anvil use by three wrasse species: Halichoeres hortulanus, Thalassoma jansenii, and Thalassoma lunare","authors":"Siddhi Jaishankar, Radhika Nair, Teresa Alcoverro, Rohan Arthur","doi":"10.1007/s00338-024-02467-y","DOIUrl":"https://doi.org/10.1007/s00338-024-02467-y","url":null,"abstract":"<p>Over the past few decades, tool use has been described in a variety of animals across taxa. However, there are relatively limited reports and studies of tool use in marine environments. Among marine fish though, labrids have been reported to be proficient at using tools. Here, we describe the first observations of tool use in two species of tropical wrasses—<i>Halichoeres hortulanus</i> (checkerboard wrasse) and <i>Thalassoma jansenii</i> (Jansen’s wrasse)—and the first report of tool use from the wild for the wrasse <i>Thalassoma lunare</i> (Moon wrasse). These observations were made incidentally as part of size-specific predation assays for a small burrow-dwelling sea urchin <i>(Echinostrephus molaris)</i> in the Lakshadweep Archipelago, Indian Ocean. We documented multiple instances of anvil use by the wrasses <i>H. hortulanus</i>, and <i>T. jansenii</i>, and one instance of anvil use by <i>T. lunare</i>. All three species were recorded carrying the assay urchins to a nearby coral or benthic substrate and striking them repeatedly to break off their spines and crack their tests before consuming them. The behaviour was observed multiple times in different wrasse individuals. Also, sea urchin test size was a good predictor of the size of the fish that preyed on them. As naturalists spend more time observing fish in their natural environment, records of tool use in fish are increasing. Often these observations are incidental, yet documenting them carefully is critical, so we can ask larger questions about the evolution and development of animal intelligence. This study adds to observations of predation-associated tool use by fishes expanding reports of this behaviour taxonomically as well as geographically.</p>","PeriodicalId":10821,"journal":{"name":"Coral Reefs","volume":"18 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-02-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139756624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}