Coral Reefs最新文献_第10页

Structural attributes and macrofaunal assemblages associated with rose gorgonian gardens (Leptogorgia sp. nov.) in Central Chile: opening the door for conservation actions 与智利中部玫瑰芡实花园（Leptogorgia sp.nov.）相关的结构属性和大型底栖动物群落：为保护行动打开大门

IF 3.5 2区生物学

Coral Reefs Pub Date : 2024-02-05 DOI: 10.1007/s00338-023-02463-8

Judith Camps-Castellà, Patricia Prado, José Tena-Medialdea, Antonio Brante, Iván A. Hinojosa

{"title":"Structural attributes and macrofaunal assemblages associated with rose gorgonian gardens (Leptogorgia sp. nov.) in Central Chile: opening the door for conservation actions","authors":"Judith Camps-Castellà, Patricia Prado, José Tena-Medialdea, Antonio Brante, Iván A. Hinojosa","doi":"10.1007/s00338-023-02463-8","DOIUrl":"https://doi.org/10.1007/s00338-023-02463-8","url":null,"abstract":"Gorgonians (like corals) are important habitat-forming organisms that support a diversity of macrofauna. This study explored structural attributes of gorgonian gardens formed by rose gorgonians (Leptogorgia sp. nov.) and associated macrofaunal assemblages in Caleta Pichicuy (Central Chile). Hierarchical sampling was conducted at 20 m depth (maximum colony abundances) in order to assess spatial variability in abundance and colony attributes at two spatial scales (among sites and rocky walls). The abundance and composition of the associated vagile and sessile macrofauna were also examined using univariant (Taxa richness and Shannon index (H’e)) and multivariant approaches and were compared with adjacent bare rocky habitats. Our results showed a high abundance of gorgonians (ca. 28.9–36.5 colonies m−2) compared to other gorgonian gardens in the world. For structural attributes, our results showed smaller colonies with thicker holdfasts in more exposed sites, suggesting the influence of hydrodynamic forces on the colony morphology. Taxa richness and H’e of vagile fauna showed threefold and twofold, respectively, higher values in gorgonian gardens compared to bare walls, but no differences were observed for sessile fauna. In addition, PCoA and PERMANOVA evidenced a distinctive assemblages’ composition between habitats for both vagile and sessile fauna. Correlation analyzes and dbRDA showed, however, little association between structural attributes and associated faunal assemblages (R2 = 0.06, and ca. 3–9.4% of the total variation explained, respectively). Our results constitute the first assessment of structural habitat complexity and accompanying fauna in these gorgonian gardens and establish the baseline for understanding possible future changes associated to human activities.","PeriodicalId":10821,"journal":{"name":"Coral Reefs","volume":"17 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-02-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139756600","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}

引用次数: 0

Microstructure and growth rate variability in a giant clam (Tridacna maxima) from the Lakshadweep Archipelago, India: implications for their use as biological monitors to trace extreme weather events 印度拉克沙德韦普群岛砗磲的微观结构和生长率变化：将其用作追踪极端天气事件的生物监测器的意义

IF 3.5 2区生物学

Coral Reefs Pub Date : 2024-01-29 DOI: 10.1007/s00338-023-02455-8

A. A. Fousiya, Javed N. Malik, Debajyoti Paul, Supriyo Chakraborty, Hema Achyuthan

{"title":"Microstructure and growth rate variability in a giant clam (Tridacna maxima) from the Lakshadweep Archipelago, India: implications for their use as biological monitors to trace extreme weather events","authors":"A. A. Fousiya, Javed N. Malik, Debajyoti Paul, Supriyo Chakraborty, Hema Achyuthan","doi":"10.1007/s00338-023-02455-8","DOIUrl":"https://doi.org/10.1007/s00338-023-02455-8","url":null,"abstract":"The giant clam shells are considered excellent marine bioarchives and have been used in studying current and past climate variabilities. Here, we present the microstructure and growth rate variability of a giant clam shell (T. maxima) collected from the Minicoy Island Lakshadweep, India. We employed FE-SEM, EDX, Raman spectroscopy and petrographic analysis to identify coherent records of the past marine environmental settings and factors controlling growth rates in T. maxima. A consistent growth rate was observed throughout the shell ontology, except for the year 2010, when a relatively slow growth rate was observed due to exceptionally warm water temperatures. Slower microstructural growth is confirmed by an anomalously negative excursion in δ18O values caused by an anomalous sea surface warming event. Such kind of warming was previously documented for the region in 2010 that caused widespread coral bleaching throughout the Lakshadweep Archipelago. Interestingly, our results do not reveal any major growth hiatus in the T. maxima even after experiencing this anomalous thermal stress event, demonstrating the ability of these bivalve shells to reliably reconstruct past environments. These findings advance the potential of combining data from shell microstructure, petrographic, and isotope (δ18Oshell) analyses, to reconstruct the past extreme events preserved in giant clam shells from the Lakshadweep Archipelago.","PeriodicalId":10821,"journal":{"name":"Coral Reefs","volume":"17 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-01-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139588131","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}

引用次数: 0

Functional diversity among coral reef fishes as consumers of ectoparasites 珊瑚礁鱼类作为外寄生虫消费者的功能多样性

IF 3.5 2区生物学

Coral Reefs Pub Date : 2024-01-27 DOI: 10.1007/s00338-023-02459-4

Matthew D. Nicholson, J. Andrés Pagán, Gina C. Hendrick, Paul C. Sikkel

{"title":"Functional diversity among coral reef fishes as consumers of ectoparasites","authors":"Matthew D. Nicholson, J. Andrés Pagán, Gina C. Hendrick, Paul C. Sikkel","doi":"10.1007/s00338-023-02459-4","DOIUrl":"https://doi.org/10.1007/s00338-023-02459-4","url":null,"abstract":"Nearly all organisms must cope with parasitic infestation, and most research on parasite ecology in marine systems has focused on the variety of both direct and indirect impacts that parasites can have on hosts. In coral reef ecosystems, gnathiid isopods are one of the most common ectoparasites of fishes. For individuals infested with gnathiids, there is a heavy reliance on intraspecific mutualisms where specialist species groom or “clean” parasites off host fishes. However, gnathiids spend most of their time free-living and not associated with a host and are thus susceptible to consumption by non-cleaner fish species. Here, we investigated if non-cleaner and facultative (less specialized) cleaner fish consume ectoparasitic gnathiid isopods as often or in similar quantities as dedicated (highly specialized) cleaners. To do so, we sampled the gut contents of 797 fishes, representing 61 species and including both cleaner and non-cleaner fishes, to compare their consumption of gnathiid isopods. We found that although there is some site level variation, cleaner fishes eat significantly more gnathiids, and eat them more frequently, compared to non-cleaner fishes. Our results highlight the importance of both dedicated and facultative cleaners as consumers of ectoparasites and show that their role is unlikely to be supplanted by non-cleaner consumers. Furthermore, we suggest that different cleaner species act as complementary rather than redundant specialists.","PeriodicalId":10821,"journal":{"name":"Coral Reefs","volume":"67 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139588348","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}

引用次数: 0

Extreme low-frequency waves on the Ofu, American Samoa, reef flat 美属萨摩亚奥福岛礁盘上的极端低频海浪

IF 3.5 2区生物学

Coral Reefs Pub Date : 2024-01-22 DOI: 10.1007/s00338-023-02453-w

Olivia M. Cheriton, Curt D. Storlazzi, Ferdinand K. J. Oberle, Kurt J. Rosenberger, Eric K. Brown

引用次数: 0

Habitat and morphological characteristics affect juvenile mortality in five coral reef damselfishes 栖息地和形态特征影响五种珊瑚礁豆娘的幼鱼死亡率

IF 3.5 2区生物学

Coral Reefs Pub Date : 2024-01-21 DOI: 10.1007/s00338-023-02462-9

Eric P. Fakan, Mark I. McCormick, Geoffrey P. Jones, Andrew S. Hoey

{"title":"Habitat and morphological characteristics affect juvenile mortality in five coral reef damselfishes","authors":"Eric P. Fakan, Mark I. McCormick, Geoffrey P. Jones, Andrew S. Hoey","doi":"10.1007/s00338-023-02462-9","DOIUrl":"https://doi.org/10.1007/s00338-023-02462-9","url":null,"abstract":"The abundance and distribution of demersal fishes rely on larvae successfully settling from the pelagic environment to a benthic habitat and their subsequent survival. With high mortality rates during this life stage, settling to a habitat that maximizes survival is critical. However, relationships between settlement choices and subsequent survival are poorly understood and may vary among species with different habitat preferences. To test this, we focused on five congeneric (Pomacentrus) damselfish species that are known to differ in their habitat choices and explored whether habitat associations at settlement influenced survival. Newly settled individuals were tagged and monitored daily for two weeks to estimate natural mortality rates. Morphological attributes of fish and characteristics of settlement habitats, including depth, rugosity, benthic substrata, and local fish assemblages, were used to predict mortality. We found that some species displayed stronger associations with specific benthic substrata at settlement, but contrary to expectations, these selected habitat characteristics were relatively weak predictors of survivorship. Our survival analysis revealed that the best predictors of survivorship were rugosity (P. adelus and P. amboinensis) and two morphological traits, body depth and ocellus size (P. chrysurus and P. adelus). Interestingly, we found that P. moluccensis that settled in areas of high coverage of mounding coral experienced increased mortality. Of the remaining substrata, analysis showed that instead of associating with habitat characteristics enhancing survivorship, individuals tended not to associate with habitats characteristics that increased mortality (e.g., Turbinaria and sand). This study highlights the species-specific drivers of early post-settlement mortality in coral reef fishes.","PeriodicalId":10821,"journal":{"name":"Coral Reefs","volume":"84 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139518116","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}

引用次数: 0

Acclimation period affects tissue condition in the Caribbean staghorn coral, Acropora cervicornis 适应期影响加勒比鹿角珊瑚 Acropora cervicornis 的组织状况

IF 3.5 2区生物学

Coral Reefs Pub Date : 2024-01-20 DOI: 10.1007/s00338-023-02461-w

引用次数: 0

Bio-optical signatures of in situ photosymbionts predict bleaching severity prior to thermal stress in the Caribbean coral species Acropora palmata 原位光合共生体的生物光学特征可预测加勒比珊瑚物种棕榈杉在热应力之前的白化严重程度

IF 3.5 2区生物学

Coral Reefs Pub Date : 2024-01-18 DOI: 10.1007/s00338-023-02458-5

{"title":"Bio-optical signatures of in situ photosymbionts predict bleaching severity prior to thermal stress in the Caribbean coral species Acropora palmata","authors":"","doi":"10.1007/s00338-023-02458-5","DOIUrl":"https://doi.org/10.1007/s00338-023-02458-5","url":null,"abstract":"<h3>Abstract</h3> The identification of bleaching tolerant traits among individual corals is a major focus for many restoration and conservation initiatives but often relies on large scale or high-throughput experimental manipulations which may not be accessible to many front-line restoration practitioners. Here, we evaluate a machine learning technique to generate a predictive model which estimates bleaching severity using non-destructive chlorophyll-a fluorescence photo-physiological metrics measured with a low-cost and open access bio-optical tool. First, a 4-week long thermal bleaching experiment was performed on 156 genotypes of Acropora palmata at a land-based restoration facility. Resulting bleaching responses (percent change in Fv/Fm or Absorbance) significantly differed across the four distinct light-response phenotypes (clusters) generated via a photo-physiology-based dendrogram, indicating strong concordance between fluorescence-based photo-physiological metrics and future bleaching severity. The proportion of thermally tolerant Clade D symbionts also differed significantly across photo-physiology-based dendrogram clusters, linking light-response phenotypes and bleaching response with underlying symbiont species. Next, these correlations were used to train and then test a Random Forest algorithm-based model using a bootstrap resampling technique. Correlation between predicted and actual bleaching responses in test corals was significant (p < 0.0001) and increased with the number of corals used in model training (Peak average R2 values of 0.45 and 0.35 for Fv/Fm and absorbance, respectively). Strong concordance between photo-physiology-based phenotypes and future bleaching severity may provide a highly scalable means for assessing reef corals.","PeriodicalId":10821,"journal":{"name":"Coral Reefs","volume":"69 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139499234","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}

引用次数: 0

How does warmer sea water change the sensitivity of a Mediterranean thermophilic coral after immune-stimulation? 海水变暖如何改变地中海嗜热珊瑚对免疫刺激的敏感性？

IF 3.5 2区生物学

Coral Reefs Pub Date : 2024-01-11 DOI: 10.1007/s00338-023-02454-9

L. Bisanti, C. La Corte, M. Dara, F. Bertini, D. Parrinello, R. Chemello, M. Cammarata, M. G. Parisi

{"title":"How does warmer sea water change the sensitivity of a Mediterranean thermophilic coral after immune-stimulation?","authors":"L. Bisanti, C. La Corte, M. Dara, F. Bertini, D. Parrinello, R. Chemello, M. Cammarata, M. G. Parisi","doi":"10.1007/s00338-023-02454-9","DOIUrl":"https://doi.org/10.1007/s00338-023-02454-9","url":null,"abstract":"Anthropogenic climate change is warming sea water worldwide, pushing the limits of tolerance for marine organisms and driving a decline in biodiversity. The risk of thermal anomalies has increased particularly in the Mediterranean region over the last 30 yrs, where intense warming has been identified as one of the main stressors in coastal regions. To determine the influence of warmer conditions on the immunity of an endemic Mediterranean coral species, different immune activity parameters were compared in response to elevated temperature (~ 28 °C) and the presence of a pathogen-associated molecular pattern—Escherichia coli lipopolysaccharide (LPS)—as an elicitor of the innate immune response of Astroides calycularis. Immune parameters, which included phenoloxidase-like, glutathione peroxidase, lysozyme-like, alkaline phosphatase, and esterase enzyme activity, were measured over time after LPS balneation (0-, 12-, 48-, and 120 h time point). All five enzymes demonstrated constant values under environmental conditions (~ 23 °C), indicating a constituent activity. LPS at environmental temperature induced significant upregulation immediately after exposure (0 h-time point), demonstrating an immune response to the pathogen elicitor. Under warmer conditions (~ 28 °C), constituent values increased over time, indicating a shift in the immune strategy to maintain homeostasis. However, warmer sea water, within the summer range experienced by this coral species, impaired the immune response to LPS, delaying it over time. These changes in immune strategy indicate that temperature affects coral immunity and, in thermophilic A. calycularis, results in an energy trade-off that could maintain its health-state through suboptimal conditions during multiple perturbations, such as summertime diseases.","PeriodicalId":10821,"journal":{"name":"Coral Reefs","volume":"26 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139420547","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}

引用次数: 0

Correction to: Maximal species richness in Conus: diversity, diet and habitat on reefs of northeast Papua New Guinea 更正：孔雀鱼的最大物种丰富度：巴布亚新几内亚东北部珊瑚礁上的多样性、食物和栖息地

IF 3.5 2区生物学

Coral Reefs Pub Date : 2024-01-10 DOI: 10.1007/s00338-023-02452-x

A. J. Kohn

引用次数: 0

Macroalgae and zoanthids require physical contact to harm corals in Southwestern Atlantic 西南大西洋的大型藻类和藻类需要身体接触才能伤害珊瑚

IF 3.5 2区生物学

Coral Reefs Pub Date : 2024-01-08 DOI: 10.1007/s00338-023-02457-6

Ana Carolina Grillo, Edson Aparecido Vieira, Guilherme Ortigara Longo

{"title":"Macroalgae and zoanthids require physical contact to harm corals in Southwestern Atlantic","authors":"Ana Carolina Grillo, Edson Aparecido Vieira, Guilherme Ortigara Longo","doi":"10.1007/s00338-023-02457-6","DOIUrl":"https://doi.org/10.1007/s00338-023-02457-6","url":null,"abstract":"Space can be limited in reef ecosystems leading to competitive interactions among sessile organisms. Some competitive mechanisms can require physical contact while others operate with proximity between organisms. We investigated how the scleractinian coral Siderastrea stellata and the hydrocoral Millepora alcicornis respond to physical contact and proximity to the macroalga Dictyopteris delicatula and the zoanthid Palythoa caribaeorum, common pairs of interactions in Southwestern Atlantic reefs in Northeast Brazil. We held two colonies of the same species within the same tank, one in physical contact and the other within 5 cm of the competitor for four days with macroalgae and three days with the zoanthid. We monitored the corals for 26 days taking photographs and measuring their photosynthetic efficiency (PE) at the point of contact and on the side where competitors were in proximity. Corals were only affected when physically contacted by the competitors, with the macroalga causing a slight damage on M. alcicornis and almost no effect on S. stellata. Contacts with P. caribaeorum reduced the PE and caused tissue discoloration in both corals. M. alcicornis recovered after 26 days but the contacted areas of S. stellata remained discolored and with low PE. Macroalgae and zoanthids required physical contact to damage corals, with the zoanthid causing more damage than the macroalgae. These results suggest that if local and global stressors make corals weaker competitors (e.g. warming) or favor macroalgae and zoanthid growth (e.g. nutrients), corals could be replaced by either of these organisms affecting ecosystem structure and functioning.","PeriodicalId":10821,"journal":{"name":"Coral Reefs","volume":"20 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-01-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139397728","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}

引用次数: 0