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The intensity of a field simulated marine heat wave differentially modulates the transcriptome expression of Posidonia oceanica from warm and cold environments 野外模拟海洋热浪的强度会对来自温暖和寒冷环境的 Posidonia oceanica 的转录组表达产生不同的调节作用
IF 2.4 3区 生物学
Marine Biology Pub Date : 2024-09-12 DOI: 10.1007/s00227-024-04501-7
Patrizia Stipcich, Giulia Ceccherelli, Lázaro Marín-Guirao, Jessica Pazzaglia, Alex Santillán-Sarmiento, Gabriele Procaccini
{"title":"The intensity of a field simulated marine heat wave differentially modulates the transcriptome expression of Posidonia oceanica from warm and cold environments","authors":"Patrizia Stipcich, Giulia Ceccherelli, Lázaro Marín-Guirao, Jessica Pazzaglia, Alex Santillán-Sarmiento, Gabriele Procaccini","doi":"10.1007/s00227-024-04501-7","DOIUrl":"https://doi.org/10.1007/s00227-024-04501-7","url":null,"abstract":"<p>Marine Heat Waves (MHWs) occurrence has been increasing in the Mediterranean Sea. The effects of field simulated MHWs of different intensity (medium and high temperature) on the transcriptome expression of the endemic seagrass <i>Posidonia oceanica</i> were evaluated considering different origins of the plant. The aim of the study was reached through a common garden transplant experiment in the North-west of Sardinia (Italy), where two <i>P. oceanica</i> meadows characterized by different thermal regimes (cold and warm) were chosen. MHWs were simulated in front of a power plant, that creates a natural laboratory by releasing warm water in the sea. Differential gene expression and GO enrichment analyses highlighted differences in the transcriptomic profiles of plants from cold and warm environments suggesting that the MHWs induced different levels of stress due to different tolerance to the heat event. Plants from both origins activated processes to achieve protein homeostasis, but only cold plants activated an antioxidant defense and altered sugar metabolism, both indicators of heat stress. Within plants of the same origin, a different response to MHW intensity was also detected: while warm plants showed the most complex response at high temperature rather than at medium temperature, cold plants seemed to better cope with the medium temperature intensity rather than with high temperature.</p>","PeriodicalId":18365,"journal":{"name":"Marine Biology","volume":"27 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142185495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Feeding ecology of the urchin symbiont Dactylopleustes yoshimurai (Amphipoda) revealed by DNA metabarcoding 通过 DNA 代谢编码揭示海胆共生体 Dactylopleustes yoshimurai(两栖动物)的摄食生态学
IF 2.4 3区 生物学
Marine Biology Pub Date : 2024-09-09 DOI: 10.1007/s00227-024-04507-1
Masafumi Kodama, Ryoga Yamazaki, Jun Hayakawa, Gakuto Murata, Ko Tomikawa, Tomohiko Kawamura, Gen Kume, Toru Kobari
{"title":"Feeding ecology of the urchin symbiont Dactylopleustes yoshimurai (Amphipoda) revealed by DNA metabarcoding","authors":"Masafumi Kodama, Ryoga Yamazaki, Jun Hayakawa, Gakuto Murata, Ko Tomikawa, Tomohiko Kawamura, Gen Kume, Toru Kobari","doi":"10.1007/s00227-024-04507-1","DOIUrl":"https://doi.org/10.1007/s00227-024-04507-1","url":null,"abstract":"<p>The nature of symbiotic relationships between organisms can be difficult to assess and may range from commensalism, to mutualism, and parasitism. Trophic linkage and feeding ecology are essential to disentangle symbiont-host relationships/interactions. Amphipods of the genus <i>Dactylopleustes</i> are known as urchin symbionts. Though their ecology remains largely unknown, <i>Dactylopleustes</i> was recently reported to aggregate on diseased hosts, suggesting that <i>Dactylopleustes</i> feeds on diseased urchins’ tissues and uses urchins as both a habitat and prey. We investigated by DNA metabarcoding analyses, the feeding ecology of <i>Dactylopleustes yoshimurai</i> in relation to growth and disease status of the host (<i>Strongylocentrotus intermedius</i>). Contrary to our hypothesis, sequence reads from the gut contents were dominated by planktonic copepods regardless of body size or host disease status. These results suggest that they mainly feed on copepod fecal pellets deposited on sediments, and do not have a strong trophic linkage with their host. Large individuals on diseased urchins feed more on urchins than those on healthy urchins. However, their main prey still remains copepods, implying that host disease has a limited effect on the feeding behavior. In conclusion, our study indicates that this species is mainly commensal, but also may parasitize its host depending on the situation.</p>","PeriodicalId":18365,"journal":{"name":"Marine Biology","volume":"33 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142185339","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Biodiversity of octopuses in the Americas 美洲章鱼的生物多样性
IF 2.4 3区 生物学
Marine Biology Pub Date : 2024-09-09 DOI: 10.1007/s00227-024-04489-0
Roberto González-Gómez, Otilio Avendaño, Irene de los Angeles Barriga-Sosa, Penélope Bastos, Claudia Caamal-Monsreal, Gabriela Castillo-Estrada, Celso Cedillo-Robles, Adam Daw, Mariana Díaz-Santana-Iturrios, Gabriela Galindo-Cortes, Jürgen Guerrero-Kommritz, Manuel Haimovici, Christian M. Ibáñez, María de Lourdes Jiménez-Badillo, Paul Larson, Tatiana Leite, Françoise D. Lima, Unai Markaida, César Meiners-Mandujano, Piedad S. Morillo-Velarde, Nicolás Ortiz, M. Cecilia Pardo-Gandarillas, Ricardo Pliego-Cárdenas, María Edith Ré, Brian Siegel, Brian Urbano, Erica A. G. Vidal, Ian G. Gleadall
{"title":"Biodiversity of octopuses in the Americas","authors":"Roberto González-Gómez, Otilio Avendaño, Irene de los Angeles Barriga-Sosa, Penélope Bastos, Claudia Caamal-Monsreal, Gabriela Castillo-Estrada, Celso Cedillo-Robles, Adam Daw, Mariana Díaz-Santana-Iturrios, Gabriela Galindo-Cortes, Jürgen Guerrero-Kommritz, Manuel Haimovici, Christian M. Ibáñez, María de Lourdes Jiménez-Badillo, Paul Larson, Tatiana Leite, Françoise D. Lima, Unai Markaida, César Meiners-Mandujano, Piedad S. Morillo-Velarde, Nicolás Ortiz, M. Cecilia Pardo-Gandarillas, Ricardo Pliego-Cárdenas, María Edith Ré, Brian Siegel, Brian Urbano, Erica A. G. Vidal, Ian G. Gleadall","doi":"10.1007/s00227-024-04489-0","DOIUrl":"https://doi.org/10.1007/s00227-024-04489-0","url":null,"abstract":"<p>A comprehensive survey of the octopus fauna around the Americas is presented to facilitate and accelerate the assessment of a full understanding of American octopus biodiversity. Brief accounts are provided summarizing research efforts on octopus species taxonomy, diversity and distribution in different regions of North and South America. <i>Octopus americanus</i> and <i>O. insularis</i> are compared and clearly distinguished from each other and from the closely-related European species, <i>O. vulgaris</i>. The use of genus names <i>Paroctopus</i> and <i>Pinnoctopus</i> is clarified. Included is a discussion of the recent application of genus name <i>Paroctopus</i> to warm-temperate and tropical species of small size, along with a cautionary note about species identifications in the light of past errors in misassigning large-to-giant cold-water species to genus <i>Paroctopus</i>. Related to problems with identifying species of <i>Paroctopus</i>, there is an appended note concerning misidentifications and the importance of thorough species descriptions to obtain species information at the levels of both phenotype and genotype. A lectotype is formally designated for <i>Bathypolypus arcticus</i> (Prosch, 1849); and the status of so-called ‘<i>Octopus giganteus</i>’ is reviewed briefly. A supplementary online database, AmeriCeph, provides basic information about all known octopus species of the Americas, including the institutional location of type material and the identification of voucher specimens and their depositories. DNA sequences registered in this database are not all fully compatible with barcoding standards. However, a subset of DNA sequences conforming to strict barcode identifications is provided in a second supplementary table, providing barcode sequences directly applicable also to improving standards of seafood traceability. This in turn contributes to building sustainability of exploited octopus fisheries stocks and identification of species suitable for aquaculture trials to meet the increasing commercial demand for octopus worldwide.</p>","PeriodicalId":18365,"journal":{"name":"Marine Biology","volume":"13 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142185338","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Influence of wind on kittiwake Rissa tridactyla flight and offshore wind turbine collision risk 风对海鸟 Rissa tridactyla 飞行和海上风力涡轮机碰撞风险的影响
IF 2.4 3区 生物学
Marine Biology Pub Date : 2024-09-09 DOI: 10.1007/s00227-024-04508-0
Jacob G. Davies, Philipp H. Boersch-Supan, Gary D. Clewley, Elizabeth M. Humphreys, Nina J. O’Hanlon, Judy Shamoun-Baranes, Chris B. Thaxter, Ewan Weston, Aonghais S. C. P. Cook
{"title":"Influence of wind on kittiwake Rissa tridactyla flight and offshore wind turbine collision risk","authors":"Jacob G. Davies, Philipp H. Boersch-Supan, Gary D. Clewley, Elizabeth M. Humphreys, Nina J. O’Hanlon, Judy Shamoun-Baranes, Chris B. Thaxter, Ewan Weston, Aonghais S. C. P. Cook","doi":"10.1007/s00227-024-04508-0","DOIUrl":"https://doi.org/10.1007/s00227-024-04508-0","url":null,"abstract":"<p>Offshore windfarms are a potential threat to seabirds, partly due to collision risk with turbine blades. Wind influences the mode, height and speed of seabird flight, and therefore the risk of collision with turbines. We investigated how wind influences the flight of black-legged kittiwakes <i>Rissa tridactyla</i>, a gull of conservation concern, in order to incorporate these findings into collision risk estimates and identify mitigation measures. We used GPS telemetry data (23rd June to 10th August 2021) from 20 kittiwakes breeding in Aberdeenshire, UK (57.385°N, 1.868°W) to estimate the effect of wind on behavioural state, proportion of flight at collision risk height, probability of collision when within the rotor-swept zone, and overall collision risk. We found that as windspeed increased, kittiwakes commuted less and rested more. With increasing windspeed, kittiwakes spent a considerably smaller proportion of their flight time in the rotor-swept zone, but had a slightly higher probability of collision while in it. Uncertainty was high for most relationships between windspeed and kittiwake flight metrics. The overall effect of increasing windspeed on collision risk was negative, although we did not model avoidance rate. Effects of windspeed on collision risk were largely mediated through effects on commuting flight, and contingent on wind direction. Collision risk estimates incorporating the effects of windspeed may have greater precision and accuracy, but considerable uncertainty in windspeed-flight parameter relationships remains. Therefore although kittiwake collision risk may be mitigated by raising the ‘cut-in’ windspeed above which wind turbines generate power, the magnitude of this effect is uncertain.</p>","PeriodicalId":18365,"journal":{"name":"Marine Biology","volume":"8 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142185340","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Evidence of colony- and individual-level variation in habitat usage of Atlantic Puffins (Fratercula arctica) 大西洋海雀(Fratercula arctica)栖息地利用的群体和个体水平差异证据
IF 2.4 3区 生物学
Marine Biology Pub Date : 2024-09-03 DOI: 10.1007/s00227-024-04502-6
Ian R. Cleasby, Rob Hughes, Barbara J. Morrissey, Sophie Elliott, Fabrice le Bouard, Fritha West, Ellie Owen
{"title":"Evidence of colony- and individual-level variation in habitat usage of Atlantic Puffins (Fratercula arctica)","authors":"Ian R. Cleasby, Rob Hughes, Barbara J. Morrissey, Sophie Elliott, Fabrice le Bouard, Fritha West, Ellie Owen","doi":"10.1007/s00227-024-04502-6","DOIUrl":"https://doi.org/10.1007/s00227-024-04502-6","url":null,"abstract":"<p>Seabirds are among the most threatened avian taxa. Effective seabird conservation requires an understanding of both seabird distributions and habitat usage. Species distribution models can help identify important areas for protection and manage threats to seabird populations. However, populations of the same species may differ in their response to the environment, reducing the transferability of such models. In addition, individual-level responses to habitat may vary both within and between animal populations. Atlantic Puffins (<i>Fratercula arctica</i>) are classed as vulnerable to global extinction and a UK red-listed bird of concern. Consequently, a greater understanding of their at-sea habitat usage is a conservation priority. We used GPS tracking data from four UK Puffin colonies to construct species distribution models and examine colony- and individual-level variation in habitat usage in response to a suite of environmental covariates (chlorophyll-a concentration, sea surface temperature (SST), water depth, seabed slope, current velocity, and SST front gradient). The most consistent colony-level response was a negative association between habitat usage and chlorophyll-a concentration (observed at 3 out of 4 colonies). Responses to other environmental covariates were less consistent across colonies. Among individual variation in foraging range per trip was low, but we observed individual variation in habitat usage in response to almost all environmental covariates examined. Within each colony, we also identified distinct clusters of space-use across different groups of individuals. Different Puffin colonies and individuals are not ecologically equivalent. Therefore, perturbations to the marine environment are likely to have disproportionate effects on certain colonies and/or individuals. Incorporating colony- and individual-level variation will thus be essential for marine conservation efforts.</p>","PeriodicalId":18365,"journal":{"name":"Marine Biology","volume":"41 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142224368","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Growth rates of five coral species across a strong environmental gradient in the Colombian Caribbean 哥伦比亚加勒比海强烈环境梯度中五个珊瑚物种的生长率
IF 2.4 3区 生物学
Marine Biology Pub Date : 2024-08-30 DOI: 10.1007/s00227-024-04511-5
Matteo Bravo, Verena Schoepf
{"title":"Growth rates of five coral species across a strong environmental gradient in the Colombian Caribbean","authors":"Matteo Bravo, Verena Schoepf","doi":"10.1007/s00227-024-04511-5","DOIUrl":"https://doi.org/10.1007/s00227-024-04511-5","url":null,"abstract":"<p>Coral calcification is critical for reef growth and highly dependent on environmental conditions. Yet, little is known about how corals calcify under sub-optimal conditions (e.g., turbid waters, high nutrients, sedimentation) or coral growth in understudied regions such as the Colombian Caribbean. We therefore assessed the calcification and linear extension rates of five coral species across an inshore-to-offshore gradient in the Colombian Caribbean. A suite of environmental variables (temperature, light intensity, visibility, pH, nutrients) measured during the rainy season (May – November 2022) demonstrated more sub-optimal conditions inshore compared to offshore. Across all species, calcification rates were 59% and 37% lower inshore compared to the offshore and midshore sites, respectively. Across all sites, massive corals calcified up to 92% more than branching species but were more susceptible to heat stress and sub-optimal inshore conditions. However, branching species had reduced survival due to extreme climatic events (i.e., bleaching, hurricanes). A comparison with published rates for the wider Caribbean revealed that massive species in the Colombian Caribbean grow up to 11 times more than those in the wider Caribbean while branching species generally have similar growth rates, but this finding may have been influenced by fragment size and/or heat stress. Our findings indicate that present-day environmental conditions, coupled with more frequent extreme climatic events, will favor massive over branching species in midshore areas of the Colombian Caribbean. This suggests a possible shift towards faster calcifying massive species in future coral communities, possibly exacerbating the ongoing regional decline in branching species over the last decades.</p>","PeriodicalId":18365,"journal":{"name":"Marine Biology","volume":"22 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142227746","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Nursery provision of red-algal habitats in temperate Algoa Bay, South Africa 南非温带阿尔戈阿湾红藻栖息地的苗圃供应
IF 2.4 3区 生物学
Marine Biology Pub Date : 2024-08-29 DOI: 10.1007/s00227-024-04506-2
N. C. James, A. G. Jacobs, M. Gayiza, L. R.D. Human, P. P. Steyn, A. T. Bernard, G. M. Rishworth
{"title":"Nursery provision of red-algal habitats in temperate Algoa Bay, South Africa","authors":"N. C. James, A. G. Jacobs, M. Gayiza, L. R.D. Human, P. P. Steyn, A. T. Bernard, G. M. Rishworth","doi":"10.1007/s00227-024-04506-2","DOIUrl":"https://doi.org/10.1007/s00227-024-04506-2","url":null,"abstract":"<p>This study examines the importance of both macroalgal heterogeneity and specific macroalgal species or morphotypes to nursery provision for juvenile sparids (<i>Diplodus capensis</i> and <i>Sarpa salpa</i>) in a shallow (&lt; 2 m), sheltered rocky cove in warm-temperate Algoa Bay, South Africa. The rocky cove is comprised of a mosaic of two main benthic habitats; canopy-forming <i>Plocamium corallorhiza</i> beds on rocky outcrops and flat reef dominated by low growing red algae morphotypes. We assessed macroalgal communities and the trophic ecology (stomach contents and isotopes), abundance and size structure of <i>D. capensis</i> and <i>S. salpa</i> in the two different benthic habitats and the resources/food associated with the dominant macroalgae species/morphotypes. We found high densities of <i>S. salpa</i> and <i>D. capensis</i>, in both high profile reef (rocky outcrops) and low profile (flat) reef. Within this habitat mosaic resources (epiphytes and macroinvertebrates) were more abundant in the non-canopy forming low growing macroalgae (<i>Laurencia</i> spp. and coralline turf algae) and these algae were also assimilated in the diets of both sparids. The high abundance of both juvenile <i>S. salpa</i> and <i>D. capensis</i> in high profile and low profile reef, suggests that within this mosaic of habitats these species may be using canopy-forming algae in the high profile reef for shelter and non-canopy forming algae in both the high and low profile reef for food. This shows that macroalgal habitats comprising several morphotypes have the potential to support higher juvenile diversity and abundance through both food provision and shelter.</p>","PeriodicalId":18365,"journal":{"name":"Marine Biology","volume":"38 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142185341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Exploring the intriguing arrival of Vayssierea Risbec, 1928 slugs in the Atlantic Ocean from the Indo-Pacific (Mollusca, Nudibranchia) 探索1928年蛞蝓Vayssierea Risbec从印度-太平洋来到大西洋的奇妙现象(软体动物,裸鳃纲)
IF 2.4 3区 生物学
Marine Biology Pub Date : 2024-08-29 DOI: 10.1007/s00227-024-04505-3
Carla Canet-Miralda, Juan Moles
{"title":"Exploring the intriguing arrival of Vayssierea Risbec, 1928 slugs in the Atlantic Ocean from the Indo-Pacific (Mollusca, Nudibranchia)","authors":"Carla Canet-Miralda, Juan Moles","doi":"10.1007/s00227-024-04505-3","DOIUrl":"https://doi.org/10.1007/s00227-024-04505-3","url":null,"abstract":"<p><i>Vayssierea</i> is an understudied nudibranch genus characterized by its orange colouration and small size (up to 5 mm in length). To date, there are four described species, distributed in the Indo-Pacific Ocean. Here, individuals of <i>Vayssierea</i> were recorded for the first time in the North Atlantic Ocean on the Canary Islands (Spain). This study aims to evaluate the systematic and taxonomic status and distribution of the genus through multilocus phylogenetic, morphological, and radular analyses. Phylogenetic results show the monophyly of <i>Vayssierea</i> and evidence indicating that the genus is included in the new subfamily Okadaiinae stat. nov. within Polyceridae. According to species delimitation tests, four different species have been sequenced from Russia to Australia, in addition to our new records in the Atlantic Ocean, but more information is needed to identify the species. Nevertheless, our specimens from the Canary Islands belong to two different species, one of which is identical to the Australian species. Bearing in mind that they lack a planktonic larval stage; we hypothesize that they arrived by shipping transportation or aquarium releases, becoming a non-indigenous species of the Atlantic Ocean.</p>","PeriodicalId":18365,"journal":{"name":"Marine Biology","volume":"57 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142185343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Cross-ecosystem trophic subsidies to sandy beaches support surf zone fish 对沙滩的跨生态系统营养补助为冲浪区鱼类提供支持
IF 2.4 3区 生物学
Marine Biology Pub Date : 2024-08-28 DOI: 10.1007/s00227-024-04499-y
Nicholas K. Schooler, Kyle A. Emery, Jenifer E. Dugan, Robert J. Miller, Donna M. Schroeder, Jessica R. Madden, Henry M. Page
{"title":"Cross-ecosystem trophic subsidies to sandy beaches support surf zone fish","authors":"Nicholas K. Schooler, Kyle A. Emery, Jenifer E. Dugan, Robert J. Miller, Donna M. Schroeder, Jessica R. Madden, Henry M. Page","doi":"10.1007/s00227-024-04499-y","DOIUrl":"https://doi.org/10.1007/s00227-024-04499-y","url":null,"abstract":"<p>Food webs in ecotones linking adjacent ecosystems may depend on cross-ecosystem subsidies. In surf zones of temperate sandy beaches, higher-level consumers often rely on intertidal prey that utilize allochthonous primary production. We evaluated the importance of phytoplankton and kelp-based prey, as well as physical characteristics of beaches, to diet of a surf zone fish, barred surfperch (<i>Amphistichus argenteus</i>), through stomach content and stable isotope analyses. Our results suggested that barred surfperch rely on prey from both phytoplankton and kelp-based subsidies, but their relative contribution to diet varied widely across beaches. Sand crabs (<i>Emerita analoga</i>), which depend on phytoplankton, were abundant at every beach, but their contribution to diet in stomach contents varied from 2 to 87% among sites. At the majority of beaches, δ<sup>13</sup>C values of fish muscle tissue, which reflects diet integrated over time, were within 0.5 ‰ of sand crab values, suggesting a reliance on phytoplankton-based prey. However, kelp-dependent prey associated either with beach wrack or subtidal reefs was also present in surfperch stomachs from all beaches (up to 41–72%). The notable enrichment in <sup>13</sup>C of juvenile surfperch at two beaches and adults at one beach relative to sand crabs suggested a longer-term contribution of kelp-based prey to fish diet. The detection of kelp-based prey in surfperch diets also indicates the potential for reciprocal subsidies in these ecotones. Our results suggest trophic connectivity between surf zones and kelp forests and sandy beaches is spatially variable and that opportunistic higher-level consumers can shift their diet in response to the availability of phytoplankton and kelp-based food resources.</p>","PeriodicalId":18365,"journal":{"name":"Marine Biology","volume":"26 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142224369","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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
Back-to-back bleaching events in Peninsular Malaysia (2019–2020) selectively affect hard coral taxa across- and within-reef scales 马来西亚半岛接连发生的白化事件(2019-2020 年)选择性地影响了珊瑚礁内和珊瑚礁外的硬珊瑚类群
IF 2.4 3区 生物学
Marine Biology Pub Date : 2024-08-23 DOI: 10.1007/s00227-024-04495-2
Sebastian Szereday, Christian R. Voolstra, Affendi Y. Amri
{"title":"Back-to-back bleaching events in Peninsular Malaysia (2019–2020) selectively affect hard coral taxa across- and within-reef scales","authors":"Sebastian Szereday, Christian R. Voolstra, Affendi Y. Amri","doi":"10.1007/s00227-024-04495-2","DOIUrl":"https://doi.org/10.1007/s00227-024-04495-2","url":null,"abstract":"<p>The impacts of (repeat) bleaching events and the differential heat stress susceptibility of hard coral taxa are largely unknown in Malaysia, although it is part of the greater coral triangle. Here we determined bleaching trajectories of 46 hard coral taxa across- and within-reef scales based on data recorded during the first reported back-to-back coral bleaching occurrences in Malaysia between May 2019 and September 2020. Although the severity of coral bleaching in both years did not correspond to the rather small magnitude of heat stress observed, i.e., Degree Heating Weeks (DHW) of 1.05 °C-weeks and 0 °C-weeks in 2019 and 2020 respectively, we observed high levels of bleaching (55.21% and 26.63% of all surveyed colonies in 2019 and 2020, respectively). Notably, the bleaching response for both consecutive years was highly taxon-specific and significantly varied across- and within-reef scales. Mortality rates overall were low following the 2019 event, likely due to a rapid decrease in heat stress. Five of the 46 surveyed hard coral taxa exhibited more severe bleaching in 2020, despite a lower heat stress load. Interestingly, we observed low bleaching of ascribed susceptible taxa such as <i>Acropora</i> and <i>Montipora</i>, while we found taxa considered to be resilient, e.g. <i>Heliopora</i> and <i>Porites</i>, to exhibit severe bleaching, suggesting a reversal of bleaching hierarchies of taxa over time. Our findings provide a foundation for further coral bleaching studies in a region with few published records to enable more accurate regional assessments and to follow the trajectory of future coral bleaching events.</p>","PeriodicalId":18365,"journal":{"name":"Marine Biology","volume":"35 1","pages":""},"PeriodicalIF":2.4,"publicationDate":"2024-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142185342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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