Marine Ecology-An Evolutionary Perspective最新文献

{"title":"High Level of Predation of Atlantic Salmon Smolt During Marine Migration","authors":"Knut Wiik Vollset,&nbsp;Saron Berhe,&nbsp;Bjørn T. Barlaup,&nbsp;Åse Åtland,&nbsp;Trond Einar Isaksen,&nbsp;Tore Wiers,&nbsp;Yngve Landro,&nbsp;Eirik Straume Normann,&nbsp;Robert J. Lennox","doi":"10.1111/maec.12864","DOIUrl":"https://doi.org/10.1111/maec.12864","url":null,"abstract":"<div>\u0000 \u0000 <p>The early marine migration of Atlantic salmon through coastal areas and fjords is a potential bottleneck in the migration where high losses can occur. Here we use a displacement experiment to attempt to identify mortality hotspots or bottlenecks within a fjord in Western Norway, where earlier studies have indicated exceptionally high mortality and poor recruitment over multiple years. Atlantic salmon (<i>Salmo salar</i>) smolts from the Dale River were tagged with prediction sensor acoustic transmitters and released at one of six sites within the fjord, which was covered by several receivers up to a large bridge across the fjord. There was a consistently high level of mortality throughout the migration, where none of the smolts from the first three release groups made it past the bridge to the outer fjord (mean survival = 17%). There was a strong effect of release distance on survival, suggesting that releasing the fish further out in the fjord and closer to the bridge improved survival. Mark-recapture analysis revealed the importance of the predation sensors for calculating survival; without using the information from predation sensors, survival through the system was high and the confidence bands were narrow; however, knowing which individuals had been eaten reduced estimated survival substantially. Once smolts arrived at the end of the tracking array at the bridge, passage of the bridge was slow, and we found that salmon spent time moving laterally along the structure rather than directly through it and appeared to be delayed.</p>\u0000 </div>","PeriodicalId":49883,"journal":{"name":"Marine Ecology-An Evolutionary Perspective","volume":"46 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143117572","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"First Record of Five Species of Sea Urchins (Class Echinoidea, Five Orders) From the Gulf of Aden","authors":"Mohammed A. Algurabi,&nbsp;Alawi H. MсNoon,&nbsp;Rashidi M. R. Awad,&nbsp;Shima Bakhshalizadeh,&nbsp;Botagoz M. Nasibulina,&nbsp;Tatyana F. Kurochkina,&nbsp;Attaala M. Ali,&nbsp;Syed Sikandar Habib,&nbsp;Francesco Fazio","doi":"10.1111/maec.12860","DOIUrl":"https://doi.org/10.1111/maec.12860","url":null,"abstract":"<div>\u0000 \u0000 <p>The Gulf of Aden (GA) experiences seasonal upwelling phenomena, fostering favorable conditions for diverse marine life. Despite this richness, the known sea urchin species in the Gulf of Aden has been limited to the common long-spined (<i>Diadema paucispinum</i>). Our study aimed to explore and document sea urchin diversity in this region. Through scuba diving and low tide collections from coral reefs and sandbanks, we obtained samples along the Hadhramout coast, spanning from the Qusayr area to the Aden Province coast, including Azizi Island opposite Ras Imran and the sub-district of the city of Aden. This survey revealed five sea urchin species, expanding the known taxa. For the first time in the Gulf of Aden, we qualitatively registered two regular and three irregular sea urchin species: <i>Heterocentrotus mammillatus</i> (Linnaeus, 1758), <i>Stomopneustes variolaris</i> (Lamarck, 1816), <i>Echinodiscus bisperforatus</i> (Leske, 1778), <i>Clypeaster humilis</i> (Leask, 1778), and <i>Lovenia elongata</i> (Gray, 1845). These findings contribute to our understanding of the Gulf biodiversity and emphasize the need for continued exploration in this region.</p>\u0000 </div>","PeriodicalId":49883,"journal":{"name":"Marine Ecology-An Evolutionary Perspective","volume":"46 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143115945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Growth and Mortality of the Pink Shrimp Penaeus notialis (Pérez Farfante, 1967) (Decapoda: Dendrobranchiata: Penaeidae) in the Colombian Caribbean","authors":"Jorge Paramo,&nbsp;Daniel Pérez,&nbsp;Tobias Mildenberger","doi":"10.1111/maec.12863","DOIUrl":"https://doi.org/10.1111/maec.12863","url":null,"abstract":"<div>\u0000 \u0000 <p>The pink shrimp (<i>Penaeus notialis</i>) constitutes an important commercial fishery in the Colombian Caribbean. However, due to the lack of biological data and fisheries management information led to the overexploitation and collapse of the shrimp fishery. Despite the economic and commercial importance of this fishery in the Colombian Caribbean, no studies have been carried out on the growth and mortality of pink shrimp. The objective of the present study was to estimate for the first time robust von Bertalanffy growth parameters, mortality rates with empirical formulae and the length-converted catch curve of the commercial pink shrimp (<i>P. notialis</i>) in the Colombian Caribbean. The samples were collected between June 2012 and May 2013, between Cartagena and the Gulf of Urabá. The parameters of the growth were estimated using the electronic Length frequency analysis. We calculated the natural mortality (<i>M</i>) with the <i>K</i> and <i>L</i>_∞ parameters. A total of 5199 pink shrimp were collected. The estimates of growth parameters for <i>P. notialis</i> showed higher <i>L</i>_∞ (females: 171.91 mm; males: 135.37 mm) and <i>W</i>_∞ in females (44.74 g) than in males (19.44 g). The growth coefficient (<i>K</i>) was 0.74 in females and 1.19 in males. The <i>t</i>_a estimated for females was −0.12 and for males −0.04. The maximum age (<i>t</i>_max) of this species was 3.91 year for female and 2.47 year for male. The natural mortality rate (M) for female was (0.61 year⁻¹) and male (0.93 year⁻¹).</p>\u0000 </div>","PeriodicalId":49883,"journal":{"name":"Marine Ecology-An Evolutionary Perspective","volume":"46 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143115943","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Study on Tintinnids (Loricate Ciliates) From the Mangrove Proximal Zone Waters of Sri Vijaya Puram (Port Blair), South Andaman","authors":"S. Sai Elangovan,&nbsp;G. Padmavati,&nbsp;R. Karthik","doi":"10.1111/maec.12856","DOIUrl":"https://doi.org/10.1111/maec.12856","url":null,"abstract":"<div>\u0000 \u0000 <p>We report here the interaction between the environment and tintinnids inhabiting in the mangrove proximal zone waters of South Andaman, in relation to certain physicochemical (temperature, salinity, pH, and dissolved oxygen) and biological (Phytoplankton biomass) parameters. As the proximal zone of mangrove waters is subjected to regular tidal effect, tintinnids community was studied for one year (September 2012–August 2013) during the Northeast monsoon, Inter-monsoon, and the Southwest monsoon periods. We recorded a total of 26 species belonging to 18 genera, and the abundance of tintinnids varied seasonally and spatially with higher abundance during the Southwest monsoon (19–59 ind L⁻¹) followed by the Inter-monsoon (18–27 ind L⁻¹). Statistical analysis, such as Canonical correspondence analysis (CCA) and Spearman rank correlation, depicts that the influences of environmental variables varied seasonally, and temperature (<i>r</i> = 0.76–0.90), salinity (<i>r</i> = 0.90–0.1), and pH (<i>r</i> = 0.90–0.1) are the major variables influencing on tintinnids assemblages in the mangrove proximal zone waters of South Andaman.</p>\u0000 </div>","PeriodicalId":49883,"journal":{"name":"Marine Ecology-An Evolutionary Perspective","volume":"46 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143114065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Marine Fish Passage—Underappreciated Threats to Connectivity Within the Marine Environment","authors":"Robert J. Lennox,&nbsp;Kim Birnie-Gauvin,&nbsp;Caitlin Bate,&nbsp;Steven J. Cooke,&nbsp;Tormod Haraldstad,&nbsp;Saron Berhe,&nbsp;Heather D. Penney,&nbsp;Charles W. Bangley,&nbsp;Knut Wiik Vollset,&nbsp;Morgan L. Piczak","doi":"10.1111/maec.12859","DOIUrl":"https://doi.org/10.1111/maec.12859","url":null,"abstract":"<p>Habitat fragmentation is a major threat to aquatic biodiversity loss. However, much of the focus is on the connectivity of freshwaters, with much less attention given to marine ecosystems. We contend that coastal infrastructure including bridges, causeways, tidal turbines, land infilling and harbours, wharfs, quays, piers and docks have resulted in underappreciated impacts on the connectivity of fish movements resulting in passage challenges at sea. For each type of marine infrastructure, we synthesised the present status of knowledge to characterise the problems and future challenges and also identify mitigation options and passage solutions to restore connectivity for fishes. Bridges can disrupt currents, generate light and noise/vibration, and emit electromagnetic signals, so more work is needed to modify in-water designs to minimise the negative impacts on fishes. Causeways involve infilling, resulting in full in-water barriers, requiring fishes to circumnavigate these structures and there is limited research on mitigation (e.g., fishways). Tidal turbines are placed in areas with high currents, which can hinder movements and result in entrainment; however, monitoring fish movements is challenging in these unique areas. Offshore energy has grown in recent years and can impact fish connectivity via altered sediment dynamics and water currents, as well as through the generation of noise pollution and electromagnetic fields. Land filling results not only in habitat loss but also in fragmentation, and it will be imperative to identify important habitats and corridors to minimise impacts there. Finally, infrastructure associated with boats (e.g., harbours, docks) negatively impacts nearshore habitat, which can alter movement trajectories. In the collective, we found evidence that diverse types of marine infrastructure can impact connectivity and, ultimately, fish movement and migrations. Interestingly,bespoke fish passage solutions in marine environments seem rare. As coastal development will increase in the future, it is imperative that we assess the potential connectivity issues resulting from marine infrastructure and that we generate solutions to mitigate these issues for marine organisms.</p>","PeriodicalId":49883,"journal":{"name":"Marine Ecology-An Evolutionary Perspective","volume":"46 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/maec.12859","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143113893","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Symbiosis in Sea Anemones: A Few Case Reports Along the Bay of Bengal Large Marine Ecosystem","authors":"L. Ranjith,&nbsp;R. Saravanan,&nbsp;S. Ramkumar,&nbsp;C. Kalidas,&nbsp;R. Vinothkumar,&nbsp;D. Linga Prabu,&nbsp;M. Kavitha,&nbsp;A. Mathan Babu,&nbsp;R. Kalaibharathi,&nbsp;P. S. Asha","doi":"10.1111/maec.12855","DOIUrl":"https://doi.org/10.1111/maec.12855","url":null,"abstract":"<div>\u0000 \u0000 <p>The most well-known relationship is between sea anemones and decapod crustaceans, of which crabs are classic examples of mutualistic interactions in which both organisms benefit from living with zooxanthellae and hermatypic or reef-forming corals. A marine ecology study off the southern coast of Tamil Nadu revealed five types of sea anemones that cohabit symbiotically with other marine animals. These species include <i>Stichodactyla haddoni</i> (Saville-Kent, 1893), <i>Entacmaea quadricolor</i> (Leuckart in Ruppell and Leukart, 1828), <i>Radianthus</i> (=<i>Heteractis</i>) <i>magnifica</i> (Quoy and Gaimard, 1833), <i>Radianthus</i> (=<i>Heteractis</i>) <i>crispa</i> (Ehrenberg, 1834), and <i>Calliactis polypus</i> (Forsskal, 1775), are found in symbiotic associations. This observation revealed that the decapod porcelain crab <i>Neopetrolisthes</i> is associated with the sea anemones <i>Radianthus</i> and <i>Entacmaea</i>, whereas this has not been reported in <i>Stichodactyla</i>. The hermit crab anemone, <i>C. polypus</i>, is generally associated with hermit crabs, and we report this association for the first time in live gastropod, <i>Turbinella pyrum</i> (Linnaeus, 1767). A few animals (both the host and symbiont) were brought to the cnidarian laboratory at the ICAR-Tuticorin Regional Station of the CMFRI, where they were maintained in optimum seawater for further observations. The present study aimed to compare previous reports of symbiosis in decapod crustaceans and gastropods with sea anemones from Indian waters to provide insight into the dynamics of symbiosis in the Bay of Bengal Large Marine Ecosystem.</p>\u0000 </div>","PeriodicalId":49883,"journal":{"name":"Marine Ecology-An Evolutionary Perspective","volume":"46 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143112538","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"‘Species’ Is Not the (Only) Unit of Biodiversity: A Process-Philosophical Perspective on Conservation Concepts","authors":"Ole Martin Sandberg,&nbsp;Anthony Schultz,&nbsp;Ragnhildur Guðmundsdóttir,&nbsp;Skúli Skúlason","doi":"10.1111/maec.12857","DOIUrl":"https://doi.org/10.1111/maec.12857","url":null,"abstract":"<div>\u0000 \u0000 <p>In this paper, we argue that the concept of ‘species’ should not be the main focus of research and policies in biodiversity conservation. Diversity is important at all levels of life: within species as well as among them and within and among ecosystems. First, we give a brief overview of the debate about the necessity to find a unified concept of ‘species’. In this, we side with Charles Darwin, who insisted that no strict definition could be given to this term, which is ultimately a matter of arbitrary and pragmatic human language. This did not worry Darwin, and neither should it concern biologists or ecologists today. Darwin's great discovery relied on a recognition of the many differences within species, not on their similarities. Next, we argue that the focus on species and the neglect of other diversity measures in the conservation discourse have led to problems in public perception of—and policies on—conservation and biodiversity. In areas with few species, intraspecific diversity is often of utmost importance to ecosystem processes and functions, and such regions may provide the environmental conditions that enable and promote the diversification of specialised subgroups in the absence (or reduction) of interspecific competition. We give some examples of these processes based on research in marine and freshwater ecosystems, focusing on Iceland and the subarctic region. Finally, we refer to alternative, emerging methodologies of assessing ecosystem health which go beyond the quantitative method of counting species and subspecies and instead emphasise more complex phenomena such as relations, interactions and processes. These approaches, we suggest, are consistent with the philosophical tradition called ‘process ontology’, and we argue that both ecological research and conservation policy can benefit from a process philosophical perspective. Finally, we briefly discuss our motivations for finding this topic to be of importance.</p>\u0000 </div>","PeriodicalId":49883,"journal":{"name":"Marine Ecology-An Evolutionary Perspective","volume":"46 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143112518","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Future Climate Change Scenarios of Increased CO2 and Temperature Strongly Affect a Coral Reef Meiobenthic Harpacticoid (Crustacea) Community","authors":"Visnu Cunha Sarmento,&nbsp;Bárbara Ramos Pinheiro,&nbsp;Manuel Jesus Flores Montes,&nbsp;André Morgado Esteves,&nbsp;Paulo Jorge Parreira Santos","doi":"10.1111/maec.12858","DOIUrl":"https://doi.org/10.1111/maec.12858","url":null,"abstract":"<div>\u0000 \u0000 <p>Small metazoans, especially harpacticoid copepods, are an important component in the benthic food webs of benthic environments. However, studies on the effects of elevated CO₂ and temperature on these animals are scarce and those that do exist focus mainly on the individual species level. A laboratory experiment was conducted to evaluate the impact of different climate change scenarios on a community of harpacticoid copepods from a coral reef environment. Samples were collected from the coral reef subtidal zone of Serrambi beach (Ipojuca, Pernambuco, Brazil), using colonized artificial substrate units. The units were exposed to control treatments and to three climate change scenarios and were collected after 14 and 29 days. A highly diverse community of harpacticoids was analyzed [H′(log₂) = 4.37]. Changes in the community structure were observed, and the response of the copepod community structure to the different scenarios varied according to the sampling period. The maintenance of a highly diverse community enabled a complex pattern of responses to be observed at a species level with three different response patterns to the changing seawater conditions: sensitive species represented by <i>Tisbe</i> sp., <i>Stenhelia</i> sp. and <i>Ameira</i> sp.; mildly sensitive represented by Cyclopoida and <i>Dactylopusia</i> sp.; resistant or opportunist represented by <i>Ectinosoma</i> sp.1, <i>Ectinosoma</i> sp.2 and <i>Mesochra</i> sp. The increase in malformed adult animals in the most severe scenario indicated that species that do not suffer mortality are not exempt from sublethal symptoms. Harpacticoid organisms are shown as reliable tools to assess climate change in coral reef environments.</p>\u0000 </div>","PeriodicalId":49883,"journal":{"name":"Marine Ecology-An Evolutionary Perspective","volume":"46 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143112307","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Deepwater Sharks at Their Northern Limits—Distribution, Diet and Trophic Relations","authors":"Jón Sólmundsson,&nbsp;Klara B. Jakobsdóttir,&nbsp;Hildur Pétursdóttir","doi":"10.1111/maec.12854","DOIUrl":"https://doi.org/10.1111/maec.12854","url":null,"abstract":"<p>Deepwater areas and continental slope regions south and west off Iceland are characterized by a relatively high species diversity and abundance of sharks that likely play a critical ecological role within this ecosystem. The study investigates trophic ecology of the sharks employing stomach content analysis and stable isotope analysis of nitrogen and carbon. In a standardized groundfish survey in Icelandic waters spanning 28 years, sharks were exclusively caught south of the Greenland–Iceland ridge and west of the Iceland–Faroe ridge, likely due to significantly lower seawater temperatures prevailing north of the ridges. The sharks exhibited a diverse diet primarily comprising secondary, and tertiary consumers, placing them within the lower spectrum of the fourth trophic level with estimated trophic levels ranging from 4.1 to 4.5 depending on the species or method employed. Three distinct feeding categories emerged: the first characterized by a main predation on various fish species, the second involving a specialized predation on mesopelagic fish and the third strategy encompassing a significant feeding on crustaceans. Resource portioning was evident through low to medium diet overlap indices among some of the shark species. Ontogenetic changes were observed in two of the most abundant and data-rich species, namely the black dogfish (<i>Centroscyllium fabricii</i>) and great lanternshark (<i>Etmopterus princeps</i>). As these sharks increased in size, there was a dietary shift from crustaceans to fish, reflected in higher trophic levels based on δ¹⁵N values. Given the scarcity of sharks in stomachs of demersal fish within the study area, coupled with low fishing pressure on sharks off Iceland, it is plausible that their abundance is currently regulated primarily by bottom-up processes or environmental factors.</p>","PeriodicalId":49883,"journal":{"name":"Marine Ecology-An Evolutionary Perspective","volume":"46 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/maec.12854","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143111069","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Biology of One of the Most Abundant Mesopelagic Fish in Icelandic and Surrounding Waters: The Krøyer's Lantern Fish Notoscopelus kroyeri (Malm, 1861)","authors":"Charlotte S. Matthews,&nbsp;James Kennedy,&nbsp;Anna H. Ólafsdóttir,&nbsp;Christophe Pampoulie","doi":"10.1111/maec.12852","DOIUrl":"https://doi.org/10.1111/maec.12852","url":null,"abstract":"<p>Myctophids play an essential role in the marine ecosystem, linking the surface to the mesopelagic layer through diel vertical migration, and contributing to carbon sequestration. However, basic knowledge of their biology and distribution is still limited. Here, we described the length and age distribution, growth and otolith morphometrics for one of the most abundant myctophid fish of the Northeast Atlantic, the Krøyer's lantern fish <i>Notoscopelus kroyeri</i> (Malm, 1861). Individuals were sampled opportunistically by pelagic trawls during the International Ecosystem Summer Survey in the Nordic Seas (IESSNS) conducted in July 2020 and 2021. We provide the length–weight and otolith–fish size relationships and the size distribution for 336 <i>N. kroyeri</i> individuals collected along Iceland's south and west shelf, the Iceland Basin, and the Irminger Sea. Fish were primarily distributed along the Reykjanes Ridge and the continental shelf at depths between 0 and 550 m. Three size groups, corresponding to three different age groups, with individuals from 2 to 9 years old, were detected across sampling areas. We found positive allometric growth during both sampling years. Linear regressions were significant between otolith length, width and area, and fish length and weight, with adjusted <i>r</i>^<i>2</i> values ranging between 0.93 and 0.94. This study provides new information on the biology and distribution of one of the most abundant mesopelagic species in south Icelandic and surrounding waters.</p>","PeriodicalId":49883,"journal":{"name":"Marine Ecology-An Evolutionary Perspective","volume":"46 1","pages":""},"PeriodicalIF":1.5,"publicationDate":"2024-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/maec.12852","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143431774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}