Food Webs最新文献

{"title":"Dietary shift in the American Kestrel under severe drought conditions in the southern Baja California Peninsula","authors":"Martín G. Frixione,&nbsp;Christian Salvadeo,&nbsp;Hugo Alfredo Juárez-Castañón,&nbsp;Sergio Ivan Santana-Rodriguez,&nbsp;Georgina Brabata-Domínguez","doi":"10.1016/j.fooweb.2026.e00473","DOIUrl":"10.1016/j.fooweb.2026.e00473","url":null,"abstract":"<div><div>Generalist predators often adjust their diets when environments are stressed by extreme climatic conditions. The American Kestrel (<em>Falco sparverius</em>) is a generalist raptor, and most studies have identified rodents and insects as its primary prey throughout its distribution. We examined prey capture rates of American Kestrels during the non-breeding and breeding seasons (2024–2025) in the southern Baja California Peninsula in a period of extreme drought. Overall prey capture rates did not differ significantly between the non-breeding (0.78 ± 0.23 prey·h⁻¹) and breeding seasons (1.13 ± 0.24 prey·h⁻¹). However, we detected significant seasonal differences in prey composition (ANOSIM, <em>P</em> = 0.005, <em>R</em> = 0.31). During the non-breeding season, diets consisted largely of insects, with vertebrates—primarily birds—being scarce. In.</div><div>contrast, during the breeding season kestrels shifted markedly toward reptile prey. The limited consumption of rodents by kestrels was remarkable, particularly during the non-breeding season, and may have consequences for kestrels once the breeding season begins. Evidently, drought had important consequences for the diversity of prey consumed and subsequently impacted the breeding performance of kestrels in the area.</div></div>","PeriodicalId":38084,"journal":{"name":"Food Webs","volume":"48 ","pages":"Article e00473"},"PeriodicalIF":1.7,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148854259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Social wasps on stinkhorn fungi: Rare but recurrent visits by Agelaia (Hymenoptera: Vespidae) to the gleba of Phallus indusiatus s.l. in Amazonia","authors":"Thais Amaral de Castro,&nbsp;Bruno Corrêa Barbosa,&nbsp;Tatiane Tagliatti Maciel","doi":"10.1016/j.fooweb.2026.e00476","DOIUrl":"10.1016/j.fooweb.2026.e00476","url":null,"abstract":"<div><div>Visits by social wasps to fungal fruiting bodies remain poorly documented in the Neotropical region, limiting our understanding of their use of ephemeral fungal resources. In this study, we document rare but recurrent visits by <em>Agelaia</em> social wasps to the gleba of <em>Phallus indusiatus</em> s.l. in Amazonia by combining a field observation with systematically screened citizen-science records. By combining one field observation with 10 iNaturalist records retained after the manual screening of 1519 observations assigned to the <em>P. indusiatus</em> complex in South America, we documented 11 visitation records involving social wasps. Ten records were assigned to four <em>Agelaia</em> species: <em>Agelaia angulata</em>, <em>Agelaia fulvofasciata</em>, <em>Agelaia pallipes</em>, and <em>Agelaia testacea</em>, whereas one record was identified only as Polistinae cf. <em>Agelaia</em>. These records occurred in Amazonian localities of Brazil, Ecuador, Peru, and Suriname, showing that, although rarely documented, visits by social wasps to <em>P. indusiatus</em> s.l. are not restricted to an isolated event. Our results expand the known taxonomic and geographic breadth of social-wasp visitation to stinkhorn fungi. They show that such visits are rare, recurrent, and still underdocumented, while the focal observation directly documents secretion collection from the fertile surface by <em>A. fulvofasciata</em>.</div></div>","PeriodicalId":38084,"journal":{"name":"Food Webs","volume":"48 ","pages":"Article e00476"},"PeriodicalIF":1.7,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148934824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Lethal restaurant: The trophic ecology of a bird of prey in highway-fragmented landscapes","authors":"Vitória Muraro,&nbsp;Cínthia Negrine Fernandez,&nbsp;Leandro Bugoni","doi":"10.1016/j.fooweb.2026.e00472","DOIUrl":"10.1016/j.fooweb.2026.e00472","url":null,"abstract":"<div><div>Highways can alter the foraging behavior of top predators, such as raptors, by providing carcasses and attracting prey associated with human-modified environments or in areas preserved by set-aside areas along roads. However, exploiting these resources near roads increases the risk of collisions and poses additional conservation challenges. Here, we investigated the diet and individual specialization of Great Horned Owls (<em>Bubo virginianus</em>, <em>n</em> = 26) killed on highways in southern Brazil, integrating stomach content analysis with carbon and nitrogen stable isotope analysis (SIA) from multiple tissues. The species exhibited generalist feeding habits at the population level, with mammals (Prey-Specific Relative Importance Index, PSIRI% = 35.7) and insects (PSIRI% = 20.8) as the main prey items identified in stomach contents. SIA indicated a predominant assimilation of mammals in muscle (95% Credible Intervals CI = 20.4–48.2%), liver (95% CI = 25.9–58.4%), and feathers (95% CI = 30.7–60.2%), followed by amphibians (muscle: 95% CI = 3.5–38.9%; liver: 95% CI = 3.2–45.4%; feathers: 95% CI = 2.8–44.8%). Isotopic data also revealed high individual specialization, particularly reflected by carbon isotopic variation, suggesting consistent consumption of different prey groups or prey mixtures among individuals. Such specialization may lead to differential exposure to roadkill risk in anthropogenic landscapes, both by feeding on carcasses or preying in set-aside areas along roads. The integration of traditional dietary and isotopic approaches, unprecedented for this species, provides novel insights into the trophic ecology of the Great Horned Owl in highway-fragmented ecosystems of southern Brazil and underscores the importance of considering intraspecific variability in ecological and conservation studies.</div></div>","PeriodicalId":38084,"journal":{"name":"Food Webs","volume":"48 ","pages":"Article e00472"},"PeriodicalIF":1.7,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148854168","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Prey Refuge Enhances Coexistence and Stability in a Tri-Trophic Intraguild Predation System","authors":"Anupam Priyadarshi,&nbsp;Ram Chandra,&nbsp;Nitin Sharma","doi":"10.1016/j.fooweb.2026.e00471","DOIUrl":"10.1016/j.fooweb.2026.e00471","url":null,"abstract":"<div><div>Ecological food webs are increasingly altered by human-driven disturbances, including habitat loss, overexploitation, and species invasions, which disrupt trophic interactions and threaten species persistence. In such contexts, prey refuge—arising from spatial heterogeneity or behavioral avoidance—can mediate predator–prey interactions and influence community stability. While its role in simple systems is well known, its impact within multi-trophic food webs remains insufficiently understood. In this study, we examine how refuge shapes the dynamics of a tri-trophic intraguild predation system, where both prey and intermediate consumers receive protection. The results show that refuge reduces the intensity of trophic interactions, leading to suppressed population fluctuations and promoting more stable coexistence. Importantly, the range of conditions under which all species persist is significantly expanded. We further demonstrate that the distribution of refuge across trophic levels strongly influences system behavior. Both symmetric and asymmetric refuge allocations can support stable coexistence, although their effects depend on refuge intensity and on the trophic level receiving protection.</div><div>However, the stabilizing role of refuge is not unlimited. High levels of protection weaken energy transfer across trophic levels, eventually leading to the decline or loss of top predators. This reveals a trade-off between stability and trophic connectivity, where excessive refuge can undermine food-web structure. Overall, our findings emphasize that refuge acts as a context-dependent regulatory mechanism in ecological systems. Moderate and appropriately distributed refuge can enhance stability and biodiversity, whereas excessive protection may weaken trophic connectivity and promote the loss of higher trophic levels. These insights are relevant for conservation planning, biological control, fisheries management, and habitat restoration, where carefully balanced refuge can support both prey persistence and predator survival.</div></div>","PeriodicalId":38084,"journal":{"name":"Food Webs","volume":"48 ","pages":"Article e00471"},"PeriodicalIF":1.7,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148854261","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"When frequency does not reflect biomass: Decoupled trophic pathways in the diet of the lesser horned owl (Bubo magellanicus)","authors":"Anahí E. Formoso,&nbsp;Daniela de Tommaso,&nbsp;Germán H. Cheli,&nbsp;Gastón E. Zubarán","doi":"10.1016/j.fooweb.2026.e00474","DOIUrl":"10.1016/j.fooweb.2026.e00474","url":null,"abstract":"<div><div>Predator–prey interactions can differ markedly in their frequency and energetic contribution, particularly when predators consume prey spanning a wide range of body sizes. Quantifying both dimensions may therefore provide complementary insights into the role of predators within food webs. We investigated the diet of the Lesser Horned Owl (<em>Bubo magellanicus</em>) in an agroecosystem of the Lower Chubut River Valley, Patagonia, Argentina, over almost five years, with the aim of assessing seasonal variation in prey composition and evaluating the relationship between numerical frequency and biomass contribution. We analyzed 128 pellets collected during breeding and non-breeding seasons and identified 1725 prey items, including arthropods and vertebrates. Arthropods dominated numerically (81% of prey), particularly Coleoptera and Scorpions, whereas vertebrates represented a smaller proportion of prey items but contributed most of the consumed biomass. Lagomorphs accounted for only a small fraction of prey items but represented 73.9% of total biomass. The contribution of prey categories also varied seasonally, with arthropods dominating numerically during the breeding season and vertebrates becoming relatively more important during the non-breeding season. These results reveal a pronounced decoupling between the frequency and biomass of prey consumed by <em>B. magellanicus</em>. Consequently, frequency-based representations of trophic interactions alone may emphasize numerous interactions with small-bodied prey while underrepresenting less frequent but biomass-dominant pathways involving larger prey. Our findings highlight the importance of integrating prey frequency and biomass when characterizing predator–prey interactions and interpreting the potential role of predators in food webs.</div></div>","PeriodicalId":38084,"journal":{"name":"Food Webs","volume":"48 ","pages":"Article e00474"},"PeriodicalIF":1.7,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148854262","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Resolving bottom-up and top-down food-web structure and function for Everglades restoration","authors":"Peter J. Flood,&nbsp;Bradley A. Strickland,&nbsp;Alan J. Mock,&nbsp;Joel C. Trexler,&nbsp;Nathan J. Dorn","doi":"10.1016/j.fooweb.2026.e00475","DOIUrl":"10.1016/j.fooweb.2026.e00475","url":null,"abstract":"<div><div>Many ecosystem functions and services that sustain biodiversity and human well-being are rooted in food-web processes, yet food-web studies often fail to integrate multiple ways of quantifying trophic links or to clearly distinguish top-down from bottom-up effects. To address these gaps in support of on-going Everglades restoration, we combined diet data with studies quantifying top-down effects to construct a high-resolution energetic food web for freshwater marshes. Our goal was to identify highly connected nodes relevant to restoration and to evaluate how bottom-up and top-down links interact to shape community structure and ecosystem function. Our review compiled diets for 107 consumers from 82 publications, revealing a food web reliant on detrital-based energy pathways, with notable exceptions for some invasive fishes. The detrital-energy pathway was characterized by highly connected consumer nodes including amphipods, grass shrimp (<em>Palaemon paludosus</em>), and cyprinodontid fishes. Most indicators of restoration success, like American alligators (<em>Alligator mississippiensis</em>), were highly connected. Comparisons of dynamic and energetic links indicated that strong top-down effects often occurred between consumer-resource pairs with weak energetic links; diet importance for predators failed to predict strength of population dynamic effects for prey. Further, top-down effects of some invasive fishes may limit bottom-up effects of Everglades restoration. Using both types of information and visualizing the web yielded a more complete, though still imperfect, food web, which can better inform ecological restoration strategies. In the Everglades, this means improving resolution for indicator species (higher predators) combined with understanding limitations of their prey and food-web responses to hydrologic and biogeochemical drivers.</div></div>","PeriodicalId":38084,"journal":{"name":"Food Webs","volume":"48 ","pages":"Article e00475"},"PeriodicalIF":1.7,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148934822","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structure and strength of trophic interactions in a tropical floodplain wetland (Bhaluka Beel, eastern India): insights from food-web topology and adjacency matrix analysis","authors":"Chandan Sarkar,&nbsp;Nipu Rani Nath","doi":"10.1016/j.fooweb.2026.e00477","DOIUrl":"10.1016/j.fooweb.2026.e00477","url":null,"abstract":"<div><div>Understanding how abiotic drivers and biotic interactions jointly regulate food-web structure is central to wetland ecology, yet mechanistic, hypothesis-driven studies remain limited for tropical floodplain systems. This study examined the food-web dynamics of Bhaluka Beel, a tropical freshwater wetland in eastern India, by explicitly testing predictions derived from bottom-up, top-down, habitat-mediated, and stress-response hypotheses. Seasonal variation in physicochemical parameters, primary productivity, and multiple biotic compartments—phytoplankton, zooplankton, macrophytes, benthos, aquatic insects, fishes, amphibians, reptiles, birds, and aquatic mammals—was quantified. Structural equation modeling (SEM) was used to evaluate hypothesized trophic relationships within a conceptual food-web framework and adjacency matrix representation was applied to assess interaction strength and network topology. Results revealed strong bottom-up coupling between nutrient availability, primary productivity, and planktonic biomass, together with evidence consistent with top-down regulation through strong fish–zooplankton predator–prey interactions. Macrophytes also appeared to contribute to food-web stability by increasing habitat complexity and providing alternative energy pathways. Abiotic stress associated with organic enrichment and lower dissolved oxygen was linked to weaker higher-trophic interactions, leading to partial simplification of the food web. These findings provide mechanistic insights into trophic regulation in floodplain wetlands and offer a methodological framework for assessing ecosystem responses to environmental change.</div></div>","PeriodicalId":38084,"journal":{"name":"Food Webs","volume":"48 ","pages":"Article e00477"},"PeriodicalIF":1.7,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148934823","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Trophic ecology of the invasive cane toad across contrasting environments in Hawai’i","authors":"Camila Fernanda Moser ,&nbsp;Camila Kfouri Jelen ,&nbsp;Guilherme Andrade Neto Schmitz Boeing ,&nbsp;Raul Costa-Pereira ,&nbsp;Brenden S. Holland ,&nbsp;L. Felipe Toledo","doi":"10.1016/j.fooweb.2026.e00456","DOIUrl":"10.1016/j.fooweb.2026.e00456","url":null,"abstract":"<div><div>The cane toad <em>Rhinella marina</em>, introduced to Hawaiʻi in the 1930s, is now abundant across urban areas and forest remnants on Oʻahu. To assess its trophic ecology and habitat-dependent resource use, we combined stomach-content analysis (current diet) with stable isotope ratios of carbon (δ¹³C) and nitrogen (δ¹⁵N) from liver (weeks) and muscle (months) samples. We examined stomachs of 93 adults (38 golf courses, 55 forest sites) and isotope values from 26 individuals (13 per habitat). Diets diverged strongly between habitats: forest toads showed a more even prey assemblage dominated by ants (<em>Pheidole megacephala</em>) and beetles (<em>Sitophilus oryzae</em>), while golf course toads were dominated by synanthropic cockroaches (&gt;50% of dietary importance). Individuals from golf courses also exhibited higher prey richness, greater prey volume, and more food items per capita. Stable isotopes mirrored these trends: golf course toads were enriched in δ¹³C and δ¹⁵N and tended to show higher δ¹³C values, and occupied broader isotopic niches, whereas forest conspecifics showed narrower, C₃-based niches. Concordant liver–muscle isotopic values indicate consistent resource use across weeks to months, suggesting habitat fidelity rather than habitat switching. Morphometric and dietary data further reinforced habitat contrasts: golf course toads were larger and heavier, and snout–vent length was negatively correlated with prey richness and prey number. Overall, <em>R. marina</em> exhibited marked trophic plasticity, with resource subsidies in urban green spaces promoting larger body size and increased exploitation of available resources. This flexibility likely enhances the species' persistence and ecological impact across Oʻahu's heterogeneous land-use mosaic, highlighting the role of anthropogenic resource pathways in shaping trophic interactions in invaded ecosystems.</div></div>","PeriodicalId":38084,"journal":{"name":"Food Webs","volume":"47 ","pages":"Article e00456"},"PeriodicalIF":1.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148184511","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A potential trophic link in grasslands? First records of Lycosidae spiders preying on Sporophila iberaensis nestlings","authors":"Simón Kraemer ,&nbsp;Jonas R.R. Rosoni ,&nbsp;J. Francisco Cataudela ,&nbsp;Melanie Browne ,&nbsp;Luis N. Piacentini ,&nbsp;Adrián S. Di Giacomo ,&nbsp;Leonardo Campagna ,&nbsp;Cecilia Kopuchian","doi":"10.1016/j.fooweb.2026.e00457","DOIUrl":"10.1016/j.fooweb.2026.e00457","url":null,"abstract":"<div><div>Predator-prey interactions represent a fundamental regulatory mechanism governing energy flux and community structure across ecosystems. Characterizing these links is essential for understanding food web dynamics. Here, we documented two novel predatory interactions between Lycosidae spiders and nestlings of the Iberá Seedeater (<em>Sporophila iberaensis</em>) during reproductive monitoring across three breeding areas. Both predation events were visually recorded early in the morning during routine nest checks, and the parental behavior suggests that they occurred shortly before nest inspection. Although only 2% of nest predation events were attributed to lycosid spiders, their detection through direct observation indicates that such interactions may represent under-reported components of grassland trophic network. Predation is a primary cause of reproductive failure in grassland birds, yet invertebrate predators are rarely considered in this context. Our findings suggest that lycosids may opportunistically exploit vulnerable nestlings and could represent a previously overlooked sources of predation on small vertebrates, highlighting a potentially underestimated pathway of energy transfer in Neotropical grassland food webs. Furthermore, the apparent rarity of these events may reflect methodological biases that favor the detection of larger predators. These observations raise new questions regarding the ecological role of spiders in grassland trophic interactions and emphasize the need for future studies evaluating the frequency and ecological relevance of these interactions.</div></div>","PeriodicalId":38084,"journal":{"name":"Food Webs","volume":"47 ","pages":"Article e00457"},"PeriodicalIF":1.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148184510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Summer flounder (Paralichthys dentatus) trophic ecology in a eutrophic, polyhaline mid-Atlantic coastal lagoon system","authors":"Ejiroghene Mayor,&nbsp;Paulinus Chigbu","doi":"10.1016/j.fooweb.2026.e00455","DOIUrl":"10.1016/j.fooweb.2026.e00455","url":null,"abstract":"<div><div>Tidal-dominated lagoons of the mid-Atlantic region serve as nursery habitats for summer flounder (<em>Paralichthys dentatus</em>), but information is scarce on the trophic ecology of the species in such systems. Summer flounder (3.8–25.2 cm TL) diet was assessed using samples collected seasonally (June 2011 to August 2014) from the Maryland Coastal Bays (MCBs). Summer flounder fed primarily on mysids, amphipods, annelids and isopods. Mysids contributed 53% by weight of <em>P. dentatus</em> stomach contents, and 52% of the stomachs contained mysids. About 63% of flounder consumed amphipods, which accounted for 36.3% by weight of the food consumed. In spring, amphipods contributed &gt;50% of weight of flounder stomach contents in the Chincoteague Bay, whereas mysids (46.6%) were the most important prey in Newport Bay. Mysids (94.0%) and amphipods (98.5%) dominated the weight of stomach contents in Sinepuxent Bay and St. Martin River, respectively. Shrimp larvae (54.4%) and amphipods (30.0%) were the most important prey consumed in Assawoman Bay. In summer, flounder caught in St. Martin River, Assawoman Bay, and Sinepuxent Bay, consumed primarily mysids (&gt;90% by weight); flounder from Newport (47.3%) and Chincoteague (15.6%) Bays consumed less mysids. Summer flounder diet in MCBs differs from the diet previously reported in the Chesapeake Bay, mainly because of the higher contribution of amphipods to, and negligible amounts of fish prey in the diets of, fish from the MCBs. These differences in diet probably result in a smaller mean size of fish at the end of their first year of residence in the MCBs.</div></div>","PeriodicalId":38084,"journal":{"name":"Food Webs","volume":"47 ","pages":"Article e00455"},"PeriodicalIF":1.5,"publicationDate":"2026-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148184512","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}