Aquatic Ecology最新文献

{"title":"Baseline assessment of mollusc assemblages from different intertidal rocky shores of Southern Patagonia","authors":"Carlos E. Rumbold,&nbsp;Juan P. Martin,&nbsp;Susana Pittaluga,&nbsp;Mario Perroni,&nbsp;Alicia Sar,&nbsp;Carlos Caminos,&nbsp;Santiago H. Torres","doi":"10.1007/s10452-026-10284-4","DOIUrl":"10.1007/s10452-026-10284-4","url":null,"abstract":"<div><p>Mollusc species are ecologically and economically important, acting as fishery resources, ecosystem engineers, bioindicators, and invasive species. However, their study in Southern Patagonian rocky shores remains limited. This research aimed to study the mollusc assemblages and to explore the effect of environmental variables (salinity regime, wave exposure and seasonality) and substrate characteristics (inclination and elevation) on community descriptors. A seasonal sampling was conducted at two sites in Bahía San Julián: one exposed to wave action (SJO) and one sheltered (SJI). Additionally, a sheltered estuarine site was studied in Río Gallegos (RGE). The results showed that at lower horizontal substrates species richness was highest in exposed marine environments (SJO: 7–19 spp.), followed by sheltered marine (SJI: 5–13 spp.) and estuarine environments (RGE: 2–8 spp.). Total density peaked in exposed-marine environments at upper substrates (SJO: 23,000–38,000 ind/m²) and was lowest at lower substrates (ca. 2200–13,000 ind/m²), considering both orientations (horizontal and vertical). A distinct composition of mollusc assemblages were determined between sheltered-estuarine (RGE) and marine environments (SJI and SJO), and between substrate characteristics. The explained variation of mollusc abundance, was attributed mainly to salinity regime (32.8%), followed by substrate elevation (14.7%), wave exposure (10.1%) and substrate inclination (9.0%). Suspension feeders were the dominant group in all study sites. Our findings suggest that species richness, density, and diversity of mollusc assemblages are synergistically determined by environmental variables and substrate characteristics. The present study provides essential information for developing marine biodiversity conservation programs in Southern Patagonia.</p></div>","PeriodicalId":8262,"journal":{"name":"Aquatic Ecology","volume":"60 2","pages":""},"PeriodicalIF":1.8,"publicationDate":"2026-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147441041","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":"Thermal stratification and carbon dioxide dynamics in tropical lakes: insights from a multi-year assessment","authors":"Eline Nayara Dantas da Costa,&nbsp;Marcelo Friederichs Landim de Souza,&nbsp;Roger Carvalho da Silva,&nbsp;Fabrício Bronzoni-Oliveira,&nbsp;Júlia Almeida Leite,&nbsp;Fernando Henrique Lemos,&nbsp;Felicidade Porto Lobianco,&nbsp;Gilberto Fonseca Barroso","doi":"10.1007/s10452-026-10276-4","DOIUrl":"10.1007/s10452-026-10276-4","url":null,"abstract":"<div><p>Tropical lakes play a significant role in the global carbon cycle, although their contributions remain poorly characterized. This study presents a comprehensive six-year monthly monitoring of two tropical lakes, Lake Nova (LN) and Lake Juparanã (LJ), in southeastern Brazil, aimed at understanding the influence of thermal stratification and wind on carbon dynamics, metabolism, and CO₂ fluxes at the air–water interface. Thermal profiles and metabolic indicators (<i>p</i>O₂, <i>p</i>CO₂, respiration index (RI), dissolved organic carbon (DOC), and chlorophyll-α (Chl-α) were used to clarify when the lakes acted as CO₂ sources or as sinks. The results revealed a marked predominance of CO₂ fluxes in the atmosphere in both systems, with the highest emissions occurring during the mixing events. While LN exhibited stable stratification for most of the year, promoting CO₂ accumulation at depth and episodic releases during overturn, LJ underwent frequent mixing, resulting in more continuous but lower daily emissions than those of LN. The RI indicated that LN was net heterotrophic (RI &lt; 1) during the stratified periods, whereas LJ remained autotrophic (RI &gt; 1).  The Generalized Linear Models analysis highlighted the role of thermal dynamics and wind forcing in modulating CO₂ variability within the water column. These findings underscore the need to incorporate lake-specific physical processes into global carbon models, particularly in tropical systems.</p></div>","PeriodicalId":8262,"journal":{"name":"Aquatic Ecology","volume":"60 2","pages":""},"PeriodicalIF":1.8,"publicationDate":"2026-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10452-026-10276-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147363007","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":"Short-term laboratory assessment of elevated temperature effects on two aquatic plants","authors":"Joanna Rosińska,&nbsp;Eric Puche,&nbsp;Maria A. Rodrigo","doi":"10.1007/s10452-026-10285-3","DOIUrl":"10.1007/s10452-026-10285-3","url":null,"abstract":"<div><p>Elevated water temperature, a primary driver of global climate change, may modify the performance aquatic plants in freshwater systems. Despite growing interest, the influence of warming on the growth and physiological responses of submerged macrophytes in the presence of plant–plant interactions are still not well elucidated. Thus, a two-week experimental study was conducted to assess the effects of elevated temperature on the interaction among <i>Myriophyllum spicatum</i> and <i>Ceratophyllum demersum</i> (collected in the Mediterranean region), growing individually and in coexistence. We hypothesised that (1) plant performance will be enhanced at higher temperature in a short-term exposure, and (2) species-specific responses to warming would occur, particularly under coexistence. To test these hypotheses, plant growth (apical elongation and lateral branch production) and pigment composition (chlorophylls and carotenoids) at 22 °C and 27 °C were examined in controlled laboratory experiments incorporating no-interaction, intraspecific, and interspecific interaction treatments. The studied variables indicated that increased temperature had only a minor effect on plant performance. Even though the temperature was elevated by 5 °C, it remained at a tolerable level for both species and represented only a mild warming for them. However, we observed some species-specific responses depending on the type of interaction. <i>M. spicatum</i> performed better at higher temperature, while <i>C. demersum</i> seemed resistant to change under two different temperatures at least in short-term exposure. Also, the plants were more sensitive to increased temperature under intraspecific interaction. The two-week microcosm experiment effectively captured short-term responses under controlled conditions, which is valuable for initial, exploratory investigation.</p></div>","PeriodicalId":8262,"journal":{"name":"Aquatic Ecology","volume":"60 2","pages":""},"PeriodicalIF":1.8,"publicationDate":"2026-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147362688","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 interactions in boreal wetlands: whooper swan Cygnus cygnus grazing and its effects on vegetation and macroinvertebrates","authors":"Elsie Kjeller,&nbsp;Henric Djerf,&nbsp;Sari Holopainen,&nbsp;Gunnar Gunnarsson","doi":"10.1007/s10452-026-10273-7","DOIUrl":"10.1007/s10452-026-10273-7","url":null,"abstract":"<div><p>The rapid population growth of whooper swan <i>Cygnus cygnus</i> in Fennoscandia raises concerns about their ecological impact on freshwater wetlands. As large herbivores, swans can potentially alter wetland vegetation through intensive grazing, which in turn suggestively affects other trophic levels, including aquatic macroinvertebrates. However, studies examining both direct and indirect effects across trophic levels remain limited. To address this gap, we conducted a field experiment across ten boreal wetlands in Finland during the breeding season (April–August) of 2023, using fenced exclosures to prevent swan grazing, paired with open control plots. We expected that swan exclusion would result in higher vegetation aboveground biomass, cover, height, and species richness, which in turn would support greater abundance and taxon richness of aquatic macroinvertebrates. Our results indicate that swan exclusion led to increases of all vegetation variables, particularly aboveground vegetation biomass. Among vegetation types, the strongest grazing effects were observed for water horsetail <i>Equisetum fluviatile</i> and graminoid species. However, there was weak support for indirect effects on macroinvertebrate abundance and taxon richness. These results suggest that swan herbivory may shape wetland ecosystems primarily by altering vegetation. Further research is needed to particularly assess the long-term consequences of swan herbivory on wetland ecosystem functioning and community composition.</p></div>","PeriodicalId":8262,"journal":{"name":"Aquatic Ecology","volume":"60 2","pages":""},"PeriodicalIF":1.8,"publicationDate":"2026-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10452-026-10273-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147362686","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":"Patterns of benthic and pelagic nitrogen fixation and retention in Lake Mývatn","authors":"K. Riley Book,&nbsp;Jamieson C. Botsch,&nbsp;Ian S. Hart,&nbsp;Árni Einarsson,&nbsp;Anthony R. Ives","doi":"10.1007/s10452-026-10278-2","DOIUrl":"10.1007/s10452-026-10278-2","url":null,"abstract":"<div><p>In nitrogen-limited lakes, cyanobacterial nitrogen (N) fixation rates can be high. However, the effect of cyanobacterial N fixation on ecosystem N availability depends, in part, on the retention of fixed N. Here, we explore patterns of benthic and pelagic N fixation and fixed N retention in Lake Mývatn, Iceland. Our N budget, updated from previous assessments, showed that the annual rate of lake-scale N fixation needed to account for the deficit between external N supply and N loss varies greatly from year to year, primarily due to variation in the magnitude of N loss via outflow and midge emergences that transport and deposit N on the shore. Extrapolations from recent direct measurements of pelagic and benthic N fixation under scenarios of different benthic and pelagic N-fixer abundances showed that the capacity for N fixation is much higher in the pelagic than the benthic zone. We then explored the degree to which N fixed in the pelagic zone is retained and recycled within the lake using a dynamic N budget that leverages data on patterns of N loss via the outlet river Laxá. This revealed that approximately two-thirds of organic N in the pelagic zone must be incorporated into the benthos to explain patterns of N loss via outflow from the river Laxá. Together, these results suggest N fixation in pelagic cyanobacterial blooms may supply most of the N for benthic primary production in Mývatn.</p></div>","PeriodicalId":8262,"journal":{"name":"Aquatic Ecology","volume":"60 2","pages":""},"PeriodicalIF":1.8,"publicationDate":"2026-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10452-026-10278-2.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147337362","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":"Spatiotemporal shifts in macrophyte diversity and water quality of Nilnag Lake, Kashmir: impacts of dredging and anthropogenic pressures over four decades","authors":"Ishfaq Hamid,&nbsp;Bilal Bashir,&nbsp;Adnan Abubakr,&nbsp;Tasaduq Hussain Shah,&nbsp;Rizwana Malik,&nbsp;Bilal Ahmad Bhat,&nbsp;Zaheer Abass,&nbsp;Rinkesh Nemichand Wanjari","doi":"10.1007/s10452-026-10271-9","DOIUrl":"10.1007/s10452-026-10271-9","url":null,"abstract":"<div><p>High-altitude forest lakes are crucial ecological and economic resources. This study examined the physicochemical characteristics of water and changes in aquatic macrophytes in Lake Nilnag, Kashmir, in response to dredging by the Department of Irrigation, Jammu and Kashmir, and anthropogenic pressures. Five sites were studied during 2019–2020 across three seasons (summer, autumn, and winter) in both the littoral and limnetic zones. Eleven macrophyte species were identified, comprising emergent (36%), rooted floating-leaved (36%), and submerged (27%) forms, with their distribution restricted to the littoral zones. Historical comparisons revealed the loss of five species and the gain of three emergents, indicating a shift toward emergent-dominated communities. Phytosociological analyses showed peak metrics in summer for rooted floating-leaved species (e.g. <i>Potamogeton natans</i>: IVI 47.66, density 3.55 plants/m²), with moderate diversity (Shannon H' overall 2.15; highest in autumn, at 2.18). Statistical analyses, including Pearson's correlations and PCA (explaining ~ 99% variance), revealed strong positive links between temperature and rooted floating-leaved species (<i>r</i> &gt; 0.8, <i>p</i> &lt; 0.01) and nutrients (especially phosphorus) with emergents (<i>r </i>up to 0.883, <i>p</i> &lt; 0.01), driving eutrophication and accelerated succession. Nutrient concentrations averaged 201.5 ± 1.55 μg/L nitrate-N, 18.56 ± 0.76 μg/L ammoniacal-N, and 22.53 ± 3.24 μg/L. Dredging, agricultural runoff, and tourism-related eutrophication have significantly altered macrophyte composition and lake dynamics. Collaborative efforts among researchers, the Jammu and Kashmir Department of Irrigation, and non-governmental organizations are essential for the long-term conservation of this forest lake.</p></div>","PeriodicalId":8262,"journal":{"name":"Aquatic Ecology","volume":"60 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147336200","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":"Seasonal dynamics of virioplankton abundance and virus–host coupling in a subtropical meso-eutrophic lagoon","authors":"Cristian Hakspiel-Segura,&nbsp;Aída Martínez-López,&nbsp;Melina López-Meyer","doi":"10.1007/s10452-026-10272-8","DOIUrl":"10.1007/s10452-026-10272-8","url":null,"abstract":"<div><p>Viruses are increasingly recognized as key components of microbial food webs, influencing planktonic community structure and carbon cycling in marine ecosystems; however, their role in subtropical coastal systems of the Gulf of California remains poorly understood. In this study, we examined the seasonal dynamics of virioplankton and their potential influence on the size structure of bacterioplankton and phytoplankton in a meso-eutrophic coastal lagoon. Virioplankton abundances ranged from 2.0 to 16.3 × 10⁷ VLP ml⁻¹ (mean: 7.0 × 10⁷), while bacterioplankton abundances varied from 3.8 to 16.5 × 10⁶ cells ml⁻¹ (mean: 8.7 × 10⁶ cells ml⁻¹). Spatiotemporal patterns in virioplankton abundance and virus-to-host ratios showed pronounced increases during winter–spring, coinciding with elevated dissolved inorganic nitrogen concentrations and higher phytoplankton biomass associated with seasonal runoff and coastal upwelling. Under these conditions, increased virus-to-host ratios suggest enhanced viral–host interactions during periods of high microbial activity. A significant positive association between virioplankton and bacterioplankton abundances (<i>p</i> &lt; 0.05) supports a close coupling between viruses and prokaryotic hosts. Partial redundancy analysis identified dissolved oxygen as the strongest environmental predictor of virus-to-host ratios. In contrast, negative associations with temperature and urea may indicate reduced viral replication efficiency or a greater prevalence of non-lytic infection strategies under warmer, nitrogen-limited conditions. These findings underscore the context-dependent nature of virus–host interactions and stress the need to quantify and integrate viral processes into conceptual and biogeochemical models of coastal ecosystems shaped by anthropogenic nutrient inputs.</p></div>","PeriodicalId":8262,"journal":{"name":"Aquatic Ecology","volume":"60 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2026-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147342685","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":"Ecological conditions and conservation strategies for Aldrovanda vesiculosa in the Danube Delta, Romania","authors":"Simona Dumitrița Chirilă,&nbsp;Mihai Doroftei,&nbsp;Alexandru Bănescu,&nbsp;Oliver Livanov,&nbsp;Nikolay Velev","doi":"10.1007/s10452-026-10274-6","DOIUrl":"10.1007/s10452-026-10274-6","url":null,"abstract":"<div><p><i>Aldrovanda vesiculosa</i> is a critically endangered aquatic plant in the Danube Delta, where it is vulnerable to water level fluctuations. The study was conducted in the Perișor fish farm (Tulcea County) between June and August 2024, within the polders of the fish farm. To identify habitat and phytocoenological preferences, relevés were carried out using a 1 m² plot size. A ProDSS multiparameter digital water quality meter was used to analyze the physicochemical properties of the water, and spectrometric methods were employed to analyze the physicochemical properties of the sediment. Bathymetric measurements were performed using the SonTek Acoustic Doppler Current Profiler (ADCP) RiverSurveyor M9 for the hydrological analysis. <i>Aldrovanda vesiculosa</i> was reported in four EUNIS habitat types. The most favourable habitat was C1.32 free-floating vegetation, where the highest densities and individual lengths were reported. In habitat Q53 (Tall sedge beds), the lowest values for density and length of individuals of <i>A. vesiculosa</i> were recorded. Cluster analysis revealed six associations, such as <i>Typhetum angustifoliae</i>, <i>Spirodelo</i>-<i>Aldrovandetum</i>, <i>Caricetum ripariae</i>, <i>Schoenoplectetum lacustris</i>, <i>Nymphaeetum albae,</i> and <i>Phragmitetum australis</i>. Length of individuals ranged from 4 to 21 cm, and number of individuals per m² ranged from 3 to 300 individuals per m². Physicochemical analysis of the water showed that <i>A. vesiculosa</i> occurred under moderate temperatures (22<b>–</b>27 °C) and alkaline pH values (7.8<b>–</b>11.6), with variable, sometimes elevated ammonium and nitrate concentrations and shallow waters (7–30 cm). Correlation analysis indicated that the length of <i>A. vesiculosa</i> individuals was more sensitive to environmental gradients than the number of individuals per m². Thus, the minimum and medium length of individuals showed significant negative relationships with water conductivity, while the medium length of individuals also decreased with increasing water depth and transparency. In contrast, the number of individuals per m² was weakly correlated with most environmental variables. In conclusion, the results underline the importance of habitat quality and hydrological stability for the conservation of <i>A. vesiculosa</i> in the Danube Delta, supporting the need for continuous monitoring and targeted conservation measures. Comparisons between the main Perișor Channel and the polders indicate that maintaining controlled connectivity and water-level management at the main-channel connections may be crucial for hydrological stability and habitat quality in <i>A. vesiculosa</i> sites.</p></div>","PeriodicalId":8262,"journal":{"name":"Aquatic Ecology","volume":"60 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2026-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147342018","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":"Integrating PLI, Igeo, and PERI indices to evaluate environmental risks in freshwater ecosystems: Zooplankton as a Biotic Community","authors":"Sk Saruk Islam,&nbsp;Sujoy Midya","doi":"10.1007/s10452-026-10275-5","DOIUrl":"10.1007/s10452-026-10275-5","url":null,"abstract":"<div><p>The present study investigates the distribution of zooplankton communities and heavy metals (HMs) contamination across aquatic ecosystems (pond, canal, and waterlogged sites) in four regions of East Medinipur, West Bengal—Tamluk, Haldia, Contai, and Egra. Zooplankton distribution showed clear group-specific and seasonal variations: Rotifer dominated with maximum densities up to 52.33 ± 8.33 ind./L, followed by Copepod (45.67 ± 2.08 ind./L) and Cladocera (21.33 ± 11.15 ind./L). Post-monsoon (POM) supported peak rotifer populations, whereas pre-monsoon (PEM) favoured copepods. The dominant taxa, including <i>Heliodiaptomus viduus</i>, <i>Brachionus calyciflorus</i>, and <i>Moina brachiata</i>, served as biotic indicators of environmental conditions. Haldia showed higher pollution and organic load, while Egra and Contai exhibited better water quality with stable physicochemical conditions. Heavy metal concentrations varied widely, with Zn (3.45–16.01 mg/L) and Ni (3.41–10.75 mg/L) dominating the contamination profile, while Hg (0.07–2.93 mg/L) and Fe (0.09–0.89 mg/L) remained comparatively low. Pollution Load Index (PLI) values ranged from 0.039 to 1.213, classifying most sites as unpolluted, except localized moderate pollution in Haldia and Contai. Potential Ecological Risk Index (PERI) spanned from 5.85 (Egra) to 252.80 (Haldia), indicating highest ecological risk in canal and waterlogged ecosystems. Geo-accumulation Index (Igeo) suggested study sites were largely uncontaminated, with cadmium enrichment (0.61–0.86) confined to Haldia. Correlation and redundancy (RDA) analyses demonstrated strong negative associations between zooplankton abundance and metals. Overall, the study highlights that zooplankton, particularly rotifers and copepods, serve as sensitive bioindicators of heavy metal stress in freshwater systems influenced by industrial and anthropogenic activities.</p></div>","PeriodicalId":8262,"journal":{"name":"Aquatic Ecology","volume":"60 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2026-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147342029","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":"Ecology and seasonal dynamics of gastrointestinal helminths in freshwater fish from the Gomti river and wetlands, Lucknow, India","authors":"Pradeep Kumar,&nbsp;Neeshma Jaiswal,&nbsp;Amar Singh,&nbsp;Sapna Mishra","doi":"10.1007/s10452-026-10277-3","DOIUrl":"10.1007/s10452-026-10277-3","url":null,"abstract":"<div><p>Helminth infections in freshwater fish affect fish health, aquaculture productivity, and food safety. This study examined the ecology of gastrointestinal helminths infecting freshwater fish along with other food fishes from the Lucknow region, India. The fish were sampled monthly (January-December 2024) and seasonally from fishers from the Gomti river wetlands. Fish were necropsied, and helminths were identified using standard taxonomic methods. Four major helminth groups trematodes, cestodes, nematodes, and acanthocephalans were detected. Prevalence peaked in snakeheads (65–75%; mean intensity (6–10 worms/host), followed by catfishes (60–80%) and carps (55–70%); salmonids showed the lowest (30–40%). Monsoon seasons showed infection peaks up to 85%, linked to intermediate-host abundance and favorable water conditions. Larger carnivorous hosts, lentic habitats, and cultured ponds were associated with higher burdens, notably <i>Bothriocephalus acheilognathi</i> in cultured carps. The role of host traits, environment in helminth transmission and the need for seasonal parasite-control strategies in northern India were emphasized.</p></div>","PeriodicalId":8262,"journal":{"name":"Aquatic Ecology","volume":"60 1","pages":""},"PeriodicalIF":1.8,"publicationDate":"2026-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147342084","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}