Aquatic EcologyPub Date : 2024-07-22DOI: 10.1007/s10452-024-10125-2
João Rato, Pedro Brandão, Pedro M. Anastácio, Filipe Banha
{"title":"First records of Mauremys sinensis in Portugal: a consequence of inadequate policies applied to the exotic pet market","authors":"João Rato, Pedro Brandão, Pedro M. Anastácio, Filipe Banha","doi":"10.1007/s10452-024-10125-2","DOIUrl":"10.1007/s10452-024-10125-2","url":null,"abstract":"<div><p>Commercial success of a pet species predicts its invasiveness, making the most traded species more likely to become introduced. Turtles are among the most traded species, making it critical to monitor their introduction, and in Portugal several invasive turtle species have been detected in nature. This study reports the first official record of <i>Mauremys sinensis</i> and lists its unofficial records in Portugal. This is a critically endangered species in its native range but invasive out of its native range. Two <i>M. sinensis</i> individuals (one adult male and a juvenile) were found in a lake near Évora, alongside native <i>Mauremys leprosa</i>. Additionally, iNaturalist database analysis revealed 14 citizen science records of this species in 10 municipalities in Portugal since 2021 These records were located from North to South of continental Portugal but also in the Madeira Island. The presence of invasive turtles can impact native species through competition, predation, disease transmission, and hybridization. Pet trade is the primary source of these species, and legislation has been ineffective in preventing their introduction. This study also highlights the need for comprehensive strategies, including whitelists and blacklist, to address the invasive pet trade, protect native ecosystems, and prevent further introductions of species like <i>M. sinensis</i>.</p></div>","PeriodicalId":8262,"journal":{"name":"Aquatic Ecology","volume":"58 4","pages":"1091 - 1096"},"PeriodicalIF":1.7,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141745353","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}
Aquatic EcologyPub Date : 2024-07-16DOI: 10.1007/s10452-024-10124-3
Sadia Bagagnan, Sabrina Guerin-Rechdaoui, Anthony Marconi, Vincent Rocher, Stéphanie Giusti-Miller, Régis Moilleron, My Dung Jusselme
{"title":"Overview of microbial communities in the surface water of the Seine River to understand their response to climate change and human activities","authors":"Sadia Bagagnan, Sabrina Guerin-Rechdaoui, Anthony Marconi, Vincent Rocher, Stéphanie Giusti-Miller, Régis Moilleron, My Dung Jusselme","doi":"10.1007/s10452-024-10124-3","DOIUrl":"10.1007/s10452-024-10124-3","url":null,"abstract":"<div><p>Diverse microbial communities play a crucial role in maintaining the proper functioning of river ecosystems and are considered important indicators of river water quality. Although the Seine River being heavily impacted by human activities, little is known about the microbial communities in its surface waters. In order to monitor water quality and promote sustainable use, we studied its microbial diversity using high-throughput sequencing technology, and explored their relationships with physico-chemical properties. The dominant phyla identified were <i>Proteobacteria</i>, <i>Actinobacteriota</i>, <i>Bacteriodota</i>, and <i>Cyanobacteria</i>. The presence of the <i>Alphaproteobacteria</i> and <i>Gammaproteobacteria</i> indicates that the Seine River water nutrient profile is mainly determined by the recalcitrant organic compounds present in WWTP effluents. Bacterial diversity showed significant temporal variability with a highly significant difference in bacterial composition between 2020 and 2021, probably due to variations in water flow favoring <i>Cyanobacteria</i> growth. Summer displayed higher microbial activity and abundance than autumn, attributed to temperature and orthophosphate content. Spatial variation in bacterial composition was observed between sites upstream and downstream of Paris, as well as before and after of the Seine Valenton-WWTP, subject to an accumulation phenomenon and impacted by wastewater treatment. Further assessment of emerging contaminants and other pollutants is required to better understand these variations. These results provide a basic understanding of the microbial community in the Seine River, serving as a reference for assessing the impact of implementing new wastewater disinfection techniques in the near future.</p><h3>Graphical abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":8262,"journal":{"name":"Aquatic Ecology","volume":"58 4","pages":"1067 - 1089"},"PeriodicalIF":1.7,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10452-024-10124-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141641428","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}
Aquatic EcologyPub Date : 2024-07-13DOI: 10.1007/s10452-024-10123-4
K. S. Amal, Niya Benny, P. Ajayakumar, Lathika Cicily Thomas, K. B. Padmakumar
{"title":"Ephemeral analysis on microphytobenthos in an estuarine system along the southwest coast of India","authors":"K. S. Amal, Niya Benny, P. Ajayakumar, Lathika Cicily Thomas, K. B. Padmakumar","doi":"10.1007/s10452-024-10123-4","DOIUrl":"10.1007/s10452-024-10123-4","url":null,"abstract":"<div><p>The study provides significant insights into the community structure, species diversity and the environmental factors affecting the diversity of MPB in the tropical estuarine habitat of the Cochin estuary. A significant outcome of the present study was the taxonomic identification of 59 species of MPB belonging to 22 genera, which comprised 49 species of diatoms, one species of dinoflagellate, six species of cyanobacteria, two species of euglenophytes and one species of chlorophyte. Major MPB identified in the study were <i>Navicula erifuga, Gyrosigma wansbeckii, Navicula flanatica, Nitzschia sigma, Nitzschia fluminensis, Amphora cymbifera, Nitzschia clausii, Nitzschia lorenziana, Navicula arenaria</i> and <i>Gyrosigma balticum.</i> Principal component analysis indicated that the porewater salinity, sediment temperature, sediment pH, dissolved oxygen (DO), C:N ratio, porewater silicate and sediment chlorophyll <i>a</i> were positively correlated with the diversity of MPB. The intensity of rainfall, OC%, C:S ratio, and TN% were negatively correlated with the diversity of MPB. The study provides a detailed taxonomic inventory of MPB diversity and environmental influences, offering additional insights into tropical estuarine ecology.</p></div>","PeriodicalId":8262,"journal":{"name":"Aquatic Ecology","volume":"58 4","pages":"1049 - 1065"},"PeriodicalIF":1.7,"publicationDate":"2024-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141612022","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}
Aquatic EcologyPub Date : 2024-07-12DOI: 10.1007/s10452-024-10120-7
Henrique Paulo Silva de Melo, Ricardo Massato Takemoto, Gabriela Silva Ribeiro Gonçalves, Renata Guimaraes Frederico, Lucena Rocha Virgilio
{"title":"Effects of climate change on the distribution of Hoplias malabaricus and its ecto- and endoparasite species in South America","authors":"Henrique Paulo Silva de Melo, Ricardo Massato Takemoto, Gabriela Silva Ribeiro Gonçalves, Renata Guimaraes Frederico, Lucena Rocha Virgilio","doi":"10.1007/s10452-024-10120-7","DOIUrl":"10.1007/s10452-024-10120-7","url":null,"abstract":"<div><p>Parasites are facing a loss in biodiversity in a changing climate. In this context, the present study aimed to evaluate the influence of climate change on <i>Hoplias malabaricus</i> and its species of monogenetic and digenetic parasites. The models were developed for South America and the species occurrence data were obtained from databases and digital platforms. The bioclimatic, edaphic, elevation, and slope variables were obtained from specialized platforms. Thus, to generate species distribution models, Support Vector Machine, Random Forest and Generalized Linear Model algorithms were used. All predictions of the model for a species were combined to obtain its final model (Ensemble) for the present and future scenarios. As a result, definitive hosts of the parasites showed high climatic suitability. The broad niche of these species indicated that these organisms can show certain opportunistic and generalist characteristics. Unlike their parasites that revealed a more restricted distribution than their host. Also, in a future scenario, endoparasite species will generally reduce 99% of their populations, ectoparasites 93%, while some hosts will increase their populations. In conclusion, the study assumed that future climatic events can influence parasites and their hosts differently, whereas anthropization can influence parasite extinction even without directly affecting their hosts.</p></div>","PeriodicalId":8262,"journal":{"name":"Aquatic Ecology","volume":"58 3","pages":"999 - 1011"},"PeriodicalIF":1.7,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141612023","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}
Aquatic EcologyPub Date : 2024-07-09DOI: 10.1007/s10452-024-10122-5
Ying-Ying Qin, Ge-Ge Zhu, Ming-Zhong Liang, Hai-Lei Zheng, Jun-Wei Li
{"title":"Response strategies of leaf vein traits and stomatal traits of Aegiceras corniculatum to shrimp aquaculture wastewater discharge","authors":"Ying-Ying Qin, Ge-Ge Zhu, Ming-Zhong Liang, Hai-Lei Zheng, Jun-Wei Li","doi":"10.1007/s10452-024-10122-5","DOIUrl":"10.1007/s10452-024-10122-5","url":null,"abstract":"<div><p>Sediments, waters and vegetation work together and cooperate mutually to maintain normal function of mangrove wetland ecosystem. To gained a comprehensive understanding of the response strategies existed by the leaf traits of <i>Aegiceras corniculatum</i> and to identity the key factors that drive leaf traits variation in the response to shrimp aquaculture wastewater, we sampled leaves of <i>A. corniculatum</i>, sediments and interstitial water from non-discharge area (CK), direct discharge area (DDA) and landfill restoration area (LRA) in Qinzhou Bay in southeast coast of China. We established a correlation between leaf vein traits and stomatal traits and abiotic conditions such as pH, nutrient content in sediment. In comparison to CK and LRA, leaf vein traits (primary vein diameter, secondary vein diameter, tertiary vein diameter, enclosed circular area, vein spacing, and tertiary vein density) exhibited a decrease in DDA. This observation suggests that the persistent discharge of shrimp aquaculture wastewater exerts a detrimental impact on the leaves’ mechanical support, nutrient, and water transport capacity. Furthermore, a marked negative correction emerges between stomatal density and length. In contrast, within LRA, an increase in stomatal density and a corresponding reduction in stomatal length indicate a heightened transpiration function of the leaves, thereby enhancing the efficiency of water and inorganic salt transport. Subsequently, the leaf vein traits in LRA are observed to be higher than in CK, suggesting that the leaf traits of <i>A. corniculatum</i> has undergone pre-adaptation to DDA and possesses high phenotypic plasticity. Through the analysis of leaf vein and stomatal traits in diverse shrimp aquaculture wastewater discharge habitats, this study demonstrates that such pre-adaptation and elevated phenotypic plasticity facilitates the adaptation of <i>A. corniculatum</i> to the challenging shrimp aquaculture wastewater environment.</p></div>","PeriodicalId":8262,"journal":{"name":"Aquatic Ecology","volume":"58 4","pages":"1033 - 1048"},"PeriodicalIF":1.7,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141567180","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}
Aquatic EcologyPub Date : 2024-07-02DOI: 10.1007/s10452-024-10121-6
Dani Benchamin, R. Sreejai, M. S. Arya
{"title":"Spatial and temporal variation in diversity and abundance of Malacostraca associated with environmental variables in a tropical River in South India","authors":"Dani Benchamin, R. Sreejai, M. S. Arya","doi":"10.1007/s10452-024-10121-6","DOIUrl":"10.1007/s10452-024-10121-6","url":null,"abstract":"<div><p>Malacostracans are significant in several environmental processes, making them a major biotic component in aquatic ecosystems. An investigation on the spatio-temporal variations in the diversity and abundance of malacostraca was carried out in the Kallada River for a period of two years from 2019 to 2021. The malacostracan community was represented by 35 species in 17 families and 4 orders during the investigation period. Decapods (24 species), amphipods (7 species), isopods, and tanaids (2 species each) were identified from the Kallada River. Seasonally, PoM (Post-monsoon) witnessed the presence of 33 species closely followed by PrM (Pre-monsoon) and MoN (Monsoon) with 32 species each. The amphipod species <i>Melita zeylanica</i> belonging to the family Melitidae dominated in terms of abundance throughout the study period. Diversity, richness, and dominance indices were increased from the upstream to downstream sites. Contrarily, the highest values of evenness were recorded the upstream and lowest recorded downstream. Diversity analysis values were maximum at downstream sites during the PrM season while the abundance was maximum during the PoM season. Multivariate tools such as CCA (canonical correspondence analysis) and hierarchical clustering were applied to investigate the co-existence of various malacostracan taxa and the relation between the species and water quality parameters. Similar feeding habits and water quality requirements allowed the co-occurrence of malacostracan species. CCA indicates the freshwater and estuarine influences on malacostracan diversity and abundance. The study also assessed the detrimental effects of sewage and municipal effluents on malacostraca at the midstream stations. However, the low diversity at the upstream stations was attributed to the natural environmental conditions.</p></div>","PeriodicalId":8262,"journal":{"name":"Aquatic Ecology","volume":"58 4","pages":"1013 - 1031"},"PeriodicalIF":1.7,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141509103","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}
Aquatic EcologyPub Date : 2024-06-20DOI: 10.1007/s10452-024-10117-2
Qasim Khan, Saltanat Parveen
{"title":"Zooplankton composition, abundance and diversity in Sagartaal, Budaun district, Uttar Pradesh, India","authors":"Qasim Khan, Saltanat Parveen","doi":"10.1007/s10452-024-10117-2","DOIUrl":"10.1007/s10452-024-10117-2","url":null,"abstract":"<div><p>Sagartaal is located in Budaun with geographical coordinates 28.0512°N and 79.1305°E in Nawada region, Uttar Pradesh, Uttar Pradesh, India. Understanding the composition, diversity, and abundance of the zooplankton is vital for better utilization of such waterbodies. The present study was carried out from October 2022 to September 2023. A total of 24 species belonging to 16 species of Rotifera, 4 species of Cladocera, 2 species of Copepoda, and 2 species of Ostracoda were recorded. The prominent species were <i>Brachionus forficula</i>, <i>B. calyciflourus</i>, <i>Keratella cochlearis</i>, <i>Simocephalus</i> sp., <i>Cyclops</i> sp., and <i>Mesocyclops</i> sp. Zooplankton showed seasonal variations in their species composition, abundance, and diversity concerning water temperature, pH, total alkalinity, dissolved oxygen, and hardness. The zooplankton density was recorded as maximum in winter and minimum in monsoon. Statistically, zooplankton shows significant correlations as Rotifera with EC, BOD (<i>r</i> =− 0.50; − 0.58, respectively); while with total hardness (<i>r</i> = 0.75); Cladocera with DO (<i>r</i> = 0.53), alkalinity (<i>r</i> = 0.57), nitrate (<i>r</i> = 0.56), and phosphate (<i>r</i> = − 0.49). The highest Shannon index (2.83) was obtained for summer, due to the lowest value of the dominance index (0.07) for this season. More studies are warranted on Monitoring such ecosystems as Sagartaal to understand the effects of anthropogenic pressure on zooplankton's community structure, can help in identifying the indicator species to formulate effective conservation planning.</p></div>","PeriodicalId":8262,"journal":{"name":"Aquatic Ecology","volume":"58 3","pages":"949 - 962"},"PeriodicalIF":1.7,"publicationDate":"2024-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141509104","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":"Response of periphyton fatty acids to experimental changes in aqueous phosphorus","authors":"Bowei Zhou, Yu Wang, Jiaqi You, Feilong Li, Wei Gao, Qingping Du, Yuan Zhang, Fen Guo","doi":"10.1007/s10452-024-10115-4","DOIUrl":"10.1007/s10452-024-10115-4","url":null,"abstract":"<div><p>Periphyton is an important basal food source for many aquatic consumers by directly or indirectly providing long-chain polyunsaturated fatty acids (LC-PUFA). Although periphyton LC-PUFA content is highly sensitive to aqueous nutrients, the majority of prior studies have been conducted in low-nutrient aquatic environments. Less is known about how periphyton LC-PUFA content may change in response to higher nutrient concentrations in rivers. We conducted a periphyton culturing experiment by manipulating a gradient of aqueous nutrient concentrations from 0.002 to 0.18 mg P/L to investigate how aqueous nutrients affected periphyton FA from oligotrophic to eutrophic waters. Our results showed a significant curvilinear relationship between aqueous water nutrients and periphyton FA. In oligotrophic conditions, periphyton LC-PUFA increased as aqueous nutrients increased, whereas in eutrophic waters, periphyton LC-PUFA decreased as aqueous nutrients increased. The change of taxonomic composition, especially the increase of diatom density, was a significant factor influencing periphyton LC-PUFA content. Additionally, periphyton biomass experienced a significant increase with elevated aqueous nutrients, which differed from periphyton LC-PUFA. Our study detected the response of periphyton FA to aqueous nutrients from oligotrophic to eutrophic conditions, and provided a reference for the protection of river ecosystems.</p></div>","PeriodicalId":8262,"journal":{"name":"Aquatic Ecology","volume":"58 3","pages":"917 - 929"},"PeriodicalIF":1.7,"publicationDate":"2024-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141509105","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}
Aquatic EcologyPub Date : 2024-06-14DOI: 10.1007/s10452-024-10116-3
Mohammad Ali, Matrah Al-Mutairi, M. N. V. Subrahmanyam
{"title":"Seasonal variation of intertidal Gastropoda at rocky and sandy habitats of Umm Al-Namil Island, Kuwait, north-western Arabian Gulf","authors":"Mohammad Ali, Matrah Al-Mutairi, M. N. V. Subrahmanyam","doi":"10.1007/s10452-024-10116-3","DOIUrl":"10.1007/s10452-024-10116-3","url":null,"abstract":"<div><p>Gastropoda assemblages were investigated for four seasons in 2016–2017 (autumn, winter, spring, and summer) near Umm Al-Namil Island in Kuwait in rocky and sandy habitats to study the effect of season and habitat type on species richness, abundance, evenness, and diversity. A total of 28 gastropod species belonging to 14 families were identified (26 in sandy, 20 in rocky, 18 in common between both habitats). <i>Clypeomorus bifasciata</i> (31.07%) and <i>Trochus erithreus</i> (21.43%) were the most abundant species in the rocky habitat. <i>Pirenella arabica</i> (27.51%), <i>C</i>.<i> bifasciata</i> (26.15%) and <i>Mitrella blanda</i> (15.66%) dominated the sandy habitat. At the rocky habitat, total abundance ranged from 6.5 ± 4.71 to 40 ± 45.17 ind m<sup>−2</sup> in autumn and summer, respectively. As for the sandy habitat, total abundance varied from 53.0 ± 22.60 to 294.0 ± 316.67 ind m<sup>−2</sup> in summer and winter, respectively. The results of the rocky habitat showed that diversity and evenness were strongly affected by season more than habitat type. Species richness and abundance were strongly influenced by habitat type rather than the season. However, the sandy habitat had a higher value of abundance, diversity, species richness, and evenness throughout the sampling period than the rocky habitat. There was almost a distinction between the species resident in both habitats throughout the study. These findings could be attributed mainly to the feeding habits of these gastropods and their burrowing nature.</p></div>","PeriodicalId":8262,"journal":{"name":"Aquatic Ecology","volume":"58 3","pages":"931 - 948"},"PeriodicalIF":1.7,"publicationDate":"2024-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141338869","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}
Aquatic EcologyPub Date : 2024-06-07DOI: 10.1007/s10452-024-10112-7
Julia Martini Falkenberg, Vitória Maria Moreira de Lima, Fábio Hideki Yamada, Telton Pedro Anselmo Ramos, Ana Carolina Figueiredo Lacerda
{"title":"Changes in parasite communities of fishes from an intermittent river in the Brazilian semi-arid, after a major interbasin water transfer","authors":"Julia Martini Falkenberg, Vitória Maria Moreira de Lima, Fábio Hideki Yamada, Telton Pedro Anselmo Ramos, Ana Carolina Figueiredo Lacerda","doi":"10.1007/s10452-024-10112-7","DOIUrl":"10.1007/s10452-024-10112-7","url":null,"abstract":"<div><p>Rivers interlinking by transposition projects have multiplied in the world, altering the landscape and flow regime of continental water systems. Recently, an intermittent river in northeastern Brazil has been artificially connected to the São Francisco River basin in a water transfer project. Thus, this study aims to provide an inventory of the fish parasites from the Jaguaribe River basin in the scenarios of pre- and post-transposition, and to evaluate the short-term impacts on the parasite fauna. Of the analyzed fishes, belonging to 31 species, about 30% were parasitized. A total of 47 parasite taxa were recovered, including monogeneans (17), digeneans (9), nematodes (9), acanthocephalans (3) and crustaceans (6), and unidentified cysts of Acanthocephala, Cestoda and Digenea, representing the description of 30 new geographic records and 104 new parasite-host associations. By expanding the range of the geographic distribution of fish parasites and increasing the list of hosts, the study contributes to the knowledge of fish parasites biodiversity in the semi-arid region of Brazil and in the Caatinga domain. Considering all parasite species, significant differences were observed in total prevalence, total mean abundance, diversity index and host specificity index; the highest values of total prevalence and total mean abundance were observed in the post-transposition, while the diversity index and host specificity index was higher in the pre-transposition period. This is the first study evaluating fish parasites before and after a major water transfer event and the results will allow further evaluation of middle and long-term changes in the specific composition of fish and parasites from the receiver drainages.</p></div>","PeriodicalId":8262,"journal":{"name":"Aquatic Ecology","volume":"58 3","pages":"895 - 916"},"PeriodicalIF":1.7,"publicationDate":"2024-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141371807","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}