Limnology最新文献

{"title":"Development of specific detection assays from environmental DNA of invasive diatom Cymbella janischii in Japan","authors":"Yoko Kato-Unoki, Shigeki Mayama, Akira Kurihara, Toshifumi Minamoto","doi":"10.1007/s10201-024-00751-y","DOIUrl":"https://doi.org/10.1007/s10201-024-00751-y","url":null,"abstract":"","PeriodicalId":18079,"journal":{"name":"Limnology","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140972181","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":"How the morphology of two closely related riverine sympatric species are reflected in ecological niche overlapping? A case study of two Capoeta species","authors":"Atta Mouludi-Saleh, Soheil Eagderi, Hadi Poorbagher","doi":"10.1007/s10201-024-00750-z","DOIUrl":"https://doi.org/10.1007/s10201-024-00750-z","url":null,"abstract":"<p>This study investigated morphological differences, habitat preference, and ecological niche overlap in two sympatric <i>Capoeta</i> species i.e., <i>Capoeta. damascina</i> and <i>Capoeta umbla</i> collected from the Sirvan river drainage. Ten environmental factors, including pH, temperature, electrical conductivity (EC), total dissolved solids (TDS), river width, river depth, flow velocity, altitude, slope, and dissolved oxygen (DO) were measured during sampling time. A total of 17 morphometric characteristics were measured using digital calipers for traditional morphometrics (TM). For the geometric morphometric method (GM), 2D pictures were taken from the left side of the fresh samples, by tpsDig2 software, and 16 landmark points were defined and digitalized to extract body shape data. The data were analyzed using <i>t</i>-test, Mann–Whitney, principal component analysis (PCA), and discriminant function analysis based on the <i>P</i>-value of Hotelling’s T-squared. The ratio of the common area under the graph to the total area of habitat suitability indices was defined as the ecological niche overlap. The results showed significant differences in eye diameter, predorsal, caudal peduncle length, preanal, preventral, ventral-pectoral, body depth, and caudal peduncle depth traits (<i>P</i> &lt; 0.05) in TM, and those differences in the GM were related to the position of the snout, head and body depth and caudal peduncle length i.e., <i>C. damascina</i> had the deeper body shape and head, and anterior the snout and caudal peduncle length. Based on the results, <i>C. damascina</i> prefers areas with higher pH and temperature and by increasing other studied factors, its habitat suitability decreased. The preference for <i>C. umbla</i> with increasing river depth and DO was increased. These two species showed low niche overlap i.e., they avoid competition in their habitat by opting for different areas in terms of river width, flow velocity, and temperature that have more depth with higher slope microhabitats.</p>","PeriodicalId":18079,"journal":{"name":"Limnology","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140883406","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":"First report of the invasive freshwater sponge Heterorotula multidentata (Weltner, 1895) in Europa: a latent threat for aquatic ecosystems?","authors":"J. L. Carballo, J. A. Cruz-Barraza, C. Domínguez-Monge, C. Cano, P. J. López-González","doi":"10.1007/s10201-024-00746-9","DOIUrl":"https://doi.org/10.1007/s10201-024-00746-9","url":null,"abstract":"<p>Freshwater invaders threaten both natural ecosystems and human activities. An invasive freshwater sponge <i>Heterorotula multidentata</i> (Weltner, 1895) has been found for the first time in continental waters of Europe (Spain). It is a species native to Australia and New Zealand, from which it spread to Japan, being considered invasive. The species has been found in water intake grids of irrigation and drinking water systems in the basins of the Guadalquivir and Tajo rivers, affecting their hydrological functions. It has also been found growing on the invasive mussel <i>Dreissena polymorpha</i> in the Guadalquivir River. To assess the risks associated with invasive alien organisms, a detailed knowledge of their taxonomic status and distribution is necessary. A morphological and molecular evaluation confirmed that the specimens found in Spain belong to the Japanese type. A full morphological description and the fouling problems caused by the species are also provided. It is not yet clear how <i>H. multidentata</i> arrived at Spain, but indirect transport by other invasive freshwater species cannot be ruled out either, as <i>H. multidentata</i> has been found fouling the invasive species zebra mussel.</p>","PeriodicalId":18079,"journal":{"name":"Limnology","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140812808","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 study on spatio-temporal variations in physicochemical parameters and ciliate community structure of three freshwater bodies from Delhi, India","authors":"Jeeva Susan Abraham, Sripoorna Somasundaram, Swati Maurya, Renu Gupta, Ravi Toteja, Seema Makhija","doi":"10.1007/s10201-024-00747-8","DOIUrl":"https://doi.org/10.1007/s10201-024-00747-8","url":null,"abstract":"<p>The present investigation studied the spatial and temporal variation in physicochemical parameters and ciliate community structure at three freshwater sites in Delhi, India. Samples were collected from three freshwater sites, Okhla Bird Sanctuary (OBS), Sanjay Lake (SL) and Raj Ghat (RJ) in alternate months over 1 year, from September 2018 to August 2019. The water at the OBS site exhibited the lowest pH and electrical conductivity, along with the highest concentration of ammonium. The water at RJ was higher in suspended solids, electrical conductivity, and pH than the other two sites. Ciliates belonging to classes Spirotrichea, Oligohymenophorea, and Prostomatea were dominant in these freshwater samples. Maximum ciliate diversity, richness and evenness were observed in the OBS site. The highest diversity was observed during the monsoon and post-monsoon seasons, whilst the lowest was during the winter and summer season.</p>","PeriodicalId":18079,"journal":{"name":"Limnology","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-04-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140629487","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":"Forest expansion affects Odonata assemblage in floodplain: a case study in the Kiso River, central Japan","authors":"Wataru Higashikawa, Yuki Matsuzawa, Terutaka Mori","doi":"10.1007/s10201-024-00748-7","DOIUrl":"https://doi.org/10.1007/s10201-024-00748-7","url":null,"abstract":"<p>In floodplains, which are highly modified and less inundated, trees are expanding, thus raising concerns regarding their impact on freshwater organisms. We analyzed the relationship between forest expansion and the change in Odonata (dragonflies and damselflies) assemblage over an extended period of time in the floodplain with ponds of the Kiso River, central Japan. In the 1970s, the ponds were mainly surrounded by grasslands, and approximately 80% of Odonata species were non-forest species. However, the number of forest species increased and that of non-forest species largely decreased with the forest expansion over the past five decades, resulting in almost a similar number of forest and non-forest species in 2021. Whereas the abundance of the non-forest species had been greater than that of the forest species until the 2000s, the difference has been much smaller in the 2010s, and the non-forest species occupied approximately only 30% of the number of individuals in 2021. The forest expansion may have reduced the open-lentic habitats for the non-forest species, which require riparian grasslands for resting, foraging, and reproduction, and may disturb the immigration of non-forest species from the adjacent rice paddy fields and rivers. The development of canopy cover over the waterbodies may have decreased the light and temperature above and within the ponds, which might have caused a decline in species that prefer warm and open-water environments. Maintaining shifting-mosaic patterns of vegetation around the floodplain waterbodies through active management may be effective in conserving floodplain Odonata communities, including both forest and non-forest species.</p>","PeriodicalId":18079,"journal":{"name":"Limnology","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140609659","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":"Effect of increasing temperature on periphyton accrual under controlled environmental conditions","authors":"L. D. Sapucaia, R. O. Carneiro, C. Ferragut","doi":"10.1007/s10201-024-00749-6","DOIUrl":"https://doi.org/10.1007/s10201-024-00749-6","url":null,"abstract":"<p>Global warming can affect biomass accumulation and the dynamics of periphytic communities, potentially altering their role in aquatic ecosystem functioning. We conducted a 38-day mesocosm experiment to investigate the effects of an increase in winter temperature on periphyton biomass accumulation under eutrophic conditions. We evaluated the warming effect on colonization phases, identifying the most affected phase. The experiment had two treatments (control: current winter temperature of 23.5 ℃, warming: + 5.7 ℃ under IPCC scenario). It was carried out in growth chambers under controlled temperature, light, and humidity. Periphyton and water samplings were performed on days 3, 6, 9, 13, 17, 21, 27, and 38. The increase in temperature did not affect the organic matter accrual rate of the periphyton. However, it negatively affected the net and gross accrual rate of the algal biomass. Ash-free dry mass and chlorophyll-<i>a</i> ratio in the periphyton increased at higher temperatures, indicating a decrease in autotrophic components in the periphyton in the warming treatment. We detected losses in algal biomass during the intermediate and advanced colonization phases. Our results showed a decrease in periphytic algal biomass with an increase in average temperature in winter. In conclusion, a warming scenario can negatively influence periphyton biomass in eutrophic ecosystems, where algal growth in the community is generally unfavorable.</p>","PeriodicalId":18079,"journal":{"name":"Limnology","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140568516","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":"Ten-year ecological investigation into eight-barbel loach, Lefua tokaiensis (Nemacheilidae, Cypriniformes)","authors":"Jun-Ichi Miyazaki, Kenta Ogata, Ayaka Takano, Yutaro Hosaka, Yuta Gunji, Ryuki Sakai, Kenya Murata, Nichika Takano, Ryo Hirai, Seiya Hida","doi":"10.1007/s10201-024-00742-z","DOIUrl":"https://doi.org/10.1007/s10201-024-00742-z","url":null,"abstract":"<p>The ecological characteristics of the eight-barbel loach <i>Lefua tokaiensis</i> Ito, Hosoya, and Miyazaki were elucidated. Ecological field research was conducted at two localities: the montane stream of Houraiji and the Arao River of the Toyo River system in the Tokai region of Japan. The two localities showed high population density of <i>L. tokaiensis</i>, consisting of young-to-aged individuals. Loaches were likely to reproduce and migrate both upstream and downstream throughout year. Their lifespan was over 10 years, and loaches of more than ten generations simultaneously lived together. Growth rates slowed down strikingly with increasing age. The montane stream of Houraiji was suitable for the population of <i>L. tokaiensis.</i> The results of this study contribute to the protection of this endangered species.</p>","PeriodicalId":18079,"journal":{"name":"Limnology","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140568398","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":"The first finding of the red swamp crayfish Procambarus clarkii in Greece calls for rapid measures","authors":"Ioannis Karaouzas, Yiannis Kapakos, Konstantinos Fytilis, Ioannis Leris, Nektarios Kalaitzakis, Petros Kouraklis, Costas Perdikaris, Eleni Kalogianni","doi":"10.1007/s10201-024-00744-x","DOIUrl":"https://doi.org/10.1007/s10201-024-00744-x","url":null,"abstract":"<p>This contribution presents the first record of the invasive non-native red swamp crayfish <i>Procambarus clarkii</i> (Girard, 1852) in Greece and the Balkans. The crayfish was found during a fish monitoring expedition in the lower reaches of the Vosvozis River, near the city of Komotini, Thrace (northeastern Greece). The finding of <i>P. clarkii</i> in Greece expands the southernmost geographical range of the species in the Balkans and calls for immediate actions in preventing its further expansion to other water bodies and towards strict control of aquarium trade.</p>","PeriodicalId":18079,"journal":{"name":"Limnology","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140324917","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":"Lead cytotoxicity associated with temperature variation in Pomacea canaliculata (Lamarck, 1822) (Mollusca, Gastropoda) hemocytes","authors":"Rafaela Porto Oliveira, Robert Tew Boyle, Marta Marques Souza","doi":"10.1007/s10201-024-00743-y","DOIUrl":"https://doi.org/10.1007/s10201-024-00743-y","url":null,"abstract":"<p>The excess of contaminating metals in the aquatic environment and their easy absorption by mollusks and other organisms prompts interest in evaluating metal toxicity associated with environmental variables. This study aimed to determine if temperature variations influence lead (Pb) toxicity in the hemocytes of the gastropod <i>Pomacea canaliculata</i>. We performed in vitro assays, including lysosomal integrity, mitochondrial activity, cell morphology, cell volume, and diagnosis of cell death pathways (apoptosis and necrosis). Hemocytes exposed to a concentration of 0.01 mgL⁻¹ of Pb at 11 °C showed increased mitochondrial activity. In addition, at temperatures of 11 °C and 15 °C, we also observed increased mitochondrial activity at the concentration of 1.0 mgL⁻¹ of Pb. Furthermore, we observed an increase in the frequency of spherical cells at the concentration of 0.1 mgL⁻¹ of Pb at a temperature of 11 °C. The actions of lead and temperature did not affect the other parameters analyzed. Although most parameters indicate resistance, cytotoxic effects can be detected in the hemocytes of <i>P. canaliculata</i>.</p>","PeriodicalId":18079,"journal":{"name":"Limnology","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140324973","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 niche partitioning of Mekong giant catfish Pangasianodon gigas in a tropical reservoir: evidence from stable isotope and fatty acid analyses","authors":"Ayano Medo, Nobuhito Ohte, Keisuke Koba, Nobuaki Arai, Yasushi Mitsunaga, Hideaki Nishizawa, Manabu Kume, Thavee Viputhanumas, Kiattipong Kamdee, Chakrit Saengkorakot, Koki Ikeya, Iroha Yamada, Tatsuya Sugawara, Yuki Manabe, Akiko S. Goto, Ayako Yokoyama, Hiroyuki Yamane, Hiroki Kajitani, Daichi Kojima, Takashi Nose, Hiromichi Mitamura","doi":"10.1007/s10201-024-00741-0","DOIUrl":"https://doi.org/10.1007/s10201-024-00741-0","url":null,"abstract":"<p>Large-bodied animals, such as the Mekong giant catfish (<i>Pangasianodon gigas</i>), may modify prey communities and affect their potential competitors for food resources by consuming large quantities of prey. The Mekong giant catfish is a key representative of freshwater megafauna and is stocked in reservoirs in Thailand for species conservation and fishery stock enhancement. However, their biological interactions with other sympatric animals remain unclear. Here, we aimed to investigate the trophic niche of the Mekong giant catfish in a Thai reservoir by comparing stable carbon and nitrogen isotope ratios (<i>δ</i>¹³C and <i>δ</i>¹⁵N, respectively) and fatty acid (FA) composition with those of five other sympatric fish species. The <i>δ</i>¹³C value of the Mekong giant catfish was –24.4 ± 1.0‰ (mean ± SD), the second highest among the sympatric fish species, suggesting relatively weak reliance on phytoplankton-based food chains. The <i>δ</i>¹⁵N value of the Mekong giant catfish was 10.7 ± 0.4‰, intermediate between those of herbivorous and carnivorous fishes, indicating that it is not a primary consumer. The FA composition of the Mekong giant catfish significantly differed from those of the other fish species and was characterized by a large proportion of long-chain FA, including 22:6n-3, 20:5n-3, and 20:1n-9. The <i>δ</i>¹³C, <i>δ</i>¹⁵N, and FA signatures suggest that the Mekong giant catfish occupy distinct trophic niches in food webs. Our results highlight that it is necessary to monitor the ecological impacts of released Mekong giant catfish on lower-level consumers through their foraging in receiving reservoirs.</p>","PeriodicalId":18079,"journal":{"name":"Limnology","volume":null,"pages":null},"PeriodicalIF":1.6,"publicationDate":"2024-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139949730","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}