Lakes and Reservoirs: Research and Management最新文献

{"title":"Rethinking inclusivity and justice agendas in restoration of urban ecological commons: A case study of Bangalore lakes","authors":"Amrita Sen,&nbsp;Harini Nagendra","doi":"10.1111/lre.12408","DOIUrl":"10.1111/lre.12408","url":null,"abstract":"<p>The present study analyses civic and community-based initiatives in conserving urban ecological commons in India, which have been increasingly polluted, encroached upon and degraded because of rapid land-use transformations. Bangalore, a city in south India, has one of the largest networks of manmade lakes, some of which are restored and managed by citizen groups, civil society, environmental activists and voluntary private bodies. The restoration process interfaces with urban policy making, shaping predominant management agendas in association with the State. Community initiatives in conserving the lakes are not only well-organized, but also play a crucial role in making city commons vibrant and integral nodes of cultural and social identification. However, the contemporary management system involving citizen groups in lake conservation is largely at odds with the tradition of community-managed lake systems previously existing in the city, which have eroded as the city became industrialized and increased in size and population, resulting in rapid landscape transformations. Against this background, the present study aims to illustrate that a seemingly representative community management of city ecologies is often embedded in an overwhelming political context. It also discusses the need for an urgent deconstruction to better understand how overtly flexible and dynamic restoration actions interact with inequality, power and conflicts. The results of the present study emphasize that the current participatory and community-driven initiatives of ecological restoration in Indian cities unfortunately accord limited significance to the overarching questions of social justice and relations of power.</p>","PeriodicalId":39473,"journal":{"name":"Lakes and Reservoirs: Research and Management","volume":"27 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117264864","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Length-weight relationships of 12 dominant fish species from a Ramsar Wetland in India: Vembanad Lake","authors":"Kuttanelloor Roshni,&nbsp;Chelapurath Radhakrishnan Renjithkumar","doi":"10.1111/lre.12414","DOIUrl":"10.1111/lre.12414","url":null,"abstract":"<p>The present study describes the length-weight relationships (LWRs) of 12 dominant finfish species from Vembanad Lake, India, from June 2015 to May 2016. Samples were carried out using a wide range of fishing gears such as gill nets (mesh sizes 20–60 mm), seine nets (mesh sizes 8–16 mm), cast nets (mesh sizes 6–8 mm) and hook and lines. The values of the exponent <i>b</i> ranged from 2.506 (<i>Glossogobius giuris</i>) to 3.305 (<i>Heteropneustes fossilis</i>) and regression parameters <i>R</i>² from .960 (<i>Carinotetraodon travancoricus</i>) to .995 (<i>G. giuris</i>). The study reports the new maximum total length (TL_max) for <i>Hyporhamphus xanthopterus</i> and first reference regarding length-weight relationships for <i>Mystus oculatus, Ompok malabaricus</i> and <i>C. travancoricus.</i> The results provide useful information for preparing sustainable resource management plans and conservation strategies for these species in the lake and similar ecosystems.</p>","PeriodicalId":39473,"journal":{"name":"Lakes and Reservoirs: Research and Management","volume":"27 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121107131","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Impacts of Nile tilapia cage culture on water and bottom sediment quality: The ability of an eutrophic lake to absorb and dilute perturbations","authors":"Safina Musa,&nbsp;Christopher Mulanda Aura,&nbsp;Tumi Tomasson,&nbsp;Ólafur Sigurgeirsson,&nbsp;Helgi Thorarensen","doi":"10.1111/lre.12413","DOIUrl":"10.1111/lre.12413","url":null,"abstract":"<p>Environmentally sustainable aquaculture depends on accurate understanding of the impacts of aquaculture-derived organic matter (AOM) and the ability of aquaculture systems to absorb and dilute perturbations. To this end, the present study assessed the impacts of AOM from cage culture of Nile tilapia on the ecology of Lake Victoria, Kenya, using fish cages near Anyanga Beach in Siaya County from December 2018 to October 2019. Four locations were surveyed for organic loadings from cage cultures, located 0, 50, 150 and 500 m (as a control site) away from the cages. The cage aquaculture produced increased P and N concentrations near the cages and a decreased N:P molar ratio. These changes stimulated algal growth which, in turn, affected the water quality. The organic material accumulated on the bottom under the cages, increasing the benthic BOD (BOD, &gt;10 mg/g), a sensitive indicator of the ecological footprint of the cage aquaculture. Further, the negative ORP observed in the benthic layer suggested anoxic bacterial metabolism, possibly causing build-up of sulphides and methane. These changes altered the abundance and composition of both limnetic and benthic communities. At the beginning of the study, 22 zoobenthic taxa existed around the cages and 18 at the reference sites. Only 3 saprophilous taxa, chiefly gastropods (<i>Physella</i> spp.), bivalves (<i>Sphaerium</i> spp<i>.</i>) and oligochaetes (<i>Tubifex</i> spp.) were present at the cage site and 17 at the reference site at the end of the culture period. The Shannon diversity index exhibited a declining tendency with the length of culture period at the cage site, signifying a negative impact of aquaculture on biodiversity. The water quality recovery after cage disturbance is rapid (&lt;4 months), noting there was no significant difference in the water quality recorded at the cage site and the other sampling sites after a fallow period of 4 months. However, the recovery of the sediment and meiofauna was far from complete at the end of this period. Moving the cages slightly (50–100 m) away from the former location may allow the benthic communities to recover and alleviate the problem. Further, the fallowing period, particularly for the Anyanga Beach site, should be extended from four to at least 5 months to allow for the environment to recover. With the rapid increase of cage fish farming in the African Great Lakes Region and with the potential for its occurrence in other lakes, there is a need to develop regulations to guide the industry, as well as the need for continuous monitoring of the environment, in order to provide information to guide investments and ensure sustainable cage farming.</p>","PeriodicalId":39473,"journal":{"name":"Lakes and Reservoirs: Research and Management","volume":"27 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115060890","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Length–weight relationship, condition factor, sex ratio and size at first maturity of the blue-spotted tilapia (Oreochromis leucostictus) in Lake Naivasha, Kenya","authors":"Laurent Cishahayo,&nbsp;Edwine Yongo,&nbsp;Eunice Mutethya,&nbsp;Edna Waithaka,&nbsp;Rose Ndayishimiye","doi":"10.1111/lre.12417","DOIUrl":"10.1111/lre.12417","url":null,"abstract":"<p><i>Oreochromis leucostictus</i> is a commercially important tilapiine in Lake Naivasha, with its stocks having declined because of the effects of fishing, habitat degradation and pollution. The present study investigated its length–weight relationship, condition factor, sex ratio and maturity. Fish samples (233) were collected during 2017, with each fish measured (cm), weighed (g) and analysed for maturity in the laboratory. The mean (±SD) total length and weight were 21.3 ± 0.3 cm TL and 187.4 ± 8.3 g, respectively. The fish exhibited a negative allometric growth pattern (<i>b</i> = 2.33). The mean condition factor was 1.06, 0.99 and 1.04 for male, female and combined sexes, respectively. The condition factor was significantly higher in September (1.70 ± 0.15) and October (1.63 ± 0.15) than in other months. Males were significantly more dominant than females (male:female sex ratio = 2.19:1.0). Females (21.0 cm TL) matured at smaller lengths, compared to males (26.0 cm TL). Comparisons with earlier studies suggested the length–weight relationship, condition factor, sex ratio and size at first maturity of <i>O. leucostictus</i> in Lake Naivasha varied significantly from other tilapiines in various water bodies. The results of the present study provide insights into the biological attributes of <i>O. leucostictus</i> useful for its sustainable management.</p>","PeriodicalId":39473,"journal":{"name":"Lakes and Reservoirs: Research and Management","volume":"27 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130542727","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Size frequency, length-weight relationships, condition factor and relationships between fish size and otolith dimensions in the Pama croaker Otolithoides pama (Hamilton, 1822) from Lower Meghna River Estuary, Bangladesh","authors":"Ananya Bhuiya,&nbsp;Mohammad Abdul Momin Siddique","doi":"10.1111/lre.12418","DOIUrl":"10.1111/lre.12418","url":null,"abstract":"<p>The relationships between fish size, weight and otolith morphometry are useful for fisheries management, predator–prey studies and feeding habits. Accordingly, the main purpose of the present study was to determine the relationships between body length, body weight and otolith dimensions, and to calculate the length-weight relationship and condition factor for a Sciaenid fish Pama croaker, <i>Otolithoides pama</i> (Hamilton, 1822) from the Lower Meghna estuary, Bangladesh. Field sampling was conducted from September 2019 to March 2020. The length, breadth and weight were measured for each pair of sagittae, as well as the total length (TL), standard length (SL) and body weight (BW) for each specimen. A total of 246 fish samples were collected. The TL and BW of collected individuals ranged from 14.40 to 27.40-cm and 21 to 175-g, respectively. The calculated growth coefficient (<i>b</i> = 3.018 for males; 3.052 for females) were &gt;3, indicating the fish follow a positive allometric growth. The mean Fulton's condition (Kn) values ranged from 0.674 ± 0.06 to 0.776 ± 0.07, exhibiting similar trends for all size classes. The relationships for fish size and otolith morphometry were described by linear regression models as TL = 0.048OL – 0.308 (<i>r</i>² = 0.921); BW = 0.047OL + 6.252 (<i>r</i>² = 0.929); TL = 0.003OW – 0.414 (<i>r</i>² = 0.836); BW = 0.003OW + 0.039 (<i>r</i>² = 0.81). The otolith length and weight exhibited a strong correlation (0.929 &gt; <i>r</i>² &gt; 0.805) with total length and body weight, while the otolith breadth exhibited a weak correlation. No significant differences between left and right otolith were observed (<i>p</i> &gt; .05). Because the results of the present study indicated fish length and otolith growth have a positive relationship, this finding can be a valuable tool to evaluate fish growth by back-calculating the length of a fish from its otolith characteristics.</p>","PeriodicalId":39473,"journal":{"name":"Lakes and Reservoirs: Research and Management","volume":"27 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123606822","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Macrobenthic diversity and its bioindicator potential in urban reservoirs: A Sri Lanka case study","authors":"Gardi Arachchige Chamini Dineshika Perera,&nbsp;Withanage Upali Chandrasekara","doi":"10.1111/lre.12416","DOIUrl":"10.1111/lre.12416","url":null,"abstract":"<p>Studies addressing the macrobenthic diversity and their potential as bioindicators in water quality assessment programs are sparse for Sri Lanka. The present study investigated the macrobenthic diversity in relation to water quality parameters in some urban reservoirs in the Western Province of Sri Lanka, assessing their potential as bio-indicators in water quality assessment programs. The six study reservoirs included the Ihalagama Tank, Peralanda Tank, Kesbewa Tank, Boralesgamuwa Tank, Bolgoda Lake and Beira Lake. The microbenthic fauna abundance at randomly selected locations (<i>n</i> = 9) in each reservoir and selected water quality parameters (temperature; pH; electrical conductivity; total dissolved solids; BOD₅; dissolved nitrates; total dissolved phosphate and alkalinity of the overlying water at each location were measured between July 2020 and January 2021, using standard data collection methods). The species richness (SR), species heterogeneity (<i>H</i>′) and species evenness (<i>J</i>) of the macrobenthic fauna in each reservoir were calculated, and the abundance and water quality data analysed using ANOVA and PCA as appropriate. A total of 13 macrobenthic taxa (<i>Glyphidrilus</i> sp., <i>Limnodrilus socialis</i>, <i>Dero</i> sp., Stratiomyd larva, Chironomid larva, <i>Bellamya</i> sp., <i>Melanoides tuberculata</i>, <i>Gyraulus</i> sp., <i>Lymnaea</i> sp., <i>Paludomus</i> sp., <i>Thiara</i> sp., <i>Ancylus</i> sp. and <i>Mesostoma</i> sp.) were observed from the six study reservoirs. The oligochaete tubificid worm <i>L. socialis</i> dominated the sediment samples, accounting for more than 94.7% of the total macrobenthic abundance, with the highest relative abundance of this species observed in Beira Lake (99.3%). The species richness of the macrobenthic community was highest in the Ihalagama and Kesbewa tanks (SR = 5), while it was the lowest in the Peralanda Tank (SR = 2). Since the benthic community was mainly dominated by <i>L. socialis</i>, the lowest species heterogeneity and species evenness values were observed in Beira Lake (<i>H</i>′ = 0.05; <i>J</i> = 0.03). The values of the water quality parameters among the study reservoirs varied, with Beira Lake exhibiting significantly high BOD₅, dissolved nitrate, and total dissolved phosphate values (<i>p</i> &lt; .05) than the other reservoirs, indicating a higher degree of eutrophication. Furthermore, the SR, <i>J</i> and <i>H</i>′ values for the study reservoirs decreased with increasing BOD₅, dissolved nitrate and total dissolved phosphate levels. Thus, it was concluded that the abundance and diversity of macrobenthic fauna are primarily governed by water quality parameters. Furthermore, <i>L. socialis</i> can be used as a potential bioindicator organism in water quality assessment programs in urban reservoirs.</p>","PeriodicalId":39473,"journal":{"name":"Lakes and Reservoirs: Research and Management","volume":"27 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125010210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Spawning migration of Labeobarbus species of Lake Tana across the Gilgel Abay River Weir, Ethiopia: The challenges to fish spawning migration and proposed management solutions","authors":"Dagnew Mequanent,&nbsp;Minwyelet Mingist,&nbsp;Abebe Getahun,&nbsp;Wassie Anteneh","doi":"10.1111/lre.12415","DOIUrl":"10.1111/lre.12415","url":null,"abstract":"<p>Lake Tana is one of the largest freshwater bodies in East Africa, with its 18 <i>Labeobarbus</i> species being the world's last remaining Cyprinid species flock. Many of them feed and grow in Lake Tana and migrate to the tributaries of the lake to reproduce. The construction of irrigation structures is increasing in the tributary rivers, however, without due attention being given to the spawning migration routes and critical spawning habitats. The present study examined the impacts of the Gilgel Abay Weir on the spawning migration of these species and discusses possible interactions with other human-related impacts and potential mitigation measures. Fish samples were taken twice monthly from July to November 2019, both below and above the weir with gillnets. No spawning migration to the upstream of the weir has occurred since its construction, with the weir being a barrier to their spawning migration route of Lake Tana fisheries. Of the 11 species caught, only <i>Labeobarbus intermedius</i> (a habitat generalist) was observed above the weir, with the species diversity being significantly higher below the weir (<i>p</i> &lt; 0.05) than above it. The total number of species observed during the present study was also lower, compared with previous reports. The fisheries impacts may also have been exacerbated by other contributing factors such as habitat destruction, river system degradation, destructive fishing practices and weed infestation, a situation which may lead to the collapse of Lake Tana fisheries and ultimately the lake's ecology. Reversing this situation is crucial, noting the implementation of such measures as habitat restoration and improvement, replacing the weir with environmentally friendly technologies, prohibition of illegal fishing, and construction of fish ladders could definitely alleviate the observed negative impacts of the Gilgel Abay Weir on the fisheries.</p>","PeriodicalId":39473,"journal":{"name":"Lakes and Reservoirs: Research and Management","volume":"27 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129999190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Performance evaluation of a brewery wastewater treatment plant in Ethiopia: Implications for wetland ecosystem management","authors":"Chala Daba,&nbsp;Amanuel Atamo,&nbsp;Mengesha Dagne,&nbsp;Adinew Gizeyatu,&nbsp;Metadel Adane,&nbsp;Asha Embrandiri,&nbsp;Mesfin Gebrehiwot","doi":"10.1111/lre.12412","DOIUrl":"10.1111/lre.12412","url":null,"abstract":"<p>Brewery industries are a major surface water pollution source since they release their waste waters into receiving aquatic systems. The Brasserieset Group Industry (BGI) located at the town of Kombolcha (Ethiopia) discharges large quantities of organically laden waste water into the Borkena River, a tributary to the Cheffa Wetland, one of Ethiopia's largest wetlands. As the efficiency of the brewery's wastewater treatment plant has not been assessed, there is no existing evidence regarding the compliance of its effluent discharges with standard discharge limits. The aim of the present study, therefore, was to evaluate the efficiency of the brewery wastewater treatment plant, as well as to assess the status of the effluent discharge compliance for the stated guidelines. Time-composite wastewater samples were collected from the treatment plant inlet and final outlet during February to March 2020. Pollutant removal efficiency was evaluated by determining the differences in the pollutant concentrations in the influent and effluent. The mean value of the treated brewery wastewater Biochemical Oxygen Demand was 23.3 ± 12.3 mg/L, Chemical Oxygen Demand was 111.9 ± 33.8 mg/L, total nitrogen (TN) was 92.4 ± 21 mg/L, total phosphorus (TP) was 12.8 ± 5.1 mg/L and nitrate nitrogen (NO₃-N) was 22.5 ± 5.2 mg/L. Although the brewery treatment plant removed large percentages of organic constituents such as BOD₅ (98.6%) and COD (96.7%), only small quantities of TP (49.8%), TN (19.9%) and NO₃-N (9.3%) were removed. As the treatment plant discharges did not meet the Ethiopian permissible limit standards for the critical parameters, deterioration of the downstream wetland and its resources is of serious concern. To better manage and conserve the Cheffa Wetland and its important ecosystem services, it is recommended that the industry improves its wastewater treatment efficiency.</p>","PeriodicalId":39473,"journal":{"name":"Lakes and Reservoirs: Research and Management","volume":"27 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117079616","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Mind the gaps for the best practices: Enhancing the management of Lake Victoria fisheries resources","authors":"Christopher Mulanda Aura,&nbsp;Amber Roegner,&nbsp;Horace Owiti,&nbsp;Dorothy Birungi,&nbsp;Kathryn J. Fiorella,&nbsp;Jessica Corman,&nbsp;Robert Kayanda,&nbsp;Patrick Mbullo,&nbsp;Chrisphine S. Nyamweya,&nbsp;Geofrey Mchau,&nbsp;Miles Daniels,&nbsp;Richard Oginga Abila","doi":"10.1111/lre.12411","DOIUrl":"10.1111/lre.12411","url":null,"abstract":"<p>Fisheries resources face a confluence of socio-ecological challenges, the resolution of which requires interdisciplinary scientific information for sustainable utilization and management. The present study assessed gaps and challenges in Lake Victoria fisheries resources management for better research focus, policy formulation and improved governance of the fishery towards sustainability. Using key informant interviews and a plenary discussion with trans-disciplinary experts regarding Lake Victoria fisheries research, management and policy sectors, the present study identified current management challenges, gaps and priorities. The present study results indicate a constantly increasing fishing effort, poor enforcement of existing regulations and pollution and invasive weeds pose the greatest threats to the sustainability of Lake Victoria's fisheries resources. Policy gaps include a lack of regulations on emerging technologies (e.g. cage culture) and an absence of implementation guidelines and framework for some existing policies. The aspects and gaps of each challenge are discussed, using available literature for the lake, with policy and capacity interventions recommended under each section for sustainable management of Lake Victoria fisheries resources.</p>","PeriodicalId":39473,"journal":{"name":"Lakes and Reservoirs: Research and Management","volume":"27 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127544178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Length–weight relationships of seven small indigenous fish species from the Tapti River in peninsular India","authors":"Dibakar Bhakta,&nbsp;Wakambam Anand Meetei,&nbsp;Suhas Prakash Kamble,&nbsp;Thangjam Nirupada Chanu,&nbsp;Vettath Raghavan Suresh,&nbsp;Basanta Kumar Das","doi":"10.1111/lre.12410","DOIUrl":"10.1111/lre.12410","url":null,"abstract":"<p>Length–weight relationships of seven small indigenous fishes collected from the middle and lower stretch of the Tapti River in India were determined. The specimens were caught with drag nets (0 mm mesh size), gill nets (10–20 mm knot-to-knot mesh length) and scoop nets (0 mm) from the Maharashtra, and Gujarat state stretches of the Tapti River from November 2018 to December 2019. Digital calliper and digital balances were used to measure the total length (TL) and body weight (BW) of all fish specimens respectively. The growth coefficient <i>b</i> varied from 2.758 (<i>Parambassis ranga</i>) to 3.298 (<i>Osteobrama cotio</i>), and the LWRs were highly significant (<i>p</i> &lt; .005). The present study established LWRs for the first time for seven fish species in the respective riverine habitat, including providing a new maximum length record for <i>Corica soborna</i>. The results of the present study will be useful for sustainable management and conservation of respective species in the river and its associated waterbodies.</p>","PeriodicalId":39473,"journal":{"name":"Lakes and Reservoirs: Research and Management","volume":"27 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115967380","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}