Ecology of Freshwater Fish最新文献

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Contrasting Patterns of Larval Recruitment in River–Lake Systems in Migratory and Nonmigratory Galaxias Species 洄游和非洄游星系在江河-湖泊系统中幼虫招募模式的对比
IF 1.6 3区 农林科学
Ecology of Freshwater Fish Pub Date : 2024-12-11 DOI: 10.1111/eff.12829
Mahsa Toorchi, Malcolm R. Reid, Gerard P. Closs
{"title":"Contrasting Patterns of Larval Recruitment in River–Lake Systems in Migratory and Nonmigratory Galaxias Species","authors":"Mahsa Toorchi,&nbsp;Malcolm R. Reid,&nbsp;Gerard P. Closs","doi":"10.1111/eff.12829","DOIUrl":"https://doi.org/10.1111/eff.12829","url":null,"abstract":"<div>\u0000 \u0000 <p>Many aspects of the ecology, life history and distribution of fishes differ between their larval and adult life-history stages. Identifying the critical habitats and migration pathways required by each life cycle stage is crucial for effective conservation and ecological management. Using microchemical analysis of otoliths, we examined the influence of larval habitat and migration on the composition and population structure of migratory and nonmigratory <i>Galaxias</i> species collected from tributaries upstream of inland lakes and streams lacking downstream lake connections in the Waitaki River basin, New Zealand. Larval (core) and adult (edge) layers of each individual otolith were analysed to compare otolith trace signatures formed during larval and adult life-history stages. The results revealed considerable variation between larval and adult otolith chemical signatures of migratory (<i>Galaxias brevipinnis</i>) species. Classification analysis indicated that populations of <i>G. brevipinnis</i> upstream of each lake shared a common larval habitat, most likely the lake, with 100% of individuals from each lake-riverine system having larval signatures that were distinct from adult signatures. In contrast, relatively consistent patterns of elemental concentrations were detected across the otoliths of nonmigratory species suggesting both their larval and adult life-history stages had occurred in the same stream from which the adults were collected. These findings provide a framework for understanding how larval-rearing environments can influence the distribution of stream fish across the landscape. Furthermore, identifying the source of recruits can help to improve conservation efforts to protect naturally land-locked populations of <i>G. brevipinnis</i>.</p>\u0000 </div>","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"34 2","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143113988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Behaviour of the Apex Predator European Catfish (Silurus glanis) on a Recently Invaded Reservoir 欧洲鲶鱼(Silurus glanis)在新近入侵的水库上的行为
IF 1.6 3区 农林科学
Ecology of Freshwater Fish Pub Date : 2024-11-27 DOI: 10.1111/eff.12817
G. S. Santos, F. Ribeiro, E. Pereira, A. F. Silva, P. R. Almeida, D. Ribeiro, B. R. Quintella
{"title":"Behaviour of the Apex Predator European Catfish (Silurus glanis) on a Recently Invaded Reservoir","authors":"G. S. Santos,&nbsp;F. Ribeiro,&nbsp;E. Pereira,&nbsp;A. F. Silva,&nbsp;P. R. Almeida,&nbsp;D. Ribeiro,&nbsp;B. R. Quintella","doi":"10.1111/eff.12817","DOIUrl":"https://doi.org/10.1111/eff.12817","url":null,"abstract":"<p>The European catfish (<i>Silurus glanis</i> L.) is a large, non-native, invasive freshwater species known for its high fecundity, long lifespan and significant predatory potential, possibly threatening native fish communities. While some studies exist on its spatial use, most focus on its native range and lack detailed circadian and annual activity patterns. This study uses acoustic biotelemetry to track 10 adult fish in the Tagus River's Belver reservoir, employing transmitters with 3D accelerometer and pressure sensors to record activity and depth over a year. Generalised additive models identify environmental variables influencing activity and depth patterns. The European catfish is active year-round, with peak activity in summer and minimal in autumn. It occupies shallower depths in spring and summer (median depths of 2.6 and 4.8 m, respectively) and deeper waters in autumn and winter (median depths of 9.8 and 10.8 m, respectively). Circadian vertical movement patterns exhibit high seasonal and individual variability. Significant environmental predictors of the European catfish activity include river flow, water temperature and the photoperiod, while the predictors of depth use are river flow and the photoperiod. These insights can aid in developing effective control measures, such as optimising fishing efforts spatially and temporally to enhance the efficiency of removing this invasive fish.</p>","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"34 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/eff.12817","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143119928","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Distribution and Diversity of Coastal Fish in Fresh and Oligohaline Waters: An Example of the Largest Baltic Sea Estuary of the Neva River 淡水和低盐水域中沿海鱼类的分布和多样性:以涅瓦河最大的波罗的海河口为例
IF 1.6 3区 农林科学
Ecology of Freshwater Fish Pub Date : 2024-11-27 DOI: 10.1111/eff.12827
Anton A. Uspenskiy
{"title":"Distribution and Diversity of Coastal Fish in Fresh and Oligohaline Waters: An Example of the Largest Baltic Sea Estuary of the Neva River","authors":"Anton A. Uspenskiy","doi":"10.1111/eff.12827","DOIUrl":"https://doi.org/10.1111/eff.12827","url":null,"abstract":"<p>Understanding how low salinity gradients (0‰–5‰) influence fish life cycles is critical for clarifying principles of fish assemblage formation in estuarine ecosystems. This study is intended to provide a foundation for predicting changes in fish populations amidst ongoing surface salinity decreases in the Baltic Sea. In the Neva River Estuary, differences in fish diversity and distribution between fish assemblages in freshwater and oligohaline areas were assessed using beach seine and multi-mesh gillnet surveys. The use of multiple sampling gears greatly enhanced understanding of fish distribution across salinity gradients. Fish assemblages were analysed depending on the different areas of the estuary, seasons of sampling, salinity and confounding environmental variables such as water temperature and depth. Salinity was the major influencing factor for the surf zone fish assemblages and a season of sampling was the main factor for coastal assemblages of larger fish studied with the gillnets. Fish assemblages in the surf zone exhibited significant but gradual changes in freshwater and marine-estuarine fish occurrence and abundance along the critical oligohaline barrier ‘δ-horohalinicum’ (0.5‰–1.9‰). Although freshwater species showed high occurrence and abundance throughout the estuary, their juveniles were less abundant in the oligohaline surf zone with salinity ≥ 2‰, where small-size marine-estuarine and euryhaline species predominated. Coastal multi-mesh gillnet catches showed remarkable similarity between assemblages of larger fish in freshwater and oligohaline areas. Differences in species richness and diversity indices were not pronounced throughout the salinity gradient; the decline in freshwater species was offset by an increase in marine-estuarine and euryhaline species.</p>","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"34 2","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/eff.12827","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143120232","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Role of Underwater Soundscapes in Shaping the Distribution of Cobitidae Fish: Insights From Multiple Environmental Factors 水下声景观在塑造刀鱼科鱼类分布中的作用:来自多种环境因素的见解
IF 1.6 3区 农林科学
Ecology of Freshwater Fish Pub Date : 2024-11-27 DOI: 10.1111/eff.12828
Ji Yang, Jiawei Xu, Xiaotao Shi, Yujiao Wu, Senfan Ke, Dongqing Li, Shenghui Gao, Xinyu Li, Jiaxin Li, Zewen Jiang, Bixin Cheng
{"title":"The Role of Underwater Soundscapes in Shaping the Distribution of Cobitidae Fish: Insights From Multiple Environmental Factors","authors":"Ji Yang,&nbsp;Jiawei Xu,&nbsp;Xiaotao Shi,&nbsp;Yujiao Wu,&nbsp;Senfan Ke,&nbsp;Dongqing Li,&nbsp;Shenghui Gao,&nbsp;Xinyu Li,&nbsp;Jiaxin Li,&nbsp;Zewen Jiang,&nbsp;Bixin Cheng","doi":"10.1111/eff.12828","DOIUrl":"https://doi.org/10.1111/eff.12828","url":null,"abstract":"<div>\u0000 \u0000 <p>Sound is critical in fish behaviours, including reproduction, feeding, predator avoidance and habitat selection. To investigate the impact of underwater soundscape on the distribution of Cobitidae fishes, we surveyed the status of Cobitidae fish resources and the underwater soundscape along with related environmental factors at 12 sampling sites downstream of the Songxin Hydropower Station in the Heishui River, a major tributary of the Jinsha River in China. Generalised additive models (GAMs) were employed to identify the primary environmental factors influencing the distribution of Cobitidae fishes and we analysed the correlation between the abundance of Cobitidae fish and primary environmental factors. The study revealed that the water depth, flow velocity, water temperature and sound pressure level (SPL) all had highly significant effects on the distribution of Cobitidae fishes (<i>p</i> &lt; 0.001), with SPL showing the lowest relative importance among these factors. Water depth positively correlated with Cobitidae fish abundance, whereas water temperature, SPL and flow velocity showed negative correlations. This study preliminarily explored the response relationship between the distribution of Cobitidae fish and four main environmental factors, offering a technical foundation for predicting the distribution of Cobitidae fishes in rivers and for implementing conservation measures of fish such as suitable habitat creation.</p>\u0000 </div>","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"34 2","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143120233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Interactive Effects of Anthropogenic Stressors on the Temporal Changes in the Size Spectrum of Lake Fish Communities 人为压力源对湖泊鱼类群落大小谱变化的交互影响
IF 1.6 3区 农林科学
Ecology of Freshwater Fish Pub Date : 2024-11-11 DOI: 10.1111/eff.12826
Valentin Marin, Julien Cucherousset, Gaël Grenouillet
{"title":"Interactive Effects of Anthropogenic Stressors on the Temporal Changes in the Size Spectrum of Lake Fish Communities","authors":"Valentin Marin,&nbsp;Julien Cucherousset,&nbsp;Gaël Grenouillet","doi":"10.1111/eff.12826","DOIUrl":"https://doi.org/10.1111/eff.12826","url":null,"abstract":"<p>The size spectrum represents a powerful approach for quantifying the effects of environmental changes from individuals to communities in aquatic ecosystems. However, our understanding of its temporal stability in freshwater ecosystems is still limited. In the present study, we used a size spectrum approach to investigate the responses of 126 lake fish communities to changes in the intensity of three common anthropogenic stressors (i.e., global warming, nutrient loading and biological invasions) in French natural lakes and reservoirs over an average 5-year time period. Using a backward selection on a full model including all possible effects of stressors on the size spectrum slope, we demonstrated that (i) increasing summer temperature shifted fish abundance towards the largest size classes, resulting in a flatter size spectrum slope and (ii) nutrient loading and biological invasions were associated with a shift towards smaller size classes in natural lakes, while the opposite effect was observed in reservoirs. In addition, these two stressors interacted in determining changes in the size structure of fish communities, complicating what the size spectrum can reveal about changes in stressor intensity during monitoring programs. All predictors accounted for a limited part of the observed changes in size spectra, and further investigations are needed to fully apprehend the interplay between natural and human-induced drivers of the temporal changes in size spectra in contrasting environmental conditions.</p>","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"34 2","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/eff.12826","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143114156","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Editorial 2025 编辑2025
IF 1.6 3区 农林科学
Ecology of Freshwater Fish Pub Date : 2024-11-11 DOI: 10.1111/eff.12825
David C. Heins, Keith Gido, Nuria Sanz Ball-Ilosera, Asbjørn Vøllestad
{"title":"Editorial 2025","authors":"David C. Heins,&nbsp;Keith Gido,&nbsp;Nuria Sanz Ball-Ilosera,&nbsp;Asbjørn Vøllestad","doi":"10.1111/eff.12825","DOIUrl":"https://doi.org/10.1111/eff.12825","url":null,"abstract":"&lt;p&gt;While reviewing the progress of the journal, we decided to require authors to state the significance of their findings for readers of EFF. Beyond having authors focus on the justification for submitting their research to EFF, this new requirement should aid editors and reviewers in evaluating submitted manuscripts. Manuscripts submitted without the statement will be returned to the authors for completion prior to editorial and peer review. The requirement is described below and in the Author Guidelines.&lt;/p&gt;&lt;p&gt;&lt;i&gt;EFF&lt;/i&gt; publishes papers devoted to basic ecology of freshwater fishes, and &lt;i&gt;EFF&lt;/i&gt; is strongly committed to conservation. We seek to publish important research revealing, testing, or supporting knowledge of phenomena without consideration given to applications of that knowledge. As a journal publishing pure, fundamental science, &lt;i&gt;EFF&lt;/i&gt; is not a fisheries or management journal. Nonetheless, authors may wish to include a brief, concise statement about the implications of their research for ecological or environmental management aimed at conservation of fishes or their habitats without regard to human use, which can be done in concluding the discussion.&lt;/p&gt;&lt;p&gt;Where feasible authors are strongly encouraged to focus the title, abstract, and introduction of their reports on the phenomena studied by deemphasizing or excluding locality or taxon involved and detailing them in the methods. We understand, however, that there may be cases where including the region or taxon is appropriate.&lt;/p&gt;&lt;p&gt;&lt;i&gt;EFF&lt;/i&gt; offers authors the option of free format submission for a simplified and streamlined submission process. Free format submission eases the process of preparing a manuscript and allows the author to complete the process faster. Authors may submit their manuscripts in the format of their choosing. &lt;i&gt;EFF&lt;/i&gt;'s publisher, Wiley, updates the formatting into the journal's style when a manuscript is accepted for publication.&lt;/p&gt;&lt;p&gt;Table 2 shows the papers cited most often in the two-year period (2021–2022) covered by Clarivate's Journal Citation Report for June 2023. We thank the authors for their contributions to the journal and congratulate them on their achievements.&lt;/p&gt;&lt;p&gt;&lt;i&gt;EFF&lt;/i&gt; publishes special issues or contributions (special sections) drawn from proceedings of conferences and symposia. In the October 2024 issue (33:4), &lt;i&gt;EFF&lt;/i&gt; published proceedings from the international symposium &lt;i&gt;Advances in the Population Ecology of Stream-Dwelling Salmonids VI&lt;/i&gt;. We continue to seek special issues and contributions addressing basic fish ecology, as proceedings drawn from conferences or symposia, as well as independent, stand-alone publications. If you would like to propose an idea for a Special Issue in &lt;i&gt;EFF&lt;/i&gt;, please contact the Editorial Office at &lt;span&gt;[email protected]&lt;/span&gt;.&lt;/p&gt;&lt;p&gt;The contributions of a journal to science are dependent upon the efforts of many. The Editorial Board members who help to maintain the integrity and r","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"34 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/eff.12825","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143114158","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
In Situ Videography Quantifies Temporal and Spatial Variation in Prey Consumption and Energy Intake by Stream-Dwelling Bull Trout (Salvelinus confluentus) 原位录像技术量化生活在溪流中的鳟鱼(Salvelinus confluentus)猎物消耗和能量摄入的时空变化
IF 1.6 3区 农林科学
Ecology of Freshwater Fish Pub Date : 2024-11-06 DOI: 10.1111/eff.12824
Zane C. Stephenson, Ernest R. Keeley
{"title":"In Situ Videography Quantifies Temporal and Spatial Variation in Prey Consumption and Energy Intake by Stream-Dwelling Bull Trout (Salvelinus confluentus)","authors":"Zane C. Stephenson,&nbsp;Ernest R. Keeley","doi":"10.1111/eff.12824","DOIUrl":"https://doi.org/10.1111/eff.12824","url":null,"abstract":"<div>\u0000 \u0000 <p>In stream ecosystems, invertebrates are a principal source of prey for many fishes, but their abundance as a food source depends on the predator's ability to exploit them in time and space. Although salmonid fishes are commonly thought of as daytime drift-feeding predators of invertebrates in streams, they exhibit great flexibility in foraging behaviour and may also consume prey from the benthos and at night. Char species, (<i>Salvelinus</i> sp.), in particular, may be better adapted to forage under low light conditions due to greater scotopic sensitivity than other salmonids. In this study, we used in situ or in place videography to quantify the foraging behaviour of bull trout (<i>Salvelinus confluentus</i>) and determine when and where they capture prey. We found that bull trout were primarily daytime predators of invertebrates drifting in the water column, and that they rarely captured prey from the benthos or foraged at night. We did observe size-related differences and seasonal declines in foraging rate from summer to fall months. A modelled estimate of energy intake indicates that daytime drift-feeding by small size classes of bull trout was above that needed for a maximum daily ration under a range of assumptions about prey size and prey retention rates. Energy intake rates for larger fish were more dependent on assumptions of preferred prey size and prey retention rates. Our data indicate that daytime measures of invertebrate drift abundance and size are the most inclusive measure of food abundance for stream-dwelling bull trout.</p>\u0000 </div>","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"34 2","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143112526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Correction to ‘The influence of flow on movement of a headwater specialist in an intermittent urban headwater stream’ 对 "水流对城市间歇性源头溪流中源头专家运动的影响 "的更正
IF 1.6 3区 农林科学
Ecology of Freshwater Fish Pub Date : 2024-10-29 DOI: 10.1111/eff.12812
{"title":"Correction to ‘The influence of flow on movement of a headwater specialist in an intermittent urban headwater stream’","authors":"","doi":"10.1111/eff.12812","DOIUrl":"https://doi.org/10.1111/eff.12812","url":null,"abstract":"<p>Curtis, K., Sanders, A., Urbanic, M., Israel, G., McCombs, C., Pastura, L., Matter, S. F., &amp; Booth, M. T. (2024). The influence of flow on movement of a headwater specialist in an intermittent urban headwater stream. <i>Ecology of Freshwater Fish</i>, 33, e12744. https://doi.org/10.1111/eff.12744</p><p>In the originally published article, co-author Connor McCombs was inadvertently left off the author list. The correct author list is as follows:</p><p>Katherine Curtis, Adam Sanders, Megan Urbanic, Gabriyelle Israel, Connor McCombs, Logan Pastura, Stephen F. Matter and Michael T. Booth</p><p>Department of Biological Sciences, University of Cincinnati, Cincinnati, Ohio, USA</p><p>This has been corrected in the online version of the article.</p><p>We apologise for this error.</p>","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"33 4","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/eff.12812","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142555345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Small Streams Support Beta Diversity in Neotropical Fish Assemblages in the Upper Paraná River Basin 在帕拉纳河上游流域,小溪支持新热带鱼群落的β多样性
IF 1.6 3区 农林科学
Ecology of Freshwater Fish Pub Date : 2024-10-27 DOI: 10.1111/eff.12819
Renner Fernando da Silva Córdova Junior, Fabiane Silva Ferreira, Henrique Lopes Ledo Pinho, Alessandro Minillo, Elaine Antoniassi Luiz Kashiwaqui, Yzel Rondon Súarez
{"title":"Small Streams Support Beta Diversity in Neotropical Fish Assemblages in the Upper Paraná River Basin","authors":"Renner Fernando da Silva Córdova Junior,&nbsp;Fabiane Silva Ferreira,&nbsp;Henrique Lopes Ledo Pinho,&nbsp;Alessandro Minillo,&nbsp;Elaine Antoniassi Luiz Kashiwaqui,&nbsp;Yzel Rondon Súarez","doi":"10.1111/eff.12819","DOIUrl":"https://doi.org/10.1111/eff.12819","url":null,"abstract":"<div>\u0000 \u0000 <p>Variation in species composition along an environmental gradient (β-diversity) can inform our understanding of biodiversity patterns and species composition. Beta diversity can be partitioned into species contributions to beta diversity (SCBD) and local contributions to beta diversity (LCBD). While SCBD describes the variations in species composition among samples, LCBD measures the uniqueness of a biological community within a larger ecosystem. Recently developed metrics enabled the estimation of species contribution to total beta diversity (SCBD) and the contribution of individual sites to total beta diversity (LCBD). Utilising these metrics, a one-time survey of 275 sampling points within four sub-basins of the Upper Paraná River Hydrographic Basin (low-flow streams, &lt; 5 m<sup>3</sup>/s) was conducted to assess fish community composition. Our results show that limnological influences at different scales contribute to higher LCBD. However, land use and species richness were not directly linked to this outcome, suggesting that sites with fewer fish species along sub-basins contributed to higher beta diversity. It was concluded that beta diversity is more influenced by limnological characteristics and the position of sampling sites along the longitudinal gradient than that based on variations in species composition (SCBD). Moreover, high LCBD values were even found in portions of the gradient with lower species richness. This means that small streams in the sub-basins of the upper Paraná River are unique and are comprised of varied habitats that contribute to increasing diversity. As such, they should be seen as a target in the development of environmental policies designed to conserve their pristine condition.</p>\u0000 </div>","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"34 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-10-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143120108","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of Temperature on Black Carp (Mylopharyngodon piceus) Age at Sexual Maturity 温度对青鱼性成熟期年龄的影响
IF 1.6 3区 农林科学
Ecology of Freshwater Fish Pub Date : 2024-10-20 DOI: 10.1111/eff.12823
Jiayi Wu, Kim Cuddington
{"title":"Effect of Temperature on Black Carp (Mylopharyngodon piceus) Age at Sexual Maturity","authors":"Jiayi Wu,&nbsp;Kim Cuddington","doi":"10.1111/eff.12823","DOIUrl":"https://doi.org/10.1111/eff.12823","url":null,"abstract":"<p>Black Carp (<i>Mylopharyngodon piceus</i>) is one of the four invasive Asian Carp species (Bighead Carp, <i>Hypophthalmichthys nobilis</i>; Grass Carp, <i>Ctenopharyngodon idella</i>; and Silver Carp, <i>Hypophthalmichthys molitrix</i>) in North America. As benthic predators, Black Carp poses ecological risks to unionids within the Great Lakes and could bring other changes to local benthic communities. One means of assessing invasion risk and potential impact is to determine how critical life history characteristics depend on environmental conditions in new regions. Age at sexual maturity is negatively correlated to the maximum per capita population growth rate and thus can be used to estimate potential population growth for invasive species. Previous studies have found a significant negative relationship between age at maturity and temperature for all three other Asian Carp species, but not for Black Carp. With a more comprehensive dataset, we demonstrate that the same relationship exists for Black Carp. Winter duration is the best predictor of Black Carp age at maturity, followed by average winter air temperature. This significant relationship between age at maturity and temperature was not altered in artificial growing environments. Our results suggested that for Black Carp, temperatures in the winter months are more important for its energy accumulation and maturation and may determine invasion risk in northern locations, such as tributaries of the Great Lakes.</p>","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"34 2","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/eff.12823","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143117623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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