Ecology of Freshwater Fish最新文献_第8页

The effect of water turbidity on prey consumption and female feeding patterns in African turquoise killifish 水体浑浊度对非洲绿松石鳉猎物消耗和雌鱼摄食模式的影响

IF 1.8 3区农林科学

Ecology of Freshwater Fish Pub Date : 2024-03-04 DOI: 10.1111/eff.12774

Jakub Žák, Pavlína Šuhajová

{"title":"The effect of water turbidity on prey consumption and female feeding patterns in African turquoise killifish","authors":"Jakub Žák, Pavlína Šuhajová","doi":"10.1111/eff.12774","DOIUrl":"10.1111/eff.12774","url":null,"abstract":"Water turbidity alters prey detectability and prey selection by a predator. In dimorphic mesopredators, the effect of water turbidity on foraging success may be sex specific, primarily due to sex differences in reproductive allotment, body size and vulnerability to predation. To experimentally test the effect of turbidity on prey consumption with respect to sex, we used turquoise killifish (Nothobranchius furzeri), a small fish from ephemeral savanna pools in southeast Africa that vary widely in turbidity. Large males possess conspicuous nuptial coloration while females are smaller and drab. Vision is assumed to be a fundamental sense for turquoise killifish, despite often living in very turbid water. As mesopredators, killifish regulate the invertebrate community in ephemeral pools. We tested the consumption of bloodworms (benthic and red-coloured) and glassworms (pelagic and transparent) under clear (<1NTU) and turbid (320 NTU) water conditions. We found that turquoise killifish maintained their overall foraging success irrespective of turbidity. In both the clear and turbid water, the females consumed three times more food than males relative to their body mass. This likely stems from the females' high nutritional demands due to daily reproduction. It also suggests that females are not risk-aversive in clear water despite their smaller size. Water turbidity affected the type of prey consumed by turquoise killifish and demonstrated its potential to affect the community structure of invertebrate species in ephemeral pools.","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"33 3","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/eff.12774","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140266846","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 strength of density dependence on body size of young-of-the-year masu salmon, Oncorhynchus masou, varies over ontogeny in Horokashubuto stream, Hokkaido, northern Japan 日本北部北海道 Horokashubuto 溪流中的马苏鲑（Oncorhynchus masou）幼年体型与密度相关性的强度随个体发育而变化

IF 1.8 3区农林科学

Ecology of Freshwater Fish Pub Date : 2024-03-04 DOI: 10.1111/eff.12776

Koh Hasegawa, Jumpei Okado, Genki Sahashi, Sho Fukui, Yuhei Ogura, Kazumasa Ohkuma

{"title":"The strength of density dependence on body size of young-of-the-year masu salmon, Oncorhynchus masou, varies over ontogeny in Horokashubuto stream, Hokkaido, northern Japan","authors":"Koh Hasegawa, Jumpei Okado, Genki Sahashi, Sho Fukui, Yuhei Ogura, Kazumasa Ohkuma","doi":"10.1111/eff.12776","DOIUrl":"10.1111/eff.12776","url":null,"abstract":"The relationships between body size and density of salmonids in natural streams have been well studied, and density-dependent growth (somatic growth) is interpreted as the principal mechanism responsible for the relationship. Moreover, the body size–density relationship is known to vary over ontogeny. However, the relationship has been studied mostly by experimental procedures (e.g. stocking fish into streams), and knowledge about the relationship in natural populations (e.g. no human-induced input of fish) is still inadequate. In this study, we compared the relationships between body size and density of young-of-the-year (YOY) masu salmon, Oncorhynchus masou, between different ontogenetic stages, that is, fry (spring) and juveniles (autumn). We used the monitoring data of YOY body sizes and densities across three study sites collected from Horokashubuto stream in Hokkaido, northern Japan, from 2014 to 2022. In the juvenile stage, YOY body size correlated negatively with increasing density. This pattern is typical of the density dependence of salmonid growth demonstrated in many previous studies. In the fry stage, however, YOY body size correlated positively with increasing density. This study suggested that the patterns of density dependence vary as functions of the ontogenetic stages of salmonids.","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"33 3","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140080115","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

Heterogenisation of riverine ichthyofauna diversity by small hydropower dams 小水电大坝对河流鱼类多样性的异质性影响

IF 1.8 3区农林科学

Ecology of Freshwater Fish Pub Date : 2024-02-28 DOI: 10.1111/eff.12775

Dandhara Rossi Carvalho, Francisco Gerson Araújo

{"title":"Heterogenisation of riverine ichthyofauna diversity by small hydropower dams","authors":"Dandhara Rossi Carvalho, Francisco Gerson Araújo","doi":"10.1111/eff.12775","DOIUrl":"10.1111/eff.12775","url":null,"abstract":"Dams modify river physical and chemical attributes. This disruption hampers fish migration, leading to the introduction of non-native species and losses of specialised native species. Small hydropower plants (SHPs) have been suggested for replacing large dams to minimise reservoir size and preserve natural flow regimes. We evaluated the influences of two SHPs on the ichthyofauna in a tropical river, comparing fish taxonomic and functional beta-diversity in three periods. Period-1 preceded SHP construction (Pre-2008), when the river was free-flowing. Period-2 was 1 year after completion of SHP construction (Post-2012). Period-3 was after 10 years of SHP operation (Current-2021). We calculated 10 functional ichthyofaunal attributes based on 12 quantitative morphometric measurements related to habitat use, feeding, and locomotion. The ichthyofaunal composition varied among the periods (p = .001) and seasons (p = .009), with the highest species richness in the Post period compared to the other two periods (p = .002). Abundance significantly decreased over time (p = .004). Taxonomic beta-diversity increased in the Post period remaining stable in the Current period. Functional beta-diversity did not change between the Pre and Post periods but significantly increased in the Current period. The turnover component had the greater influence on both taxonomic and functional beta-diversity, with no temporal changes observed in nestedness. The ichthyofauna appears to have undergone heterogenisation and restructuring. Changes include the emergence of more tolerant species (e.g., Hoplosternum littorale and Pimelodus maculatus), displacement of native and sensitive species (e.g., Pogonopoma parahybae and Steindachneridion parahybae), and colonisation by a non-native predator (Plagioscion squamosissimus). This indicates that small-scale projects such as SHPs harm fish populations by altering habitats and restructuring the ichthyofauna.","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"33 3","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140420132","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

Pre-impoundment fish migrations in the Mobile Basin, Alabama 阿拉巴马州莫比尔盆地蓄水前的鱼类洄游

IF 1.8 3区农林科学

Ecology of Freshwater Fish Pub Date : 2024-02-26 DOI: 10.1111/eff.12771

Henry J. Hershey, Russell A. Wright, James D. Williams, Patrick E. O'Neil, Dennis R. DeVries

{"title":"Pre-impoundment fish migrations in the Mobile Basin, Alabama","authors":"Henry J. Hershey, Russell A. Wright, James D. Williams, Patrick E. O'Neil, Dennis R. DeVries","doi":"10.1111/eff.12771","DOIUrl":"https://doi.org/10.1111/eff.12771","url":null,"abstract":"Assessing the status of several migratory fishes in the Mobile River Basin, Alabama, has been complicated due to a general lack of historical data on their life history, habitat requirements, and distributions. Whether distributions were restricted by natural or man-made barriers to migration is difficult to answer because few scientific collections were made before dams were built, and the earliest dams were built at the largest biogeographic barrier in the basin: the geological fall line. Therefore, we used what information was available, including anecdotal information, primarily records from archived newspapers and government reports, to describe the ranges of six migratory species prior to the construction of dams in the Mobile Basin. We describe the complicated history of Alabama Shad Alosa alabamae and show that range declines may have been masked by the stocking of American Shad Alosa sapidissima in the late 19th century. We show that Gulf Sturgeon Acipenser oxyrinchus desotoi probably migrated well above the fall line in the Coosa River, and may have been sympatric with Lake Sturgeon Acipenser fulvescens. We found no records of Alabama Sturgeon Scaphirhynchus suttkusi above the fall line. American Eel Anguilla rostrata migrated above the fall line in every Mobile Basin river before dams were built. Finally, Paddlefish Polyodon spathula may have once occurred above the fall line in at least two rivers, but they persist today in impounded reaches in the coastal plain, unlike some other species. We hope that future work will continue to consider archival sources of information to re-trace the histories of imperilled species.","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"33 2","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/eff.12771","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140181718","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

Phenological variation in the life histories of amphidromous gobies endemic to the Hawaiian islands 夏威夷群岛特有的两栖虾虎鱼生活史的季节变化

IF 1.8 3区农林科学

Ecology of Freshwater Fish Pub Date : 2024-02-26 DOI: 10.1111/eff.12772

Heidi Heim-Ballew, Michael J. Blum, Peter B. McIntyre, Nate Bickford, J. Derek Hogan

{"title":"Phenological variation in the life histories of amphidromous gobies endemic to the Hawaiian islands","authors":"Heidi Heim-Ballew, Michael J. Blum, Peter B. McIntyre, Nate Bickford, J. Derek Hogan","doi":"10.1111/eff.12772","DOIUrl":"10.1111/eff.12772","url":null,"abstract":"Despite the benefits that can come from coordinated movement, many diadromous fishes have evolved partial migration strategies, where a portion of a population does not migrate. Co-occurring life-history variants might nonetheless gain some advantage by exhibiting congruent phenologies, with key events timed to follow the same cue. Here, we assess this possibility by examining otolith microchemistry and structure to quantify the lunar periodicity of hatching and metamorphosis according to migration strategy in a facultative amphidromous goby endemic to Hawai'i. Our analyses corroborated prior evidence that Awaous stamineus exhibits partial migration and that residential A. stamineus are often proportionately more abundant than the migratory form. Contrary to expectation, we found a significant difference in hatching time between migratory and residential A. stamineus. A higher proportion of A. stamineus migrants hatched at the full moon and metamorphosed at the new moon, whereas residents exhibited the opposite phenology. Comparisons to Sicyopterus stimpsoni intended to provide a broader context revealed that the obligately amphidromous species tends to hatch at the new moon and metamorphose at the full moon, mirroring the phenology of residential A. stamineus. Evidence of convergent lunar phenologies suggests that synchronising life-history events can confer benefits that extend beyond species boundaries. Notably, phenological discordance could be acting as a prezygotic isolating barrier between sympatric life-history variants, pointing to the presence of heretofore unrecognised evolutionary diversity within partially migratory species like A. stamineus.","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"33 3","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140428408","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

Instream barriers contribute to population isolation of a small-bodied, benthic, headwater-specialist fish (Percidae) 溪流障碍导致一种体型较小、底栖、专攻上游水域的鱼类（鲈科）的种群隔离

IF 1.8 3区农林科学

Ecology of Freshwater Fish Pub Date : 2024-02-12 DOI: 10.1111/eff.12769

River A. Watson, Alexis V. Culley, Catherine G. Haase, Matthew R. Thomas, Stephanie L. Brandt, Michael A. Floyd, Rebecca E. Blanton

{"title":"Instream barriers contribute to population isolation of a small-bodied, benthic, headwater-specialist fish (Percidae)","authors":"River A. Watson, Alexis V. Culley, Catherine G. Haase, Matthew R. Thomas, Stephanie L. Brandt, Michael A. Floyd, Rebecca E. Blanton","doi":"10.1111/eff.12769","DOIUrl":"10.1111/eff.12769","url":null,"abstract":"Genetic differentiation in aquatic systems is often driven by geographic distance (isolation by distance) due to the linear and hierarchical distribution of populations, but habitat fragmentation often exacerbates this effect by decreasing population connectivity, leading to isolation by resistance. Stronghold populations of the Kentucky Arrow Darter (Etheostoma spilotum) in the South Fork Kentucky River system within the Daniel Boone National Forest of eastern Kentucky, USA have a high population structure not explained by distance alone. Higher than expected levels of genetic differentiation among proximate populations were hypothesized to be driven by land-use change, but this was not previously tested. Here we use a riverscape genetics approach to test for the effects of natural landscape features including slope, elevation and stream size, and anthropogenically altered habitat features, including specific conductance (conductivity), culverts and forest cover, on population connectivity and genetic diversity of E. spilotum. We found isolation of populations among all tributary systems and a strong, positive relationship between genetic and geographic distances as expected. However, high conductivity levels due to surface coal mining best explain the population structure observed. We also found signatures of low genetic diversity overall and indicators that culverts may limit upstream movements of E. spilotum. This study provides a novel fine-scale view of the effects of instream and landscape features on connectivity among, and genetic diversity within populations of an imperilled, small-bodied, benthic fish.","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"33 2","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/eff.12769","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139782889","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

Low-head dam fragmentation, habitat alteration, and invasive predators degrade a Western United States stream fish assemblage 低水头水坝破碎化、栖息地改变和外来捕食者使美国西部溪流鱼群退化

IF 1.8 3区农林科学

Ecology of Freshwater Fish Pub Date : 2024-02-12 DOI: 10.1111/eff.12773

Matthew R. Haworth, Kevin R. Bestgen

{"title":"Low-head dam fragmentation, habitat alteration, and invasive predators degrade a Western United States stream fish assemblage","authors":"Matthew R. Haworth, Kevin R. Bestgen","doi":"10.1111/eff.12773","DOIUrl":"10.1111/eff.12773","url":null,"abstract":"Dams fragment streams, alter hydrology and habitat, and facilitate establishment of nonnative species worldwide to the detriment of native biota. Understanding and mitigating these effects to conserve and restore stream fish assemblages has relied on short- and long-term datasets to assess acute and chronic change through time, craft management strategies, and measure remediation success. We used sampling records collected over a 29-year period (1993–2021) to examine likely causes of fish assemblage change in the Cache la Poudre River, Colorado, USA. Numerous low-head dams have reduced connectivity and altered flow, temperature, and habitat in the transition zone, a reach that historically supported rare and sensitive taxa valuable to regional biodiversity. We found diversity, distribution, and abundance of native species declined since the early 1990s, with formerly rare taxa extirpated and some common species becoming rare. Native taxa remained numerically dominant in warmer downstream reaches most affected by streamflow diversion but were incrementally reduced in richness and abundance upstream of low-head dams without fishways. Concurrently, nonnative Brown Trout Salmo trutta increased in distribution and abundance, dominating upstream reaches that receive cooler and more stable flows, and expanding into downstream reaches where they were formerly absent, with likely negative consequences for native fishes. In the absence of mitigation, these collective effects, plus recent wildfire disturbance and future water development, will continue to degrade stream fish assemblages in our study area, and worldwide, where resource managers face the often-competing interests of conserving native species, providing recreational fisheries, and meeting increasing water demands.","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"33 3","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/eff.12773","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139783705","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

Life-history connections to long-term fish population trends in a species-rich temperate river 一条物种丰富的温带河流中鱼类种群长期趋势的生命史联系

IF 1.8 3区农林科学

Ecology of Freshwater Fish Pub Date : 2024-02-06 DOI: 10.1111/eff.12767

Andrew J. Nagy, Mary C. Freeman, Brian J. Irwin, Seth J. Wenger

{"title":"Life-history connections to long-term fish population trends in a species-rich temperate river","authors":"Andrew J. Nagy, Mary C. Freeman, Brian J. Irwin, Seth J. Wenger","doi":"10.1111/eff.12767","DOIUrl":"10.1111/eff.12767","url":null,"abstract":"Fishes exhibit a diverse range of traits encompassing life-history strategies, feeding behaviours and spawning behaviours. These traits mediate fish population responses to changing environmental conditions such as those caused by anthropogenic stressors. The Conasauga River, located in northwestern Georgia and southeastern Tennessee, USA, hosts a diverse assemblage of over 75 species of freshwater fish, some of which are locally or regionally endemic, and many of which are imperilled. Annual monitoring data have shown population declines in multiple fish species of conservation concern in the Conasauga River since at least the 1990s, raising the possibility that other taxa could be declining as well. We quantified temporal changes in fish communities at six shoal sites sampled annually in most years from 1996 to 2022, and asked whether species traits hypothesized to underlie population vulnerability to environmental alteration were correlated with species-specific trends for 32 taxa. We estimated that total counts of fish in annual samples declined by ~2% per year, although declines were uneven among species and generally greater for less abundant taxa. Tests for species traits corresponding to temporal population trends provided evidence that crevice-spawning minnows and smaller-bodied taxa had steeper declines compared with broadcast spawners and larger, longer-lived, more fecund taxa. Lower abundance, reliance on a particular habitat feature, and life-history traits that may limit population resilience to disturbance may all prove useful for identifying riverine fishes at particular risk of future population decline.","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"33 2","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-02-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/eff.12767","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139859199","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

Effects of hydrological and spatial seasonality on taxonomic and functional diversity of fish assemblages in an Amazonian floodplain lake 水文和空间季节性对亚马逊洪泛平原湖泊鱼类群落分类和功能多样性的影响

IF 1.8 3区农林科学

Ecology of Freshwater Fish Pub Date : 2024-01-13 DOI: 10.1111/eff.12770

Severino Adriano de Oliveira Lima, Humber Agrelli Andrade, Raniere Garcez Costa Sousa

{"title":"Effects of hydrological and spatial seasonality on taxonomic and functional diversity of fish assemblages in an Amazonian floodplain lake","authors":"Severino Adriano de Oliveira Lima, Humber Agrelli Andrade, Raniere Garcez Costa Sousa","doi":"10.1111/eff.12770","DOIUrl":"10.1111/eff.12770","url":null,"abstract":"The floodplain lakes of the Amazon constitute one of the most important aquatic systems in terms of fish biodiversity. These ecosystems are influenced by the flood pulse, which in turn, affects the behaviour of fish communities within this lake ecosystem. In this study, we tested the hypothesis that the facets of taxonomic and functional diversity may be influenced by the conditions of ‘patches’ of internal habitats, considering the margins and central environments of a floodplain lake in the Amazon. Lake Cujubim, located on the right bank of the Madeira River, was evaluated via fisheries carried out in the high-water and low-water phases, during the day and night, and considering two location strata. The results suggest that the absence of significant differences in alpha taxonomic diversity between the two phases may be a possible seasonal mischaracterisation in Lake Cujubim attributed mainly to dam constructions along the Madeira River. Apparently, no major differences occur in the assembly of fish in terms of their taxonomic and functional characteristics, regardless of luminosity. In the strata of the locations, demonstrates noticeable habitat patches, with the margins being bioregions with high incidences of individuals of the Engraulidae family, confirmed by both taxonomic and functional diversity (alpha and beta). It can be seen that, even in connected lakes, there are differentiated metacommunities between the bioregions, thus forming patches of habitat, and that the shores of the lake, especially those located in proximity or distant from the river, are more suitable areas for food and refuge.","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"33 3","pages":""},"PeriodicalIF":1.8,"publicationDate":"2024-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139531361","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

Artificial light at night affects fish passage rates in two small-sized Cypriniformes fish 夜间人工照明影响两种小型鲤形目鱼类的通过率

IF 1.8 3区农林科学

Ecology of Freshwater Fish Pub Date : 2023-12-31 DOI: 10.1111/eff.12766

Fabio Tarena, Claudio Comoglio, Alessandro Candiotto, Daniel Nyqvist

{"title":"Artificial light at night affects fish passage rates in two small-sized Cypriniformes fish","authors":"Fabio Tarena, Claudio Comoglio, Alessandro Candiotto, Daniel Nyqvist","doi":"10.1111/eff.12766","DOIUrl":"10.1111/eff.12766","url":null,"abstract":"An increasing presence of instream structures such as weirs, dams, culverts and reservoirs degrades habitats, fragments rivers and blocks fish movements worldwide. Longitudinal river movements are fundamental for many fish species and the most widespread solution to restore longitudinal connectivity is the implementation of different fish passage solutions. Fishway functionality, however, is highly variable. To design a functional fishway, several aspects of the fish's interaction with its environment need to be taken into consideration. Artificial light at night (ALAN) can affect a range of different behaviours in fish, from activity and movement to feeding and predator–prey relationships. In a fish passage setting, fish are exposed to artificial light at night (ALAN) in the form of light pollution, but, sometimes, also as part of the fish passage solution. Although likely highly species specific, the effect of artificial light on fish passage behaviour has been little explored. Here we study the passage behaviour of two small-sized fish species, European gudgeon (Gobio gobio) and Italian riffle dace (Telestes muticellus), over a scaled deep side notch weir in a hydraulic flume in three different light conditions: daylight, darkness and ALAN. Although both species passed the obstacle at high efficiencies under all light conditions, their passage behaviours were influenced by light, particularly at the higher levels. While ALAN reduced passage success and resulted in delayed passage for gudgeon, riffle dace passed at higher rates under the artificial light compared to night treatment. Both results indicate a risk of negative effects from ALAN on passage performance at real fishways—or movement rates in lit areas of natural streams—for both species. Independent of light conditions, individuals of both species also passed faster after repeated trials, demonstrating learning in a fish passage context.","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"33 3","pages":""},"PeriodicalIF":1.8,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/eff.12766","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139133722","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