Ecology of Freshwater Fish最新文献_第4页

Fish assemblages on two continents respond to valley- and reach-scale hydrogeomorphic variation: Analyses across three temperate ecoregions

IF 1.6 3区农林科学

Ecology of Freshwater Fish Pub Date : 2024-06-22 DOI: 10.1111/eff.12806

Mark Pyron, Alain Maasri, John Costello, Scott Kenner, Amarbat Otgonganbat, Bud Mendsaikhan, Sudeep Chandra, James H. Thorp, Emily R. Arsenault, Robert Shields, Caleb Artz, Mario Minder

{"title":"Fish assemblages on two continents respond to valley- and reach-scale hydrogeomorphic variation: Analyses across three temperate ecoregions","authors":"Mark Pyron, Alain Maasri, John Costello, Scott Kenner, Amarbat Otgonganbat, Bud Mendsaikhan, Sudeep Chandra, James H. Thorp, Emily R. Arsenault, Robert Shields, Caleb Artz, Mario Minder","doi":"10.1111/eff.12806","DOIUrl":"https://doi.org/10.1111/eff.12806","url":null,"abstract":"Fish assemblages, defined by taxonomy or functional traits, –respond to regional and local habitat variation. Our hypothesis was that fish assemblages could be best predicted using reach-scale (RS) hydrology variables over valley-scale (VS) hydrogeomorphology variables for US and Mongolian rivers. We further predicted that fish traits were predicted better by RS than VS variables. We evaluated the FS and VS hydrogeomorphologies of rivers in the United States and Mongolia in each of three ecoregions: grassland, forest and endorheic. Fishes were collected using a backpack electrofisher, following standard protocols. Constrained ordination analyses were conducted at three scales: among continents, by continents and by individual ecoregions within continents. We found no significant difference in mean variation explained by VS versus RS or by taxonomy versus traits. Ecoregions differed in factors contributing to fish assemblage patterns, likely a result of differences in hydrogeomorphology, hydrological connectivity and historical influences. We found that fish assemblages were structured by hydrogeomorphic processes occurring at VS and RS, and that variables predicting fish assemblages varied with scale and whether fishes were classified by taxonomy or traits. Although anthropogenic impacts were substantially higher for western US rivers than for Mongolian rivers, we were unable to detect strong differences in our ability to predict fish assemblage variation from RS and VS habitat variables.","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"34 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143118042","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

Does size matter? Exploring the influence of body size on predator–prey relationships, hunting mode and prey characteristics in Neotropical fishes

IF 1.6 3区农林科学

Ecology of Freshwater Fish Pub Date : 2024-06-22 DOI: 10.1111/eff.12803

Thiago Deruza Garcia, Larissa Strictar, Rosemara Fugi, Ana Paula Vidotto-Magnoni

{"title":"Does size matter? Exploring the influence of body size on predator–prey relationships, hunting mode and prey characteristics in Neotropical fishes","authors":"Thiago Deruza Garcia, Larissa Strictar, Rosemara Fugi, Ana Paula Vidotto-Magnoni","doi":"10.1111/eff.12803","DOIUrl":"https://doi.org/10.1111/eff.12803","url":null,"abstract":"The development of diverse capture mechanisms during foraging allows predators to select their preys and succeed in their capture, with the least energy expenditure possible. In this context, we seek to understand how prey selection mechanisms exhibited by freshwater fish piscivores relate to their foraging mode. The study was carried out in the floodplain of the Upper Paraná River, where fish were captured from March 2006 to June 2013. The fish were identified and measured, their stomachs were removed, and the stomach contents were analysed. Quantile regressions were used to evaluate possible effects and relationships between the sizes of piscivores and their prey. A significant positive effect on the predator–prey size relationship was observed, indicating an increased size of consumed prey with increased size of piscivore, mainly for Acestrorhynchus lacustris, Hoplerythrinus unitaeniatus, Hoplias intermedius, Hoplias mbigua, Hoplias sp. 2, Pseudoplatystoma corruscans, Rhaphiodon vulpinus and Salminus brasiliensis. Ambush predators were more likely to consume slow-moderate and fast prey, while pursue predators only consume fast prey. Several mechanisms can influence a piscivore's foraging behaviour, and body size is an important factor for both the piscivore and its prey. From the prey's point of view, the way they swim and the complexity of the habitat are important characteristics to ensure their survival. For piscivores, the foraging mode will influence the type of prey consumed, depending on the prey's swimming mode.","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"34 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143118041","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

Population life-history differences and their correlates across a regional spatial scale in largemouth bass (Micropterus nigricans)

IF 1.6 3区农林科学

Ecology of Freshwater Fish Pub Date : 2024-06-21 DOI: 10.1111/eff.12801

Rachael E. Finigan, Elizabeth A. Marschall

{"title":"Population life-history differences and their correlates across a regional spatial scale in largemouth bass (Micropterus nigricans)","authors":"Rachael E. Finigan, Elizabeth A. Marschall","doi":"10.1111/eff.12801","DOIUrl":"https://doi.org/10.1111/eff.12801","url":null,"abstract":"Isolation and limited migration among populations and differences in the environments they inhabit set up conditions for population differentiation of life-history traits, even across a regional spatial scale, such as a statewide landscape of lakes and reservoirs. Our objective was to understand how largemouth bass (Micropterus nigricans) life histories differ across a regional spatial scale (Ohio, USA) and whether environmental differences are influencing this variation. To address this, we (1) described spatial variation in largemouth bass life-history traits, with a specific interest in potential correlations between early-life growth and later-life traits and (2) tested whether life-history traits can be predicted by reservoir characteristics. We found two groups of correlated population traits: the inverse relationship of early-life growth rate with population density and asymptotic length and the positive relationship between adult size and asymptotic length. Early-life growth had a positive relationship (and population density and asymptotic length had a negative relationship) with littoral habitat availability and other environmental conditions expected to enhance early growth. Despite the strong influence of reservoir characteristics on life-history traits in our analysis, the most plausible model could not give precise predictions of these life-history traits, suggesting that the availability of data on other aspects of the populations and environments may improve our ability to understand life-history differences. Overall, our results suggest that, even among recently separated populations, we should expect differences in growth patterns and that we cannot understand drivers of these differences without considering possible correlations in growth patterns across the lifespan.","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"34 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/eff.12801","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143118060","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

Taxonomic and functional homogenization of fish assemblages in an Ozark river associated with pasture land use and constructed water bodies 与牧场土地利用和人造水体有关的一条奥扎克河中鱼类群落的分类和功能同质化

IF 1.6 3区农林科学

Ecology of Freshwater Fish Pub Date : 2024-06-14 DOI: 10.1111/eff.12802

Daniel P. Morrill, Jennifer Main, Grace Davenport, Ginny L. Adams, Steven Reid Adams

{"title":"Taxonomic and functional homogenization of fish assemblages in an Ozark river associated with pasture land use and constructed water bodies","authors":"Daniel P. Morrill, Jennifer Main, Grace Davenport, Ginny L. Adams, Steven Reid Adams","doi":"10.1111/eff.12802","DOIUrl":"10.1111/eff.12802","url":null,"abstract":"Comparisons between contemporary and historic surveys are useful in assessing how fish assemblages respond to anthropogenic stressors. When these stressors degrade aquatic environments, assemblages often experience biotic homogenization. The Strawberry River flows through the Ozarks of northern Arkansas and has been subject to both pasture land use conversion and constructed waterbodies which can degrade aquatic environments and alter fish assemblages. We investigated how fish assemblages in the Strawberry River have changed over a 35-year time span in response to pasture land use and constructed waterbodies. We found evidence of both taxonomic and functional homogenization of fish assemblages from the mid-1980s to 2019. This shift towards homogenization was primarily driven by increases in both site occurrence and abundance of generalist centrarchid species (associated with land use practices) and headwater specialist species (likely related to increased intermittency upstream). We created a composite variable using principal component analysis that represented pasture land use and constructed water body metrics because of their close relationship with each other. We found evidence of early functional differentiation associated with this composite variable; however, we found that over time fish assemblages ultimately experienced greater levels of homogenization associated with this same variable. This pattern of biotic homogenization associated with species additions suggests the Strawberry River is at a tipping point along a subsidy stress gradient, and in the future, we expect to see losses of specialist endemic species if conservation actions are not taken.","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"34 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141340347","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

Spawning periodicity and possible public information use for Nest site selection in the bluehead chub (Nocomis leptocephalus) 蓝头鲦（Nocomis leptocephalus）的产卵周期和可能用于巢址选择的公共信息

IF 1.6 3区农林科学

Ecology of Freshwater Fish Pub Date : 2024-06-14 DOI: 10.1111/eff.12800

Thomas Bustamante, Emmanuel Frimpong

{"title":"Spawning periodicity and possible public information use for Nest site selection in the bluehead chub (Nocomis leptocephalus)","authors":"Thomas Bustamante, Emmanuel Frimpong","doi":"10.1111/eff.12800","DOIUrl":"10.1111/eff.12800","url":null,"abstract":"Nesting animals require information about their environment to place nests in optimal locations. This information can either be derived from an animal's previous experiences (private information), or it may be gained through the observation of the success of conspecifics (public information). This use of public information to locate suitable nesting sites has been explored in birds but not fishes. Many fish construct nests to protect their offspring, and the utilisation of public information could be a suitable strategy for determining which nesting locations would maximise fitness. We studied public and private information use in the bluehead chub, a species of nesting leuciscid in the Southeastern United States, by observing nesting activity and measuring habitat variables along a 0.65 km reach of Toms Creek in Blacksburg, Virginia. We clustered activity data and created generalised linear models to determine if bluehead chubs construct nests within discrete nesting periods during the spawning season and if they use public or private information to select nest sites between these periods. Our results suggest that bluehead chubs construct nests periodically within a single spawning season and use a combination of public and private information when determining suitable nesting sites from one nesting period to another. This study provides some of the first evidence suggesting public information use for nest site selection in a species of fish and opens up a new frontier of research into public information use among fishes.","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"34 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-06-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/eff.12800","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141343528","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

Using eco-evolutionary models to improve management of introgression in brown trout 利用生态进化模型改进褐鳟的引种管理

IF 1.6 3区农林科学

Ecology of Freshwater Fish Pub Date : 2024-06-05 DOI: 10.1111/eff.12789

Dorinda Folio, Arnaud Caudron, Laure Vigier, Sylvie Oddou-Muratorio, Jacques Labonne

{"title":"Using eco-evolutionary models to improve management of introgression in brown trout","authors":"Dorinda Folio, Arnaud Caudron, Laure Vigier, Sylvie Oddou-Muratorio, Jacques Labonne","doi":"10.1111/eff.12789","DOIUrl":"10.1111/eff.12789","url":null,"abstract":"The management of intraspecific diversity in many species is usually disconnected from eco-evolutionary processes happening in natura. A classic example is embodied in the problem of introgression in hybridized fish populations, wherein management practices are generally unaware of any selective process at work, and therefore generally rely on numbers (adding or removing individuals) to reduce introgression. Such an example can be observed in the French Alps, where native Mediterranea (MED) brown trout have been highly introgressed through decades of stocking with domesticated Atlantic (ATL) brown trout. Recently however, new results shed light on a potential selective mechanism that may affect differentially the fitness of MED and ATL genes depending on the environment (GxE interaction). Using a demogenetic agent-based model able to account for such GxE interaction, we simulate a management scenario implemented in 2005 by some biodiversity managers and scientists, who attempted to restore the Mediterranea gene pool using translocation of near pure MED individuals in Atlantic-dominated areas. We show that the model is unable to recreate the observed introgression dynamics if the GxE interaction is not included. This finding implies that (i) eco-evolutionary mechanisms can have large effects on introgression dynamics on very short time scales and (ii) management of intraspecific diversity should increasingly rely on these natural mechanisms, so as to improve management targets and facilitate adaptation to rapid environmental changes.","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"33 4","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141382992","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

Effects of the Three Gorges Dam on the mandarin fish larvae (Siniperca chuatsi) in the middle reach of the Yangtze River: Spatial gradients in abundance, feeding, growth, and survival 三峡大坝对长江中游鳜鱼幼体的影响：丰度、摄食、生长和存活的空间梯度

IF 1.6 3区农林科学

Ecology of Freshwater Fish Pub Date : 2024-06-05 DOI: 10.1111/eff.12795

Yiqing Song, Juan Cao, Zhen Wang, Fei Cheng, Bjorn Schmidt, Songguang Xie

{"title":"Effects of the Three Gorges Dam on the mandarin fish larvae (Siniperca chuatsi) in the middle reach of the Yangtze River: Spatial gradients in abundance, feeding, growth, and survival","authors":"Yiqing Song, Juan Cao, Zhen Wang, Fei Cheng, Bjorn Schmidt, Songguang Xie","doi":"10.1111/eff.12795","DOIUrl":"10.1111/eff.12795","url":null,"abstract":"Large dams significantly impact river ecosystems by disrupting connectivity, altering physicochemical variables, and modifying flow regimes. These modifications influence the spatial and temporal dynamics of biological processes and species distributions. While much research has focused on potamodromous species, there remains a gap in understanding the recovery gradients of resident species in dam-altered rivers. This study examines the responses of larvae of a resident species, the mandarin fish (Siniperca chuatsi), to environmental alterations caused by the Three Gorges Dam (TGD) in the middle reach of the Yangtze River. We hypothesized that larval abundance, feeding, growth, and survival would exhibit longitudinal recovery gradients, improving with the increased distance from the TGD. Our results confirm this hypothesis, showing that larvae further from the TGD exhibited higher abundance, increased feeding intensity, enhanced growth rates, improved survival rate, and earlier peak abundance and hatching dates. Key environmental factors, including water temperature and discharge, increased downstream, while transparency decreased. Major tributary inputs significantly contributed to these recovery gradients. The observed longitudinal gradients in larval attributes mirrored environmental changes, underscoring the TGD impact on population recruitment. These results highlight the broader implications of dam-induced changes on resident species recruitment, potentially affecting entire fish communities. Our study contributes to understanding the distinct spatial patterns of population trends, providing valuable insights for designing more effective conservation and management practices for resident freshwater fishes in large regulated rivers.","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"33 4","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141382836","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

A review of the hybridisation potential of brown trout with particular reference to invaded environments, and a case study from Newfoundland 回顾褐鳟的杂交潜力，特别是入侵环境，以及纽芬兰的案例研究

IF 1.6 3区农林科学

Ecology of Freshwater Fish Pub Date : 2024-06-05 DOI: 10.1111/eff.12796

Craig F. Purchase, Connor P. Hanley, Tyler H. Lantiegne, Steven Poulos

{"title":"A review of the hybridisation potential of brown trout with particular reference to invaded environments, and a case study from Newfoundland","authors":"Craig F. Purchase, Connor P. Hanley, Tyler H. Lantiegne, Steven Poulos","doi":"10.1111/eff.12796","DOIUrl":"10.1111/eff.12796","url":null,"abstract":"Hybridisation is a complex process that begins with mating. Females have more to lose with each hybrid fertilisation than males, so they should avoid it. Even if females choose con-specific males as preferred mates, they often cannot control which additional males release sperm during spawning. Polyandry is ubiquitous and may result in hetero-specific sperm competition between males of different species. In such cases, cryptic female choice (the ability to bias paternity towards certain males under sperm competition) is the last line of defence to prevent hybridisation of her eggs and is highly adaptive if it enables con-specific sperm preference. Such seems to be the case with the hybridisation of Atlantic salmon (Salmo salar) and brown trout (S. trutta) in their native Europe. Under hetero-specific sperm competition, hybrid fertilisations in these fish are reported to be reduced via ovarian fluid-mediated cryptic female choice. It is not known, however, whether the strength of this mechanism is dependent on reinforcement and thus, the historical sympatry/allopatry of hybridising populations. Brown trout are one of the world's worst invasive species. Ecological impacts arise through competition with other species (e.g. Galaxids in the southern hemisphere, Oncorhynchus in western North America). Eastern North America contains native salmonids that evolved in the absence of brown trout but have gametes that are compatible. The 140 -year-old brown trout invasion of Newfoundland is ground zero to study these potential interactions. Their relatively low spread rate across the island may be the result of inherent poor productivity, but data suggest it could also be a function of hybridisation with native Atlantic salmon and brook char (Salvelinus fontinalis).","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"33 4","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141383502","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

Sexual dimorphism and species divergence between a habitat generalist and a habitat specialist 栖息地通才和栖息地专才之间的性二态和物种分化

IF 1.6 3区农林科学

Ecology of Freshwater Fish Pub Date : 2024-06-05 DOI: 10.1111/eff.12799

Hiranya Sudasinghe

{"title":"Sexual dimorphism and species divergence between a habitat generalist and a habitat specialist","authors":"Hiranya Sudasinghe","doi":"10.1111/eff.12799","DOIUrl":"10.1111/eff.12799","url":null,"abstract":"Sexual dimorphism, the phenotypic differences between males and females within a species, is widespread in the animal kingdom. This study investigates the extent of sexual dimorphism and species divergence in external morphology in two closely related freshwater fish species, Devario malabaricus and D. micronema, in Sri Lanka. Devario malabaricus, a habitat generalist, inhabits a wide range of aquatic environments, while D. micronema, a habitat specialist, resides in shaded rainforest streams. The study reveals size differences between the two species: D. malabaricus is consistently larger than D. micronema. However, there are no size differences between the sexes within each species. Several additional morphological traits, such as head length, interorbital width, predorsal length and postdorsal length display divergence between the species as well as between the sexes within each species; these patterns are also consistent across populations. The sexually dimorphic traits are similar between the two species despite their distinct ecological habitats. However, Devario malabaricus exhibit stronger sexual dimorphism compared to D. micronema, supporting the prediction of a positive relationship between the extent of sexual dimorphism and ecological generalism. The study highlights the importance of considering sexual dimorphism in morphometric comparisons in taxonomic studies of Devario and suggests that divergent selection between the sexes contributes to morphological variation in this group.","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"34 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/eff.12799","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141382351","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

A comparison of acoustic tag sizes on wild Atlantic salmon Salmo salar L. smolt migration success and behaviour 比较声学标签尺寸对野生大西洋鲑幼鱼迁移成功率和行为的影响

IF 1.6 3区农林科学

Ecology of Freshwater Fish Pub Date : 2024-06-05 DOI: 10.1111/eff.12798

Angus J. Lothian, Jessica Rodger, Lorna Wilkie, Marcus Walters, Richard Miller, Karen Muller, Colin E. Adams

{"title":"A comparison of acoustic tag sizes on wild Atlantic salmon Salmo salar L. smolt migration success and behaviour","authors":"Angus J. Lothian, Jessica Rodger, Lorna Wilkie, Marcus Walters, Richard Miller, Karen Muller, Colin E. Adams","doi":"10.1111/eff.12798","DOIUrl":"10.1111/eff.12798","url":null,"abstract":"Tracking of animal migrations using telemetry technologies needs to take into consideration the burden that the tag exerts on the animal. Here, we examined the potential impacts of acoustic tags of two sizes (nominally a ‘V6’ [smaller] and ‘V7’ [larger]) on the downstream riverine migration success and behaviour of wild Atlantic salmon (Salmo salar L.) smolts. One hundred fish were tagged with either a V6 or V7 tag. Tag burden (tag: fish weight) ranged from 1.88% to 7.39% and differed significantly between fish tagged with the V6 (mean [SD] = 3.63% [0.51%]) and the V7 tags (mean [SD] = 5.84% [0.95%]). There was no significant difference in the in-river migration failure between the two groups when tested with a time-to-event analysis. There were also no differences in other elements of the migratory behaviour (rate of movement, time of detection and residency time) between the two tagging groups. These data support the use of acoustic tracking for monitoring smolt migration and highlight that tagging of smaller smolts at up to 7.39% tag burden to gain a more representative understanding of migration success and behaviours across a smolt population.","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"33 4","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141382359","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