Ecology of Freshwater Fish最新文献

{"title":"Invasive Cichlids Display Higher Aggression During Nest Defence Compared to the Native Mexican Mojarra","authors":"Marco Franco,&nbsp;Elsah Arce","doi":"10.1111/eff.12815","DOIUrl":"https://doi.org/10.1111/eff.12815","url":null,"abstract":"<div>\u0000 \u0000 <p>Nest defence is one component of parental investment by which individuals can increase the survival of their offspring. Aggressive behaviours and the time spent protecting nests are determining factors in the reproductive success of cichlid species. The Mexican mojarra is the only cichlid native to the Balsas River Basin in Mexico. At least four invasive cichlids have been introduced, including the convict cichlid and the spotcheek cichlid. These three species establish their nests in the River and defend them aggressively. We quantified the number of nests, aggressive behaviours and time spent in the nest by parents of the native species and these two invasive species. We expected that the invasive parents would be more aggressive during defence, spent more time protecting the eggs, and would have a higher density of nests. We also explored differences in nest defence between the sexes within each species. We found that invasive cichlids had a greater number of nests than the Mexican mojarra. In the two invasive species, there was no difference between males and females in the time spent in the nest or the number of aggressive behaviours. In contrast, male Mexican mojarras spent less time in the nest and performed fewer aggressive behaviours than their mates. The smaller number of nests and nest defence behaviour of this native species could compromise its reproductive success and population size. This differential nest defence between the Mexican mojarra and the invasive cichlids could have negative implications for the physiology, reproduction, and health of this native cichlid.</p>\u0000 </div>","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"34 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143117768","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}

{"title":"Hitting and Unhitting the Pause Button: Variable Hatching Patterns of Annual Killifish Embryos Over a Wetland Wet–Dry Cycle","authors":"Vinicius Weber,&nbsp;Felipe Alonso,&nbsp;Robson Souza Godoy,&nbsp;Luis Esteban Krause Lanés,&nbsp;Mateus Marques Pires,&nbsp;Cristina Stenert,&nbsp;Adriana Gava,&nbsp;Leonardo Maltchik","doi":"10.1111/eff.12816","DOIUrl":"https://doi.org/10.1111/eff.12816","url":null,"abstract":"<div>\u0000 \u0000 <p>Hatching dynamics is key to population structure of annual fishes in temporary wetlands. Given the risk of false starts due to unpredictable hydroperiods, annual fish may employ risk-spreading strategies in their hatching patterns consistent with bet hedging (such as the partial hatching of their egg bank and variable number of hatching cues) after being exposed to floods. However, the extent to which annual fish resort to bet hedging (as well as their potential drivers) over a wet–dry cycle is poorly understood. We assessed the hatching patterns of a South American killifish (<i>Matilebias cyaneus</i>; Cyprinodontiformes: Rivulidae) collected at different hydrological phases of a temporary wetland to test for variation in bet hedging over a wet–dry cycle. We incubated wild eggs of <i>M</i>. <i>cyaneus</i> obtained from male–female pairings separately reared in tanks originating in the ‘early-wet’, ‘drying’ and ‘late-wet’ phases of a temporary wetland and examined hatching patterns across a sequence of hydration trials under common-garden conditions. We found variation in (i) the number of hatched and unhatched eggs and (ii) the number of hatched eggs across hydration trials among clutches from each phase (while controlling for parentage). Our results show that <i>M</i>. <i>cyaneus</i> variably commit to bet-hedging hatching strategies over a wet–dry cycle, and suggest that the environmental conditions at specific periods of the year and the parental age at which eggs are produced drive annual fish hatching patterns.</p>\u0000 </div>","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"34 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143117469","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}

{"title":"Spatial and Ontogenetic Patterns in the Trophic Ecology of Two Predatory Fishes in a Large River","authors":"Shaley A. Valentine,&nbsp;Gregory W. Whitledge","doi":"10.1111/eff.12814","DOIUrl":"https://doi.org/10.1111/eff.12814","url":null,"abstract":"<p>Fishes use a variety of physical and biological resources that shift ontogenetically, seasonally and spatially. Quantifying what resources such as prey are required for persistence can improve understanding of ecological needs of fishes and riverine macrosystem functioning. Bowfin (<i>Amia ocellicauda</i>) and largemouth bass (<i>Micropterus nigricans</i>) cohabitate in their native range and potentially compete with one another. Yet, there have been no direct comparisons of their diets across spatial gradients to assess whether they partition resources or shift in prey use. We used multiple univariate and multivariate analyses to compare diet composition, diet overlap, feeding strategy, prey importance and diet partitioning between largemouth bass and bowfin across three reaches of the Upper Mississippi River. Largemouth bass ontogenetically shifted their diet from aquatic invertebrates to fishes and a more diverse assemblage of aquatic invertebrates. Bowfin and adult largemouth bass were top predators which consumed mostly crayfish and fish and overlapped in their diets. Despite overlapping diets, predators partitioned resources by consuming different lengths and abundances of prey, and largemouth bass had greater trophic plasticity. Within a predator group, few differences in diets existed spatially, underscoring the relative homogeneity in resource use potentially from similarities in the river's physical structure. Combined, prey use likely differed sufficiently to reduce potential competition between largemouth bass and bowfin, allowing long-term coexistence in this system. Our results also highlighted the importance of crayfishes to riverine food webs and underscored the use of multiple prey and habitat types that sustain these predators.</p>","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"34 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/eff.12814","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143114087","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}

{"title":"Feeding ontogeny: A new approach to predator–prey interactions","authors":"Rafael Rogério Rosa,&nbsp;Sybelle Bellay,&nbsp;Andréa Bialetzki","doi":"10.1111/eff.12813","DOIUrl":"https://doi.org/10.1111/eff.12813","url":null,"abstract":"<p>Diets of fish larvae may vary within populations and among species and are affected by larval prey availability and foraging capacity. We aimed to describe the diet of fish larvae based on empirical field observations, emphasizing the interaction and organization of the predator–prey network using <i>Auchenipterus osteomystax</i> as a species model. The network showed few interactions (low connectance and modularity) but a nested structure (some items that had fewer records tended to occur together with the most frequent ones), low complementary specialization (the proportions of ingested items tended to be equivalent) and a pattern of segregation (some items tended not to be consumed together) in the use of resources among individuals. Robustness was low when the removal of prey with a higher consumption frequency occurred. The correlation between morphological variables and network attributes was significant and positive for abundance and strength, while the correlation with nested rank was negative. The availability of suitable dietary resources is likely to be the key factor for success and survival in the early stages of development. With changes in morphology during larval development, <i>A</i>. <i>osteomystax</i> showed a generalist position in the network as its predation capacity increased. A new approach to trophic ecology studies of fish larvae incorporating network analysis may help explain the individual characteristics of larvae and assess the pattern of interactions in the population.</p>","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"34 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-08-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143119640","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}

{"title":"Dispersal and gene flow in anadromous salmonids: A systematic review","authors":"Amaïa Lamarins,&nbsp;Stephanie M. Carlson,&nbsp;Mathieu Buoro","doi":"10.1111/eff.12811","DOIUrl":"https://doi.org/10.1111/eff.12811","url":null,"abstract":"<p>Dispersal is a ubiquitous ecological process that has been extensively studied in many plants and animals. Anadromous salmonids are an interesting system for examining dispersal, in part because of their well-known philopatric behaviour, but also because of the conservation challenges related to the dispersal of hatchery-origin fish. Building on earlier work, we provide an updated systematic review of dispersal and gene flow in anadromous salmonids. In particular, we compared studies on the dispersal of anadromous salmonids from wild and hatchery origins, including studies providing estimates of dispersal rates, observations of dispersal and results from modelling studies. We reviewed 228 studies and found these were unevenly distributed among species, with Atlantic salmon, Chinook salmon and sea trout being well-represented. Our results showcase considerable variability in estimated dispersal rates within and across studies, which is likely related to the different methodologies, dispersal propensities across species and populations, and spatial extents considered. Overall, our results confirmed a higher tendency of hatchery fish to disperse relative to wild fish, but we also found some variation across species that warrants further study. Moreover, we found that dispersal propensity tended to decline exponentially with distance and that the drivers of dispersal varied considerably among studies. Additionally, we highlight various facets of dispersal captured across this suite of studies, including variation in terminology, methods and metrics for characterising dispersal, and the spatio-temporal scales considered. Finally, our review revealed that few studies considered, and even fewer assessed, the implications of dispersal for the conservation and management of anadromous salmonids.</p>","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"33 4","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-08-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142555315","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}

{"title":"Influence of hydrological variability and life history strategy on riverine fish assemblages in the Australian wet-dry tropics","authors":"Alison J. King,&nbsp;Julian D. Olden,&nbsp;Osmar J. Luiz,&nbsp;Mark J. Kennard,&nbsp;Brendan Adair,&nbsp;David A. Crook,&nbsp;Michael M. Douglas,&nbsp;Thor M. Saunders,&nbsp;Dion Wedd","doi":"10.1111/eff.12809","DOIUrl":"https://doi.org/10.1111/eff.12809","url":null,"abstract":"<p>Riverine fish assemblages are strongly influenced by attributes of the flow regime. Tropical savannah river systems have distinct and predictable hydrologic seasonality, reflecting the wet-dry climate, but can vary substantially in terms of dry season flow permanency and wet season flow-pulse characteristics. Understanding how flow permanence and variability influence fish assemblages, and whether these factors can be used to predict responses to future hydrological change, are key knowledge gaps that impede effective management. We examined the influence of hydrological variability on the structure and diversity of freshwater fish assemblages across rivers of the wet-dry tropics of northern Australia. We found distinct fish assemblages that varied predictably across three hydrological river types: Intermittent, Perennial Stable and Perennial Flashy flow regimes. This distinction emerged despite a common species pool across the region. Species richness was greatest in rivers with Perennial Stable flow regimes, whereas beta-diversity was greatest in Intermittent rivers. However, life history strategies of constituent species were generally poor predictors of species abundances within each hydrological river type. The distinct fish assemblages evident among hydrological classes may provide some cautious ability to both predict potential fish assemblage changes with future hydrological changes (e.g. if perennial streams became more flashy or intermittent), and to predict fish assemblages expected in unsampled rivers with particular hydrological characteristics. Our findings provide further support for the importance of maintaining regional flow-habitat heterogeneity and the connectivity between hydrological river types, and their essential role for conserving tropical fish species diversity into an uncertain hydrological future.</p>","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"34 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/eff.12809","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143114430","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}

{"title":"Swimming capacity and behaviour of juvenile round goby (Neogobius melanostomus)","authors":"Eddie Chow,&nbsp;Sina Zarini,&nbsp;Olivia Coffield,&nbsp;Quinn Chippindale,&nbsp;Sigal Balshine","doi":"10.1111/eff.12810","DOIUrl":"https://doi.org/10.1111/eff.12810","url":null,"abstract":"<p>The round goby (<i>Neogobius melanostomus</i>) is an example of an invasive species where the adults are unimpressive swimmers and yet via human activities, they have managed to rapidly invade the Laurentian Great Lakes, the Baltic Sea and many rivers in Western Europe. The secondary spread from human-impacted sites has been attributed to adult life stages, despite their poor swimming capacity. However, the swimming capacity of early life stages of round goby has not been considered before. We therefore quantified critical swimming performance (U_crit), sprint swimming performance (U_sprint), burst swimming speeds and swimming behaviours in early juvenile round goby that ranged between 10 and 25 mm in body length. The average U_crit, U_sprint and burst speeds of these fish were an impressive 0.22, 0.34 and 0.67 m/s respectively, with the capacity of these early juveniles ranging between 41 and 79% of what has been documented for adults. Notably, fish spent more time actively swimming as current speed increased, while station holding decreased. Taken together, our findings highlight that despite their small size, early juvenile round goby are not simply passively moved by currents but have movement capacities that approach that of the much larger adults. Our study emphasizes the need to consider the swimming capacity of <i>all</i> life stages as this information will better predict dispersal and range expansion and will help to design mitigation efforts to potentially prevent the spread of this and other invasive species.</p>","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"34 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-07-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/eff.12810","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143120656","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}

{"title":"Ichthyoplankton dynamics in the Brazilian Pantanal: Contribution of an important tributary and maintenance of connectivity","authors":"Mateus Babichi Veiga de Souza,&nbsp;Karina Keyla Tondato-Carvalho,&nbsp;Andréa Bialetzki","doi":"10.1111/eff.12808","DOIUrl":"10.1111/eff.12808","url":null,"abstract":"<p>In order to investigate the reproductive dynamics of the ichthyofauna in the Brazilian Pantanal, this study examines the spatial and temporal distribution of ichthyoplankton, taxonomic composition, and its correlation with environmental factors within one of the most important sub-basins, the Taquari River. Egg and larvae collections were conducted at 11 sampling points between October and March of 2017/2018 and 2018/2019. Significant differences were observed between collection points, months, and years, with higher ichthyoplankton densities in the Coxim and Taquari rivers, particularly between November and January. Twenty-eight genera and/or species of fish were identified, including 10 long-distance migratory species. Egg density showed a negative correlation with water temperature and rainfall. For larvae, water transparency and rainfall were both significant, negatively influencing larval abundance. However, different species tend to occur in environments with distinct abiotic qualities. Yolk-sac, preflexion, and flexion larval development stages were distributed throughout the sub-basin, especially near the Pantanal. Considering the data and analyses presented in this study, the importance of connectivity between these environments, specifically between the plateau and Pantanal, is evident, highlighting the significance of the entire sub-basin for fish reproductive processes. Therefore, research focusing on the ecological processes influencing the distribution of ichthyoplankton offers valuable insights for ecosystem conservation and aids in effective environmental management.</p>","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"34 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141808546","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}

{"title":"Climate-driven straying dynamics in anadromous salmon and steelhead: Research agenda for conservation","authors":"Seth M. White,&nbsp;Andrew H. Dittman,&nbsp;Marc A. Johnson,&nbsp;Thomas P. Quinn","doi":"10.1111/eff.12797","DOIUrl":"10.1111/eff.12797","url":null,"abstract":"&lt;p&gt;Anadromous salmonids of the genera &lt;i&gt;Oncorhynchus&lt;/i&gt;, &lt;i&gt;Salmo&lt;/i&gt; and &lt;i&gt;Salvelinus&lt;/i&gt; (hereafter, ‘salmon’), are culturally, economically and ecologically important fishes, affected by climate change at every life stage. Predictions about their future distribution and abundance are typically based on thresholds of thermal tolerance and changes to phenology in response to warming rivers, shifting flow regimes and complex marine processes (Crozier &amp; Siegel, &lt;span&gt;2023&lt;/span&gt;). Numerous conservation efforts focus on mitigating climate change, mainly in spawning and rearing habitats via restoration efforts to increase population resilience and capacity. While habitat alterations may dominate the narrative for salmon in a climate-altered future, indirect effects of climate change will likely be nuanced and in combination with other human activities. One such process involves the straying of natural- (‘wild’) and hatchery-origin salmon through climate-driven changes in olfactory imprinting and detection of olfactory signals, and trade-offs between homing and spawning habitat selection (Figure 1).&lt;/p&gt;&lt;p&gt;The great majority of surviving salmon return from the ocean to natal spawning grounds, guided by olfaction and other sensory inputs. Homing isolates spawning populations, favouring local adaptation (Dittman &amp; Quinn, &lt;span&gt;1996&lt;/span&gt;). Straying (spawning in non-natal sites) is also a natural phenomenon that may reflect a failure to locate the home river or a rejection of the natal site. While the terms homing and straying suggest binary alternatives, there are nuances. For example, straying can include fish spawning in a non-natal river, fish entering their natal river but spawning in a non-natal tributary, or hatchery-origin fish returning to their natal river and spawning there rather than entering their hatchery (Pollock et al., &lt;span&gt;2020&lt;/span&gt;). Whether a fish is considered to have strayed depends on the spatial scale of observation, with lower stray rates observed at larger geographic areas (e.g., basin) and higher stray rates at smaller areas of study (e.g., tributaries); this discrepancy is more pronounced in hatchery salmon that stray at higher rates at local scales (Pearsons &amp; O'Connor, &lt;span&gt;2024&lt;/span&gt;). Stray hatchery-origin salmon are especially problematic for fisheries managers attempting to limit genetic and ecological impacts on wild salmon (Keefer &amp; Caudill, &lt;span&gt;2014&lt;/span&gt;).&lt;/p&gt;&lt;p&gt;Homing to natal rivers necessitates fish imprinting upon stream-specific chemical signals at one or more early life stages, retaining the memory without reinforcement while they feed in distant waters, and initiating upstream migration when they detect these signals in rivers as maturing adults. The sequential imprinting hypothesis (Keefer &amp; Caudill, &lt;span&gt;2014&lt;/span&gt;) posits that juvenile salmon learn a series of olfactory waypoints, beginning at the natal site as they migrate towards the sea, and then use these waypoints to ","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"33 4","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/eff.12797","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141646618","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}

{"title":"Identifying personality traits and behavioural syndromes in a threatened freshwater fish (Nannoperca vittata) through comparative analysis with a model species (Poecilia reticulata): Implications for conservation","authors":"Nuwandi U. K. Pathirana,&nbsp;Adrian Gleiss,&nbsp;Stephen J. Beatty,&nbsp;Alan J. Lymbery","doi":"10.1111/eff.12807","DOIUrl":"10.1111/eff.12807","url":null,"abstract":"<p>Animal personalities are differences in behaviour among individuals of the same species that are consistent over time and contexts. The integration of animal personality into conservation actions is hampered by limited understanding of personality traits in non-model organisms. We estimated repeatabilities and correlations between behaviours in <i>Nannoperca vittata</i> (western pygmy perch), a threatened freshwater fish species endemic to south-western Australia, and, for comparative purposes, in <i>Poecilia reticulata</i> (guppy), a species frequently used in personality research. Each fish was measured four times for each of seven behavioural variables, presumed to reflect five underlying personality traits. Track length (TL) was used as a measure of activity; time spent in a risky zone (RZ) and time to emergence (ET) for boldness; latency to approach a novel object (LA) and time spent close to the object (TS) for exploration; time spent close to a mirror (CV) for sociability and number of attacks at the mirror (AT) for aggression. Four behavioural variables (TL, RZ, ET and CV) were significantly repeatable in <i>N. vittata</i> and also in <i>P. reticulata.</i> There was a lack of concordance in phenotypic and among-individual correlations between variables in both species, emphasising the importance of partitioning trait covariances to infer behavioural syndromes. Significant among-individual correlations were found between activity, boldness and sociability variables in <i>N. vittata</i>, consistent with a proactive-reactive personality axis, but not in <i>P. reticulata</i>. Personality variation should be considered in conservation actions for <i>N. vittata</i>, particularly with respect to unintended consequences of domestication selection in captive breeding and release.</p>","PeriodicalId":11422,"journal":{"name":"Ecology of Freshwater Fish","volume":"34 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/eff.12807","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141662409","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}