Journal of fish biology最新文献

{"title":"Reproductive biology of invasive grass carp (Ctenopharyngodon idella) in two North American systems.","authors":"Tammy M Wilson, Matthew R Acre, Fred Williams, Robin D Calfee, Christine M Mayer, Robert L Mapes, Chris M Kemp, Ryan T Young, Michael E Byrne","doi":"10.1111/jfb.70003","DOIUrl":"https://doi.org/10.1111/jfb.70003","url":null,"abstract":"<p><p>Grass carp (Ctenopharyngodon idella) are nonnative, herbivorous freshwater fish that represent an ecological threat in North American waters. However, data are limited on reproductive biology specific to wild populations in midwestern North America, despite recent concern for grass carp establishment within the Great Lakes. Basic information on reproductive traits could be useful to determine reproductive potential, inform future population modelling and provide information to aid control efforts. Our objectives were to evaluate grass carp age-at-maturity, spawning season timing, fecundity type, developmental timing and spawning strategy. Additionally, we evaluated the reliability of the gonadosomatic index (GSI) as a proxy for identifying mature grass carp and compared body condition across study areas. We sampled grass carp in portions of the Mississippi River watershed within the state of Missouri and within the Lake Erie basin. Based on gonad histological samples (n = 274), grass carp are batch spawners with indeterminate fecundity and asynchronous ovarian developmental timing. This allows flexibility in their spawning, exemplified by a protracted spawning season in Lake Erie (April to November) in temperatures ranging from 12.3 to 27.3°C. Minimum observed age-at-maturity for females in Missouri and for both males and females in the Lake Erie population was age-3 and age-2 for males in Missouri. Accuracy of GSI as a measure of maturity during the spawning season was 89.7% and 87.5%, for females and males, respectively. Compared to Missouri, grass carp in Lake Erie had a significantly higher body condition, and females ready to spawn had significantly higher GSI values, suggesting that the grass carp in Lake Erie are healthier and more fecund relative to Missouri and, if left uncontrolled, potentially have a high probability of establishment within the Great Lakes. The results of this study will allow managers to identify the reproductive status of grass carp in the field and more accurately estimate populations and reproductive potential.</p>","PeriodicalId":15794,"journal":{"name":"Journal of fish biology","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143492338","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":"Resource use, niche width, and trophic position reveal diverse trophic structure in a tidal freshwater zone fish community.","authors":"Emma E Bowser, Tyler D Tunney, Cindy Breau, Brian Hayden","doi":"10.1111/jfb.16057","DOIUrl":"https://doi.org/10.1111/jfb.16057","url":null,"abstract":"<p><p>The tidal freshwater zone is an aquatic transition zone that links a river to its estuary and provides an important habitat used in the life cycle of resident and migratory fishes. Yet, information on the trophic structure of fishes in this habitat is scarce. To address this gap, we characterize the trophic structure of a fish community in the tidal freshwater zone of the Northwest Miramichi River (New Brunswick, Canada). Stable isotope analyses (δ¹³C, δ¹⁵N, and δ³⁴S) of 17 fish species revealed diverse feeding strategies. Resource use varied across species; some fish relied on either marine or freshwater resources, whereas others integrated resources from both habitats. Fishes varied in their trophic position (range 3.1-4.2) which increased with reliance on marine-derived resources. Species isotopic niche widths varied widely (range 20.4 to 1015.3). Species with intermediate marine resource use (~0.50) had a mix of wide and narrow isotopic niche widths, contrary to wide niches predicted by current literature. Our findings indicate that these narrow-niched species may either act as a sort of tidal freshwater transition zone specialist or assimilate equal proportions of marine and freshwater resources on average. Trophic information from the tidal freshwater zone improves the understanding of fish communities and food web structure where freshwater rivers and marine ecosystems meet.</p>","PeriodicalId":15794,"journal":{"name":"Journal of fish biology","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143501954","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":"Large-scale movement patterns of European catfish (Silurus glanis L.) in the Scheldt River basin, Belgium.","authors":"Sam Franquet, Pieterjan Verhelst, Lieven Bervoets, Raf Baeyens, Sophie Vermeersch, Jonas Schoelynck, Tom Van den Neucker, Ine Pauwels","doi":"10.1111/jfb.16066","DOIUrl":"https://doi.org/10.1111/jfb.16066","url":null,"abstract":"<p><p>The large-scale movement behavior of European catfish (Silurus glanis L.) remains poorly understood, despite it being a species of interest for conservation management. We report the movement patterns of 13 native individual catfish, recorded using acoustic telemetry over 160-km estuarine habitat free of migration barriers in the Scheldt River basin (Belgium). The results show that catfish can travel vast distances of over 10 km with a seasonal pattern of fish moving the largest distances in summer. The wels catfish is often considered a relatively sedentary species; however, our results show that this is not the case in systems where they have the freedom to move over large distances. Knowledge about the large-scale movement behavior of the wels catfish can be useful for species conservation, as well as pest control. For instance, the effects of migration barriers could be (re)considered in terms of the large movement distances.</p>","PeriodicalId":15794,"journal":{"name":"Journal of fish biology","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143468104","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":"Pick on someone your own size! Arctic grayling (Thymallus arcticus), do.","authors":"William Bernard Perry","doi":"10.1111/jfb.16073","DOIUrl":"https://doi.org/10.1111/jfb.16073","url":null,"abstract":"&lt;p&gt;Conflict and conflict resolution are processes that are integral to social evolution. Processed that are almost as old as multicellular life, driving evolution and major transitions in the history of life, such as eusociality (Bourke, &lt;span&gt;2023&lt;/span&gt;). Eusociality is at the extremes, as there is seemingly no conflict between conspecifics, due to process such as conflict dissolution (González-Forero and Peña, &lt;span&gt;2021&lt;/span&gt;). Despite eusociality arising in insects (famously, bees and ants), arachnids, crustaceans and mammals, it has never been found in the most diverse vertebrate group, fish (Stiefel, &lt;span&gt;2013&lt;/span&gt;). This is likely because aquatic environments are not conducive to building nests, which are key to defending and repeated feeding of offspring, the functional precursor of eusociality (Ruxton et al., &lt;span&gt;2014&lt;/span&gt;).&lt;/p&gt;&lt;p&gt;Despite fish not displaying eusociality, they still exhibit a wide variety of intraspecific conflict and conflict resolution. Whether that be the conflict between sexes leading to dazzling male morphology in live-bearers (Poeciliidae) (Furness et al., &lt;span&gt;2019&lt;/span&gt;) or the conflict over limited resources leading to egalitarian behaviours in cooperatively breeding cichlids (Fischer et al., &lt;span&gt;2024&lt;/span&gt;). These examples come from smaller freshwater species, which can be reared in laboratory settings with relative ease, making it easier to observe behaviour and construct conflict scenarios.&lt;/p&gt;&lt;p&gt;In this issue, however, Holubová et al. (&lt;span&gt;2024&lt;/span&gt;) break free from fish that are popular in home tropical freshwater aquariums and assess conflict in the wilds of an Alaska River, focusing on the feeding aggregations of Arctic grayling (&lt;i&gt;Thymallus arcticus&lt;/i&gt;). The river in question exhibits extremely low turbidity during the summer months, allowing for excellent visibility, which was combined with cutting edge three-dimensional underwater videography.&lt;/p&gt;&lt;p&gt;What Holubová et al. (&lt;span&gt;2024&lt;/span&gt;) found from their footage is the perfect example of game theory in action, predicting the outcome of territorial conflict. Specifically, aggression between individuals in the dominance hierarchy of a grayling aggregation only occurred when conspecifics were of a similar size (±10cm), showing that challenging dominant individuals with the best positions in the river is only worth the risk when the potential reward outweighs the cost. However, winners of bouts were significantly larger than the losers, suggesting that the grayling could have imperfect size assessment of conspecifics, or that the reward of the conflict was worth the risk from smaller individuals, perhaps when prey may be scarce.&lt;/p&gt;&lt;p&gt;The results also showed a clear initiator advantage, irrespective of body length, with initiators up to 5cm shorter than receivers showing success. Initiating behaviour is, therefore, an important factor, and can be influenced by factors such as hormones (Neregård et al., &lt;span&gt;2008&lt;/span&gt;; Suter and Hunt","PeriodicalId":15794,"journal":{"name":"Journal of fish biology","volume":"106 2","pages":"113"},"PeriodicalIF":1.7,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/jfb.16073","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143455808","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":"A multiple-behaviors virtual fish model for simulating fish trajectory in vertical slot fishways.","authors":"Xiaolong Chen, Xiaotao Shi, Xingyong Deng, Majid Rasta, Junjun Tan, Yu Wang, Yongqiang Jiang, Yanqin Bai","doi":"10.1111/jfb.16064","DOIUrl":"https://doi.org/10.1111/jfb.16064","url":null,"abstract":"<p><p>Fishways are essential for restoring river connectivity and facilitating fish migration, necessitating ongoing research for efficiency optimization. This study developed a fish behavior model to optimize fishway efficiency cost-effectively. The model simulates swimming trajectories of Schizothorax wangchiachii within a vertical slot fishway incorporating upstream behavior, random behavior, obstacle avoidance, and swimming speed variations. The simulated trajectory exhibits a high consistency with 20 real trajectories, achieving a trajectory overlap rate of 86.7%. This result highlights the model's ability to accurately simulate fish movements, demonstrating its significant potential to revolutionize fishway design.</p>","PeriodicalId":15794,"journal":{"name":"Journal of fish biology","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-02-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143458191","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":"Stomach content and stable isotope analysis of invasive lionfish (Pterois volitans) in the Florida Keys.","authors":"Emily E Shallow, Cassandra N Glaspie, Michael J Polito, Mitchell S Lovell","doi":"10.1111/jfb.16067","DOIUrl":"https://doi.org/10.1111/jfb.16067","url":null,"abstract":"<p><p>The invasive red lionfish, Pterois volitans, plays a unique role in seagrass and reef ecosystems, where it functions as a top predator and competitor for both food and shelter. Given the ubiquitous distribution of lionfish in the Gulf of Mexico and Caribbean basins, their species provides an excellent opportunity to understand how an invasive predator's diet and primary energy pathways change as a function of size and habitat type. To investigate these patterns, we studied lionfish from a mosaic of deep reef, shallow patch reef, and seagrass bed habitats in the Florida Keys using stomach contents and stable isotope analysis (δ¹³C and δ¹⁵N). In August 2020, lionfish (n = 48) and other native species were collected from coastal habitats in the Florida Keys, including deep (20-30 m), intermediate (12-18 m), and shallow (<8 m) reefs, to obtain representation of the local food web. Lionfish on shallow reefs were found to feed from different basal carbon sources than lionfish on intermediate and deep reefs. Bayesian mixing models predicted reef particulate organic matter to be the greatest source contributor to the primary energy pathways of lionfish and reef fish at similar trophic levels, and a high degree of resource use overlap between lionfish and native reef fish was documented. Over time, niche overlap with native species could lead to a decline in their populations through resource competition and/or direct predation, thus creating the need to further study the impact of lionfish in the Florida Keys ecosystem. With the increasing scientific consensus that lionfish diets and niche overlap are highly location-specific, this study further contributes to our collective understanding of the role that lionfish play in the food web of patch reefs in the Florida Keys.</p>","PeriodicalId":15794,"journal":{"name":"Journal of fish biology","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143458192","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":"Understanding the swimming performance, behaviour and metabolism of the rare juvenile Kaluga sturgeon (Huso dauricus) for its conservation and management.","authors":"Guanyu Zhu, Bo Ma","doi":"10.1111/jfb.70000","DOIUrl":"https://doi.org/10.1111/jfb.70000","url":null,"abstract":"<p><p>The Kaluga sturgeon, Huso dauricus, is a rare fish species found in the Heilongjiang River basin of China, primarily within the mainstream of the Heilongjiang River. However, recent years have witnessed the degradation of its wild population due to factors such as overfishing, water pollution and water conservancy construction. To safeguard the genetic diversity of H. dauricus, it is essential to investigate its swimming capabilities, behaviour and metabolic rate during physical activity. This research yields fundamental insights and technical support for fishery enhancement, release strategies, artificial breeding and fishway design. In this study, we assessed critical swimming speed, burst swimming speed and oxygen consumption of H. dauricus. High-speed cameras recorded H. dauricus' swimming behaviour at various speeds, enabling a detailed analysis of tail beat frequency, tail beat amplitude and motion step length (LS). This study contributes crucial baseline data for not only understanding fish behaviour in the Heilongjiang basin but also being a vital technical support for fish stocking initiatives and the design of fish passage facilities in water conservancy projects. These findings hold significant implications for protecting and restoring H. dauricus germplasm resources in the region.</p>","PeriodicalId":15794,"journal":{"name":"Journal of fish biology","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143449302","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":"Novel behavioural assays reveal sex-specific behavioural syndromes in anemonefish.","authors":"Gabriel J Graham, Isabella M Wilton, Emily K Panczyk, Justin S Rhodes","doi":"10.1111/jfb.16069","DOIUrl":"https://doi.org/10.1111/jfb.16069","url":null,"abstract":"<p><p>Individual differences in behaviour and behavioural plasticity have been extensively studied in a variety of animals across the phylogenetic spectrum. Amphiprion species bring distinct insight into the topic because of their unique life history, mating system, and extraordinary degree of behavioural plasticity associated with protandrous (male-to-female) sex change. Several laboratory studies have begun characterizing individual differences in behaviour and behavioural plasticity in this species. The goals of this study were to expand the repertoire of behavioural assays available for Amphiprion ocellaris, establish repeatability of individual differences, identify sex differences, and explore whether individual differences in correlated behaviours can be detected consistently across experimental contexts (i.e., whether behavioural syndromes can be detected). We measured 35 behaviours across 7 behavioural assays in 9 reproductively active A. ocellaris pairs under 3 different reproductive contexts. Behaviours were repeatedly measured three separate times (rounds) over repeated spawning cycles. We found that 33 out of 35 behaviours were significantly individually repeatable across reproductive contexts and rounds. We found parental care, large intruder aggression, and female-oriented aggression assays produced the largest sex differences. Males performed 7-fold more egg care behaviours than females, whereas females performed significantly more aggressive behaviours toward a large heterospecific intruder (Dascyllus trimaculatus). Further, females displayed significantly more direct aggression toward a stimulus female than males. Three different behavioural syndromes were observed in males and none in females. These results expand our understanding of sex differences in behaviour and the division of labour in the iconic anemonefish. Future studies can use these assays to study the behaviour of fish in the middle of sex change or in the study of behavioural plasticity in this unique species.</p>","PeriodicalId":15794,"journal":{"name":"Journal of fish biology","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-02-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143441166","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":"Stridulation sounds of the pacamã Lophiosilurus alexandri Steindachner, 1876 (Pseudopimelodidae), a threatened endemic Brazilian catfish.","authors":"Xavier Raick, Gregório Kurchevski, Alexandre Lima Godinho","doi":"10.1111/jfb.70001","DOIUrl":"https://doi.org/10.1111/jfb.70001","url":null,"abstract":"<p><p>Pseudopimelodidae comprises 49 species of freshwater catfish endemic to South America, with limited research on their acoustic behaviour. This study focuses on the pacamã Lophiosilurus alexandri Steindachner, 1876, a vulnerable catfish species endemic to the São Francisco River basin, known for its ecological and economic importance. Sound production by this species was analysed for the first time. Three individuals were recorded while being held underwater revealing the production of two distinct sound types (type I and type II) associated with pectoral fin movements (abduction and adduction). Sounds were 85-135 ms long with a variable number of pulses or peaks. Type II sounds were longer and louder than type I sounds, with both types showing a similar peak frequency ranging between 200 and 500 Hz. The sounds were produced alternately by the pectoral fins, with occasional lateralization. More research is needed to determine whether these sounds can be used for monitoring or if they lack sufficient species-specific characteristics.</p>","PeriodicalId":15794,"journal":{"name":"Journal of fish biology","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143425528","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":"Seasonal water level fluctuations cause opposite changes in fish trophic dynamics in Amazonian black-water and white-water lakes.","authors":"H Agasild, F Cremona, A Tuvikene, A L Val, K Panksep, P Zingel","doi":"10.1111/jfb.70002","DOIUrl":"https://doi.org/10.1111/jfb.70002","url":null,"abstract":"<p><p>Amazonian floodplain lakes, distinguished by their water types, are crucial ecosystems for fish biodiversity. In these ecosystems, the annual hydrological cycle, known as the \"flood pulse,\" is the primary driving force for fish productivity, providing habitat and feeding opportunities. However, how seasonal water level changes affect fish assemblages and feeding guild responses in floodplains with varying watershed characteristics is still poorly understood. We conducted a comparative stable isotope study in both a white-water and a black-water floodplain lake to investigate fish trophic dynamics during periods of rising and low water levels. Analyses of a broad taxonomic range of fish (seven orders and 27 families, with 73 and 82 taxa in the studied lakes, respectively) revealed that the fish assemblages in the studied white-water and black-water lakes exhibited different trophic dynamics in response to changes induced by the hydrological cycle. In contrast to the white-water lake, a strong, trophic guild-related effect shaped the δ¹³C and δ¹⁵N dynamics in the black-water lake. As a result, the fish assemblage in the black-water lake experienced significant trophic shifts with generally opposite dynamics over the water levels compared to the white-water lake. In the black-water lake, water level changes caused alterations in trophic niche width in almost all analyzed guilds (carnivorous, detritivorous, herbivorous, invertivorous, omnivorous, planktivorous), while this was less consistent in the white-water lake. Our results suggest that the fish assemblage in the nutrient-poor black-water lake is more dependent on the annual flood pulse and associated resources than in the white-water lake. These findings may further imply a relatively higher vulnerability of the black-water lake to alterations in the regular flood pulse compared to the white-water lake, indicating greater stability in feeding conditions and fish trophic dynamics in the latter.</p>","PeriodicalId":15794,"journal":{"name":"Journal of fish biology","volume":" ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143399177","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}