Kyle Shertzer, Scott Crosson, Erik Williams, Jie Cao, Rick DeVictor, Chris Dumas, Geneviève Nesslage
Red Snapper Lutjanus campechanus is an iconic species in the southeast U.S. Atlantic Ocean, sought by both commercial and recreational fleets. Five stock assessments over the past quarter century have shown Red Snapper to be experiencing overfishing. Highly restricted landings since 2010 have been insufficient to end overfishing because fishing effort is not species specific but rather applies generally to a complex of reef-associated species. Consequently, Red Snapper are discarded as bycatch when regulations prohibit their retention, and many of the discarded fish die from hook injury, barotrauma, or depredation.
{"title":"Fishery management strategies for Red Snapper in the southeastern U.S. Atlantic: A spatial population model to compare approaches","authors":"Kyle Shertzer, Scott Crosson, Erik Williams, Jie Cao, Rick DeVictor, Chris Dumas, Geneviève Nesslage","doi":"10.1002/nafm.10966","DOIUrl":"https://doi.org/10.1002/nafm.10966","url":null,"abstract":"Red Snapper <i>Lutjanus campechanus</i> is an iconic species in the southeast U.S. Atlantic Ocean, sought by both commercial and recreational fleets. Five stock assessments over the past quarter century have shown Red Snapper to be experiencing overfishing. Highly restricted landings since 2010 have been insufficient to end overfishing because fishing effort is not species specific but rather applies generally to a complex of reef-associated species. Consequently, Red Snapper are discarded as bycatch when regulations prohibit their retention, and many of the discarded fish die from hook injury, barotrauma, or depredation.","PeriodicalId":19263,"journal":{"name":"North American Journal of Fisheries Management","volume":"79 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139516930","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Theresa L. Liedtke, Julianne E. Harris, Christina J. Wang, Trent M. Sutton
CONFLICT OF INTEREST STATEMENT
The authors declare they have no conflict of interest.
利益冲突声明作者声明他们没有利益冲突。
{"title":"Bringing partners together: A symposium on native lampreys and the Pacific Lamprey Conservation Initiative","authors":"Theresa L. Liedtke, Julianne E. Harris, Christina J. Wang, Trent M. Sutton","doi":"10.1002/nafm.10970","DOIUrl":"https://doi.org/10.1002/nafm.10970","url":null,"abstract":"<h2> CONFLICT OF INTEREST STATEMENT</h2>\u0000<p>The authors declare they have no conflict of interest.</p>","PeriodicalId":19263,"journal":{"name":"North American Journal of Fisheries Management","volume":"461 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-01-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139482562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hatchery-produced salmon and steelhead Oncorhynchus mykiss mitigate for habitat loss and support valuable commercial, recreational, and tribal fisheries. However, excessive interactions between hatchery and wild fish can also cause harm to wild populations. Weirs have been implemented as a management tool to remove returning hatchery-origin Chinook Salmon O. tshawytcha adults to reduce the proportion of hatchery-origin spawners (pHOS) in spawning areas used by their wild counterparts. Using a decade of data since new weirs were implemented, our objective was to evaluate the efficacy of this management approach.
{"title":"Weirs: An effective tool to reduce hatchery–wild interactions on the spawning grounds?","authors":"Jeremy T. Wilson, Thomas W. Buehrens","doi":"10.1002/nafm.10961","DOIUrl":"https://doi.org/10.1002/nafm.10961","url":null,"abstract":"Hatchery-produced salmon and steelhead <i>Oncorhynchus mykiss</i> mitigate for habitat loss and support valuable commercial, recreational, and tribal fisheries. However, excessive interactions between hatchery and wild fish can also cause harm to wild populations. Weirs have been implemented as a management tool to remove returning hatchery-origin Chinook Salmon <i>O. tshawytcha</i> adults to reduce the proportion of hatchery-origin spawners (pHOS) in spawning areas used by their wild counterparts. Using a decade of data since new weirs were implemented, our objective was to evaluate the efficacy of this management approach.","PeriodicalId":19263,"journal":{"name":"North American Journal of Fisheries Management","volume":"25 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139498446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
William J. Lubenau, Timothy R. Johnson, Brett J. Bowersox, Timothy Copeland, Joshua L. McCormick, Michael C. Quist
The potential influence (i.e., impact rate) of catch-and-release fisheries on wild steelhead Oncorhynchus mykiss is poorly understood and is a function of the abundance of wild fish, how many fish are encountered by anglers (i.e., encounter rate), and the mortality of fish that are caught and released. In Idaho, estimates of wild steelhead encounter rates have been derived using the number of wild and hatchery steelhead passing Lower Granite Dam, the number of hatchery steelhead harvested, and the number of hatchery steelhead caught and released. The method includes assumptions that hatchery and wild steelhead have equal encounter rates and catch-and-release mortality is 5% for wild steelhead. Here, we investigated wild and hatchery steelhead encounter rates by anglers, estimated catch-and-release mortality, and concatenated both aspects to examine how existing recreational steelhead fisheries influence wild steelhead mortality.
{"title":"Encounter rates and catch-and-release mortality of steelhead in the Snake River basin","authors":"William J. Lubenau, Timothy R. Johnson, Brett J. Bowersox, Timothy Copeland, Joshua L. McCormick, Michael C. Quist","doi":"10.1002/nafm.10965","DOIUrl":"https://doi.org/10.1002/nafm.10965","url":null,"abstract":"The potential influence (i.e., impact rate) of catch-and-release fisheries on wild steelhead <i>Oncorhynchus mykiss</i> is poorly understood and is a function of the abundance of wild fish, how many fish are encountered by anglers (i.e., encounter rate), and the mortality of fish that are caught and released. In Idaho, estimates of wild steelhead encounter rates have been derived using the number of wild and hatchery steelhead passing Lower Granite Dam, the number of hatchery steelhead harvested, and the number of hatchery steelhead caught and released. The method includes assumptions that hatchery and wild steelhead have equal encounter rates and catch-and-release mortality is 5% for wild steelhead. Here, we investigated wild and hatchery steelhead encounter rates by anglers, estimated catch-and-release mortality, and concatenated both aspects to examine how existing recreational steelhead fisheries influence wild steelhead mortality.","PeriodicalId":19263,"journal":{"name":"North American Journal of Fisheries Management","volume":"58 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-01-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139498530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The Bluegill Lepomis macrochirus, which utilizes colony spawning, has been introduced globally, and in Japan it is considered one of the worst invasive species. However, a detailed examination of the factors driving male guarding behavior and brood predation in the invaded habitat is lacking. The removal of guarding males, a common management technique in Japan, is thought to be effective in controlling Bluegill. However, the colony spawning strategy may influence the effectiveness of selective male removal through brood protection from neighbor males.
{"title":"Male guarding behavior and brood predators of invasive Bluegill in a Japanese lake","authors":"Miles I. Peterson, Satoshi Kitano","doi":"10.1002/nafm.10976","DOIUrl":"https://doi.org/10.1002/nafm.10976","url":null,"abstract":"The Bluegill <i>Lepomis macrochirus</i>, which utilizes colony spawning, has been introduced globally, and in Japan it is considered one of the worst invasive species. However, a detailed examination of the factors driving male guarding behavior and brood predation in the invaded habitat is lacking. The removal of guarding males, a common management technique in Japan, is thought to be effective in controlling Bluegill. However, the colony spawning strategy may influence the effectiveness of selective male removal through brood protection from neighbor males.","PeriodicalId":19263,"journal":{"name":"North American Journal of Fisheries Management","volume":"27 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2024-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139462305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Tyler J. Robinson, Andrew W. Hafs, Shannon J. Fisher, Jeffrey S. Ueland
Advances in acoustic telemetry have assisted biologists in understanding migration patterns, space use, survival, and effects of human influences on aquatic species. Using fine-scale positioning, fisheries managers can quantify home range size fluctuations throughout the year and even identify spawning areas. Burbot population dynamics have been studied across their range, while movement dynamics have been briefly investigated. Our objective was to assess seasonal variations of Burbot space use using estimations of home-range size with an attempt to infer spawn timing. Thirty-two acoustic tagged Burbot were used to study home range size in Bad Medicine Lake, Minnesota, from April 2019 to June 2020. Female estimated home range size was significantly larger than males. Estimated home range size increased following ice formation in December and continued through March. Average home range estimates were largest in the middle of March, and smallest in April, assumed to be caused by spawning and post-spawn behaviors, respectively. Results suggest Burbot movement increased during winter months, which may cause potential increases in vulnerability during spawning. High exploitation rates are possible in situations where spawning and feeding Burbot encounter elevated angling pressure. Future research should continue to assess movement dynamics and potential site fidelity of Burbot populations by monitoring spawning grounds and if the same areas are used year after year. Results of this study improve the knowledge of areas used by Burbot in lakes, which can assist with management of Burbot in Bad Medicine Lake. Furthermore, we highlighted how Burbot movement increased during spawn timing, which could contribute to increased encounters with anglers.
{"title":"Quantifying seasonal variations in space use within the home range of Burbot","authors":"Tyler J. Robinson, Andrew W. Hafs, Shannon J. Fisher, Jeffrey S. Ueland","doi":"10.1002/nafm.10980","DOIUrl":"https://doi.org/10.1002/nafm.10980","url":null,"abstract":"Advances in acoustic telemetry have assisted biologists in understanding migration patterns, space use, survival, and effects of human influences on aquatic species. Using fine-scale positioning, fisheries managers can quantify home range size fluctuations throughout the year and even identify spawning areas. Burbot population dynamics have been studied across their range, while movement dynamics have been briefly investigated. Our objective was to assess seasonal variations of Burbot space use using estimations of home-range size with an attempt to infer spawn timing. Thirty-two acoustic tagged Burbot were used to study home range size in Bad Medicine Lake, Minnesota, from April 2019 to June 2020. Female estimated home range size was significantly larger than males. Estimated home range size increased following ice formation in December and continued through March. Average home range estimates were largest in the middle of March, and smallest in April, assumed to be caused by spawning and post-spawn behaviors, respectively. Results suggest Burbot movement increased during winter months, which may cause potential increases in vulnerability during spawning. High exploitation rates are possible in situations where spawning and feeding Burbot encounter elevated angling pressure. Future research should continue to assess movement dynamics and potential site fidelity of Burbot populations by monitoring spawning grounds and if the same areas are used year after year. Results of this study improve the knowledge of areas used by Burbot in lakes, which can assist with management of Burbot in Bad Medicine Lake. Furthermore, we highlighted how Burbot movement increased during spawn timing, which could contribute to increased encounters with anglers.","PeriodicalId":19263,"journal":{"name":"North American Journal of Fisheries Management","volume":"31 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138715043","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Kurt C. Heim, Jonah Withers, Theodore Castro-Santos
An assumption of biotelemetry is that animal performance is unaffected by the tagging process and tag burden, yet this assumption is often untested or not thoroughly explored. Our objective was to explore how transmitter implantation procedures influenced Atlantic Salmon Salmo salar smolt survival and migratory performance.
{"title":"Tagger effects in aquatic telemetry: short-term and delayed impacts of surgery in Atlantic salmon smolts","authors":"Kurt C. Heim, Jonah Withers, Theodore Castro-Santos","doi":"10.1002/nafm.10986","DOIUrl":"https://doi.org/10.1002/nafm.10986","url":null,"abstract":"An assumption of biotelemetry is that animal performance is unaffected by the tagging process and tag burden, yet this assumption is often untested or not thoroughly explored. Our objective was to explore how transmitter implantation procedures influenced Atlantic Salmon <i>Salmo salar</i> smolt survival and migratory performance.","PeriodicalId":19263,"journal":{"name":"North American Journal of Fisheries Management","volume":"151 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138715301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Peter T. Euclide, Christian Perry, Steven B. Donabauer, Angie Grier, Tomas Höök
Fish abundance and growth is regulated by a combination of bottom-up and top-down forces but many management techniques depend more heavily on the later. Here we evaluate if inter-system variation in nutrient loading and bottom-up forces play more dominant roles in control of abundance and growth of species across similar lakes than intra- and inter-specific compensatory effects. We aim to assess whether patterns of abundance and growth are consistent among fish species across.
{"title":"What's good for fish is good for fishes: Interspecific consistency of growth, condition, and abundance among glacial lakes","authors":"Peter T. Euclide, Christian Perry, Steven B. Donabauer, Angie Grier, Tomas Höök","doi":"10.1002/nafm.10978","DOIUrl":"https://doi.org/10.1002/nafm.10978","url":null,"abstract":"Fish abundance and growth is regulated by a combination of bottom-up and top-down forces but many management techniques depend more heavily on the later. Here we evaluate if inter-system variation in nutrient loading and bottom-up forces play more dominant roles in control of abundance and growth of species across similar lakes than intra- and inter-specific compensatory effects. We aim to assess whether patterns of abundance and growth are consistent among fish species across.","PeriodicalId":19263,"journal":{"name":"North American Journal of Fisheries Management","volume":"50 ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138505622","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Joseph E. Kirsch, James T. Peterson, Adam Duarte, Denise Goodman, Andrew Goodman, Sara Hugentobler, Mariah Meek, Russell W. Perry, Corey Phillis, Lori Smith, Jeffrey Stuart
Managers can modify river flow regimes using fish monitoring data to minimize impacts from water management infrastructure. For example, operation of the gate-controlled Delta Cross Channel (DCC) in California can negatively affect the endangered Sacramento River Winter-run Chinook Salmon Oncorhynchus tshawytscha. Although guidelines have been developed for DCC operations using real-time juvenile fish sampling count data, there is uncertainty about how environmental conditions influence fish occupancy and to what extent those relationships are affected by sampling and identification error.
{"title":"Imperfect detection and misidentification affect inferences from data informing water operation decisions","authors":"Joseph E. Kirsch, James T. Peterson, Adam Duarte, Denise Goodman, Andrew Goodman, Sara Hugentobler, Mariah Meek, Russell W. Perry, Corey Phillis, Lori Smith, Jeffrey Stuart","doi":"10.1002/nafm.10974","DOIUrl":"https://doi.org/10.1002/nafm.10974","url":null,"abstract":"Managers can modify river flow regimes using fish monitoring data to minimize impacts from water management infrastructure. For example, operation of the gate-controlled Delta Cross Channel (DCC) in California can negatively affect the endangered Sacramento River Winter-run Chinook Salmon <i>Oncorhynchus tshawytscha</i>. Although guidelines have been developed for DCC operations using real-time juvenile fish sampling count data, there is uncertainty about how environmental conditions influence fish occupancy and to what extent those relationships are affected by sampling and identification error.","PeriodicalId":19263,"journal":{"name":"North American Journal of Fisheries Management","volume":"53 ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138505621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Tributaries may play a vital role in maintaining populations of large river fishes, although the specific contributions of tributaries toward recruitment of river-wide populations are not often understood. Tributaries may experience fewer cumulative anthropogenic impacts relative to mainstem rivers and may offer more natural conditions supportive of native fish populations, which may provide opportunities for fish population restoration. Thus, an improved understanding of tributary-mainstem population dynamics may inform targeted conservation actions for spatially structured populations of large-river fishes. Colorado River tributaries in the Grand Canyon, Arizona, USA are a focus of imperiled Humpback Chub Gila cypha conservation, which includes translocations to enhance population redundancy and to expand the overall population. However, the fate of fish dispersed to the mainstem has not been thoroughly quantified. Using open population mark-recapture models, we quantified the relative contribution of three groups of Humpback Chub, including fish of confirmed tributary origin that were either translocated or produced in situ, and others presumed to be Colorado River mainstem origin fish, to three mainstem populations. Our specific study objectives were to 1) estimate Colorado River abundances of tributary and mainstem-origin fish over time, 2) compare relative group-specific contributions to three mainstem populations, and 3) compare group-specific survival rates of Humpback Chub in the Colorado River and in a tributary where a recent translocation has occurred. Tributaries contributed 26% and 43% of the overall abundance in two tributary inflow reach populations, and zero in a third, which we attributed to uncharacteristically low tributary survival immediately following translocation. In the mainstem, survival of tributary-origin fish was higher compared to mainstem-origin fish, suggesting an advantage of tributary residence. Our contrasting results from three different tributary inflow populations highlight the potential role for tributaries in sustaining large-river fish populations, which may have important implications for long-term maintenance of river metapopulations.
{"title":"Quantifying the contributions of tributaries to large-river fish populations through mark-recapture modeling","authors":"Brian D. Healy, Emily Omana Smith","doi":"10.1002/nafm.10971","DOIUrl":"https://doi.org/10.1002/nafm.10971","url":null,"abstract":"Tributaries may play a vital role in maintaining populations of large river fishes, although the specific contributions of tributaries toward recruitment of river-wide populations are not often understood. Tributaries may experience fewer cumulative anthropogenic impacts relative to mainstem rivers and may offer more natural conditions supportive of native fish populations, which may provide opportunities for fish population restoration. Thus, an improved understanding of tributary-mainstem population dynamics may inform targeted conservation actions for spatially structured populations of large-river fishes. Colorado River tributaries in the Grand Canyon, Arizona, USA are a focus of imperiled Humpback Chub <i>Gila cypha</i> conservation, which includes translocations to enhance population redundancy and to expand the overall population. However, the fate of fish dispersed to the mainstem has not been thoroughly quantified. Using open population mark-recapture models, we quantified the relative contribution of three groups of Humpback Chub, including fish of confirmed tributary origin that were either translocated or produced <i>in situ</i>, and others presumed to be Colorado River mainstem origin fish, to three mainstem populations. Our specific study objectives were to 1) estimate Colorado River abundances of tributary and mainstem-origin fish over time, 2) compare relative group-specific contributions to three mainstem populations, and 3) compare group-specific survival rates of Humpback Chub in the Colorado River and in a tributary where a recent translocation has occurred. Tributaries contributed 26% and 43% of the overall abundance in two tributary inflow reach populations, and zero in a third, which we attributed to uncharacteristically low tributary survival immediately following translocation. In the mainstem, survival of tributary-origin fish was higher compared to mainstem-origin fish, suggesting an advantage of tributary residence. Our contrasting results from three different tributary inflow populations highlight the potential role for tributaries in sustaining large-river fish populations, which may have important implications for long-term maintenance of river metapopulations.","PeriodicalId":19263,"journal":{"name":"North American Journal of Fisheries Management","volume":"39 ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138505628","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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