North American Journal of Fisheries Management最新文献

{"title":"Seasonal, spatial, and water level predictors of angler catch and effort within Texas black bass reservoir fisheries","authors":"David R. Smith, J. Warren Schlechte, Randall A. Myers, Michael A. Dance, Jacob D. Norman, Mitchell T. Nisbet","doi":"10.1002/nafm.10963","DOIUrl":"https://doi.org/10.1002/nafm.10963","url":null,"abstract":"Abstract We applied generalized additive models to analyze creel data collected at 53 reservoirs between 2003 and 2021 to evaluate seasonal, spatial, and environmental predictors of angler catch rate and effort density (i.e., angler hrs/ha) within Texas black bass fisheries. Season significantly affected models with strong positive effects on catch rates during the spring and fall and strong positive effects on effort densities during the spring. Quarterly (i.e., three months) fluctuations in water level were identified as environmental drivers of catch rates and effort density during the springtime. Percent full (i.e., relative surface area to full pool) was also identified as a significant predictor with increasing effort densities and catch rates at higher levels of percent full. Our study provides a comparative baseline for future evaluations of black bass fisheries in Texas and a depiction of key factors influencing black bass angler catch rates and effort densities using a modeling approach that may be applied within a variety of fisheries research applications.","PeriodicalId":19263,"journal":{"name":"North American Journal of Fisheries Management","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135457980","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}

{"title":"Evidence for a Male Bias in Atlantic Blue Crab Pot‐Based Sampling","authors":"Jeff F. Brunson, Kimberly A. Sitta, Peter R. Kingsley‐Smith, Michael R. Kendrick","doi":"10.1002/nafm.10962","DOIUrl":"https://doi.org/10.1002/nafm.10962","url":null,"abstract":"Abstract Objective The Atlantic Blue Crab Callinectes sapidus is an ecologically‐ and economically‐important species that supports one of the highest valued commercial fisheries in coastal South Carolina, USA. Researchers at the South Carolina Department of Natural Resources conduct multiple surveys to monitor the status of the Atlantic Blue Crab using a variety of gear configurations. Demographic characterizations can often be influenced by sampling gear‐related biases. Methods We compared blue crab sex ratios between passive, pot‐based sampling and active, trawl‐based sampling across three estuaries in the fall and for year‐round sampling in a single estuary (Ashley River, SC). Result During the fall, the percent of males collected in pot‐based sampling was 20.1% higher than the percent of males collected in trawl‐based sampling. Furthermore, an overall male bias of 23.1% was observed for year‐round sampling in the Ashley River, SC; however, this bias was only significant in certain months. Conclusion Our findings suggest that while particular sampling gears may have specific advantages, such as greater suitability to effectively sample certain habitats, the resulting characterizations of population demographics can differ among gear types. Recognizing gear related biases is important for ensuring that field surveys are representative of population demographics, particularly when sex‐specific modeling approaches are used as part of stock assessments to determine population status.","PeriodicalId":19263,"journal":{"name":"North American Journal of Fisheries Management","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135458456","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}

{"title":"Lampreys in California (<i>Lampetra</i> and <i>Entosphenus</i> spp.): Mitochondrial phylogenetic analysis reveals previously unrecognized lamprey diversity","authors":"Grace Auringer, Matthew A. Campbell, Pascale A. L. Goertler, Amanda J. Finger","doi":"10.1002/nafm.10959","DOIUrl":"https://doi.org/10.1002/nafm.10959","url":null,"abstract":"Abstract Protecting biodiversity is important for preserving ecosystem functions and services, and understanding the diversity present in a system is necessary for effective conservation. Lampreys display extensive diversity in morphology and life history strategy. The extent of this diversity and the underlying genetic patterns have not yet been fully characterized. Uncertainty about species boundaries and operational taxonomic units hinders lamprey management and conservation. Limited data have been collected on California lampreys ( Lampetra spp., Entosphenus spp.), but evidence suggests widespread population decline across the west coast of North America. This study utilized DNA barcoding, phylogenetic analysis, and species delimitation analysis to identify which nominal species are present at study sites across northern and central California, determine whether current taxonomic classifications accurately and sufficiently describe lamprey diversity in California, and characterize the biogeographic distribution of genetically distinct lamprey lineages across the study area. Lamprey individuals (N=89) from 19 sites in the Sacramento‐San Joaquin River basin, San Francisco Bay, and Klamath River basin were sequenced for the mitochondrial cytochrome b ( cyt b ) gene and combined with publicly available lamprey cyt b sequences for analysis. Results showed relatively deep phylogenetic divergence between Lampetra and Entosphenus . Distinct and genetically divergent lineages were observed within Lampetra, while distinct but genetically similar lineages were observed within Entosphenus . This study revealed novel Lampetra lineages in Napa River and Alameda Creek, and results suggest that the biogeographic distribution of lamprey diversity may follow patterns observed in other native fishes. Species delimitation results indicated at least seven separate candidate species of Lampetra can be found in California, suggesting that California holds more species‐level diversity than the expected three nominal Lampetra species known to occur in the state. These results highlight the underestimated diversity of lamprey in California and the need for further assessment of taxonomic classifications and operational taxonomic unit designations of California lampreys.","PeriodicalId":19263,"journal":{"name":"North American Journal of Fisheries Management","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136343025","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}

{"title":"Evaluation of shoreline rotenone application to control Largemouth Bass recruitment in small impoundments","authors":"Tyler Steven Coleman, Robert W. Eckelbecker, Andrew K. Carlson, Dennis R. DeVries, Russell A. Wright, Benjamin A. Staton, Stephen W. Parker, Collin R. Chittam, Richard G. Lovell, Matthew J. Catalano","doi":"10.1002/nafm.10953","DOIUrl":"https://doi.org/10.1002/nafm.10953","url":null,"abstract":"Abstract Reducing Largemouth Bass Micropterus salmoides recruitment and therefore population density could benefit recreational fisheries in small impoundments by improving individual growth rates and increasing the average size and condition of Largemouth Bass. To achieve these effects, methods of Largemouth Bass recruitment control should avoid reducing the productivity of their primary prey species, Bluegill Lepomis macrochirus . We tested this hypothesis by evaluating the effects of shoreline rotenone application on Bluegill and age‐0 and age‐1 Largemouth Bass density, growth, and survival in 15 Alabama small impoundments. Following treatment, Largemouth Bass age‐0 densities declined and mean age‐1 length increased, whereas Bluegill populations were not significantly reduced. Our study indicates that shoreline rotenone application may be a valuable method for reducing Largemouth Bass recruitment and increasing Largemouth Bass age‐1 growth in small impoundments. However, further research is needed to understand the effects of treatment on non‐target fishes and better assess the effects of factors such as impoundment surface area and treatment frequency and duration on the ultimate utility of the approach.","PeriodicalId":19263,"journal":{"name":"North American Journal of Fisheries Management","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135132867","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}

{"title":"Management Brief: A controlled experimental assessment of intraperitoneal PIT tag injection on survival of blueback herring (<i>Alosa aestivalis</i>)","authors":"C. Ryan Hill, Abigale Culberson, Antóin M. O’Sullivan, Joke Adesola, R. Allen Curry, Tommi Linnansaari, Philip M. Harrison","doi":"10.1002/nafm.10960","DOIUrl":"https://doi.org/10.1002/nafm.10960","url":null,"abstract":"Abstract Passive integrated transponder (PIT) telemetry is commonly used to monitor fish movements and behavior. To reduce inferential bias in PIT telemetry studies, it is important to quantify the effects of tagging procedures on fish survival. To this end, we conducted a controlled experiment to test the hypothesis that intraperitoneal injection of 23 mm PIT tags would have no effect on the survival of adult Blueback Herring Alosa aestivalis . We compared mortality rates of tagged and untagged Blueback Herring (n = 174; size range 202‐277 cm) that were retained in experimental tanks for 14‐days and observed no difference in the probability of survival between tagged (50% survival) and untagged (42%) groups. These results suggest that intraperitoneal tag injection is a safe and effective method of PIT tagging adult Blueback Herring and supports the use of this technique in field telemetry studies.","PeriodicalId":19263,"journal":{"name":"North American Journal of Fisheries Management","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135247791","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}

{"title":"Effects of live‐imaging sonar on Blue Catfish angler success, perception, and behavior","authors":"Ben C. Neely, Jeff D. Koch, Keith B. Gido","doi":"10.1002/nafm.10958","DOIUrl":"https://doi.org/10.1002/nafm.10958","url":null,"abstract":"Abstract Objective Proliferation of consumer‐grade live‐imaging sonar (LIS) has created management challenges in recreational fisheries. Most pervasive are questions about whether LIS users catch fish more effectively than non‐users. This project was designed to elucidate effects of LIS use on catch of Blue Catfish Ictalurus furcatus from Milford Reservoir, Kansas. Additionally, we sought to identify angler perception of LIS and quantify differences in angling behavior between users and non‐users. Methods We organized a Blue Catfish angling experiment where 16 anglers used LIS and 16 anglers did not. The experiment was followed by dissemination of a survey to measure angler experience and skill, perception of LIS, and identify behavior patterns from groups that did and did not have access to the technology. A multivariate linear model was used to identify how LIS use, angling experience, and self‐assessed angling skill influenced fish catch. Comparisons of LIS perceptions and angling behavior were also evaluated between treatment groups. Result There was no difference in Blue Catfish mass captured per five‐hour angling trial by anglers using LIS (mean = 14.57 kg, SE = 3.38) and anglers not using LIS (mean = 16.97 kg, SE = 2.29). However, self‐rating of angling skill was identified as a predictor in a supported model but little variation in catch was explained ( R 2 = 0.169). Anglers using LIS thought their time spent searching and catch would have been similar if they did not use LIS. Anglers that did not use LIS thought they would spend more time searching for fish and catch may have increased if using LIS. Time spent searching for angling locations was greater for anglers using LIS than those not using LIS. Conclusion Results from this study suggest use of LIS may influence Blue Catfish angler perception and behavior more than catch.","PeriodicalId":19263,"journal":{"name":"North American Journal of Fisheries Management","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135246395","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}

{"title":"Low‐level infection of parasitic copepods on Rainbow Trout does not affect vulnerability to angling or short‐term survival following catch‐and‐release angling","authors":"Hannah N. Swain‐Menzel, Eric J. Billman","doi":"10.1002/nafm.10957","DOIUrl":"https://doi.org/10.1002/nafm.10957","url":null,"abstract":"Abstract Parasitic copepods, or “gill lice,” can negatively impact fish hosts resulting in reduction in fitness and increased probability of mortality. The purpose of our study was to determine the effect of Salmincola californiensis on the vulnerability of Rainbow Trout to recreational angling and short‐term survival after being caught and released. We compared the prevalence and intensity of infection of S. californiensis on Rainbow Trout caught while angling and with a backpack electrofisher in May and October 2020 in Birch Creek, Idaho. In October, we also conducted a stress test (i.e. air exposure treatment) on trout caught by angling to determine the effects of parasitic copepods on short‐term survival of Rainbow Trout in a catch‐and‐release fishery. Infection with S. californiensis did not influence the vulnerability of Rainbow Trout to angling. After adjusting for sample size and size distribution, prevalence of infection in May was 48.3% for Rainbow Trout caught while electrofishing compared to 49.3% for Rainbow Trout caught while angling. In October, prevalence of infection was 41.2% for Rainbow Trout caught while electrofishing compared to 41.8% for Rainbow Trout caught while angling. We did not find a difference in short‐term survival of infected and uninfected Rainbow Trout after the stress test (4 ‐7 days after the test). We did not observe consequences of infection by parasitic copepods on vulnerability to angling or short‐term survival of Rainbow Trout in Birch Creek. However, conditions (i.e. low‐level of infection and relatively small fish) may not have been conducive to detecting differences in performance metrics; further testing at higher intensity of infection and with larger fish may uncover negative impacts of parasitic copepods on Rainbow Trout.","PeriodicalId":19263,"journal":{"name":"North American Journal of Fisheries Management","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135248056","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}

{"title":"Flow augmentation from off‐channel storage improves salmonid habitat and survival","authors":"Gabriel J. Rossi, Mariska Obedzinski, Shelley Pneh, Sarah Nossaman Pierce, William T. Boucher, Weston M. Slaughter, Keane M. Flynn, Theodore E. Grantham","doi":"10.1002/nafm.10954","DOIUrl":"https://doi.org/10.1002/nafm.10954","url":null,"abstract":"Abstract In the Western United States, juvenile salmon and steelhead are especially vulnerable to streamflow depletion in the dry season. Releasing water from off‐channel storage into small streams is a novel restoration strategy to offset impacts from anthropogenic flow alteration on salmonid fishes. To date, no studies have evaluated the ecological effects of small‐scale flow augmentations. Here, we quantify the effects of one such augmentation project on habitat connectivity, water quality, invertebrate drift, juvenile salmonid movement and survival. Our study took place in a Northern California stream and included an unusually wet summer (2019) and a more typical dry summer (2020). We found that differences in ambient streamflows between the two years mediated the physical and ecological effects of a 13.9 L/s augmentation treatment. In the dry year, habitat connectivity and dissolved oxygen markedly increased at sites &gt; 1.5 km downstream from the point of augmentation, whereas during the wet year effects on those variables were negligible. In both years, invertebrate drift marginally increased following augmentation. Inter‐pool movement of wild juvenile steelhead ( Oncorhynchus mykiss ) and stocked Coho Salmon ( O. kisutch ) increased following augmentation during the dry summer but not the wet summer. Flow augmentation increased the survival probability for salmonids, with a larger effect during the dry summer (24% higher survival for Coho Salmon and 20% higher for steelhead), than during the wet summer (when no effect was observed for steelhead survival and Coho Salmon survival increased by 11%). This study indicates that appropriately designed small‐scale flow augmentations can improve conditions for rearing salmonids in small streams, particularly during dry years. More broadly, it provides empirical evidence that efforts to restore summer streamflow in small, salmon‐bearing streams can yield significant ecological benefits.","PeriodicalId":19263,"journal":{"name":"North American Journal of Fisheries Management","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135343954","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}

{"title":"Silver Carp Herding: A Telemetry Evaluation of Efficacy and Implications for Design and Application","authors":"Josey L. Ridgway, Matthew R. Acre, Tyler M. Hessler, Dustin W. Broaddus, Jessica Morris, Robin D. Calfee","doi":"10.1002/nafm.10955","DOIUrl":"https://doi.org/10.1002/nafm.10955","url":null,"abstract":"Abstract Removal of invasive Silver Carp Hypophthalmichthys molitrix is a primary control action in North America. Strong avoidance responses to underwater sound and electricity have been shown to facilitate herding and mass removal of these fish. We conducted a telemetry study on a closed population of Silver Carp (i.e., 10 telemetered fish) to assess fine‐scale movement responses to herding stimuli. Two herding boats traveled along bank‐to‐bank transects through the study area (longitudinal progression rate = 0.37 m/s) emitting sound and electricity (“combination technique”) or no added stimuli (“control”). The combination technique was most effective in terms of increasing fish presence (2.2 x the control) in the refuge‐zones when herding had concluded and effective range (i.e., fish reaction distance; 1.6 x the control) relative to the herding boats. Fish median (~1 m/s) and maximum (~2 m/s) swimming velocity was relatively stable across fixed effects, except for the negative influence of water depth on maximum velocity. Water depth also exhibited a negative effect on fish reaction distance. Our results suggest effective range of the combination technique was conservatively 200 m (~20 dB re 1 μPa &gt; ambient level) when accounting for water depth in the study area. Herding deployments less than 1 m/s (longitudinal progression) could control fish passing and maintain fish movements towards an intended location. Information provided herein can serve to assist planning, design, and application of herding efforts used to manage, control, and remove these invasive fish.","PeriodicalId":19263,"journal":{"name":"North American Journal of Fisheries Management","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135345050","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}

{"title":"Angling Party Persistence and Visitation in a Recreational Lake Trout Fishery: Relative Influence of Travel Distance and Fuel Costs","authors":"Emily D. Cowie, Mark S. Ridgway","doi":"10.1002/nafm.10949","DOIUrl":"https://doi.org/10.1002/nafm.10949","url":null,"abstract":"Abstract Cormack‐Joly‐Seber (CJS) mark‐recapture analysis was used to estimate the effect of travel distance and fuel costs on angling party persistence (i.e., survival = probability of remaining in the Lake Trout fishery from year‐to‐year) and visitation (i.e., detection = probability of detection at the access point) over a 14‐year period (2006‐2019) for the Lake Trout recreational fishery in Lake Opeongo, Ontario, Canada. Boat identification numbers, positioned near the bow and present by law, were used as ‘tags’ in the analysis. Complete trip creel interviews at the sole access point provided information on trip characteristics. The long‐term mark‐recapture analysis of individual angling parties showed travel distance had a significant negative effect on party persistence among years and visitation within years. The distance effect was strongest for visitation, with visitation having a more negative relationship with distance than persistence. Persistence in the lake trout fishery was insensitive to fuel costs while the fuel cost covariate had a small though significant and negative effect on visitation. Time‐varying CJS models were ranked low with little model weight indicating the distance effect estimated for Lake Opeongo was a general phenomenon and did not vary by year. A mark‐recapture approach for monitoring angling parties provides unique insights into long‐term angling patterns that can aid in travel cost estimation.","PeriodicalId":19263,"journal":{"name":"North American Journal of Fisheries Management","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135060624","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}