North American Journal of Fisheries Management最新文献_第6页

Proposed Standard Weight (Ws) Equation and Standard Length Categories for Goldeye 建议金眼的标准重量(w)方程式及标准长度类别

IF 1.1 4区农林科学

North American Journal of Fisheries Management Pub Date : 2023-11-23 DOI: 10.1002/nafm.10977

Brett T. Miller, Elizabeth A. Renner, Kyle R. Winders, Juju C. Wellemeyer, Hae H. Kim

引用次数: 0

An Evaluation of the Relative Size, Body Condition, and Survival of Triploid Walleye in the Wild 野生三倍体眼的相对大小、身体状况和存活率的评价

IF 1.1 4区农林科学

North American Journal of Fisheries Management Pub Date : 2023-11-21 DOI: 10.1002/nafm.10972

Collin J. Farrell, Adam G. Hansen, Mandi M. Brandt, Christopher A. Myrick, Brett M. Johnson

{"title":"An Evaluation of the Relative Size, Body Condition, and Survival of Triploid Walleye in the Wild","authors":"Collin J. Farrell, Adam G. Hansen, Mandi M. Brandt, Christopher A. Myrick, Brett M. Johnson","doi":"10.1002/nafm.10972","DOIUrl":"https://doi.org/10.1002/nafm.10972","url":null,"abstract":"Natural dispersal or unauthorized introductions of nonnative predatory sport fish can undermine native species conservation and other fisheries management objectives. The use of reproductively sterile triploid fish may provide a lower-risk stocking option (i.e., genetic and reproductive containment) for diversifying angling opportunities while possibly reducing angler motivation to illegally transplant fish. Management interest in triploid Walleye <i>Stizostedion vitreum</i> is growing, and these fish are currently stocked by several fisheries agencies. Yet, little is known about the post-stocking growth, body condition, and survival of triploid Walleye, information that is important for calibrating expectations and guiding policy regarding their use. We compared the age-specific size, body condition, and survival of subadult (i.e., ages 0–3) triploid Walleyes to normal diploid conspecifics into two eastern Colorado reservoirs. Paired stockings of triploid and diploid Walleyes occurred over 3 years. Both fry and fingerlings were stocked each year. Triploids were generally smaller in length (6.6% on average) and weight (20.6%) compared to diploids across all age-classes. Despite being smaller, triploids had similar body condition relative to diploids. On average, the survival of triploids from spring-stocking to their first fall was 6.3x lower than that of diploids, but no differences in survival were observed beyond this early life stage. This pattern was consistent across cohorts and reservoirs. This work provides a foundation for future studies designed to clarify patterns of survival from spring to first fall by accounting for size-at-stocking and natural-origin fish, and those planned to assess the post-stocking performance of triploid Walleyes independent of diploids.","PeriodicalId":19263,"journal":{"name":"North American Journal of Fisheries Management","volume":"35 ","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138505629","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}

引用次数: 0

Patterns in distribution and density of larval lampreys in the main-stem Columbia River, Washington–Oregon 华盛顿-俄勒冈州哥伦比亚河干流中七鳃鳗幼虫的分布和密度模式

IF 1.1 4区农林科学

North American Journal of Fisheries Management Pub Date : 2023-11-20 DOI: 10.1002/nafm.10940

Monica R. Blanchard, Julianne E. Harris, Joseph J. Skalicky, Gregory S. Silver, Jeffrey C. Jolley

引用次数: 0

Biotic and abiotic factors that influence Walleye recruitment in stocked lakes in Michigan 生物和非生物因素影响密歇根州放养湖泊中白眼鱼的繁殖

4区农林科学

North American Journal of Fisheries Management Pub Date : 2023-11-07 DOI: 10.1002/nafm.10946

Justin Bopp, Seth J. Herbst, Travis O. Brenden, Kevin Wehrly, Jan‐Michael Hessenauer

{"title":"Biotic and abiotic factors that influence Walleye recruitment in stocked lakes in Michigan","authors":"Justin Bopp, Seth J. Herbst, Travis O. Brenden, Kevin Wehrly, Jan‐Michael Hessenauer","doi":"10.1002/nafm.10946","DOIUrl":"https://doi.org/10.1002/nafm.10946","url":null,"abstract":"Abstract Objective In recent decades, widespread evidence of declining Walleye Sander vitreus recruitment in the Midwestern United States has raised concerns about diminishing ecological benefits and fishing opportunities, which in turn has resulted in natural resource agencies using stocking to supplement populations. Success of Walleye stocking events vary; thus, evaluating the external factors that influence recruitment success of Walleye resulting from stocking or natural production is critical for improved management. Methods We evaluated factors influencing the relative recruitment in 98 lakes stocked annually with Walleye by integrating 20 years of stocking data with fisheries assessment and abiotic data. We indexed recruitment as the relative abundance of Walleye cohorts from natural and stocked sources combined and used boosted regression tree modeling to identify variables that are associated with varying recruitment. Result Growing degree‐days at age 1, shoreline development index, mean depth, and degree‐days at age 2 were the most important variables. The boosted regression tree model explained 17% of observed variability in recruitment. A positive relationship between growing degree‐days and Walleye recruitment was observed, whereas shoreline development and lake depth had a negative relationship with recruitment. Secondarily important predictors were lake surface area, spring warming rate, Northern Pike Esox lucius abundance, and degree‐days at age 0. In general, Walleye recruitment was positively associated with these predictors, with the exceptions of spring warming rates >0.3°C/day and being exposed to >3500 degree‐days at age 0. Conclusion Our results indicate that thermal variables in addition to lake characteristics are important recruitment drivers in stocked waters and highlights the potential for resource managers to use this information to prioritize stocking efforts in temperate lakes.","PeriodicalId":19263,"journal":{"name":"North American Journal of Fisheries Management","volume":"225 20","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135475805","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}

引用次数: 0

Postrelease mortality of spring Chinook Salmon from a mark‐selective recreational fishery in the Yakima River, Washington 华盛顿州亚基马河上一处休闲渔场中春季奇努克鲑鱼放生后的死亡率

4区农林科学

North American Journal of Fisheries Management Pub Date : 2023-11-06 DOI: 10.1002/nafm.10947

Anthony L. Fritts, Gabriel M. Temple, Cade Lillquist, Dan Rawding

{"title":"Postrelease mortality of spring Chinook Salmon from a mark‐selective recreational fishery in the Yakima River, Washington","authors":"Anthony L. Fritts, Gabriel M. Temple, Cade Lillquist, Dan Rawding","doi":"10.1002/nafm.10947","DOIUrl":"https://doi.org/10.1002/nafm.10947","url":null,"abstract":"Abstract Objective Fishery managers often implement mark‐selective fishing regulations that provide harvest opportunity on abundant hatchery salmon populations while requiring release of at‐risk natural‐origin populations. However, implementing these decisions requires fisheries managers to account for postrelease mortality of any natural‐origin fish caught and released by anglers, which can be variable and is unknown for spring Chinook Salmon Oncorhynchus tshawytscha recreational fisheries in eastern Washington. Therefore, the objective of this study was to estimate and examine the factors affecting, the postrelease mortality of spring Chinook Salmon caught and released from an inland recreational mark–selective fishery in the Yakima River, Washington. Methods We conducted a 2‐year paired control and treatment radio‐telemetry study using 171 treatment fish caught and released during a recreational fishery and 194 control fish captured in a nearby fishway. Subjects were subsequently tracked throughout the summer, and postrelease mortality was estimated on September 1. Stepwise logistic regression was used to analyze potential explanatory variables recorded at the time of capture. Result The estimated postrelease mortality of these fish was 12% (95% CI = 2–23%) just prior to the onset of spawning. We also inferred using logistic regression that anatomical hook location explained most of the variation in mortality rates of angled fish. Conclusion Our estimate of postrelease mortality is similar to estimates derived in other studies for recreational freshwater Chinook Salmon fisheries as well as the current 10% rate used to manage Columbia River spring Chinook Salmon recreational fisheries.","PeriodicalId":19263,"journal":{"name":"North American Journal of Fisheries Management","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135634939","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}

引用次数: 0

Evaluation of Pacific Lamprey statoliths for age estimation across their life cycle 评估太平洋七鳃鳗在其整个生命周期的年龄估计

4区农林科学

North American Journal of Fisheries Management Pub Date : 2023-11-04 DOI: 10.1002/nafm.10920

K. N. Pelekai, J. E. Hess, L. A. Weitkamp, R. T. Lampman, J. A. Miller

{"title":"Evaluation of Pacific Lamprey statoliths for age estimation across their life cycle","authors":"K. N. Pelekai, J. E. Hess, L. A. Weitkamp, R. T. Lampman, J. A. Miller","doi":"10.1002/nafm.10920","DOIUrl":"https://doi.org/10.1002/nafm.10920","url":null,"abstract":"Abstract Objective The anadromous Pacific Lamprey Entosphenus tridentatus is an ecologically and culturally important fish that has experienced declines in abundance and distribution throughout large portions of its range. However, the lack of fundamental biological information, such as age and growth, impedes management and conservation efforts. Methods We used known‐age hatchery and wild Pacific Lamprey to evaluate the potential of statoliths (apatite concretions found within the auditory capsules) to provide estimates of individual size and age throughout ontogeny. Statolith size and growth were assessed with comparisons of morphometrics (area, perimeter, length, and width) in relation to fish length. Traditional band‐reading methods and random forest (RF) analysis were evaluated for their utility in estimating age. Result We observed a strong, positive relationship between statolith size and fish length for larvae that were hatchery reared. However, there were no positive relationships between statolith size and fish length for any of the postmetamorphic life stages, which indicates that statolith growth slows dramatically or ceases after metamorphosis. Band‐reading methods of statoliths from known‐age lamprey (1‐ and 2‐ to 9‐year‐olds) resulted in accurate age estimates for 28% of the fish, and 57% of mean age estimates fell within 1 year of the true age. While we found that the statolith was not very useful for traditional age estimation techniques, its inclusion in morphometric‐based age classifications was promising. A RF model based on body length, collection river, and statolith area accurately assigned 76% of the larval and freshwater juveniles to their known age. Additionally, an RF model using only body length and river of origin correctly classified 70% of the known‐age samples. Conclusion Multivariate approaches, including those that include lethal and nonlethal predictor variables, provide potential approaches to estimate age in larval and early juvenile Pacific Lamprey.","PeriodicalId":19263,"journal":{"name":"North American Journal of Fisheries Management","volume":"29 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135774076","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}

引用次数: 0

Transplantation of prespawn adult Sea Lampreys as an important restoration strategy 产卵前成体七鳃鳗移植是重要的恢复策略

4区农林科学

North American Journal of Fisheries Management Pub Date : 2023-10-31 DOI: 10.1002/nafm.10941

Stephen Gephard

{"title":"Transplantation of prespawn adult Sea Lampreys as an important restoration strategy","authors":"Stephen Gephard","doi":"10.1002/nafm.10941","DOIUrl":"https://doi.org/10.1002/nafm.10941","url":null,"abstract":"Abstract Objective Anadromous Sea Lamprey Petromyzon marinus , native to the Atlantic coast of the USA, has declined in numbers since European contact due to the construction of barrier dams. Simply addressing the stream barriers, either by removal or the addition of fishways, has not always resulted in the restoration of runs. An experimental approach of transplanting adult lamprey from existing runs into unoccupied upstream habitat was evaluated as a tool for re‐establishing annual spawning runs of the species. Methods Two coastal watersheds without Sea Lamprey runs but with dams with fishways close to the ocean were selected for testing. Prespawn adult Sea Lamprey captured from another river were released in suitable habitat upstream of the dam in one river but not the other. Counts of adult Sea Lamprey ascending the river via the fishways in subsequent years were made and compared between the two rivers. Data of colonizing adult Sea Lamprey in other rivers were analyzed for further comparison. Result In subsequent years, adult Sea Lamprey only immigrated into the river that received transplanted adults. When adult Sea Lampreys were finally released into the second river years later, an annual run of adult Sea Lamprey was re‐established in that stream as well. Conclusion Prespawn adult Sea Lamprey will not emigrate from the ocean into a stream with no resident larval Sea Lamprey. The release of prespawn adults into a vacant habitat resulted in spawning, which produced a resident population of larval Sea Lamprey. Such larvae produce attractant pheromones, which is necessary to attract adults. If a stream has an extant run of Sea Lamprey, removal of a migratory barrier will result in the run expanding upstream into previously vacant habitat. Transplantation of prespawn adult Sea Lamprey can be an important management tool for restoring lost runs of this important anadromous species.","PeriodicalId":19263,"journal":{"name":"North American Journal of Fisheries Management","volume":"29 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135870514","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}

引用次数: 0

Evaluating the viability of the use of T‐bar and radiotelemetry tags on prespawn Arctic Lampreys 评估产前北极七鳃鳗使用T - bar和无线电遥测标签的可行性

4区农林科学

North American Journal of Fisheries Management Pub Date : 2023-10-31 DOI: 10.1002/nafm.10939

Mary C. Spanos, Curry J. Cunningham, Katie A. Drew, Trent M. Sutton

{"title":"Evaluating the viability of the use of T‐bar and radiotelemetry tags on prespawn Arctic Lampreys","authors":"Mary C. Spanos, Curry J. Cunningham, Katie A. Drew, Trent M. Sutton","doi":"10.1002/nafm.10939","DOIUrl":"https://doi.org/10.1002/nafm.10939","url":null,"abstract":"Abstract Objective Arctic Lampreys Lethenteron camtschaticum are harvested by subsistence and commercial fisheries in the Yukon–Kuskokwim River region of Alaska; however, baseline population data are deficient. For mark–recapture and telemetry studies to be effectively implemented to assess Arctic Lamprey abundance, migratory and dispersal patterns, and spawning locations, tags must not impact fish survival, physiology, or behavior. Methods For this laboratory evaluation, we examined survival, tag retention, swim endurance at short‐term (1 day posttreatment) and long‐term (43 days [~6 weeks] posttreatment) intervals, and incision healing for T‐bar‐tagged and radio‐tagged prespawn Yukon River Arctic Lampreys ( N = 216). Six treatment groups were evaluated: control; sham surgery; external T‐bar anchor tag; and small (0.30 g; 0.1–0.4% tag burden [ratio of tag weight to fish body weight]), medium (0.57 g; 0.2–0.8% tag burden), and large (1.50 g; 0.6–1.9% tag burden) internal dummy radio transmitter tags. Result Although all lampreys survived tagging and surgical procedures through the first 4 weeks of the experiment, a higher tag burden was associated with an increased mortality hazard up to 35 weeks postsurgery. Over the 14‐week experimental period, one T‐bar tag and one small radio tag were shed by lampreys. Although treatment was not a significant predictor of swim endurance, a higher tag burden led to reductions in swim endurance at 1 day posttreatment but not at 43 days posttreatment. Healing did not differ among surgical treatment groups, but persistent inflammation was observed at incision sites and skin erosion was observed at antenna protrusion locations. Conclusion These results indicate that T‐bar anchor tags and internal radio tags are acceptable for Arctic Lamprey tagging studies if the radio tag burden is ≤1.3% for short‐term (≤14‐week) studies and ≤0.5% for long‐term (≥14‐week) studies.","PeriodicalId":19263,"journal":{"name":"North American Journal of Fisheries Management","volume":"127 34","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135813498","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}

引用次数: 0

Estimating Seasonal Geoduck (Panopea generosa) Show‐Factors from Long Term Observation 季节性象拔蚌(Panopea generosa)显示因子的长期观察

4区农林科学

North American Journal of Fisheries Management Pub Date : 2023-10-29 DOI: 10.1002/nafm.10968

Wayne Hajas, Mike Atkins

{"title":"Estimating Seasonal Geoduck (<i>Panopea generosa</i>) Show‐Factors from Long Term Observation","authors":"Wayne Hajas, Mike Atkins","doi":"10.1002/nafm.10968","DOIUrl":"https://doi.org/10.1002/nafm.10968","url":null,"abstract":"The geoduck show‐factor is the probability an individual geoduck is detectable to a diver during a stock assessment survey. This paper presents three methods to estimate geoduck show‐factor from data collected from long term show‐factor plots near Marina Island, British Columbia. Divers surveyed the plots 21 times over a 32‐month period. Two of the methods estimate show‐factors at the time of data collection while the third method treats show‐factor as a function of the time of year. All three methods generate probabilistic results.Each method of show‐factor analysis indicated a strong seasonal effect. Show‐factors were highest from March to June and lowest from October to December. The difference between the high and low show‐factors was at least a factor of two.The three methods generated estimates of show‐factor that are generally lower than the values previously used as part of stock assessment on the coast of British Columbia. As a result, there is the possibility that previous estimates of show‐factor contributed a negative bias to estimates of geoduck abundance.As an ancillary objective, this paper presents a strategy for removing outliers from the long term show‐factor data. Outliers did not change the general trends but did affect the quantitative results.","PeriodicalId":19263,"journal":{"name":"North American Journal of Fisheries Management","volume":"205 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136135232","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}

引用次数: 0

Assessing potential spawning locations of Silver Chub in Lake Erie 伊利湖银丘鱼潜在产卵地点评估

4区农林科学

North American Journal of Fisheries Management Pub Date : 2023-10-18 DOI: 10.1002/nafm.10870

Jorden R. McKenna, Anjanette Bowen, John R. Farver, James M. Long, Jeffrey G. Miner, Nathan D. Stott, Patrick M. Kočovský

{"title":"Assessing potential spawning locations of Silver Chub in Lake Erie","authors":"Jorden R. McKenna, Anjanette Bowen, John R. Farver, James M. Long, Jeffrey G. Miner, Nathan D. Stott, Patrick M. Kočovský","doi":"10.1002/nafm.10870","DOIUrl":"https://doi.org/10.1002/nafm.10870","url":null,"abstract":"Abstract Objective Silver Chub Macrhybopsis storeriana , a predominately riverine species throughout its native range, exists within Lake Erie as the only known lake population. Its population declined in the 1950s and never fully recovered. Canada has listed Silver Chub in the Great Lakes–St. Lawrence River as endangered and has initiated a recovery plan that recognized the identification of spawning areas as a critical component to inform Silver Chub's recovery potential. Methods We investigated potential spawning locations of Silver Chub using capture records, otolith microchemistry, and daily age analysis. Lapillus otolith Sr:Ca ratios from 27 age‐0 Silver Chub were used to identify potential spawning areas. Daily ages estimated from lapilli were used to calculate hatch dates, which then were compared with capture data of adults and river flows to further inform potential spawning areas. Result The Detroit River (and its nearshore area) was all but ruled out as a potential spawning location. The Maumee, Portage, and Sandusky rivers or their nearshore areas were all possible spawning locations. Projected hatch dates spanned the end of May through the end of June and occurred across a wide range of flows, although some peaks in hatch dates corresponded to flow peaks, indicating recruitment is potentially enhanced by high flows. Conclusion Silver Chub spawning period and hypothesized spawning rivers or lacustuaries overlap those of invasive Grass Carp Ctenopharyngodon idella , creating a need to jointly consider Grass Carp control efforts with conservation of Silver Chub when assessing management alternatives. Further research on spawning guild and the use of rivers themselves or nearshore areas influenced by rivers as spawning areas are required to maximize potential for conservation and recovery of Silver Chub.","PeriodicalId":19263,"journal":{"name":"North American Journal of Fisheries Management","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135824275","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}

引用次数: 1