The Colorado River has undergone substantial anthropogenic modifications, and a suite of nonnative species have been introduced since the 1800's, consequently native fish communities are severely imperiled. We examined temporal patterns in fish community structure in Lake Mohave (i.e., lower Colorado River basin) using results from bi‐annual (spring and autumn) trammel net monitoring over 40 years from 1980 to 2020. Specifically, we examined 1) long‐term abundance and richness trends and 2) the trajectory of fish community structure in multivariate space to assess stability and turnover. Nonnative fishes were established prior to sampling, precluding the ability to determine historical fish community structure. Bonytail Gila elegans and Razorback Sucker Xyrauchen texanus were the only two remaining native fishes, and both declined precipitously in abundance through time. However, a repatriation program initiated in 1991 prevented Razorback Sucker from extirpation, while reintroduction efforts for Bonytail have failed. Both wild populations are gone. Total catch per unit effort showed a negative relationship from 1980 to 2020, whereas total species richness showed no relationship. Long‐term abundance trends at the species‐level indicated three nonnative species (i.e., Gizzard Shad Dorosoma cepedianum, Yellow Bullhead Ameiurus natalis, and Smallmouth Bass Micropterus dolomieu) increased, nine decreased, and three showed no significant relationship. Fish community composition exhibited low stability and moderate turnover, and shifted directionally through time in multivariate space, with the formation of three clusters, possibly indicating alternative states. The contemporary fish community shows little resemblance to the endemic ichthyofauna that historically occupied the Colorado River, and the Razorback Sucker is the only remaining native species due to recovery efforts. Continued adaptive management will be required to preserve the most genetically diverse Razorback Sucker population in the Colorado River system, especially while co‐existing with an unstable nonnative fish community.
{"title":"Long‐term patterns of fish community structure and decline in native species in a Colorado River reservoir, Arizona and Nevada","authors":"A. Burgad, B. Kesner, P. Marsh","doi":"10.1002/tafs.10437","DOIUrl":"https://doi.org/10.1002/tafs.10437","url":null,"abstract":"The Colorado River has undergone substantial anthropogenic modifications, and a suite of nonnative species have been introduced since the 1800's, consequently native fish communities are severely imperiled. We examined temporal patterns in fish community structure in Lake Mohave (i.e., lower Colorado River basin) using results from bi‐annual (spring and autumn) trammel net monitoring over 40 years from 1980 to 2020. Specifically, we examined 1) long‐term abundance and richness trends and 2) the trajectory of fish community structure in multivariate space to assess stability and turnover. Nonnative fishes were established prior to sampling, precluding the ability to determine historical fish community structure. Bonytail Gila elegans and Razorback Sucker Xyrauchen texanus were the only two remaining native fishes, and both declined precipitously in abundance through time. However, a repatriation program initiated in 1991 prevented Razorback Sucker from extirpation, while reintroduction efforts for Bonytail have failed. Both wild populations are gone. Total catch per unit effort showed a negative relationship from 1980 to 2020, whereas total species richness showed no relationship. Long‐term abundance trends at the species‐level indicated three nonnative species (i.e., Gizzard Shad Dorosoma cepedianum, Yellow Bullhead Ameiurus natalis, and Smallmouth Bass Micropterus dolomieu) increased, nine decreased, and three showed no significant relationship. Fish community composition exhibited low stability and moderate turnover, and shifted directionally through time in multivariate space, with the formation of three clusters, possibly indicating alternative states. The contemporary fish community shows little resemblance to the endemic ichthyofauna that historically occupied the Colorado River, and the Razorback Sucker is the only remaining native species due to recovery efforts. Continued adaptive management will be required to preserve the most genetically diverse Razorback Sucker population in the Colorado River system, especially while co‐existing with an unstable nonnative fish community.","PeriodicalId":23214,"journal":{"name":"Transactions of The American Fisheries Society","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48705452","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":"What Makes Anglers Happy: A Sentiment Analysis of Walleye Angler Forums in the United States","authors":"Kirsten Vacura, Edward Camp, P. Venturelli","doi":"10.1002/tafs.10436","DOIUrl":"https://doi.org/10.1002/tafs.10436","url":null,"abstract":"","PeriodicalId":23214,"journal":{"name":"Transactions of The American Fisheries Society","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45049336","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":"Stray Compositions of Hatchery‐Origin Chinook Salmon and Steelhead in Natural Spawning Populations of the Upper Columbia Watershed","authors":"T. Pearsons, Mark Miller","doi":"10.1002/tafs.10434","DOIUrl":"https://doi.org/10.1002/tafs.10434","url":null,"abstract":"","PeriodicalId":23214,"journal":{"name":"Transactions of The American Fisheries Society","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42497110","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":"Using state‐space models to estimate recreational angling effort and infer processes that regulate angler dynamics","authors":"Joshua L. McCormick, John W. Heckel","doi":"10.1002/tafs.10432","DOIUrl":"https://doi.org/10.1002/tafs.10432","url":null,"abstract":"","PeriodicalId":23214,"journal":{"name":"Transactions of The American Fisheries Society","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46075097","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}
Colin Laubach, D. DeVries, R. Wright, David L. Smith
{"title":"The effect of temperature and acute hypoxia/hyperoxia exposure on swimming performance and kinematics of Freshwater Drum","authors":"Colin Laubach, D. DeVries, R. Wright, David L. Smith","doi":"10.1002/tafs.10414","DOIUrl":"https://doi.org/10.1002/tafs.10414","url":null,"abstract":"","PeriodicalId":23214,"journal":{"name":"Transactions of The American Fisheries Society","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42722479","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Influence of habitat and other factors on Largemouth Bass abundance in Lake Okeechobee, Florida","authors":"C. Hanlon, A. Jordan","doi":"10.1002/tafs.10412","DOIUrl":"https://doi.org/10.1002/tafs.10412","url":null,"abstract":"","PeriodicalId":23214,"journal":{"name":"Transactions of The American Fisheries Society","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42781448","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}
Garret J. Kratina, D. DeVries, R. Wright, E. Peatman, S. Rider, Honggang Zhao
{"title":"Using fish hard‐part microchemistry and genetics to quantify population impacts of low‐use lock‐and‐dam structures on the Alabama River","authors":"Garret J. Kratina, D. DeVries, R. Wright, E. Peatman, S. Rider, Honggang Zhao","doi":"10.1002/tafs.10419","DOIUrl":"https://doi.org/10.1002/tafs.10419","url":null,"abstract":"","PeriodicalId":23214,"journal":{"name":"Transactions of The American Fisheries Society","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-06-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45354678","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}
Pub Date : 2023-06-16eCollection Date: 2023-06-01DOI: 10.2478/jvetres-2023-0019
Karol Stasiak, Wojciech Socha, Jerzy Rola
Introduction: Loss of pregnancy in mares is a major cause of economic and emotional impact for horse breeders. It can have many different infectious and noninfectious causes. The aim of this study was identification of the main viral causes of abortion in mares in Poland based on tissue samples from 180 aborted foetuses submitted for testing between 1999 and 2022.
Material and methods: Tissues of aborted foetuses collected from different horse studs throughout Poland were tested for the presence of equine herpesvirus types 1 and 4 (EHV-1/-4) and if negative, for equine arteritis virus (EAV). The examination was performed using a PCR/reverse transcriptase PCR (1999-2012) and a quantitative PCR (2013-2022).
Results: The cause of abortion was determined to be EHV-1 in 49.4% of cases (n = 89), whereas no EHV-4- or EAV-positive cases were found. The proportion of abortions due to EHV-1 differed between regions, with the highest percentage in the Lubelskie and Wielkopolskie provinces.
Conclusion: The results of the study indicate that EHV-1 is the most important viral infectious agent causing abortions in mares in Poland.
{"title":"Retrospective study on equine viral abortions in Poland between 1999 and 2022.","authors":"Karol Stasiak, Wojciech Socha, Jerzy Rola","doi":"10.2478/jvetres-2023-0019","DOIUrl":"10.2478/jvetres-2023-0019","url":null,"abstract":"<p><strong>Introduction: </strong>Loss of pregnancy in mares is a major cause of economic and emotional impact for horse breeders. It can have many different infectious and noninfectious causes. The aim of this study was identification of the main viral causes of abortion in mares in Poland based on tissue samples from 180 aborted foetuses submitted for testing between 1999 and 2022.</p><p><strong>Material and methods: </strong>Tissues of aborted foetuses collected from different horse studs throughout Poland were tested for the presence of equine herpesvirus types 1 and 4 (EHV-1/-4) and if negative, for equine arteritis virus (EAV). The examination was performed using a PCR/reverse transcriptase PCR (1999-2012) and a quantitative PCR (2013-2022).</p><p><strong>Results: </strong>The cause of abortion was determined to be EHV-1 in 49.4% of cases (<i>n</i> = 89), whereas no EHV-4- or EAV-positive cases were found. The proportion of abortions due to EHV-1 differed between regions, with the highest percentage in the Lubelskie and Wielkopolskie provinces.</p><p><strong>Conclusion: </strong>The results of the study indicate that EHV-1 is the most important viral infectious agent causing abortions in mares in Poland.</p>","PeriodicalId":23214,"journal":{"name":"Transactions of The American Fisheries Society","volume":"113 1","pages":"155-160"},"PeriodicalIF":2.7,"publicationDate":"2023-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10740322/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89354977","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}
Stephanie A. Lingard, Arthur L. Bass, K. Cook, M. Fortier, Geoffrey G. Price, S. Hinch
{"title":"Evaluating the influence of environmental and biological factors on migration behaviour and residence duration of wild sub‐yearling Chinook Salmon in a fjord estuary using micro‐acoustic transmitters","authors":"Stephanie A. Lingard, Arthur L. Bass, K. Cook, M. Fortier, Geoffrey G. Price, S. Hinch","doi":"10.1002/tafs.10429","DOIUrl":"https://doi.org/10.1002/tafs.10429","url":null,"abstract":"","PeriodicalId":23214,"journal":{"name":"Transactions of The American Fisheries Society","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41783901","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":"A bioenergetics‐based index of habitat suitability: spatial dynamics of foraging constraints and food limitation for a rare estuarine fish","authors":"W. E. Smith, M. Nobriga","doi":"10.1002/tafs.10427","DOIUrl":"https://doi.org/10.1002/tafs.10427","url":null,"abstract":"","PeriodicalId":23214,"journal":{"name":"Transactions of The American Fisheries Society","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2023-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43826189","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}
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