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Feasibility of a single‐species quota system for management of the Malaysian multispecies purse‐seine fishery Fish. Manag. Ecol. (IF 1.733) Pub Date : 2021-01-05 Ledhyane Ika Harlyan; Takashi Fritz Matsuishi; Mohammad Faisal Md Saleh
Malaysian fisheries employ multiple measures to improve management; however, not all are well‐suited to the multispecies fisheries. As part of a pilot project, an individual quota system was introduced for the purse‐seine fishery off the East Coast of Peninsular Malaysia (ECPM), but no assessment of this particular measure nor the feasibly of its implementation has been confirmed. Therefore, this study
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Quantitative estimates of freshwater fish stocking practices by recreational angling clubs in France Fish. Manag. Ecol. (IF 1.733) Pub Date : 2021-01-03 Julien Cucherousset; Rémy Lassus; Carsten Riepe; Paul Millet; Frédéric Santoul; Robert Arlinghaus; Mathieu Buoro
Although freshwater fish stocking is widely used by managers, quantitative assessments of stocking practices are lacking in many countries. The general objective of the present study was to determine the quantity and characteristics of fish stocking in metropolitan France. Using a survey‐based approach, stocking practices for 2013 by recreational angling clubs in France were quantified, which represented
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Predator and prey events at the entrance of a surface‐oriented fish collector at North Fork Dam, Oregon Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-12-01 Collin D. Smith; John M. Plumb; Noah S. Adams; Garth J. Wyatt
Quantifiable estimates of predator–prey interactions and relationships in aquatic habitats are difficult to obtain and rare, especially when individuals cannot be readily observed. To overcome this observational impediment, imaging sonar was used to assess the cooccurrence of predator‐size fish and juvenile salmonids, Oncorhynchus spp., at the entrance to a floating surface collector (FSC) in the forebay
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Risk analysis of non‐native three‐spot cichlid, Amphilophus trimaculatus, in the River Cauvery (India) Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-11-20 Lohith Kumar; Kavita Kumari; Pranab Gogoi; Ranjan Kumar Manna; Roshith Chakkiyath Madayi; Sibina Mol Salim; Vijaykumar Muttanahalli Eregowda; Suresh Vettath Raghavan; Basanta Kumar Das
The three‐spot cichlid Amphilophus trimaculatus (Günther) is an ornamental fish known to be invasive but has not been assessed for India. The present study confirmed this non‐native species’ identity using conventional and molecular methods, as well as its occurrence in the River Cauvery, the first for this species in a lotic environment outside its native range. Gut content analysis indicated a diet
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Catchability of Atlantic salmon at high water temperatures: Implications for river closure temperature thresholds to catch and release angling Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-11-13 Travis E. Van Leeuwen; Brian Dempson; David Cote; Nicholas I. Kelly; Amanda E. Bates
Warming water temperatures, combined with increased mortality following catch and release, could have synergistic consequences if rivers remain open to catch and release at high water temperatures, and catchability of fish remains similar across water temperatures. Here archived data for Atlantic salmon, Salmo salar L., were used to (a) quantify the influence of water temperature on catchability and
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Use of long‐term (40+ year) trend data to evaluate management actions on brown trout, Salmo trutta, populations in groundwater‐fed streams Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-09-15 Douglas J. Dieterman; R. John H. Hoxmeier; Jason Roloff; David F. Staples
A 40+ year programme to monitor brown trout, Salmo trutta L. (populations at 25 groundwater‐fed stream sites in southeast Minnesota, USA, was initiated to identify population trends, evaluate management actions and test ecological theories regulating populations. Significant increases between 1970 and 2018 were found for total biomass (an average of 5% annually) and abundance of juveniles (7%), all
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Can aspects of the discharge regime associated with juvenile Atlantic salmon (Salmo salar L.) and trout (S. trutta L.) densities be identified using historical monitoring data from five UK rivers? Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-10-06 Jonathan P. Gillson; David L. Maxwell; Stephen D. Gregory; Paulette E. Posen; William D. Riley; Jessica L. Picken; Marta G.L. Assunção
Understanding salmonid discharge requirements can help inform management to conserve wild populations in a changing climate. This study developed Bayesian hierarchical mixed‐effects models relating 0+ Atlantic salmon (Salmo salar L.) and trout (Salmo trutta L.) densities to different aspects of river discharge. Associations between these densities and nine hydrological variables representing the magnitude
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Effect of restoration measures in Atlantic rivers: A 25‐year overview of sea and riverine brown trout populations in the River Bidasoa Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-10-09 Ana García‐Vega; Pedro M. Leunda; José Ardaiz; Francisco Javier Sanz‐Ronda
Effective protection of migratory fish requires long‐term conservation encompassing active restoration and management measures with follow‐up studies. The main findings of long‐term (1995–2019) monitoring of anadromous and potamodromous brown trout Salmo trutta in the River Bidasoa are presented. The main aims were evaluating trout number and median migration date changes, and assessing the effects
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Hook disgorgers remove deep hooks but kill fish: A plea for cutting the line Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-10-28 Steven J. Cooke; Andy J. Danylchuk
Recreational fishing can result in deep hooking (e.g. in the gullet) of fish that are intended to be released, leading to the development of various tools intended to assist with hook removal. So‐called “hook disgorgers” are typically marketed as being a mechanism to retrieve the hook while doing so in a way that reduces harm to the fish, despite there being many studies that demonstrate that it is
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Diets of double‐crested cormorants in the Lake Winnebago System, Wisconsin Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-11-09 Ryan P. Koenigs; Daniel J. Dembkowski; Charles D. Lovell; Daniel A. Isermann; Adam D. Nickel
Double‐crested cormorant Phalacrocorox auritus Lesson (cormorant) populations have increased throughout the Great Lakes region of North America causing concern related to the impact of cormorant predation on fish communities. A recent decline in yellow perch Perca flavescens (Mitchill) abundance within the Lake Winnebago System, Wisconsin, USA, prompted an assessment of cormorant diets to evaluate
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Quantifying current and future risks of invasiveness of non‐native aquatic species in highly urbanised estuarine ecosystems—A case study of the River Neretva Estuary (Eastern Adriatic Sea: Croatia and Bosnia–Herzegovina) Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-11-06 Branko Glamuzina; Pero Tutman; Luka Glamuzina; Zoran Vidović; Predrag Simonović; Lorenzo Vilizzi
Biological invasions are a major driver of global environmental change as invasive non‐native species can exert severe environmental impacts on invaded ecosystems. Estuaries are especially vulnerable to biological invasions, which in highly urbanised areas are further facilitated by introduction pathways linked to commercial activities. This study provides a risk screening of non‐native invasive species
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Production trends and technical efficiencies of culture‐based fisheries in five tropical irrigation reservoirs: A case study from Sri Lanka Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-10-26 K. B. Chandrani Pushpalatha; Mohottala G. Kularatne; Jayantha Chandrasoma; Upali S. Amarasinghe
Culture‐based fisheries (CBF) are increasingly accepted as strategies for enhancing inland fisheries, especially in tropical Asia. In Sri Lanka, CBF development in irrigation reservoirs has gained momentum due to concerted efforts of government fisheries authorities for inland fisheries enhancement. In the present study, production trends of five irrigation reservoirs of Sri Lanka before and after
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Early settlement and growth of stocked European glass eels in a fragmented watercourse Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-10-22 Pedro M. Félix; José Lino Costa; Bernardo R. Quintella; Pedro R. Almeida; Rui Monteiro; Joana Santos; Teresa Portela; Isabel Domingos
One of the actions that has been implemented to support the recovery of the panmictic population of European eel is stocking of waterbodies where natural recruitment is low or null. However, growth conditions of the stocked eels can vary greatly. This circumstance emphasises the importance to determine ideal habitat conditions to contribute to the success of stocking actions and, consequently, to increase
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Change in fisheries access arrangements as a result of hydropower development: The case of reservoir fisheries at the Mount Coffee hydropower scheme in Liberia Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-10-17 William Sharkey; Robert I. Arthur; Roosevelt Daniels
Hydropower development can result in both environmental and social change. Modification of riparian environments and the creation of storage reservoirs can alter fish assemblages, change access arrangements and create new opportunities within and outside fishing. These opportunities may be perceived differently by different stakeholders, leading to changes in the fishery and, ultimately, with implications
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Resource‐use, body condition and parasite load metrics indicate contrasting health of stocked and native game fishes in Canadian prairie lakes Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-10-16 Lushani Nanayakkara; Elizabeth R. Starks; Ryan N. Cooper; Sydney Chow; Peter R. Leavitt; Björn Wissel
This study evaluated the status of native and stocked fish species in 13 prairie lakes in central Canada over eight years (2007–14) using three metrics: resource‐use (benthic versus pelagic carbon via stable isotopes); body condition (relative weight index Wr); and parasite load (cestode gut enumerations). Analyses included game and non‐game fishes, like naturally occurring northern pike, Esox lucius
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Estimation of glass eel (Anguilla anguilla) exploitation in the Severn Estuary, England Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-10-12 Miran Aprahamian; Peter Wood
Mark‐release‐recapture trials were conducted to determine the exploitation rate of glass eel Anguilla anguilla (L.) by handheld dip nets in the Severn Estuary in the spring of 2020. The glass eel were marked with Rhodamine B at a concentration of 0.1 g/L, 200 glass eel/L for 4.5 hr and then placed in fresh water for 36–48 hr to monitor mortality. In trial 1, 891 ± 100 of the 20,455 glass eel were recaptured
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Reservoir fish assemblage structure across an aquatic ecotone: Can river‐reservoir interfaces provide conservation and management opportunities? Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-10-06 Casey A. Pennock; Brian A. Hines; Darek S. Elverud; Travis A. Francis; Mark C. McKinstry; Benjamin J. Schleicher; Keith B. Gido
River‐reservoir interfaces have been described as aquatic ecotones and contain strong environmental gradients of depth, turbidity and trophic resource abundance. These transitional habitats have traditionally been excluded by riverine and reservoir management schemes despite their prevalence in modern riverscapes. By systematically sampling shoreline habitats along a river‐reservoir interface gradient
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Fishing efficiency of competitive largemouth bass tournament anglers has increased since early 21st century Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-07-26 Thomas M. Detmer; Kyle J. Broadway; Joseph J. Parkos; Matthew J. Diana; David H. Wahl
Tournament fishing has risen in popularity over the last half a century. As such, social and financial incentives combined with technological advancements are expected to drive changes in angler's capacity to exploit tournament‐eligible fish stocks, as has been observed in commercial fisheries. The aim of this study was to quantify temporal trends in angler efficiency and their ability to exploit a
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Migration of silver eel, Anguilla anguilla, through three water pumping stations in The Netherlands Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-09-24 Olvin Alior van Keeken; Ralf van Hal; Hendrik Volken Winter; Tony Wilkes; Arie Benjamin Griffioen
European eel, Anguilla anguilla (L.), migrating to sea encounter many man‐made structures that can hamper and delay migration or induce mortality. Three pumping stations in Friesland, the Netherlands, were covered with acoustic receivers. Ninety‐three silver eels tagged with acoustic transmitters were released in the polders upstream of the stations and 89% were detected passing a pumping station.
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Identifying invasive fish species threats to RAMSAR wetland sites in the Caspian Sea region—A case study of the Anzali Wetland Complex (Iran) Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-09-22 Seyed Daryoush Moghaddas; Asghar Abdoli; Bahram H. Kiabi; Hossein Rahmani; Lorenzo Vilizzi; Gordon H. Copp
Risk screening tools play a crucial role in identifying potential high‐risk non‐native (NN) fish species. In this study, potentially invasive NN fish species in the Anzali Wetland Complex (AWC), which is located on the south coast of the Caspian Sea (Iran), were identified using the Aquatic Species Invasiveness Screening Kit (AS‐ISK). Twenty‐nine freshwater fish species were screened of which 13 exist
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Using fisheries‐independent survey data to reinforce China’s data‐limited fisheries management: Management strategy evaluation of survey‐based management procedures Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-09-18 Ming Sun; Yunzhou Li; Yiping Ren; Yong Chen
Fisheries‐independent survey data are vital to stock assessment and management because they provide reliable information on stock status. Although survey data have been increasingly recognised for their contributions to fisheries management, they have often not been adequately used to provide quantitative management recommendations for China's fisheries that are subject to limited data. In the present
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Improving the age reading of East Greenland Atlantic cod (Gadus morhua) by determining otolith growth zone timing and annuli widths Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-09-02 Mette Svantemann Lyngby; Frank Rigét; Anja Retzel; Rasmus Hedeholm; Peter Grønkjær
Accurate and consistent age readings are cornerstones of age‐based assessment and management of exploited fish stocks. Otoliths are the preferred structure for age determination, often performed by counting the number of completed 001 zones. Uncertainty regarding the identification of the first translucent zone and the timing of translucent zone formation can cause skewed age determination even in
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Modelling daily catches of silver‐phase European eel (Anguilla anguilla) in two hydropower‐regulated rivers Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-09-02 Eamonn S. Lenihan; T. Kieran McCarthy; Colin Lawton
Estimation of silver eel production, Anguilla anguilla L., is fundamental for the management of eel stocks. In the hydropower‐regulated rivers Shannon and Erne, Ireland, production is calculated using catch data from a conservation trap and transport programme. However, in both rivers gaps in silver eel catch datasets tend to occur, which can lead to biases in production estimates. Generalised additive
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Recreational angling demand in a mixed resource fishery Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-08-21 Gianluca Grilli; Soumyadeep Mukhopadhyay; John Curtis; Stephen Hynes
Several large Irish lake fisheries target both pike Esox lucius L. and brown trout Salmo trutta L. Due to predation on trout, pike stocks are actively managed in several locations with the objective of enhancing the trout fishery, which is a policy strongly supported by some trout anglers but intensely opposed by pike anglers. There is a dearth of economic knowledge to support management decisions
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Assessing the viability of small aerial drones to quantify recreational fishers Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-08-11 Euan J. Provost; Paul A. Butcher; Melinda A. Coleman; Brendan P. Kelaher
Understanding fishing participation assists sustainable fisheries management. Relative to commercial fisheries, however, accurate quantitative data on recreational fishing is often more challenging to collect. The quality and robustness of recreational fishing surveys to assess fisher numbers may be improved with cost‐effective remote sensing platforms, such as aerial drones. Here, the precision and
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Understanding the effects of recreational catch‐and‐release angling on an increasingly important foreign fishing tourism species, the giant African threadfin Polydactylus quadrifilis (Cuvier) Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-07-26 Edward Claude Butler; Amber‐Robyn Childs; Murray Ian Duncan; Warren Mason Potts
Foreign fishing tourism (FFT) is becoming increasingly popular in the developing world, where it often coexists alongside other important sectors involving domestic recreational anglers and dependant artisanal and subsistence fishing communities. Therefore, it is important that FFT operations use effective catch‐and‐release (C&R) angling to minimise negative impacts to locally important fishery species
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Evaluating the relationship between yearling walleye, Sander vitreus, electrofishing catch‐per‐unit‐effort and density in northern Wisconsin lakes Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-07-13 Stephanie L. Shaw; Gregory G. Sass
Recruitment declines of walleye, Sander vitreus (Mitchill), observed in some northern Wisconsin lakes have resulted in management actions to evaluate and rehabilitate populations. An effective index for estimating relative abundance of yearling walleye is required. The objectives herein were : (a) to evaluate the relationship between yearling walleye electrofishing CPUE and density in northern Wisconsin
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Trophic dynamics of a reservoir fishery following an introduction of a top predator: Insights from stable carbon and nitrogen isotopes Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-07-02 James J. Wamboldt; Alan D. Wanamaker; Hannah M. Carroll; Randall D. Schultz; Joseph E. Morris
Trophic dynamics and conceptual niche spaces of top piscivores were assessed using stable isotope analysis following the introduction of hybrid striped bass Morone saxatilis (Walbaum) × Morone chrysops (Rafinesque) into an established reservoir fishery devoid of gizzard shad, Dorosoma cepedianum (Lasueur). Hybrid striped bass were initially stocked into Three Mile Lake, Iowa as an attempt to biologically
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Atlantic salmon smolts in the Irish Sea: First evidence of a northerly migration trajectory Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-06-09 James Barry; Richard J. Kennedy; Robert Rosell; William K. Roche
Results from an acoustic telemetry study revealed for the first time a northerly migration route for Atlantic salmon (Salmo salar L.) smolts leaving the east coast of Ireland. Atlantic salmon smolts were tagged in spring 2019 in the Castletown and Boyne rivers. Three tagged smolts registered on disparate deep‐water offshore marine receivers as they travelled northwards out of the Irish Sea through
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Informed water management alternatives for an over‐allocated river: Incorporating salmon life stage effects into a decision tree process during drought Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-06-02 Kirsten Sellheim; Steven Zeug; Joseph Merz
Water competition in overallocated rivers is often extreme, and climate change exacerbates the challenge of balancing ecosystem and societal water needs. During a severe California drought in 2013–2014, storage in a strategic reservoir dropped to critically low levels, necessitating reduced downstream discharge during Chinook salmon, Oncorhynchus tshawytscha (Walbaum), incubation and rearing. In response
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Effect of baiting gillnets in the Canadian Greenland halibut fishery Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-05-29 Shannon M. Bayse; Scott M. Grant
Catch rates were compared between gillnets with and without bait in the Greenland halibut Reinhardtius hippoglossoides (Walbaum) fishery off Baffin Island, Canada. Two different types of baiting techniques were compared: bait bags where squid were placed into 2‐mm mesh bags, and tied bait where squid were tied into meshes. Both types of baited gillnets significantly increased the capture of the target
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Prevalence of stocked whitefish in River Kemijoki, Finland, inferred by micro X‐ray fluorescence analysis of otoliths Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-05-15 Viktor Finnäs; Jan‐Olof Lill; Yvette Heimbrand; Martina Blass; Timo Saarinen; Yann Lahaye; Erkki Jokikokko; Henry Hägerstrand
Micro X‐ray fluorescence (µ‐XRF) analysis of otoliths was evaluated as a method to estimate the proportion of stocked one‐summer‐old whitefish Coregonus lavaretus L. in catches of adult fish (n = 20) ascending the River Kemijoki to spawn. Laser ablation inductively coupled plasma mass spectrometry (LA‐ICP‐MS) analysis was applied as control. Polished otoliths were scanned with µ‐XRF to obtain strontium
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Evaluation and impact assessment of culture‐based fisheries to enhance fish yield in small reservoirs in Odisha State, India Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-05-15 Uttam K. Sarkar; Lianthuamluaia Lianthuamluaia; Debabrata Panda; Suman Kumari; Pranaya K. Parida; Gunjan Karnatak; Puthiyottil Mishal
The present study investigates the success of stocking fingerlings of Indian major carps ‐Gibelion catla (Hamilton), Labeo rohita Hamilton and Cirrhinus mrigala Hamilton – to enhance fish yield in 58 small reservoirs in Odisha State, India. Fish stocking and yield data were collected from State Fisheries Department, Odisha. The relationships between area, stocking density and fish yield of different
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Spatial and temporal segregation of yellow perch in southern Lake Michigan Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-04-19 Jason C. Doll, Justin Walters, David Starzynski, Caleb Bollman, Kip Rounds, Jesse C. Becker, Thomas E. Lauer
Historically, yellow perch, Perca flavescens Mitchill held great recreational and commercial importance to the Lake Michigan fishery. Unfortunately, fluctuations in lake‐wide abundances in the past four decades created inconsistencies in catch. As adults, yellow perch have been commonly observed to swim great distances suggesting there is likely to be partitioning of the population within the lake
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Influence of water quality, local knowledge and river–floodplain connectivity on commercial wild crayfish harvesting in the Atchafalaya River Basin Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-04-12 Ivan A. Vargas‐Lopez, William E. Kelso, Christopher P. Bonvillain, Richard F. Keim, Michael D. Kaller
Water quality and river connectivity influence fisheries, but their role is not understood in wild crayfish harvest, or how water quality and river connectivity are incorporated into crayfish harvest strategies. In Louisiana, wild harvesting practices were evaluated with field observations and interviews with individual harvesters. Field observations included trap locations, water quality, water stable
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Inter‐ and intra‐specific interactions affecting crustacean trap fisheries—Implications for management Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-04-12 Daniel J. Skerritt; R. Colin A. Bannister; Nicholas V. C. Polunin; Clare Fitzsimmons
The UK coastal trap fisheries target two key species, European lobster Homarus gammarus (L.) and brown crab Cancer pagurus L. Their stock status is assessed periodically using size‐based, yield‐per‐recruit analysis. Fishery trends are described using landings and, where available, effort data to estimate catch per unit of effort (CPUE), nominally proportional to abundance. Despite being caught together
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Behaviour and survival of wild versus stocked fingerling walleye Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-04-05 Robert E. Weber, Michael J. Weber
Walleye Sander vitreus Mitchill have been progressively raised in hatcheries to larger sizes under the paradigm that larger stocked fish have higher survival. However, extended time in hatcheries may result in domestication, with stocked individuals lacking behaviours that promote survival. The objective of this study was to evaluate behaviour and survival of wild versus stocked fingerling (>200 mm)
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Behavioural responses of eel (Anguilla anguilla) approaching a large pumping station with trash rack using an acoustic camera (DIDSON) Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-04-05 Olvin Alior van Keeken; Ralf van Hal; Hendrik Volken Winter; Ingrid Tulp; Arie Benjamin Griffioen
European eel, Anguilla anguilla L., migrating to the sea encounter many man‐made structures that can hamper and delay migration or induce mortality. Studying small‐scale behavioural movements in front of these man‐made structures could provide insight in further mitigating adverse effects. The behaviour of eel approaching a trash rack in front of a large pumping station was investigated using a dual‐frequency
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Vulnerability of marine resources to small‐scale fishing in a tropical area: The example of Sunda Strait in Indonesia Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-03-23 Yonvitner Yonvitner; Josep LIoret; Mennofatria Boer; Rahmat Kurnia; Surya Gentha Akmal; Ernik Yuliana; Diarsi Eka Yani; Sílvia Gómez; Ludivica Endang Setijorini
Although small‐scale fisheries (SSF) play an important socio‐economic role in developing nations, overfishing seems to be increasing the risk of stock vulnerability. This study aims to quantify the pressure of SSF on fish stocks in Sunda Strait (Indonesia) using several biological indicators that are important in quantifying fishing pressure. Data on these indicators were collected monthly for three
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Spatial distribution and abundance of the by‐catch coastal elasmobranch Raja undulata: Managing a fishery after moratorium Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-03-21 Ivone Figueiredo; Catarina Maia; Lucília Carvalho
The undulate ray Raja undulata Lacepède is a coastal species common along the north‐eastern Atlantic Ocean and Mediterranean Sea and is highly accessible to coastal fisheries. Between 2009 and 2015, the species was under a European Union (EU) fisheries moratorium that hampered the collection of data to assess its stock status in Portuguese waters. After that period, a small experimental EU fishing
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Stability in reproductive timing and habitat usage of Chinook salmon across six years of varying environmental conditions and abundance Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-03-21 Matthew L. Peterson, Dana J. Lee, John Montgomery, Michael Hellmair, Andrea Fuller, Doug Demko
The spatial and temporal distribution of spawning activity by autumn‐run Chinook salmon Oncorhynchus tshawytscha (Walbaum) was examined across multiple years. The study period included two years of extreme drought conditions when water temperatures in the spawning reach of the Stanislaus River were considered sub‐optimal for spawning and egg incubation. Despite varying levels of superimposition, redd
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Ecological risk assessment of species impacted by fisheries in waters off eastern Taiwan Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-03-12 Chih‐Yu Lin, Sheng‐Ping Wang, Wei‐Chuan Chiang, Shane Griffiths, Hsin‐Ming Yeh
An ecological risk assessment was undertaken using productivity‐susceptibility analysis (PSA) to determine the relative vulnerability of 52 species caught by fisheries in the waters off eastern Taiwan. Overall, eight and 20 species were classified as having high and moderate vulnerability, respectively, and the remaining 24 species were classified as having low vulnerability. The species with the highest
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Recreational anglers as citizen scientists can provide data to estimate population size of pike, Esox lucius Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-03-04 Konrad Karlsson, Elina Kari
Catch‐per‐unit‐effort is often used as an approximation of population size. However, for the management and conservation of populations, information about the number of individuals is fundamental. Pike, Esox lucius L., is a popular fish species for recreational anglers. In this study, data in the form of journal keeping by anglers were used: date; place; and photographs of the captured fish; pike were
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Aerial drone technology can assist compliance of trap fisheries Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-03-04 Euan J. Provost, Paul A. Butcher, Melinda A. Coleman, Daniel Bloom, Brendan P. Kelaher
Illegal fishing is a global issue that threatens the viability of fishing industries and biodiversity conservation. Management agencies typically use on‐ground surveillance to monitor and minimise illegal fishing practices, the efficacy of which may be enhanced by integrating emerging remote sensing technology. Affordable drones may contribute to cost‐effective detection of illegal fishing activity
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The application of recreational fishing survey data for ecological research, a case study from Western Port, Australia Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-03-03 Gregory P. Jenkins, David Ball, Rhys A. Coleman, Simon Conron
There is a world‐wide need for information on the ecology and habitat dependencies of important fish species. Recreational fishing surveys represent a potential source of data to increase our knowledge of fish distribution and habitat relationships. Here, a case study is provided on two key recreational species, King George Whiting Sillaginodes punctatus (Cuvier) and Snapper Chrysophrys auratus (Forster)
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Sustainability at a cost: An inceptive analysis of “extended” fishing ban on the livelihoods of fishers of Tamil Nadu Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-02-07 John Amali Infantina, Parasuram Priya, Vijay Kumar Deepak Samuel, Kottarathil Rajendiran Abhilash, Ramchandran Purvaja, Ramachandran Ramesh
An emphasis on sustainable marine fish production has paved the way for the enactment of Marine Fisheries Regulation Acts and subsequent regulations in India. A closed season ban on fishing has been one of the very few successful regulatory measures since its introduction in 2001 in Tamil Nadu. Since 2017, the fishing ban period has been extended from 45 to 60 days for the east coast of India, for
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State, private or cooperatives? The governance of Tawa reservoir fisheries, India Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-01-31 Amalendu Jyotishi, Gopakumar Viswanathan, Sajiv Madhavan, Parthasarathy R
Reservoir fisheries are often contentious, largely due to displacement of people in the construction phase of the dam. This becomes a point of conflict between various stakeholders reflected in the management of the fishery. Unlike other types of open fisheries, reservoir fisheries need management to maintain the resource balance. In this context, it is important to examine which types of institutions
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Checking the pulse of the major commercial fisheries of lake Victoria Kenya, for sustainable management Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-01-28 Christopher Mulanda Aura, Chrisphine S. Nyamweya, Monica Owili, Nicholas Gichuru, Rodrick Kundu, James M. Njiru, Micheni Japhet Ntiba
The present study demonstrates the declining state of the major commercial fisheries of Lake Victoria, Kenya, a situation threatening sustainability of the lake's fishery. Data in the present study were derived from resource monitoring programmes that included hydro‐acoustics (2009–2018), trawl net fishing (2011–2018), frame surveys (2000–2016) and catch assessment surveys (2000–2015). The activities
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Predictive modelling of illegal fishing in no‐take marine protected areas Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-01-27 Tom R. Davis, David Harasti
Illegal fishing is an acknowledged problem within no‐take areas (NTAs), which are frequently used as a marine conservation management tool. While gathering data on illegal fishing is difficult, it is necessary, as these data enable increased efficiency of compliance patrols, where resources are inherently limited. In particular, information about short‐term temporal variations in illegal fishing in
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Factors influencing the abundance of three common nearshore fishes in south‐west Lake Michigan Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-01-22 William L. Stacy‐Duffy, Sara M. Thomas, David H. Wahl, Sergiusz J. Czesny
Variation in the distribution and abundance of nearshore fishes is critical to understand food web processes and fishery management issues in Lake Michigan. This study characterised patterns in abundance of three common nearshore species, yellow perch Perca flavescens (Mitchell), round goby Neogobius melanostomus (Pallas) and alewife Alosa pseudoharengus (Wilson), in relation to spatio‐temporal, abiotic
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Effects of recreational fishing on zooplankton communities of drainage system reservoirs at an open‐pit mine Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-01-18 Anna Maria Goździejewska, Andrzej Robert Skrzypczak, Jacek Koszałka, Magdalena Bowszys
The use of artificial water bodies for angling is a popular practice, especially in industrial and urbanised areas where natural water bodies are lost. In this study, the zooplankton structure dynamics and water quality at three strip mine drainage system reservoirs were assessed with different types of recreational fishery exploitation: K1—intensive angling using the catch‐and‐release model, K2—lowest
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Evaluation of the removal of impassable barriers on anadromous salmon and steelhead in the Columbia River Basin Fish. Manag. Ecol. (IF 1.733) Pub Date : 2020-01-15 Christopher Clark, Philip Roni, Jenna Keeton, George Pess
Despite the popularity of barrier removal as a habitat restoration technique, there are few studies that evaluate the biological effects of restored stream crossings. An extensive post‐treatment study design was used to quantify fish populations (e.g. species, life stage, abundance) and habitat attributes (e.g. gradient, geomorphic channel units) at 32 culvert removal or replacement projects to determine
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Efficacy of fluorescent calcein mark retention and identification in endangered Colorado pikeminnow Ptychocheilus lucius Fish. Manag. Ecol. (IF 1.733) Pub Date : 2019-12-25 Eliza I. Gilbert, Scott L. Durst, Tracy A. Diver, Hannah Mello, Nick G. Bertrand, Nathan R. Franssen
Distinguishing hatchery‐reared fishes from wild conspecifics can be required to quantify the success of augmentation programmes. This study estimated the probability of identifying calcein‐marked, hatchery‐reared Colorado pikeminnow Ptychocheilus lucius Girard from external and internal structures. Both control and marked fish held in the laboratory were correctly identified 80% of the time after 300 days
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Measuring fish catch and consumption: Practical methods for small‐scale fisheries based on length as an alternative to weight‐based approaches Fish. Manag. Ecol. (IF 1.733) Pub Date : 2019-12-25 Caroline Garaway, Robert Arthur
Small‐scale fisheries are recognised as making important contributions to nutrition and economic development despite a lack of accurate quantitative information on catches and consumption. While direct measurement remains the most appropriate way of collecting such data, it is impractical at large scales. Instead, household surveys based upon informant recall of fish caught and/or consumed are frequently
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The risk of individual fish being captured multiple times in a catch and release fishery Fish. Manag. Ecol. (IF 1.733) Pub Date : 2019-12-22 Eva B. Thorstad, Ola H. Diserud, Øyvind Solem, Torgeir B. Havn, Lars Oftedal Bjørum, Torstein Kristensen, Henning Andre Urke, Martin R. Johansen, Robert J. Lennox, Peder Fiske, Ingebrigt Uglem
The proportion of angled Atlantic salmon Salmo salar L. being caught and released has increased. If individuals are repeatedly captured, this may have fish welfare consequences. Of 995 Atlantic salmon tagged during catch and release in eight Norwegian rivers, 10% were captured twice, while 3% were captured three times within the same fishing season. The probability that released salmon were captured
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Risk assessment of small‐scale reef fisheries off the Abrolhos Bank: Snappers and groupers under a multidimensional evaluation Fish. Manag. Ecol. (IF 1.733) Pub Date : 2019-12-01 Marília Previero, Maria A. Gasalla
In the Abrolhos Bank (Southwest Atlantic), multidimensional indicators were used in sustainability assessments of data‐poor reef fisheries. Potential impacts, risks and stocks vulnerabilities were evaluated based on biological, environmental, social and economic aspects by combining both adapted productivity and susceptibility analysis (PSA) and scale intensity consequence analysis (SICA). Data were
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Long‐term changes in fishery resources of an estuary in southwestern Atlantic according to local ecological knowledge Fish. Manag. Ecol. (IF 1.733) Pub Date : 2019-11-27 Vinni Santos Thykjaer, Lucas dos Santos Rodrigues, Manuel Haimovici, Luís Gustavo Cardoso
Long‐term changes in the abundance of fisheries resources from the Patos Lagoon estuary and adjacent coastal waters in southern Brazil have been observed. Despite this understanding, it is well known that the perception of pristine state of the environment is susceptible to inter‐generational changes, commonly known as shifting baseline syndrome (SBS). An useful approach in the reconstruction of pristine
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Population dynamics of roundjaw bonefish Albula glossodonta at a remote coralline Atoll inform community‐based management in an artisanal fishery Fish. Manag. Ecol. (IF 1.733) Pub Date : 2019-11-25 Alexander Filous, Robert J. Lennox, Paige Eveson, Raphael Raveino, Eric E. G. Clua, Steven J. Cooke, Andy J. Danylchuk
Fisheries management requires knowledge on the population dynamics of exploited stocks. To that end, the present study used a mark–recapture approach to characterise the population demographics of roundjaw bonefish Albula glossodonta (Forsskål) and their interaction with a data‐limited fishery on Anaa Atoll in the Tuamotu Archipelago of French Polynesia. Over the course of the study, 2,509 bonefish
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Marine mortality in the river? Atlantic salmon smolts under high predation pressure in the last kilometres of a river monitored for stock assessment Fish. Manag. Ecol. (IF 1.733) Pub Date : 2019-11-23 Hugo Flávio, Richard Kennedy, Dennis Ensing, Niels Jepsen, Kim Aarestrup
The River Bush (Northern Ireland) is an index river for the estimation of Atlantic salmon, Salmo salar L., stock size, population dynamics and marine survival rates. Marine survival estimates are based on the number of smolts counted at a trap 3.5 km upstream of the river outlet. The survival from release to coastal inshore waters for acoustic‐tagged smolts released at the Bushmills trap varied between
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Quantifying contributions to tournament catches among resident, stocked and hybrid black basses (Micropterus spp.) Fish. Manag. Ecol. (IF 1.733) Pub Date : 2019-11-19 John S. Hargrove, Mark W. Rogers, Phillip T. Kacmar
Millions of Florida bass, Micropterus floridanus Lesueur, are stocked annually into populations of largemouth bass, Micropterus salmoides Lacepède, to increase trophy fish abundance. However, little effort has related the role that resultant hybrids make to angler catches. Largemouth bass were sampled from an important recreational fishery subject to extensive Florida bass stocking to address the hypothesis
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