Peacock bass mortality associated with catch-and-release sport fishing in the Negro River, Amazonas State, Brazil

Thomé-Souza, Mario J. F.; Maceina, Michael J.; Forsberg, Bruce R.; Marshall, B.; Carvalho, Álvaro L.

doi:10.1590/1809-4392201400193

Cited by 20 publications

(17 citation statements)

References 23 publications

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“…Our results partially corroborate a study of peacock bass mortality in the Negro River developed by Thomé-Souza et al (2014). These authors found mortality rates between 2.3% and 5.2% for fish subjected to collective confinement and most of the deaths occurred in the first hour after capture.…”

Section: Discussionsupporting

confidence: 91%

“…Thomé-Souza et al (2014), in a study in which fish were confined for 72 hours post-catch, found mortality rates of between 2.3% and 5.2% for the three peacock bass species caught in the Negro River. However, their experimental design did not investigate the effects of bait type or post-catch confinement procedure, mainly related with the immediate release to address the question that the fish became vulnerable after capture.…”

Section: Introductionmentioning

confidence: 97%

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Estimation of peacock bass (Cichla spp.) mortality rate during catch-release fishing employing different post-capture procedures

2017

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The effect of catch-and-release fishing on the survival of peacock bass (Cichla spp.) was evaluated by comparing two types of artificial bait (jig and shallow-diver plugs) and two types of post-catch confinement. Two experiments were conducted during the periods January-February and October-November 2012 in the Unini River, a right-bank tributary of the Negro River. In total, 191 peacock bass were captured. Both groups of fish were subjected to experimental confinement (collective and individual) for three days. Additionally, 11 fish were tagged with radio transmitters for telemetry monitoring. Mortality rate was estimated as the percentage of dead individuals for each type of bait and confinement. For peacock bass caught with jig baits, mortality was zero. The corresponding figure for shallow-diver bait was 1.66% for fish in collective containment, 18.18% for fish monitored by telemetry and 0% for individuals confined individually. Our results show low post-release mortality rates for peacock bass. Furthermore, neither the type of confinement nor the type of bait had a statistically significant influence on mortality rates. While future studies could include other factors in the analysis, our results show that catch-and-release fishing results in low mortality rates.Keywords: Cichla spp., angling, artificial baits, fish mortality, post-catch confinement.Estimativa da taxa de mortalidade do tucunaré (Cichla spp.) durante a prática do pesque-solte ResumoO efeito do pesque-solte na sobrevivência do tucunaré (Cichla spp.) foi avaliado comparando dois tipos de iscas artificiais, jig e de meia-água, e dois tipos de confinamento pós-captura. Dois experimentos foram conduzidos durante os períodos de janeiro-fevereiro e outubro-novembro de 2012, no Rio Unini, afluente da margem direita do Rio Negro. No total, 191 tucunarés foram capturados. Os peixes foram submetidos a um confinamento experimental (coletivo e individual) com duração de três dias. Além disso, 11 peixes foram marcados com radiotransmissores e liberados imediatamente após a captura, sendo monitorados por telemetria. A taxa de mortalidade foi calculada como a porcentagem de indivíduos mortos para cada tipo de isca e tratamento (confinamento individual, coletivo e sem confinamento). Não houve mortalidade para o grupo de tucunarés capturados com isca jig. A isca de meia-água mostrou uma taxa de mortalidade de 1,66% para o confinamento coletivo e 18,18% para os peixes monitorados por telemetria. Nossos resultados mostraram baixas taxas de mortalidade pós-soltura para tucunaré. Além disso, nem o tipo de confinamento, nem o tipo de isca tiveram influência significativa nas taxas de mortalidade. Ainda que estudos futuros possam incluir novos fatores na análise, os nossos resultados mostram que a prática do pesque-solte resulta em baixas taxas de mortalidade.Palavras-chave: Cichla spp., pesca, iscas artificiais, mortalidade de peixes, confinamento pós-captura.

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Section: Discussionsupporting

confidence: 91%

Section: Introductionmentioning

confidence: 97%

Estimation of peacock bass (Cichla spp.) mortality rate during catch-release fishing employing different post-capture procedures

2017

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“…In addition, the Amazon River and its tributaries support important freshwater sport fisheries such as that of the peacock bass ( Cichla spp . ; Thome‐Souza, Maceina, Forsberg, Marshall, & Carvalho, ). Overall, recreational fish provide a significant per capita contribution to food consumption in Argentina (1,000 g/person; FAO, ; Villasante et al., ).…”

Section: Recreational Fishing and Nutrition Possibly Contributing Tomentioning

confidence: 99%

The nexus of fun and nutrition: Recreational fishing is also about food

et al. 2017

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Recreational fishing is a popular activity in aquatic ecosystems around the globe using a variety of gears including rod and line and to a lesser extent handlines, spears, bow and arrow, traps and nets. Similar to the propensity to engage in voluntary catch‐and‐release, the propensity to harvest fishes strongly varies among cultures, locations, species and fisheries. There is a misconception that because recreational fishing happens during non‐work (i.e. leisure) time, the nutritional motivation is negligible; therefore, the role of recreational fishing in supporting nutrition (and thus food security) at regional, national or global scales is underappreciated. We consider the factors that influence whether fish will be harvested or released by examining the motives that underlie recreational fishing. Next, we provide an overview of the magnitude and role of recreational fishing harvest in supporting nutrition using regional case‐studies. Then, we address issues such as contaminants and parasites that constrain the ability of fish harvested by recreational fishers to be consumed. Although recreational fishing is foremost a leisure activity, the harvest of fish for personal consumption by recreational fishers has contributed and will continue to contribute to human nutrition by providing an accessible, affordable and generally highly sustainable food source, notwithstanding concerns about food safety and possibly overfishing. Attempts to better quantify the role of fish harvested by recreational fishers and the relative contribution to overall food security and personal nutrition will provide resource managers and policymakers the information needed to guide management activities and policy development.

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“…Thomé‐Souza et al . () estimated very low mortality rates for three species of Cichla, including C. temensis Humboldt (3.5%), C. orinocensis Humboldt (2.3%) and C. monoculus Agassiz (5.2%), in the basin of the Negro River, which is the largest tributary of the Amazon River.…”

Section: Characteristics Of Recreational Fisheries In Brazilmentioning

confidence: 99%

Brazilian recreational fisheries: current status, challenges and future direction

Freire

Tubino

Monteiro‐Neto

et al. 2016

Fisheries Management Eco

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Recreational fisheries in Brazil have increased in importance and attracted many foreign recreational fishers. The objectives of this article were to summarise the available data on Brazilian recreational fisheries, to discuss some of their features and to analyse how they are performing in different regions compared with international trends. A review of published and unpublished sources together with data from recreational fishing licences was used. The participation rate was low (0.9%). Overall, there was a high diversity of fish species, with the following species/group of species repeatedly reported: Menticirrhus spp., Centropomus spp., Cynoscion spp., and Micropogonias furnieri (marine/estuarine water), and Cichla spp., Hoplias malabaricus, and Piaractus mesopotamicus, together with the introduced Oreochromis niloticus and Coptodon rendalli (fresh water). The north‐eastern region differs from the other regions: fishing occurs mostly in marine waters and fishers acquire mainly shore‐based licences, have minimum fishing expenditures and rarely release fishes. There is no estimate of the total harvest or economic value. Conflicts include catch‐and‐release‐oriented freshwater and marine recreational fishers vs consumption‐oriented coastal fishers, tournament participants vs non‐participants, commercial fishers and other leisure activities, pollution, ports, species introductions and translocations, protected areas, and federal and state laws. Cases of smooth shifts from artisanal to recreational fishing were detected, possibly associated with changes in the societal relationship with natural resources.

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Peacock bass mortality associated with catch-and-release sport fishing in the Negro River, Amazonas State, Brazil

Cited by 20 publications

References 23 publications

Estimation of peacock bass (Cichla spp.) mortality rate during catch-release fishing employing different post-capture procedures

Estimation of peacock bass (Cichla spp.) mortality rate during catch-release fishing employing different post-capture procedures

The nexus of fun and nutrition: Recreational fishing is also about food

Brazilian recreational fisheries: current status, challenges and future direction

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