Catch-per-unit-effort: which estimator is best?

Petrere, Miguel; Giacomini, Henrique C.; Marco, Paulo De

doi:10.1590/s1519-69842010005000010

Cited by 48 publications

(44 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Before expressing the data as CPUE, it was verified that the catch (C) and effort (f) data satisfied a linear relationship with the regression of Cxf passing through the origin (Petrere Junior et al, 2010). A log 10 conversion of catch (C) and f (fishers/day) gave a statistically significant linear regression (Clog 10 = 1.0083f log 10 + 1.763; r 2 = 0.6392; p < 0.0001) with an intercept not significantly different from zero (p = 0.5382).…”

Section: Catch Per Unit Effort (Cpue)mentioning

confidence: 98%

See 1 more Smart Citation

Artisanal fisheries in a Brazilian hypereutrophic reservoir: Barra Bonita reservoir, middle Tietê river

Novaes

Carvalho

2011

Braz. J. Biol.

View full text Add to dashboard Cite

This study examines the qualitative and quantitative aspects of fishery landings at the hypereutrophic Barra Bonita reservoir, Brazil. Data were collected each month (July/2004-June/2006 at three localities and the reported catch, fishing effort and fishing techniques were recorded from 745 landings, comprising a total fish catch of 86,691.9 kg. The most caught species were exotic tilapias, especially the Nile tilapia (Oreochromis niloticus L.), which represented 82.5% of the total biomass. The reservoir's fishery productivity was 11.1 kg/ha . Five fishing techniques were identified: cast net, gill net, trawl net, beating gill net, and beating gill net + gill net. The analysis of DCA related the active strategies for the tilapia catch, to the passive strategies for the Pimelodus maculatus (Lacepède) and Triportheus angulatus catches (Spix & Agassiz), and the mixed strategies for the tilapia, catfish and Prochilodus lineatus (Valenciennes) catches. ANCOVA results were significant for all the variables analysed (season, fishing location and fishing technique). The results showed that fishing for "corvina" Plagioscion squamosissimus (Heckel), predominant in the 1990s, had been replaced by fishing focused on the Nile tilapia. This substitution appears to be due to the increasing levels of eutrophication in the reservoir, combined with changes in fishing techniques. The pattern of the fisheries in Barra Bonita Reservoir follow those in other eutrophic Brazilian reservoirs, with catches of the exotic Nile tilapia predominating. . Cinco técnicas de pesca foram identificadas: tarrafas, rede de espera, rede de arrasto, pesca da batida e pesca da batida + rede de espera. Análise de DCA relacionou as estratégias ativas com a captura de tilápia, as estratégias passivas com a captura de Pimelodus maculatus (Lacepède) e Triporthues angulatus (Spix & Agassiz) e a estratégia mista com a captura de tilápia, cascudos e Prochilodus lineatus (Valenciennes). Os resultados da ANCOVA foram significativos para todas as variáveis analisadas (época, local de pesca e técnicas de pesca). Os resultados mostram uma substituição da pesca da corvina, Plagioscion squamossisimus (Heckel) na década de 1990, pela tilápia-do-nilo. A substituição pode ter sido provocada pelo aumento da eutrofização do reservatório, aliado à mudança das estratégias de pesca. A pesca no reservatório de Barra Bonita seguiu padrões de outros reservatórios eutrofizados brasileiros, com a pesca sustentada pela exótica tilápia-do-nilo. KeywordsPalavras-chave: eutrofização, Oreochromis niloticus, pesca de pequena escala, espécie exótica, estratégias de pesca.

show abstract

Section: Catch Per Unit Effort (Cpue)mentioning

confidence: 98%

“…Inland artisanal fisheries in Brazil are common in rivers, flood plains, artificial reservoirs, and dam (Petrere Junior, 1996). Artisanal fisheries in reservoirs range widely in size and are often poorly organised and under complex and contradictory government legislation and inspection.…”

Section: Introductionmentioning

confidence: 99%

Artisanal fisheries in a Brazilian hypereutrophic reservoir: Barra Bonita reservoir, middle Tietê river

Novaes

Carvalho

2011

Braz. J. Biol.

View full text Add to dashboard Cite

show abstract

“…CPUE is generally assumed to be proportional to abundance and it expresses the performance of each fishing unit and resource availability, based on the catch (biomass) and unit effort (fishing time / space / gear type, etc.) [34][35][36].…”

Section: Fisheries Data and Cpuementioning

confidence: 99%

Assessing the Impact of Temperature and Chlorophyll Variations on the Fluctuations of Sardine Abundance in Al-Hoceima (South Alboran Sea)

Abdellaoui¹,

Berraho²,

Falcini³

et al. 2017

J Marine Sci Res Dev

View full text Add to dashboard Cite

Landings of small pelagic fish in Moroccan Mediterranean Sea show large fluctuations and trends, a fact that has a considerable socio-economic impact. These changes are often related to the impact of the environmental conditions on recruitment processes. We investigate fluctuations of the sardine's abundance at one of the most important fishing areas of the Moroccan Mediterranean Sea (i.e., Al-Hoceima region) and try to assess the impact of environmental changes on the availability of pelagic fish in this area. In these regards, we analyzed Seasonal and Trends Loess' (STL) decomposition of time series between 2008 and 2015 of catch-per-unit-effort (CPUE) data along with environmental parameters (i.e., sea surface temperature and chlorophyll-a) from remote sensing and we applied nonlinear models (GAM). Results show an inverse relationship between fluctuations of sardine CPUE and sea surface temperature. Nonlinear relationships confirm that the temperature is the most important parameter affecting abundance, whereas chlorophyll-a, is generally, weakly correlated to the CPUE data at monthly and seasonal level variations, except for annual trends. The analysis also shows positive trend of chlorophyll-a, from 2003 and a negative one starting from 2011, revealing an inter-annual variability that support fish landings fluctuations. Modeling based on the relationships between the CPUE and temperature/chlorophyll-a, allowed better prediction of the sardine abundance in the Al-Hoceima fishing area (South Alboran Sea)..

show abstract

“…The data included number of vessel landing, vessel specification, and monthly catch of pole-and-line fleet. The catch rate or catch ability is calculated using equation as presented by Petrere et al(2010) as below:…”

Section: Primarymentioning

confidence: 99%

Current Status of the Pole-and-Line Fishery in Eastern Part of Indonesia

Widodo¹,

Wudianto²,

Satria³

2016

Indonesian Fisheries Research Journal

View full text Add to dashboard Cite

The promotion of pole-and-line fishery for a selective gear operating in the Indonesian tuna management area is considered as the proper policy in response to the increasing market demand with tuna eco-labeled. Appropriate information in addressing the current status of the pole-and-line fishery in Indonesia is an important step in order to support the promotion. Data used to describe the fishery were obtained through scientific port sampling program in collaboration between RCFMC and WCPFC in 2010 to 2014 and also scientific observer onboard program collaboration RCFMC and CRAC Co.

show abstract

Catch-per-unit-effort: which estimator is best?

Cited by 48 publications

References 13 publications

Artisanal fisheries in a Brazilian hypereutrophic reservoir: Barra Bonita reservoir, middle Tietê river

Artisanal fisheries in a Brazilian hypereutrophic reservoir: Barra Bonita reservoir, middle Tietê river

Assessing the Impact of Temperature and Chlorophyll Variations on the Fluctuations of Sardine Abundance in Al-Hoceima (South Alboran Sea)

Current Status of the Pole-and-Line Fishery in Eastern Part of Indonesia

Contact Info

Product

Resources

About