Gillnet selectivity for whitemouth croaker (Micropogonias furnieri) from southeastern and southern Brazil

Queirolo, Dante; Pio, Vanessa Mafra; Pezzuto, Paulo Ricardo; Ávila-da-Silva, Antônio Olinto; Haimovici, Manuel; Cardoso, L. P.

doi:10.3856/vol44-issue5-fulltext-10

Cited by 3 publications

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“…Another important factor is the selectivity of the two modalities, according to Souza et al (2007), capture of whitemouth croaker by pair trawl is less selective when compared to catches with gillnets. Mortality impinged by gillnets is usually concentrated within a relatively narrow range of sizes (Queirolo et al, 2016). In métier Croaker, the species was considered a massive target, which means that in the trips of this group a fishing tactic aimed specifically at whitemouth croaker was applied and the participation of this species in the landings becomes are much higher than the other species.…”

Section: Discussionmentioning

confidence: 99%

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The dynamics of whitemouth croaker fishing by gillnet and pair trawl in Southeastern Brazilian Bight

Corrêa¹,

Ávila-da-Silva²

2016

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ABSTRACT. The whitemouth croaker is considered the main demersal resource landed in southeastern and southern Brazil, caught mainly by gillnets and pair trawls. This study evaluated the directed fishing effort at whitemouth croaker in different fishing modalities (or 'metiers'). We also investigated the bathymetric range and seasonal variations related to capture of whitemouth croaker in each modality. In the different types of gillnet, the whitemouth croaker was considered an incidental species or "by catch", a target species and a 'massive' target. For pair trawlers, the species was considered a target species. Catches occurred mainly in depths ranging between 10-20 m. However, in winter the largest catches occurred in 75 m depths. Catches of the gillnet fisheries peaked mainly between May and July. Pair trawl catches had two annual peaks one between March and May and another between August and November. This seasonal variation is probably related to the migration pattern of the species in association with physical and operational characteristics of vessels. Keywords: Micropogonias furnieri, whitemouth croaker, directed effort, time series, southwest Atlantic Ocean.La dinámica de pesca de la corvina con redes de enmalle y de arrastre en pareja en Southeastern Brazilian Bight RESUMEN. La corvina es el principal recurso demersal desembarcado en el sureste y sur de Brasil, capturada principalmente por redes de enmalle y redes de arrastre en pareja. Este estudio evaluó el esfuerzo pesquero dirigido a la corvina en diferentes modalidades de pesca (o 'metiers'). También se analizó la distribución batimétrica y variaciones estacionales relacionadas con la captura de corvina en cada modalidad. En los diferentes tipos de redes de enmalle, la corvina se considerada como incidental, como especie de by-catch, especie objetivo y como objetivo 'masivo'. Para los arrastreros en pareja, la especie fue considerada una especie objetivo. Las capturas se produjeron principalmente en profundidades de 10 a 20 m. Sin embargo, en invierno las mayores capturas se obtuvieron a 75 m. Las capturas de las pesquerías con redes de enmalle alcanzaron su punto máximo, principalmente entre mayo y julio. Las capturas de arrastre en pareja tuvieron dos máximos anuales: entre marzo y mayo y otro entre agosto y noviembre. Esta variación estacional está probablemente relacionada con el patrón de migración de las especies en asociación con las características físicas y operativas de los buques.

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Section: Discussionmentioning

confidence: 99%

“…Multi-mesh gillnets are quite common. Specifically for whitemouth croaker mesh sizes from 70 to 130 mm are used (Queirolo et al, 2016). These gillnets are typically 1.5-6 m high and 700-3,000 m long.…”

Section: Methodsmentioning

confidence: 99%

The dynamics of whitemouth croaker fishing by gillnet and pair trawl in Southeastern Brazilian Bight

Corrêa¹,

Ávila-da-Silva²

2016

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“…O cálculo de coeficiente de variação do tamanho das corvinas foi de 15% nas ocupações, abaixo dos 20% estipulados por Brodeur (2002), o que mais uma vez indica a compatibilidade de pesca com uso de rede. Buscandose apoio nas práticas de pesca artesanal da corvina na atualidade, sabe-se que a malha da rede deve ter em torno de 80 mm (QUEIROLO et al, 2016).…”

Section: Técnicas De Captura Ou Como Garantir O Almoçounclassified

“…Mais uma vez esse dado indica um perfil compatível com pesca realizada com a ajuda de rede (GREENSPAN, 1998). A diferença em relação à Corvina está no tamanho da malha da rede, que deve ser inferior a 70mm (QUEIROLO et al, 2016). A necessidade de utilização de diferentes redes, associada a uma distribuição geográfica diferenciada no interior da baía, apontam para uma exploração específica de cada uma das espécies, assim como de diferentes zonas da baía Norte da Ilha de Santa Catarina.…”

Section: Técnicas De Captura Ou Como Garantir O Almoçounclassified

Arqueozoologia do sítio Rio do Meio (SC)

Gilson

Lessa

2021

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Os restos faunísticos identificados no sítio raso Rio do Meio oferecem uma perspectiva sobre aspectos do modo de vida dos grupos pré-coloniais do litoral sul do Brasil. Dados relativos ao número de restos, número mínimo de indivíduos e biomassa foram analisados sob perspectivas diacrônicas e sincrônicas. A dieta e outros aspectos atrativos em relação aos recursos, assim como sazonalidade, perfil dos recursos explorados, técnicas de captura dos animais e características dos ambientes explorados foram discutidas de forma integrativa. Os peixes teleósteos representam 97,2% dos restos identificados, seguidos pelos tubarões com 1,8%. A ordem de importância entre as duas categorias se inverte no valor total da biomassa: tubarões 54,6% e peixes 36,7%. Os dados indicam que o assentamento estava organizado para a exploração regular e intensiva do ecossistema da baía Norte.

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“…Trawlers (doublerig) were further described with regards to their physical characteristics and, most importantly, to the structure and operating patterns of the used nets (Queirolo et al, 2016a). A similar study was conducted on gillnetters (Queirolo et al, 2016b), but in this one selectivity patterns of the whitemouth croaker (Micropogonias furnieri) were differentiated among specific nets employed. Combined, these five studies demonstrated a) how Brazilian fishers have gradually adjusted their foraging behavior to either access greater diversity of targets or optimize catches of a preferred one, and b) the extent to which such a process has been accompanied by structural modifications on the fishing gear.…”

Section: Observed Fishing Operations Can Provide Unending Opportunmentioning

confidence: 99%

Pathways for sustainable industrial fisheries in southeastern and southern Brazil

Arana¹,

Pezzuto²,

Ávila-da-Silva³

et al. 2016

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Gillnet selectivity for whitemouth croaker (Micropogonias furnieri) from southeastern and southern Brazil

Cited by 3 publications

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The dynamics of whitemouth croaker fishing by gillnet and pair trawl in Southeastern Brazilian Bight

The dynamics of whitemouth croaker fishing by gillnet and pair trawl in Southeastern Brazilian Bight

Arqueozoologia do sítio Rio do Meio (SC)

Pathways for sustainable industrial fisheries in southeastern and southern Brazil

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