Estudo do ciclo de vida do peixe-espada Trichiurus lepturus

Nakatani, Keshiyu; Matsuura, Yasunobu; Sato, Gosuke

doi:10.1590/s0373-55241980000200053

Cited by 9 publications

(10 citation statements)

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“… Source: “Sea Around Us” project database (Sea Around Us project, ), and other complementary sources (Araújo, ; IBAMA, ,b, , ; Krug & Haimovici, ; Nakatani et al., ; Paiva, ; SUDEPE, , ; Valentini & Cardoso, ; Valentini & Pezzuto, ; Valentini, D'incao, Rodrigues, Neto, et al, ; Valentini, D'incao, Rodriguez, Rebelo Neto, et al, ) used for landings data set; while CEAGESP (1968–2007) used for market data set. * 10% significance level, ** 5% significance level, and *** 1% significance level. …”

Section: Discussionmentioning

confidence: 99%

“…Fishing landing data for the period 1968–2007 were compiled for the South Brazil Shelf Large Marine Ecosystem (SBSLME) (Supporting Information Table S1) from the “Sea Around Us” project database (Sea Around Us project, ) and other complementary sources (Araújo, ; IBAMA ,b, , ; Krug & Haimovici, ; Nakatani, Matsuura & Sato, ; Paiva, ; SUDEPE, , ; Valentini & Cardoso, ; Valentini, D'incao, Rodrigues, Neto & Rahn, ; Valentini, D'incao, Rodriguez, Rebelo Neto & Domit, ; Valentini & Pezzuto, )…”

Section: Methodsmentioning

confidence: 99%

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Exploring simple ecological indicators on landings and market trends in the South Brazil Shelf Large Marine Ecosystem

Pincinato

Gasalla

2019

Fisheries Management Eco

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Simple ecological indicators were applied to landings and market data from the South Brazil Shelf Large Marine Ecosystem to investigate pressures on the ecosystem over time to contribute to fisheries and ocean assessments in data‐poor ecosystems. The indicators showed an increase in larger, long‐lived and piscivorous pelagic species landings as well as an increase in offshore fishing over the past few decades. Indicators based on market data showed a decrease of not only the target species but also of some long‐lived and large‐size coastal species, resulting in an increase of previously undesired fish species in the markets. Each of the selected indicators expressed part of the picture, while putting all together resulted in a more comprehensive view of the historical behaviour of this system.

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Exploring simple ecological indicators on landings and market trends in the South Brazil Shelf Large Marine Ecosystem

Pincinato

Gasalla

2019

Fisheries Management Eco

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“…Todos os valores em %. (Nakatani et al, 1980), seja por análise da maturação gonadal dos adultos (Magro, 2005). No sul do Brasil, Martins e Haimovici (2000) obtiveram evidências disso na quebra de talude, embora na plataforma a atividade estivesse restrita a primavera e verão.…”

Section: Methodsunclassified

Atividade reprodutiva do peixe-espada, Trichiurus lepturus (Teleostei, Trichiuridae), vulnerável à pesca de pequena escala no extremo-norte do litoral de Santa Catarina, Brasil

Chaves¹

2011

Biotemas

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ResumoO peixe-espada, Trichiurus lepturus, foi investigado nos desembarques da pesca de pequena escala realizada no litoral norte de Santa Catarina, objetivando avaliar época e artes em que a pesca incide sobre indivíduos em reprodução. Analisaram-se 398 exemplares, amostrados entre agosto de 2006 e agosto de 2007, provenientes das três artes mais praticadas na região: fundeio, caceio e arrasto. Fêmeas são maiores que machos, o que torna as redes de emalhe mais seletivas para aquele sexo que o arrasto.Estimou-se que fêmeas maturam pela primeira vez com 75,0cm, em média, enquanto machos com 64,0cm. Fundeio, caceio e arrasto são eficientes para indivíduos jovens e adultos, todavia indivíduos em reprodução foram registrados apenas nos dois primeiros. Ocorrência de fêmeas em hidratação pré-ovulatória e pós-desova, de machos maduros, e os valores elevados de Índice Gonadossomático (IGS), indicam que as pescas de fundeio e caceio atuam sobre indivíduos em atividade reprodutiva ao longo de todo o ano, com picos na primavera e no verão. Visto que no litoral norte de Santa Catarina o arrasto camaroeiro é interditado na primavera, recomenda-se reduzir a intensidade de uso de redes de emalhe durante a primavera e principalmente durante o verão, aliviando assim a pressão por pesca de indivíduos reprodutivos.Unitermos: reprodução, primeira maturação, desova, peixe-espada, sul do Brasil AbstractReproductive status of the swordfish, Trichiurus lepturus (Teleostei, Trichiuridae), exposed to small-scale fishing on the north coast of Santa Catarina state, southern Brazil. The swordfish, Trichiurus lepturus, caught by small-scale fishermen from a community of southern Brazil was investigated based on 398 individuals landed from August 2006 to August 2007, aiming to evaluate in which periods and fishing techniques the reproductive individuals of this species are most exposed to fishing activities. The analysis took into consideration the length of individuals, the morphological attributes of their gonads, the Gonadossomatic Biotemas, 22 (2): 77-84, junho de 2009

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“…Teleost fishes with pelagic eggs synchronize spawning with favorable physical conditions such as transport, horizontal advection, stability of the water column and coastal upwellings that increase the chances of released larvae to access food concentrations and avoid dispersion, consequently increasing survival rate (Bakun and Parrish 1980). Off southeastern Brazil, Nakatani et al (1980) found larger concentrations of eggs and larvae of T. lepturus near coastal islands where the deviation of marine currents may enhance production due to local upwellings (Mann and Lazier, 1991). In southern Brazil productivity processes are of a larger scale associated with the presence during winter and early spring from cold waters of the runoff of the La Plata River and waters of subantarctic origin (Odebrecht and Garcia, 1997).…”

Section: Introductionmentioning

confidence: 99%

Reproduction of the cutlassfish <i>Trichiurus lepturus</i> in the southern Brazil subtropical convergence ecosystem

Martins¹,

Haimovici²

2000

Sci. Mar.

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The reproduction of the cutlassfish Trichiurus lepturus was studied from samples collected in bottom trawl surveys on the continental shelf and shelf break off southern Brazil. The mean total length (L T) at first gonadal maturity was 63.9 cm for males and 69.3 cm for females. Batch fecundity ranged from 3,917 in a specimen of 70 cm L T to 154,216 in a specimen of 141 cm but the number of spawning batches in each season was not established. Spawning occurs in late spring and summer in the continental shelf and probably year round over the shelf break. High surface temperatures and moderate stratification of the water column were associated with the final stages of gonadal maturation. Seasonal and spatial differences in sex ratios, sizes, maturity stages and feeding intensities suggest that adult female T. lepturus remain during the cold season in the continental shelf of southern Brazil to feed, while adult males move to warmer waters northward or offshore.

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Estudo do ciclo de vida do peixe-espada Trichiurus lepturus

Cited by 9 publications

References 0 publications

Exploring simple ecological indicators on landings and market trends in the South Brazil Shelf Large Marine Ecosystem

Exploring simple ecological indicators on landings and market trends in the South Brazil Shelf Large Marine Ecosystem

Atividade reprodutiva do peixe-espada, Trichiurus lepturus (Teleostei, Trichiuridae), vulnerável à pesca de pequena escala no extremo-norte do litoral de Santa Catarina, Brasil

Reproduction of the cutlassfish <i>Trichiurus lepturus</i> in the southern Brazil subtropical convergence ecosystem

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