Comparability of blue shark mortality estimates for the Atlantic and Pacific longline fisheries

Campana, Steven E.; Joyce, Warren; Francis, Malcolm P.; Manning, Michael

doi:10.3354/meps08433

Cited by 18 publications

(28 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Overall, a number of studies revealed different pattern in bycatch among gears, fisheries, fishing areas and species composition [10,11,22] and references there in. For sharks, pelagic longlines targeting tuna and tuna-like species reflect the highest global shark bycatch ratio and one of the largest discard ratio [23,24].…”

Section: Elasmobranchs Bycatchmentioning

confidence: 99%

Fisheries Bycatch of Chondrichthyes

Bonanomi¹,

Brčić²,

Colombelli³

et al. 2017

Chondrichthyes - Multidisciplinary Approach

View full text Add to dashboard Cite

This chapter reviews the current state of knowledge about global chondrichthyes bycatch, including how the combination of biological characteristics of these species and the impact of different fishing methods reflect their vulnerability to bycatch. Specifically, it summarizes the present status of elasmobranchs and chimaeras bycatch worldwide.Following this, it illustrates the main ecological consequences behind such incidental captures. Hence, it provides a description of how chondrichthyes bycatch occurs across broad fishing gear categories. Moreover, it outlines potential mitigation options available to reduce bycatch. As such, the main technical measures tested and applied in different fishing practices are listed. In addition, an overview about which are the current management measures implemented at international level to ensure long-term conservation of cartilaginous fish is reported. Then, two case studies summarize how chondrichthyes bycatch occurred in some of the most exploited fishing areas. Finally, the chapter ends with relevant considerations about potential for new research needed to monitor and reduce chondrichthyes bycatch.

show abstract

Section: Elasmobranchs Bycatchmentioning

confidence: 99%

Fisheries Bycatch of Chondrichthyes

Bonanomi¹,

Brčić²,

Colombelli³

et al. 2017

Chondrichthyes - Multidisciplinary Approach

View full text Add to dashboard Cite

show abstract

“…(NAKANO;SEKI, 2002;BORNATOWISK;SCHWINGEL, 2008;QUAGGIO et al, 2008;LEGAT;VOOREN, 2008). Na costa brasileira é o tubarão mais abundante (HAZIN; LESSA, 2005), Esta espécie de tubarão é capturada pela frota que opera em alto mar (KAKANO;SEKI, 2002;QUAGGIO et al, 2008), principalmente em pescaria de grandes navios nos Oceanos Pacíficos e Atlântico (CAMPANA et al, 2009). É capturado na pesca de espinhel de atum e espadarte na região sudeste-sul do Brasil (MOURATO, 2007).…”

Section: Tubarão-azulunclassified

“…É capturado na pesca de espinhel de atum e espadarte na região sudeste-sul do Brasil (MOURATO, 2007). É fonte de alimentação no Brasil e em alguns países da América do Sul (CAMPANA et al, 2009).…”

Section: Tubarão-azulunclassified

“…Sua captura por embarcações que operam em alto mar é relativamente fácil (NAKANO; SEKI, 2003;QUAGGIO et al, 2008), principalmente em pescaria por grandes barcos espinheleiros nos Oceanos Pacífico e Atlântico, (CAMPANA et al, 2009). …”

Section: Introductionunclassified

“…Esta espécie é fonte de alimentação no Brasil e em alguns países da América do Sul e são normalmente vendidos em postas em mercados e feiras livres (CAMPANA et al, 2009). …”

Section: Introductionunclassified

See 2 more Smart Citations

<b>Desenvolvimento embrionário dos órgãos linfoides do Tubarão-azul, <i>Prionace glauca</i> (Linnaeus, 1758), Elasmobranchii, Carcharhiniformes</b>

Bruno¹

View full text Add to dashboard Cite

Agradecimentos Agradeço a todos os Agradeço aos meus alunos do Curso Pré Universitário Tetris e todos os professores e coordenadores. Obrigado por fazer meus sábados mais animados #C.F. As minhas tias e avós e bisavós do Fórum a qual eu admiro demais, muito obrigado por sempre estarem ao meu lado. E por fim, mas não menos importante, agradeço aos meus Tios Gerson e Carolina, meus primos, Daniel, Levi e Ligia, por todo o carinho durante a minha existência, AmoMuito Vocês!!!!!! "Los pescadores somos los primeros que respetamos nuestros mares y nos jugamos la vida a diario para traer un producto fresco y de alta calidad ".

show abstract

Movement, depth distribution and survival of spinetail devilrays (Mobula japanica) tagged and released from purse‐seine catches in New Zealand

Francis

Jones

2016

Aquatic Conservation

View full text Add to dashboard Cite

1. Mobulid rays are protected in New Zealand, but the spinetail devilray Mobula japanica is caught as bycatch in skipjack tuna purse seine fisheries.2. Between 2005 and 2014, rays were recorded in 8.2% of observed purse seine sets. Rays were caught during summer, with a 'hotspot' (24.3% of sets) near the shelf edge off North Island over seabed depths of 150-350 m. Rays were usually brailed aboard with the tuna catch from successful sets, but were often entangled in the bunt of the net during unsuccessful sets.3. Observers tagged nine rays with popup archival tags to obtain preliminary information on their post-release survival, and spatial and vertical movements. Seven of the nine tags reported data, and four of those rays died within 2-4 days of release. All four rays that died had been brought aboard entangled in the bunt. The three surviving rays were all brailed aboard with the tuna catch. 4. One surviving ray remained near New Zealand for 2.7 months during summer, and the other two migrated 1400-1800 km northward to tropical waters near Vanuatu and Fiji at minimum speeds of 47 and 63 km day À1 at the end of summer. 5. Archive data from one ray showed that it made regular vertical movements of 25-100 m amplitude, but spent most of its time shallower than 50 m, more so during the night (89.6%) than the day (76.6%), and mainly experienced temperatures of 18À22°C. Dives deeper than 200 m were usually made during the day or twilight.6. All three surviving rays typically moved between the surface and 200-300 m daily, and reached greatest depths of 649 m, 1000 m and 1112 m, respectively, substantially exceeding the previous depth record for this species of 445 m. 7. Recommendations are made for reducing purse seine mortality of mobulid rays by avoiding areas of high ray abundance, avoiding setting on ray-associated tuna schools, and adopting best-practice methods of returning rays to the sea from the net or vessel.

show abstract

Comparability of blue shark mortality estimates for the Atlantic and Pacific longline fisheries

Cited by 18 publications

References 8 publications

Fisheries Bycatch of Chondrichthyes

Fisheries Bycatch of Chondrichthyes

<b>Desenvolvimento embrionário dos órgãos linfoides do Tubarão-azul, <i>Prionace glauca</i> (Linnaeus, 1758), Elasmobranchii, Carcharhiniformes</b>

Movement, depth distribution and survival of spinetail devilrays (Mobula japanica) tagged and released from purse‐seine catches in New Zealand

Contact Info

Product

Resources

About