Scientific Papers

Page 1 of 7512345...102030...Last »

Displaying uncertainty in the biological reference points of sharks

Displaying uncertainty in the biological reference points of sharks

Published online on 28. July 2015 Displaying uncertainty in the biological reference points of sharks Matias Braccini, Elizabeth N. Brooks, Brent Wise, Rory McAuley ABSTRACT: Variability in life-history traits influences biological reference points (BRP). For data-poor species such as sharks, BRP have commonly been set at arbitrary values with little consideration of life-history variability. The ...

The presence of lateral photophores correlates with increased speciation in deep-sea bioluminescent sharks

The presence of lateral photophores correlates with increased speciation in deep-sea bioluminescent sharks

Published on 29. July 2015 The presence of lateral photophores correlates with increased speciation in deep-sea bioluminescent sharks Julien M. Claes, Dan-Eric Nilsson, Jérôme Mallefet, Nicolas Straube ABSTRACT: The vast majority of species within the lanternshark genus Etmopterus harbour complex luminescent markings on their flanks, whose functional significance has long remained obscure. Recent studies, however, ...

First data on the age, growth and sexual maturity of the piked spurdog in the Gulf of Gabès

First data on the age, growth and sexual maturity of the piked spurdog in the Gulf of Gabès

Published online on 29. July 2015 First data on the age, growth and sexual maturity of the piked spurdog, Squalus megalops (Chondrichthyes: Squalidae), in the Gulf of Gabès (central Mediterranean Sea) Sondes Marouani, Hasna Kadri, Mohamed Nejmeddine Bradai ABSTRACT: The occurrence of the piked spurdog (Squalus megalops) in the Gulf of Gabès (Tunisia, central Mediterranean ...

Do sawfish represent South Africa’s first local extirpation of marine elasmobranchs in the modern era?

Do sawfish represent South Africa’s first local extirpation of marine elasmobranchs in the modern era?

Published online on 24. July 2015 Do sawfish Pristis spp. represent South Africa’s first local extirpation of marine elasmobranchs in the modern era? BI Everett, G Cliff, SFJ Dudley, SP Wintner, RP van der Elst ABSTRACT: Largetooth sawfish Pristis pristis and green sawfish P. zijsron were not uncommon in catches made in KwaZulu‑ Natal (KZN) ...

Hooking mortality of scalloped hammerhead and great hammerhead sharks caught on bottom longlines

Hooking mortality of scalloped hammerhead and great hammerhead sharks caught on bottom longlines

Published online on 24. July 2015 Hooking mortality of scalloped hammerhead Sphyrna lewini and great hammerhead Sphyrna mokarran sharks caught on bottom longlines SJB Gulak, AJ de Ron Santiago, JK Carlson ABSTRACT: The scalloped hammerhead Sphyrna lewini and the great hammerhead S. mokarran are typically caught as bycatch in a variety of fisheries and are ...

Pelagic shark fisheries of Indonesia’s Eastern Indian Ocean Fisheries Management Region

Pelagic shark fisheries of Indonesia’s Eastern Indian Ocean Fisheries Management Region

Published online on 24. July 2015 Pelagic shark fisheries of Indonesia’s Eastern Indian Ocean Fisheries Management Region Fahmi & Dharmai ABSTRACT: Sharks are commonly caught in Indonesian waters both by target fisheries and as bycatch. Fishers targeting sharks mostly employ drift longlines, whereas tuna longlines and gillnets are the gear mostly responsible for shark bycatch. ...

Fisheries management and conservation of sharks in Indonesia

Fisheries management and conservation of sharks in Indonesia

Published online on 24. July 2015 Fisheries management and conservation of sharks in Indonesia Dharmadi, Fahmi, F Satria ABSTRACT: Indonesian waters have a high diversity of sharks and rays, with at least 118 species belonging to 25 families found throughout the vast archipelago. Indonesia also has the highest shark landings globally and nearly all high‑value ...

The current status and management of South Africa’s chondrichthyan fisheries

The current status and management of South Africa’s chondrichthyan fisheries

Published online on 24. July 2015 The current status and management of South Africa’s chondrichthyan fisheries C da Silva, AJ Booth, SFJ Dudley, SE Kerwath, SJ Lamberth, RW Leslie, ME McCord, WHH Sauer, T Zweig ABSTRACT: Chondrichthyans (sharks, skates, rays and chimaeras) are captured in many marine fisheries. Management and research efforts directed at chondrichthyan ...

Seasonality, behaviour and philopatry of spotted ragged‑tooth sharks in Eastern Cape nursery areas, South Africa

Seasonality, behaviour and philopatry of spotted ragged‑tooth sharks in Eastern Cape nursery areas, South Africa

Published online on 24. July 2015 Seasonality, behaviour and philopatry of spotted ragged‑tooth sharks Carcharias taurus in Eastern Cape nursery areas, South Africa MJ Smale, ML Dicken, AJ Booth ABSTRACT: Spotted ragged‑tooth sharks Carcharias taurus occur along the southern and eastern coasts of South Africa. We report on movements of juveniles and adults within a ...

Baited remote underwater video system (BRUVs) survey of chondrichthyan diversity in False Bay, South Africa

Baited remote underwater video system (BRUVs) survey of chondrichthyan diversity in False Bay, South Africa

Published online on 24. July 2015 Baited remote underwater video system (BRUVs) survey of chondrichthyan diversity in False Bay, South Africa L De Vos, RGA Watson, A Götz, CG Attwood ABSTRACT: Global declines in chondrichthyan populations necessitate evidence‑based planning for their conservation. False Bay, in south‑west South Africa, has a high diversity of marine biota, ...

Page 1 of 7512345...102030...Last »