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Demographic and Exploitation Parameters of the Blue Shark in the Gulf of Guinea
Demographic and Exploitation Parameters of the Blue Shark, Prionace Glauca in the Gulf of Guinea (Togo-Benin-Nigeria) Calèbe Midinoudéwa, H.E.; Sohou, Z.; Tulashie, S.K.; Fiogbé, E.D. ABSTRACT: Prionace glauca, blue shark is a cosmopolitan species. Together with Carcharhinus falciformis, it co-dominated the landings of carcharhinidae sharks at the Artisanal Fishing Port of Cotonou. The objective of
Determining the Authenticity of Shark Meat Products by DNA Sequencing
Determining the Authenticity of Shark Meat Products by DNA Sequencing Patrizia Marchetti, Anna Mottola, Roberta Piredda, Giuseppina Ciccarese, Angela Di Pinto ABSTRACT: Given that the global shark meat market is poised to grow in future years, the aim of this study was to use DNA sequencing of the cytochrome c oxidase I (COI) and NADH
A morphologically abnormal and highly metal-contaminated Spotback Skate
First record of a morphologically abnormal and highly metal-contaminated Spotback Skate Atlantoraja castelnaui (Rajiformes: Arhynchobatidae) from southeastern Rio de Janeiro, Brazil Rachel Ann Hauser-Davis, Márcio L.V. Barbosa-Filho, Lucia Helena S. de S. Pereira, Catarina A. Lopes, Sérgio C. Moreira, Rafael C.C. Rocha, Tatiana D. Saint’Pierre, Paula Baldassin, Salvatore Siciliano ABSTRACT: This paper reports the first
Preliminary age and growth of the goblin shark
Preliminary age and growth of the deep-water goblin shark Mitsukurina owstoni (Jordan, 1898) Fabio P. Caltabellotta, Zachary A. Siders, Gregor M. Cailliet, Fabio S. Motta, Otto B. F. Gadig ABSTRACT: Owing to poorly mineralising structures, ageing deep-water elasmobranchs requires unconventional techniques. The aim of the present study was to develop an ageing method for the
Can drifting objects drive the movements of a vulnerable pelagic shark?
Can drifting objects drive the movements of a vulnerable pelagic shark? Lucas Bonnin, Christophe Lett, Laurent Dagorn, John David Filmalter, Fabien Forget, Philippe Verley, Manuela Capello ABSTRACT: Juvenile silky sharks (Carcharhinus falciformis) regularly associate with floating objects yet the reasons driving this behaviour remain uncertain. Understanding the proportion of time that silky sharks spend associated
Autonomous underwater videography and tracking of basking sharks
Autonomous underwater videography and tracking of basking sharks L.A. Hawkes, O. Exeter, S. M. Henderson, C. Kerry, A. Kukulya, J. Rudd, S. Whelan, N. Yoder, M. J. Witt ABSTRACT: Background Biologging studies have revealed a wealth of information about the spatio-temporal movements of a wide range of vertebrates large enough to carry electronic tracking tags.
Sharks and rays caught by a small‐scale fisheries in the western equatorial Atlantic
Sharks and rays caught by a small‐scale fisheries in the western equatorial Atlantic Jones Santander‐Neto, Vicente Vieira Faria ABSTRACT: N/A Journal of Applied Ichthyology, Early View, DOI: 10.1111/jai.14103 SOURCE
When prey becomes killer: does a double lethal attack on a blue shark reveal a precise defensive strategy in young swordfish?
When prey becomes killer: does a double lethal attack on a blue shark reveal a precise defensive strategy in young swordfish? Teresa Romeo, Pietro Battaglia, Domenico Macaluso, Giuseppe Tagliavia, Teresa Manuela Vicchio, Manuela Falautano, Fabrizio Serena, Franco Andaloro ABSTRACT: In this paper a rare case of a double swordfish mortal attack against an adult blue
Multiyear social stability and social information use in reef sharks with diel fission–fusion dynamics
Multiyear social stability and social information use in reef sharks with diel fission–fusion dynamics Yannis P. Papastamatiou, Thomas W. Bodey, Jennifer E. Caselle, Darcy Bradley, Robin Freeman, Alan M. Friedlander, David M. P. Jacoby ABSTRACT: Animals across vertebrate taxa form social communities and often exist as fission–fusion groups. Central place foragers (CPF) may form groups
Development and regeneration of the crushing dentition in skates
Development and regeneration of the crushing dentition in skates (Rajidae) Liam J. Rasch, Rory L. Cooper, Charlie Underwood, Wesley A. Dillard, Alexandre P. Thiery, Gareth J. Fraser ABSTRACT: Sharks and rays (elasmobranchs) have the remarkable capacity to continuously regenerate their teeth. The polyphyodont system is considered the ancestral condition of the gnathostome dentition. Despite this
The effects of bait provisioning in the blacktip reef shark
Human‐induced shifts in habitat use and behaviour of a marine predator: the effects of bait provisioning in the blacktip reef shark J. Mourier, J. Claudet, S. Planes ABSTRACT: While the negative effects of consumptive pressures on marine predators are well established, the effects of increasing non‐consumptive activities such as wildlife tourism are still understudied. As
Artisanal fisheries impact on the smalltail shark from Northern Brazil
From plentiful to critically endangered: Demographic evidence of the artisanal fisheries impact on the smalltail shark (Carcharhinus porosus) from Northern Brazil Francisco Marcante Santana, Leonardo Manir Feitosa, Rosângela Paula Lessa ABSTRACT: The smalltail shark, Carcharhinus porosus, was the most abundant elasmobranch species in fisheries off Brazil’s northern coast (BNC) in the 1980s, but its population
Whale sharks get cleaned by the blue‐streak cleaner wrasse and the moon wrasse in the Philippines
Whale sharks Rhincodon typus get cleaned by the blue‐streak cleaner wrasse Labroides dimidiatus and the moon wrasse Thalassoma lunare in the Philippines Gonzalo Araujo, Joni A. Miranda, Harriet L. Allen, Jessica Labaja, Sally Snow, Alessandro Ponzo, Christine G. Legaspi ABSTRACT: Cleaning interactions are essential for healthy marine ecosystem communities. This study reports the first documentation
Shark longline survey in the eastern Bahamas, 1979 – 2013
Results of a fishery-independent longline survey targeting coastal sharks in the eastern Bahamas between 1979 and 2013 Brendan S. Talwar, Jeffrey A. Stein, Stephen M.H. Connett, Stephanie A. Liss, Edward J. Brooks ABSTRACT: Long-term trends in shark abundance offer important insights for fisheries management. Few fisheries-independent, extended time-series data exist for coastal shark species in
Traffic Report: Congo’s shark trade
Momballa, M. C. (2020). Rapid Assessment of the Artisanal Shark Trade in the Republic of the Congo. Yaounde, Cameroon and Cambridge, UK August 2020 PDF-DOWNLOAD