Scientific Papers

Using fisher‐contributed secondary fins to fill critical shark‐fisheries data gaps

Using fisher‐contributed secondary fins to fill critical shark‐fisheries data gaps

Using fisher‐contributed secondary fins to fill critical shark‐fisheries data gaps Jessica R. Quinlan, Shannon J. O’Leary, Andrew T. Fields, Martin Benavides, Emily Stumpf, Ramon Carcamo, Joel Cruz, Derrick Lewis, Beverly Wade, George Amato, Sergios‐Orestis Kolokotronis, Gina M. Clementi, Demian D. Chapman ABSTRACT: Developing‐world shark fisheries are typically not assessed or actively managed for sustainability; one

Identifying nearshore nursery habitats for sharks in the Eastern Tropical Pacific

Identifying nearshore nursery habitats for sharks in the Eastern Tropical Pacific

Identifying nearshore nursery habitats for sharks in the Eastern Tropical Pacific from fisheries landings and interviews Juliana López-Angarita, Melany Villate, Juan Manuel Díaz, Juan C. Cubillos, Alexander Tilley ABSTRACT: The Eastern Tropical Pacific (ETP) comprising the coasts of Costa Rica, Panama, Colombia and Ecuador, represents an area of high marine biodiversity that supports productive fisheries

Age and growth of tiger shark from Western Australia

Age and growth of tiger shark from Western Australia

Age and growth of tiger shark (Galeocerdo cuvier) from Western Australia Sophia M. Emmons, Brooke M. D’Alberto, Jonathan J. Smart, Colin A. Simpfendorfer ABSTRACT: The tiger shark (Galeocerdo cuvier) is believed to be a fast-growing shark that has shown regional variation in growth. Vertebrae samples were taken from 124 tiger sharks (60 females, 38 males,

Confirmation of Luminescence Ability for the velvet dogfish

Confirmation of Luminescence Ability for the velvet dogfish

A Third Luminous Shark Family: Confirmation of Luminescence Ability for Zameus squamulosus (Squaliformes; Somniosidae) Laurent Duchatelet, Raphaël Marion, Jérôme Mallefet ABSTRACT: Since recently, shark’s bioluminescence has been recorded from two Squaliformes families, the Etmopteridae and Dalatiidae. Pictures of luminescence, light organ morphologies, and physiology of the luminous control have been described for species of the

Elucidating shark diets with DNA metabarcoding from cloacal swabs

Elucidating shark diets with DNA metabarcoding from cloacal swabs

Elucidating shark diets with DNA metabarcoding from cloacal swabs Maurits P. M. van Zinnicq Bergmann, Bautisse D. Postaire, Kirk Gastrich, Michael R. Heithaus, Lisa A. Hoopes, Kady Lyons, Yannis P. Papastamatiou, Eric V. C. Schneider, Bradley A. Strickland, Brendan S. Talwar, Demian D. Chapman, Judith Bakker ABSTACT: Animal dietary information provides the foundation for understanding

Movement Patterns and Habitat Use of Juvenile Porbeagles

Movement Patterns and Habitat Use of Juvenile Porbeagles

Horizontal and Vertical Movement Patterns and Habitat Use of Juvenile Porbeagles (Lamna nasus) in the Western North Atlantic Gregory Skomal, Heather Marshall, Benjamin Galuardi, Lisa Natanson, Camrin D. Braun, Diego Bernal ABSTRACT: The porbeagle (Lamna nasus) is a large, highly migratory endothermic shark broadly distributed in the higher latitudes of the Atlantic, South Pacific, and

Reproductive aspects of seven threatened shark species

Reproductive aspects of seven threatened shark species

Reproductive aspects of seven threatened shark species captured by artisanal fisheries in the southern Caribbean Sea A. Tagliafico, M.S. Rangel, N.R. Ehemann, N.E. Rago, M.K. Broadhurst ABSTRACT: Venezuela is among the top four Latin American countries with the greatest elasmobranch biodiversity. The country is also characterised by extensive artisanal fisheries, but there is a paucity

Possible causes of a substantial decline in white shark sightings in South Africa

Possible causes of a substantial decline in white shark sightings in South Africa

Possible causes of a substantial decline in sightings in South Africa of an ecologically important apex predator, the white shark Robin Fisher ABSTRACT: A decline in sightings of a top predator, the white shark (Carcharadon carcharias), in South Africa was quantified in order to identify possible causes for this decline. White shark sightings data across

First complete description of the dark-mouth skate from Antarctic waters

First complete description of the dark-mouth skate from Antarctic waters

First complete description of the dark-mouth skate Raja arctowskii Dollo, 1904 from Antarctic waters, assigned to the genus Bathyraja (Elasmobranchii, Rajiformes, Arhynchobatidae) Matthias F. W. Stehmann, Simon Weigmann, Gavin J. P. Naylor ABSTRACT: The dark-mouth skate, Raja arctowskii Dollo, 1904 from Antarctic waters is an extraordinary case in skate taxonomy. For more than 100 years,

Morphometric description and biological notes on the kifetin shark

Morphometric description and biological notes on the kifetin shark

Morphometric description and biological notes on the rare kifetin shark Dalatias licha (Chondrichthyes: Dalatidae) from the Hellenic waters Vasiliki Kousteni ABSTRACT: Deep‐sea sharks are among the less studied and most endangered elasmobranchs existing in the Mediterranean Sea, and thus scientific research should be prioritized towards this vulnerable group of species. The aim of the present

Half a century of global decline in oceanic sharks and rays

Half a century of global decline in oceanic sharks and rays

Half a century of global decline in oceanic sharks and rays Nathan Pacoureau, Cassandra L. Rigby, Peter M. Kyne, Richard B. Sherley, Henning Winker, John K. Carlson, Sonja V. Fordham, Rodrigo Barreto, Daniel Fernando, Malcolm P. Francis, Rima W. Jabado, Katelyn B. Herman, Kwang-Ming Liu, Andrea D. Marshall, Riley A. Pollom, Evgeny V. Romanov, Colin

Seasonal Movement Patterns of Shortfin Mako Sharks in the Gulf of Mexico

Seasonal Movement Patterns of Shortfin Mako Sharks in the Gulf of Mexico

New Insights Into the Seasonal Movement Patterns of Shortfin Mako Sharks in the Gulf of Mexico Kesley J. Gibson, Matthew K. Streich, Tara S. Topping, Gregory W. Stunz ABSTRACT: Highly mobile apex predators such as the shortfin mako shark (mako shark; Isurus oxyrinchus) serve an important role in the marine ecosystem, and despite their declining

Protective effects of shark compound peptides against acute inflammation

Protective effects of shark compound peptides against acute inflammation

Protective effects of orally administered shark compound peptides from Chiloscyllium plagiosum against acute inflammation Tong-Xin Wang, Dong-Yan Shen, Qin Wang, Xin-Heng Xu, Xi Wang, Qing-Xi Chen, Jiang-Xing Zhuang, Yule-Yue Wang ABSTRACT: The anti-inflammatory effects of shark compound peptides (SCP) from Chiloscyllium plagiosum were investigated. Results showed that SCP enhanced the viability of RAW 264.7 macrophages

On the influence of biomimetic shark skin in dynamic flow separation

On the influence of biomimetic shark skin in dynamic flow separation

On the influence of biomimetic shark skin in dynamic flow separation Pengming Guo, Kai Zhang, Yuji Yasuda , Wenchao Yang, Josephine Galipon, David Emory Rival ABSTRACT: The effect of shark skin on the boundary-layer separation process under dynamic conditions (maneuvers) has been studied experimentally. We use a foil covered with biomimetic shark skin to explore

Population genetics reveals global and regional history of the tiger shark

Population genetics reveals global and regional history of the tiger shark

Population genetics reveals global and regional history of the apex predator Galeocerdo cuvier (carcharhiniformes) with comments on mitigating shark attacks in north‐eastern brazil Flávia R.S. Andrade, André S. Afonso, Fábio H.V. Hazin, Fernando F. Mendonça, Rodrigo A. Torres ABSTRACT: The knowledge of the population structure of a given species is of great importance for its