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Diverse stem-chondrichthyan oral structures and evidence for an independently acquired acanthodid dentition
Diverse stem-chondrichthyan oral structures and evidence for an independently acquired acanthodid dentition Richard P. Dearden and Sam Giles ABSTRACT: The teeth of sharks famously form a series of transversely organized files with a conveyor-belt replacement that are borne directly on the jaw cartilages, in contrast to the dermal plate-borne dentition of bony fishes that undergoes
Quantifying shark and ray discards in Western Australia’s shark fisheries
Quantifying shark and ray discards in Western Australia’s shark fisheries Matias Braccini, Hilario Murua ABSTRACT: Commercial fisheries can discard a considerable volume of sharks and rays, which, as a group, are of high conservation concern. In Western Australia (WA), commercial shark fishing commenced in the 1940s; however, catch time series are not available for discarded
Mercury concentrations and trophic relations in sharks of the Pacific Ocean of Colombia
Mercury concentrations and trophic relations in sharks of the Pacific Ocean of Colombia Natalia Vélez, Sandra Bessudo, Dalia C. Barragán-Barrera, Felipe Ladino, Paco Bustamante, Andrea Luna-Acosta ABSTRACT: Sharks are fished for human consumption in Colombia, and fins are exported illegally to international markets. The goal was to identify differences in total mercury (THg) concentrations in
Length-weight relationship of four deep-sea chondrichthyans in Ecuadorian oceanic waters
Length-weight relationship of four deep-sea chondrichthyans (Elasmobranchii & Holocephali) in Ecuadorian oceanic waters Paulina Sepa, Dialhy Coello, Marco Herrera, René Zambrano ABSTRACT: The present work reported the length-weight relationship of four deep-sea chondrichthyan species (i.e., Hydrolagus spp., E. granulosus, C. owstonii and C. squamosus) captured by the experimental fishery of the depth cod (Dissostichus eleginoides)
Marine protected areas are not representative of chondrichthyan species assemblages in the Southwest Atlantic
Marine protected areas are not representative of chondrichthyan species assemblages in the Southwest Atlantic David E. Sabadin, Santiago A. Barbini, Daniel E. Figueroa, Luis O. Lucifora ABSTRACT: Evaluating the representativeness of species assemblages and species richness in a network of protected areas is key to reach a balanced and equitable network design. However, representativeness has
Evaluating the effects of a SharkSafe Barrier shoreline deployment on bull shark behaviour
Evaluating the effects of a SharkSafe Barrier™ shoreline deployment on bull shark (Carcharhinus leucas) behaviour Craig Patrick O’Connell, Juliet Gressle, Julia Crews, Andre A. King, Pingguo He ABSTRACT: Beach nets and drumlines are lethal devices that are used to minimize the interaction between potentially dangerous sharks and beachgoers. Mortality to these large shark species as
The Epidermal Microbiome Within An Aggregation of Leopard Sharks
The Epidermal Microbiome Within An Aggregation of Leopard Sharks (Triakis Semifasciata) Has Taxonomic Flexibility With Gene Functional Stability Across Three Time-Points Michael Doane, Colton Johnson, Shaili Johri, Emma N. Kerr, Megan M. Morris, Ric Desantiago, Abigail C. Turnlund, Asha Goodman, Maria Mora, Laís Farias Oliveira Lima, Andrew P. Nosal, Elizabeth A. Dinsdale ABSTRACT: Background: The
Sharks as exfoliators: widespread chafing between marine organisms suggests an unexplored ecological role
Sharks as exfoliators: widespread chafing between marine organisms suggests an unexplored ecological role Lacey H. Williams, Alexandra Anstett, Victor Bach Muñoz, John Chisholm, Chris Fallows, Jonathan R. Green, Jesús Erick Higuera Rivas, Gregory Skomal, Megan Winton, Neil Hammerschlag ABSTRACT: Ectosymbionts, such as bacteria and parasites, are found on the surface of organisms throughout the world’s
The application of precaution in elasmobranch conservation and management in the Mediterranean Sea
The application of precaution in elasmobranch conservation and management in the Mediterranean Sea Lydia Koehler, Ioannis Giovos, Jason Lowther ABSTRACT: This study examined the integration and application of the precautionary principle at national level for the conservation and management of elasmobranchs. Three countries, Greece, Malta, and Cyprus were assessed. Based on national legislation, policies, and
Abundance dynamics of a new, endemic batoid from Brazil: The Lutz’s stingray
Abundance dynamics of a new, endemic batoid from Brazil: The Lutz’s stingray, Hypanus berthalutzae Ilka Branco-Nunes. Yuri Niella, Fábio Hissa Vieira Hazin, Emmanuelly Creio, Paulo Guilherme Vasconcelos de Oliveira, André Sucena Afonso ABSTRACT: The Lutz’s stingray, Hypanus berthalutzae, is a recently identified, endemic dasyatid species which occurs in shallow habitats exclusively along most of the
Testing the ‘mistaken identity theory’ behind shark bites on humans
A shark’s eye view: testing the ‘mistaken identity theory’ behind shark bites on humans Laura A. Ryan, David J. Slip, Lucille Chapuis, Shaun P. Collin, Enrico Gennari, Jan M. Hemmi, Martin J. How, Charlie Huveneers, Victor M. Peddemors, Louise Tosetto, Nathan S. Hart ABSTRACT: Shark bites on humans are rare but are sufficiently frequent to
Defining distribution and habitat use of west-central Florida’s coastal sharks through a research and education program
Defining distribution and habitat use of west-central Florida’s coastal sharks through a research and education program Lindsay L. Mullins, J. Marcus Drymon, Moriah Moore, Adam Skarke, Alan Moore, John C. Rodgers ABSTRACT: Identifying critical habitat for highly mobile species such as sharks is difficult, but essential for effective management and conservation. In regions where baseline
The use of fishers’ Local Ecological Knowledge to reconstruct fish behavioural traits and fishers’ perception of conservation relevance of elasmobranchs in the Mediterranean Sea
The use of fishers’ Local Ecological Knowledge to reconstruct fish behavioural traits and fishers’ perception of conservation relevance of elasmobranchs in the Mediterranean Sea BARBATO, M., BARRÍA, C., BELLODI, A., BONANOMI, S., BORME, D., ĆETKOVIĆ, I., COLLOCA, F., COLMENERO, A., CROCETTA, F., De CARLO, F., DEMİR, E., Di LORENZO, M., FOLLESA, M., GARIBALDI, F., GIGLIO,
Advances in the study of the trophic niche of batoids with distribution in Mexican waters
Advances in the study of the trophic niche of batoids with distribution in Mexican waters Francisco Serrano-Flores, Yassir E. Torres-Rojas, Matthew J. Ajemian, Manuel Mendoza-Carranza, Juan C. Pérez-Jiménez ABSTRACT: Batoid (rays and skates) populations are declining worldwide, with unknown ecological consequences due to lacking consolidated data on the trophic ecology of these species. Such trends
Contemporary records of the rare and critically endangered angular rough shark from the eastern Adriatic Sea
Contemporary records of the rare and critically endangered angular rough shark, Oxynotus centrina (Linnaeus, 1758), from the eastern Adriatic Sea Andrej A. Gajić, Suvad Lelo, Aleksandar Joksimović, Ana Pešić, Jovana Tomanić, Hajrudin Beširović, Branko Dragičević ABSTRACT: Angular rough shark, Oxynotus centrina (Linnaeus, 1758), is a poorly known and rare bathydemersal shark inhabiting continental shelves and