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A biometric for shark dorsal fins based on boundary descriptor matching
A biometric for shark dorsal fins based on boundary descriptor matching Taina Coleman and Jucheol Moon ABSTRACT: Recent progress in animal biometrics has revolutionized wildlife research. Cutting edge techniques allow researchers to track individuals through noninvasive methods of recognition that are not only more reliable, but also applicable to large, hard-to-find, and otherwise difficult to
The Sandy Zebra Shark: A New Color Morph of the Zebra Shark
The Sandy Zebra Shark: A New Color Morph of the Zebra Shark Stegostoma tigrinum, with a Redescription of the Species and a Revision of Its Nomenclature Rikke Beckmann Dahl, Eva Egelyng Sigsgaard, Gorret Mwangi, Philip Francis Thomsen, René Dalsgaard Jørgensen, Felipe de Oliveira Torquato, Lars Olsen, Peter Rask Møller ABSTRACT: The Zebra Shark, in recent
Report of a new shark attack on a surfer in Uruguay
REPORTE SOBRE UN NUEVO ATAQUE DE TIBURON (Elasmobranchii: Carcharhinidae) A UN SURFISTA EN COSTAS DE URUGUAY Pablo Nuñez, Carlos Prigioni, Alvaro Sappa ABSTRACT: A new shark attack (Carcharhinidae) is reported for the coasts of the department of Maldonado, Uruguay. The circumstances of the accident are described and the available information on the attack and the
On the Presence of White Shark, Carcharodon carcharias, in Uruguay
El Tiburón blanco (Carcharodon carcharias) (Lamniformes: Lamnidae) en el Uruguay C. Prigioni, A. Sappa, F. Leon, P. Nuñez ABSTRACT: A jaw of Carcharodon carcharias is reported, obtained in the 40s by fishermen from Valizas, Rocha. Bibliographic, oral and photographic references of their presence in Uruguayan waters are gathered and the causes of their apparent occasional
Seasonal changes in basking shark vertical space use in the north-east Atlantic
Seasonal changes in basking shark vertical space use in the north-east Atlantic P. D. Doherty, J. M. Baxter, B. J. Godley, R. T. Graham, G. Hall, J. Hall, L. A. Hawkes, S. M. Henderson, L. Johnson, C. Speedie, M. J. Witt ABSTRACT: Mobile marine species can exhibit vast movements both horizontally and vertically. Spatial analysis
DNA analysis of elasmobranch products originating from Bangladesh reveals unregulated elasmobranch fishery
DNA analysis of elasmobranch products originating from Bangladesh reveals unregulated elasmobranch fishery and trade on species of global conservation concern Alifa Bintha Haque, Sudipta Arka Das, Aparna Riti Biswas ABSTRACT: Trade involving elasmobranch products in Bangladesh is a four-decade-long practice in large scale and there is little understanding of its impact on species composition, population,
Climate cooling and clade competition likely drove the decline of lamniform sharks
Climate cooling and clade competition likely drove the decline of lamniform sharks Fabien L. Condamine, Jules Romieu, Guillaume Guinot ABSTRACT: Understanding heterogeneity in species richness between closely related clades is a key research question in ecology and evolutionary biology. Multiple hypotheses have been proposed to interpret such diversity contrasts across the tree of life, with
The neglected complexities of shark fisheries
The neglected complexities of shark fisheries, and priorities for holistic risk-based management Hollie Booth, Dale Squires, E.J. Milner-Gulland ABSTRACT: Sharks and their cartilaginous relatives (Class Chondrichthyes, herein ‘sharks’) are one of the world’s most threatened species groups. Their slow life history traits and vulnerability to capture make them particularly susceptible to overfishing, and they are
Threatened shark species in pet food and beauty care products
Genetic identification of threatened shark species in pet food and beauty care products Diego Cardeñosa ABSTRACT: Contemporary global demand for shark commodities such as fins, meat, and liver oil, is arguably the main driver of shark overexploitation trends observed in the last three decades. Shark are most commonly traded for their fins to be used in
Investigating body condition and foraging success in young reef sharks between an atoll and an island system
Same species, different prerequisites: investigating body condition and foraging success in young reef sharks between an atoll and an island system Ornella C. Weideli, Ian A. Bouyoucos, Yannis P. Papastamatiou, Gauthier Mescam, Jodie L. Rummer, Serge Planes ABSTRACT: Acquiring and storing energy is vital to sharks of all age-classes. Viviparous shark embryos receive endogenous maternal
An environmental DNA tool for monitoring the status of Smalltooth Sawfish
An environmental DNA tool for monitoring the status of the Critically Endangered Smalltooth Sawfish, Pristis pectinata, in the Western Atlantic Ryan N. Lehman, Gregg R. Poulakis, Rachel M. Scharer, Katherine E. Schweiss, Jill M. Hendon, Nicole M. Phillips ABSTRACT: The Critically Endangered Smalltooth Sawfish, Pristis pectinata, was once widespread in the tropical and subtropical waters
High-performance suction feeding in an early elasmobranch
High-performance suction feeding in an early elasmobranch Michael I. Coates, Kristen Tietjen, Aaron M. Olsen, John A. Finarelli ABSTRACT: High-performance suction feeding is often presented as a classic innovation of ray-finned fishes, likely contributing to their remarkable evolutionary success, whereas sharks, with seemingly less sophisticated jaws, are generally portrayed as morphologically conservative throughout their history.
Multiple recurrent cutaneous masses in a cownose ray with progression from benign lesions to high‐grade carcinoma
Multiple recurrent cutaneous masses in a cownose ray (Rhinoptera bonasus) with progression from benign lesions to high‐grade carcinoma Bryan S. Vorbach, Lauren B. Peiffer, Leigh A. Clayton, Lisa M. Mangus ABSTRACT: Abstract not available Journal of Fish Diseases, Early View, DOI: 10.1111/jfd.13081 SOURCE
Multi-method assessment of whale shark residency, distribution, and dispersal behavior
Multi-method assessment of whale shark (Rhincodon typus) residency, distribution, and dispersal behavior at an aggregation site in the Red Sea Jesse E. M. Cochran, Camrin D. Braun, E. Fernando Cagua, Michael F. Campbell Jr., Royale S. Hardenstine, Alexander Kattan, Mark A. Priest, Tane H. Sinclair-Taylor, Gregory B. Skomal, Sahar Sultan, Lu Sun, Simon R. Thorrold,
In situ observations of deep-living skates
In situ observations of deep-living skates in the eastern North Pacific L.A. Kuhnz, J.J. Bizzarro, D.A .Ebert ABSTRACT: We report on 18 years of in situ observations of seven skate species (2192 individual observations) in the eastern North Pacific (Vancouver Island, Canada to the Gulf of California, Mexico) between 200 and 3322 m depth. Biological (species,