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High Residency and Predictable Seasonal Movement of Whale Sharks Off Tanzania
No Place Like Home? High Residency and Predictable Seasonal Movement of Whale Sharks Off Tanzania Christoph A. Rohner, Jesse E. M. Cochran, E. Fernando Cagua, Clare E. M. Prebble, Stephanie K. Venables, Michael L. Berumen, Baraka L. Kuguru, Jason Rubens, Juerg M. Brunnschweiler, Simon J. Pierce ABSTRACT: Highly mobile marine megafauna species, while widely distributed
Whale sharks increase swimming effort while filter feeding
Whale sharks increase swimming effort while filter feeding, but appear to maintain high foraging efficiencies David E. Cade, J. Jacob Levenson, Robert Cooper, Rafael de la Parra, D. Harry Webb, Alistair D. M. Dove ABSTRACT: Whale sharks (Rhincodon typus) – the largest extant fish species – reside in tropical environments, making them an exception to
Mitochondrial genome of the silky shark
Mitochondrial genome of the silky shark Carcharhinus falciformis from the British Indian Ocean Territory Marine Protected Area Shaili Johri, Taylor K. Chapple, Elizabeth A. Dinsdale, Robert Schallert, Barbara A. Block ABSTRACT: We present the first mitochondrial genome of Carcharhinus falciformis from the Chagos Archipelago in the British Indian Ocean Territory (BIOT) Marine Protected Area (MPA).
First evidence of kleptoparasitism in sharks
Heterospecific foraging associations between reef‐associated sharks: first evidence of kleptoparasitism in sharks Pierre Labourgade, Laurent Ballesta, Charlie Huveneers, Yannis Papastamatiou, Johann Mourier ABSTRACT: Social foraging allows groups of predators to search for, pursue, and capture prey with greater efficiency than using solitary hunting. It can vary in complexity and take many forms ranging from cooperative
Effects of reward magnitude and training frequency on the learning rates and memory retention of the Port Jackson shark
Effects of reward magnitude and training frequency on the learning rates and memory retention of the Port Jackson shark Heterodontus portusjacksoni Dennis D. U. Heinrich, Catarina Vila Pouca, Culum Brown, Charlie Huveneers ABSTRACT: The development of adaptive responses to novel situations via learning has been demonstrated in a wide variety of animal taxa. However, knowledge
Squalus shiraii, a new species of dogfish shark from Japan
Squalus shiraii sp. nov. (Squaliformes, Squalidae), a new species of dogfish shark from Japan with regional nominal species revisited Sarah T. F. L. Viana, Marcelo R. de Carvalho ABSTRACT: A new species of deep-water dogfish shark, Squalus shiraii sp. nov., is described herein as endemic to the tropical waters off Southern Japan. This species has
The historical ecology and demise of the iconic Angelshark in the southern North Sea
The historical ecology and demise of the iconic Angelshark Squatina squatina in the southern North Sea Roeland A. Bom, Monique van de Water, Kees C. J. Camphuysen, Henk W. van der Veer, Anieke van Leeuwen ABSTRACT: There is a growing call to restore the natural richness of the North Sea, but it is often unclear
Report: Non-lethal SMART drumline trial in SW Australia
Results of the non-lethal SMART drumline trial in south-western Australia between 21 February 2019 and 20 February 2020. Fisheries Occasional Publication No. 139, Department of Primary Industries and Regional Development, Western Australia. PDF-DOWNLOAD
Knowledge, Attitudes and Practices in Trinidad and Tobago regarding sharks and shark consumption
An evaluation of the public’s Knowledge, Attitudes and Practices (KAP) in Trinidad and Tobago regarding sharks and shark consumption Lauren Ali, Elisabeth Grey, Delezia Singh, Azad Mohammed, Vrijesh Tripathi, Judith Gobin, Indar Ramnarine ABSTRACT: There is a global lack of data concerning shark consumption trends, consumer attitudes, and public knowledge regarding sharks. This is the
Cartilaginous fishes offer unique insights into the evolution of the nuclear receptor gene repertoire in gnathostomes
Cartilaginous fishes offer unique insights into the evolution of the nuclear receptor gene repertoire in gnathostomes Elza Fonseca, André M. Machado, Nair Vilas-Arrondo, André Gomes-dos-Santos, Ana Veríssimo, Pedro Esteves, Tereza Almeida, Gonçalo Themud, Raquel Ruivo. Montse Pérez, Rute da Fonseca, Miguel M. Santos, Elsa Froufe, Esther Román Marcote, Byrappa Venkatesh, L. Filipe C. Castro ABSTRACT:
Experimental Analysis of Passive Bristling in Air to Enable Mako-Shark-Inspired Separation Control
Experimental Analysis of Passive Bristling in Air to Enable Mako-Shark-Inspired Separation Control Sean P. Devey, Amy W. Lang, James P. Hubner, Jackson A. Morris, Maria L. Habeggar ABSTRACT: Water tunnel studies have demonstrated that the skin of the fast-swimming shortfin mako shark (Isurus oxyrinchus) exhibits a passive method to limit flow separation. Limiting flow separation
Elasmobranch bycatch by prawn trawls in the Gulf of California
Elasmobranch bycatch by prawn trawls in the Gulf of California: First comprehensive analysis and the effect of fish escape devices Karla C. Garcés-García, Javier Tovar-Ávila, Bibiana Vargas-Trejo, Darío A.Chávez-Arrenquín, Terence I. Walker, Robert W. Day ABSTRACT: We report results from the first detailed investigation of elasmobranch bycatch that contains data on species, sex, and length-frequency
Agency in human–shark encounter
Agency in human–shark encounter Leah Gibbs ABSTRACT: Shark bite is exceptionally rare. And yet, representations of human–shark interactions are most often framed as inherently dangerous. The ‘shark attack’ trope has been widely critiqued as sensationalist and misleading. This image creates two further limitations: it offers a one-dimensional representation of sharks and overlooks crucial factors shaping
Annual reproductive cycle of the female brown banded bamboo shark
Annual reproductive cycle of the female brown banded bamboo shark, Chiloscyllium punctatum (Elasmobranchii: Hemiscylliidae) from the Persian Gulf: Morphological and endocrine correlation of reproduction Nadieh Falahiehzadeh, Negin Salamat ABSTRACT: The present study aimed to assess the annual reproductive cycle of female brown banded bamboo shark, Chiloscyllium punctatum , from the Persian Gulf using macroscopic and
Diet Composition and Nutritional Niche Breadth Variability in Juvenile White Sharks
Diet Composition and Nutritional Niche Breadth Variability in Juvenile White Sharks (Carcharodon carcharias) Richard Grainger, Victor M. Peddemors, David Raubenheimer, Gabriel E. Machovsky-Capuska ABSTRACT: Establishing diets and dietary generalism in marine top predators is critical for understanding their ecological roles and responses to environmental fluctuations. Nutrition plays a key mediatory role in species-environment interactions, yet