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,

AUS: Fishing for endangered scalloped hammerhead sharks must stop until broken promises are fixed

Press Release Australian Marine Conservation Society (AMCS) 10. September 2019 —- —- —- —- —- —- —- —- All fishing in Queensland and the Northern Territory for the internationally Endangered scalloped hammerhead shark needs to stop, according to a new report that reveals key protections promised for the species have not been put in place.

AMCS Report on listing of Scalloped Hammerhead shark under the EPBC Act

Review of management arrangements that support the Conservation Dependent listing of Scalloped Hammerhead shark (Sphyrna lewini) under the EPBC Act Dr Nick RaynsFutureCatch ConsultingMay 2019 PDF-DOWNLOAD

Decline in tiger shark population defies expectations

Press Release Griffith UniversityAuthor: Deborah Marshall 10. September 2019 —– —— —– —– —- — New Griffith University research has revealed a 71% decline in tiger sharks across Queensland’s coastline. “This has been particularly rapid in southern regions which is unusual,’’ says lead author Dr Chris Brown from the Australian Rivers Institute. “Tiger sharks are

Life-history traits inform population trends when assessing the conservation status of a declining tiger shark population

Life-history traits inform population trends when assessing the conservation status of a declining tiger shark population Christopher Brown, George Roff ABSTRACT: The assessment of the conservation status of wide ranging species depends on estimates of the magnitude of their population trends. The accuracy of trend estimates will depend on where and how many locations within

Whale shark stranded in East Java

Shark-based tourism presents opportunities for facultative dietary shift in coral reef fish

Shark-based tourism presents opportunities for facultative dietary shift in coral reef fish Joshua A. Drew, Mallory McKeon ABSTRACT: Tourism represents an important opportunity to provide sustainable funding for many ecosystems, including marine systems. Tourism that is reliant on aggregating predator species in a specific area using food provisioning raises questions about the long-term ecological impacts

Deep learning accurately predicts white shark locomotor activity from depth data

Deep learning accurately predicts white shark locomotor activity from depth data Zac Yung-Chun Liu, Jerry H. Moxley, Paul KaniveAdrian C. Gleiss, Thom Maughan, Larry Bird, Oliver J. D. Jewell, Taylor K. Chapple, Tyler Gagne, Connor F. White, Salvador J. Jorgensen ABSTRACT: Background The study of bioenergetics, kinematics, and behavior in free-ranging animals has been transformed

Social preferences and network structure in a population of reef manta rays

Social preferences and network structure in a population of reef manta rays Robert J. Y. Perryman, Stephanie K. Venables, Ricardo F. Tapilatu, Andrea D. Marshall, Culum Brown, Daniel W. Franks ABSTRACT: Understanding how individual behavior shapes the structure and ecology of populations is key to species conservation and management. Like many elasmobranchs, manta rays are

Protection from illegal fishing and shark recovery restructures mesopredatory fish communities

Protection from illegal fishing and shark recovery restructures mesopredatory fish communities on a coral reef Conrad W. Speed, Matthew J. Rees, Katherine Cure, Brigit Vaughan, Mark G. Meekan ABSTRACT: The recovery of communities of predatory fishes within a no‐take marine reserve after the eradication of illegal fishing provides an opportunity to examine the role of