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Improving sightings-derived residency estimation for whale shark aggregations
Improving sightings-derived residency estimation for whale shark aggregations: A novel metric applied to a global data set Gonzalo Araujo, Ariana Agustines, Steffen S. Bach, Jesse E. M. Cochran, Emilio de la Parra-Galván, Rafael de la Parra-Venegas, Stella Diamant, Alistair Dove, Steve Fox, Rachel T. Graham, Sofia M. Green, Jonathan R. Green, Royale S. Hardenstine, Alex
Aquatic Walking and Swimming Kinematics of Neonate and Juvenile Epaulette Sharks
Aquatic Walking and Swimming Kinematics of Neonate and Juvenile Epaulette Sharks Marianne E Porter, Andrea V Hernandez, Connor R Gervais, Jodie L Rummer ABSTRACT: The epaulette shark, Hemiscyllium ocellatum, is a small, reef-dwelling, benthic shark that—using its paired fins—can walk, both in and out of water. Within the reef flats, this species experiences short periods
Determination of fluorine distribution in shark teeth by laser-induced breakdown spectroscopy
Determination of fluorine distribution in shark teeth by laser-induced breakdown spectroscopy Benjamin T Manard, Christopher J Hintz, C Derrick Quarles, William Burns, N Alex Zirakparvar, Daniel R Dunlap, Toya Beiswenger, Alicia M Cruz-Uribe, Joseph A Petrus, Cole R Hexel ABSTRACT: Quantifying the chemical composition of fast-growing hard tissues in the environment can shed valuable information
Review of catch records of the bigeye thresher shark in the Mediterranean Sea
Review of catch records of the bigeye thresher shark Alopias superciliosus Lowe, 1841 (Lamniformes: Alopiidae) in the Mediterranean Sea: historical and recent data with biological notes Vasiliki Kousteni, Vasilis Resaikos, Magdalene Papatheodoulou, Marios Papageorgiou ABSTRACT: In November 2021, a female bigeye thresher shark was incidentally caught by a pelagic drifting longline off southern Cyprus, corresponding
Length-Based Assessment Methods for the Conservation of a Pelagic Shark, Carcharhinus falciformis from the Tropical Pacific Ocean
Length-Based Assessment Methods for the Conservation of a Pelagic Shark, Carcharhinus falciformis from the Tropical Pacific Ocean Richard Kindong, Ousmane Sarr, Feng Wu, Siquan Tian ABSTRACT: The silky shark, Carcharhinus falciformis is one of the most heavily exploited sharks, being the main by-catch species in both tuna longline and purse-seine fisheries in tropical waters worldwide.
Long-Axis Rotation of Jaws of Bamboo Sharks During Suction Feeding
Long-Axis Rotation of Jaws of Bamboo Sharks (Chiloscyllium plagiosum) During Suction Feeding Bradley R Scott, Elizabeth L Brainerd, Cheryl A D Wilga ABSTRACT: Long-axis rotation (LAR) of the jaws may be an important component of vertebrate feeding mechanisms, as it has been hypothesized to occur during prey capture or food processing across diverse vertebrate groups
The influence of YouTube videos on human tolerance of sharks
The influence of YouTube videos on human tolerance of sharks J. M. Beall, L. D. Pharr, R. von Furstenberg, A. Barber, W. R. Casola, A. Vaughn, M. N. Peterson, L. R. Larson ABSTRACT: Sharks are often depicted in the media as violent killers that actively seek out opportunities to harm humans. This framing may impact
The world’s largest omnivore is a fish
The world’s largest omnivore is a fish M. G. Meekan, P. Virtue, L. Marcus, K. D. Clements, P. D. Nichols, A. T. Revill ABSTRACT: The evolution of very large body size requires a ubiquitous and abundant source of food. In marine environments the largest animals such as whale sharks are secondary consumers that filter feed
Age-Dependent Dispersal and Relatedness in Tiger Sharks
Age-Dependent Dispersal and Relatedness in Tiger Sharks (Galeocerdo cuvier) Margaret A. McClain, Neil Hammerschlag, Austin J. Gallagher, J. Marcus Drymon, R. Dean Grubbs, Tristan L. Guttridge, Matthew J. Smukall, Bryan S. Frazier, Toby S. Daly-Engel ABSTRACT: Understanding dispersal in large marine fauna is necessary for conservation, but movement patterns often vary widely by sex and
A re-examination of the growth of the gummy shark from Queensland
A re-examination of the growth of the gummy shark (Mustelus antarcticus) from Queensland, Australia Matthew J. Campbell, Cassandra L. Rigby ABSTRACT: The gummy shark (Mustelus antarcticus) is endemic to Australia and is the target of commercial fisheries in southern Australia. However, the Queensland population is subjected to low levels of fishing mortality. The present study
Microstructure of the Bonnethead Shark Olfactory Rosette
Microstructure of the Bonnethead Shark (Sphyrna tiburo) Olfactory Rosette Lauren E Simonitis, Christopher D Marshall ABSTRACT: The unusual shape of sphyrnid (hammerhead shark) heads has led to many functional hypotheses of potential sensory advantages and enhanced olfactory performance. Recent investigations into the flow of water within the sphyrnid olfactory chamber demonstrate that this complex structure
Understanding shark-related cognitive vulnerability and its role in shark diving
Understanding shark-related cognitive vulnerability and its role in shark diving: implications for conservation Xiaodi Yan, Maria Knight Lapinski, Meredith Gore, Lindsay Neuberger, Kate Grayson-Sneed ABSTRACT: Negative perceptions and vulnerable feelings about sharks have been one of the greatest barriers to effective shark conservation efforts. This study used a self-report survey of young adults in a
The evolution and development of shark denticles
Teeth outside the mouth: the evolution and development of shark denticles Rory L. Cooper, Ella F. Nicklin, Liam J. Rasch, Gareth J. Fraser ABSTRACT: Vertebrate skin appendages are incredibly diverse. This diversity, which includes structures such as scales, feathers, and hair, likely evolved from a shared anatomical placode, suggesting broad conservation of the early development
First report of a sleeper shark in the western Caribbean
First report of a sleeper shark (Somniosus sp.) in the western Caribbean, off the insular slope of a coral atoll Devanshi Kasana, Hector Daniel Martinez, Omar Faux, Neri Monzon, Elio Guerra, Demian D. Chapman ABSTRACT: A sleeper shark (Somniosus sp.) was captured over the insular slope at Glover’s Reef, a coral atoll in Belize. The
Distribution and population structure of the smooth-hound shark across the Canarian archipelago
Distribution and population structure of the smooth-hound shark, Mustelus mustelus (Linnaeus, 1758), across an oceanic archipelago: Combining several data sources to promote conservation Fernando Espino, José Antonio González, Néstor E Bosch, Francisco J Otero-Ferrer, Ricardo Haroun, Fernando Tuya ABSTRACT: Sharks play a key role in the structure and functioning of marine ecosystems. More ecological information