Article
Agriculture, Dairy & Animal Science
Airam Guerra-Marrero, Antonio Bonino-Perez, Ana Espino-Ruano, Lorena Couce-Montero, David Jimenez-Alvarado, Jose J. Castro
Summary: This study investigated the status and population characteristics of Percnon gibbesi in three areas of Gran Canaria Island from July 2020 to December 2021. With a sample size of 999 individuals, the reproductive season and length-weight relationships were established. CPEU analysis revealed that the abundance of Percnon gibbesi in the three areas did not conform to the catch quotas set by the Canary Islands Fisheries Law.
Article
Environmental Sciences
Pedro Afonso, Miguel Gandra, Goncalo Graca, Bruno Macena, Frederic Vandeperre, Jorge Fontes
Summary: This study used acoustic and satellite telemetry to investigate the population of juvenile smooth hammerhead sharks in the Azores archipelago and confirmed the existence of nurseries in this area. The sharks showed a preference for using coastal nurseries during the day and venturing further offshore at night, possibly to feed. These findings highlight the importance of understanding the ecological behaviors and implementing conservation measures for the smooth hammerhead shark.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Environmental Sciences
Lindsay A. French, Stephen R. Midway, David H. Evans, George H. Burgess
Summary: This study utilized nearly 50 years of global shark attack data to investigate the relationship between shark attacks and moon phase. The findings showed that shark attacks were more likely to occur when lunar illumination was >50%, and less likely when lunar illumination was <50%.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Environmental Sciences
Richard D. Pillans, Wayne Rochester, Russell C. Babcock, Damian P. Thomson, Michael D. E. Haywood, Mathew A. Vanderklift
Summary: The study investigated the movement patterns of lemon sharks using acoustic telemetry along the Ningaloo coast of Australia, revealing longer residency of adults in known nursery areas, with female sharks shifting their core home range further offshore during winter months. Sexual segregation was observed within core areas, with males departing earlier than females. Highly directional and rapid movements correlated with parturition and mating periods were detected, emphasizing the importance of movement data for conservation efforts.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Multidisciplinary Sciences
James P. Tucker, Isaac R. Santos, Brendan P. Kelaher, Marcel Green, Graeme F. Clark, Paul A. Butcher
Summary: The perceived and real threat of shark bites have significant impacts on both health and economy. This study assesses the changing odds of surviving an unprovoked shark bite in Australia over 200 years. It reveals that survivability rates vary for different shark species and are influenced by environmental and anthropogenic factors.
SCIENTIFIC REPORTS
(2022)
Article
Environmental Sciences
Patricia S. Albano, Chris Fallows, Monique Fallows, Lacey H. Williams, Taryn Murray, Oliver Sedgwick, Neil Hammerschlag
Summary: The coastal waters of South Africa are home to a diverse range of vulnerable shark species. The De Hoop Marine Protected Area in the Western Cape Province provides some protection, but commercial fishing, including shark longlining, still poses a threat. A study on smooth hammerhead sharks found that they heavily rely on unprotected waters adjacent to the protected area, making them vulnerable to commercial fishing.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Environmental Sciences
Nicolas Lubitz, Katya Abrantes, Kevin Crook, Leanne M. Currey-Randall, Andrew Chin, Marcus Sheaves, Richard Fitzpatrick, Ana Barbosa Martins, Stacy Bierwagen, Ingo B. Miller, Adam Barnett
Summary: Information on how the trophic ecology of predators shapes their movement patterns and space-use is fundamental to understanding ecological processes. Researchers conducted a study on the great hammerhead shark to investigate the relationship between prey preference and availability with movement and home ranges. The results showed that the species exhibited limited dispersal and small home ranges due to their specialization in feeding on stingrays. The study also compared the findings to the bull shark, which relied on pelagic food webs. The specialized foraging behavior of the great hammerhead shark indicates its role as an apex predator in shallow, inshore habitats.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Biodiversity Conservation
Ross G. Dwyer, Michaela Rathbone, Deborah L. Foote, Mike Bennett, Paul A. Butcher, Nicholas M. Otway, Brett M. Louden, Fabrice R. A. Jaine, Craig E. Franklin, Carley Kilpatrick
Summary: Networks of small no-take marine protected areas are an effective approach to protect mobile marine species. A study on grey nurse sharks in three Australian MPAs revealed that the sharks used the areas differently, with one MPA serving as a year-round gestation site, while the other two were transitory aggregation sites. The sharks had long-range migratory movements, connecting different temperate waters along the coastline. The study highlights the importance of monitoring and managing these species to ensure their protection.
BIOLOGICAL CONSERVATION
(2023)
Article
Biodiversity Conservation
Nicholas Dunn, David J. Curnick, Chris Carbone, Aaron B. Carlisle, Taylor K. Chapple, Rosalie Dowell, Francesco Ferretti, David M. P. Jacoby, Robert J. Schallert, Margaux Steyaert, David M. Tickler, Michael J. Williamson, Barbara A. Block, Vincent Savolainen
Summary: eDNA methods are increasingly used to detect shark species, but they have not yet become routine monitoring techniques for elasmobranch species. This study developed species-specific eDNA assays for grey reef shark (Carcharhinus amblyrhynchos) and silvertip shark (Carcharhinus albimarginatus). The results showed that eDNA detections were reduced and sporadic around the northern atolls under high pressure from illegal fishing, while detections were ubiquitous and consistent around the highly protected atoll Diego Garcia.
ECOLOGICAL INDICATORS
(2023)
Article
Environmental Sciences
Lucas P. Griffin, Grace A. Casselberry, Kristen M. Hart, Adrian Jordaan, Sarah L. Becker, Ashleigh J. Novak, Bryan M. DeAngelis, Clayton G. Pollock, Ian Lundgren, Zandy Hillis-Starr, Andy J. Danylchuk, Gregory B. Skomal
Summary: Resource selection functions (RSFs) are widely used in terrestrial ecology but have not been extensively applied in marine systems. By combining RSFs with machine learning algorithms in acoustic telemetry data, new insights can be gained to prioritize habitat conservation in marine environments. This approach can be valuable for marine ecologists and resource managers in guiding conservation efforts and achieving high prediction accuracy.
FRONTIERS IN MARINE SCIENCE
(2021)
Article
Environmental Sciences
Paul E. Kanive, Jay J. Rotella, Taylor K. Chapple, Scot D. Anderson, Mauricio Hoyos-Padilla, Abbott Peter Klimley, Felipe Galvan-Magana, Samantha Andrzejaczek, Barbara A. Block, Salvador J. Jorgensen
Summary: Marine animals often move beyond national borders and exclusive economic zones, making it necessary to have trans-boundary management that spans multiple national jurisdictions. In this study, white sharks' connectivity between two main aggregation regions was analyzed. The study found that nearly one in ten tagged white sharks were detected in both regions, but the annual rate of trans-regional movement was low. Sub-adults were more likely to move between regions and sharks were more likely to move from Guadalupe Island to central California. This study provides important information for future international management and assessment of the northeastern Pacific white shark population.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Environmental Sciences
John Ugoretz, Elizabeth A. Hellmers, Julia H. Coates
Summary: Many reports have been conducted to categorize the frequency, circumstances, and causes of interactions between sharks and humans, using the inaccurate term "attack." In contrast, the California Department of Fish and Wildlife employs the term "incident" to describe interactions where sharks touch a person, their board, or kayak without provocation, with or without injury. This study created a comprehensive database of shark incidents in California, verifying and updating past records, examining the frequency of incidents, and comparing similarities and differences in circumstances. Between 1950 and 2021, 201 incidents were verified in California waters, with 107 causing injury and 15 resulting in fatalities. The majority of incidents involved White Sharks, contrary to previous reports of their concentration in northern California. Instead, incidents occurred throughout the state, with higher numbers in Southern California. Despite the overall increase in reported incidents, the number of incidents resulting in injuries or fatalities remains low. Incidents were found to be more frequent during the summer and fall months, but not significantly influenced by the full moon, dawn, or dusk.
FRONTIERS IN MARINE SCIENCE
(2022)
Article
Multidisciplinary Sciences
Junichi Takagi, Hirotaka Kanazawa, Kotaro Ichikawa, Hiromichi Mitamura
Summary: A simple hyperbolic positioning method without solving simultaneous quadratic equations was proposed and the mathematical concept of a pencil was introduced. The study focused on intersection calculations of hyperbolas and compared different methods regarding correctness, accuracy, and speed of positioning.
Article
Multidisciplinary Sciences
Tamar Poppelier, Jana Bonsberger, Boris Woody Berkhout, Renee Pollmanns, Vera Schluessel
Summary: This study explores the acoustic discrimination abilities of grey bamboo sharks and finds that they can learn tasks through both visual and acoustic stimuli. The results show that grey bamboo sharks can distinguish between two sounds within a frequency range of 90-210 Hz, with a minimum frequency difference of 20-30 Hz leading to behavioral changes. Research on shark acoustic abilities is crucial for the management and conservation efforts of sharks.
SCIENTIFIC REPORTS
(2022)
Article
Environmental Sciences
Maria Rondon-Medicci, Luis G. Cardoso, Bruno Mourato, L. Dalla Rosa
Summary: The aim of this study was to analyze the distribution and abundance patterns of blue sharks in the southwestern Atlantic Ocean and their relationship with environmental factors. The models showed that salinity, chlorophyll-a, and temperature influenced the distribution of blue sharks. The catch per unit of fishing effort (CPUE) and the probability of presence increased mainly between March and August. Additionally, ocean depth, sea surface height, ocean fronts, and slope also influenced the CPUE and probability of occurrence of blue sharks.
MARINE ENVIRONMENTAL RESEARCH
(2023)
Article
Marine & Freshwater Biology
M. L. Dicken, H. Winker, M. J. Smale, G. Cliff
AFRICAN JOURNAL OF MARINE SCIENCE
(2018)
Article
Multidisciplinary Sciences
Christoph A. Rohner, Anthony J. Richardson, Fabrice R. A. Jaine, Michael B. Bennett, Scarla J. Weeks, Geremy Cliff, David P. Robinson, Katie E. Reeve-Arnold, Simon J. Pierce
Article
Marine & Freshwater Biology
Claudia Junge, Stephen C. Donnellan, Charlie Huveneers, Corey J. A. Bradshaw, Alexis Simon, Michael Drew, Clinton Duffy, Grant Johnson, Geremy Cliff, Matias Braccini, Scott C. Cutmore, Paul Butcher, Rory McAuley, Vic Peddemors, Paul Rogers, Bronwyn M. Gillanders
Article
Marine & Freshwater Biology
Stephanie Plon, Guilherme Frainer, Andrew Wedderburn-Maxwell, Geremy Cliff, Stefan Huggenberger
MARINE MAMMAL SCIENCE
(2019)
Article
Ecology
Agathe Pirog, Sebastien Jaquemet, Virginie Ravigne, Geremy Cliff, Eric Clua, Bonnie J. Holmes, Nigel E. Hussey, John E. G. Nevill, Andrew J. Temple, Per Berggren, Laurent Vigliola, Helene Magalon
ECOLOGY AND EVOLUTION
(2019)
Article
Fisheries
David Guyomard, Christophe Perry, Pierre Ugo Tournoux, Geremy Cliff, Victor Peddemors, Sebastien Jaquemet
FISHERIES RESEARCH
(2019)
Article
Ecology
Agathe Pirog, Virginie Ravigne, Michael C. Fontaine, Adrien Rieux, Aude Gilabert, Geremy Cliff, Eric Clua, Ryan Daly, Michael R. Heithaus, Jeremy J. Kiszka, Philip Matich, John E. G. Nevill, Amy F. Smoothey, Andrew J. Temple, Per Berggren, Sebastien Jaquemet, Helene Magalon
ECOLOGY AND EVOLUTION
(2019)
Article
Marine & Freshwater Biology
J. B. Pfaller, A. N. Palau, P. D. Agamboue, M. Barret, S. Ciccione, G. Cliff, A. Formia, J. C. Manfoumbi, A. Marco, G-P Sounguet, A. D. Tucker
AFRICAN JOURNAL OF MARINE SCIENCE
(2019)
Article
Fisheries
D. Guyomard, K. A. Lee, C. Perry, S. Jaquemet, G. Cliff
FISHERIES RESEARCH
(2020)
Article
Environmental Sciences
Ryan Daly, Denham Parker, Geremy Cliff, Gareth L. Jordaan, Nkabi Nomfundo, Rhett H. Bennett, Bruce Q. Mann
Summary: The white-spotted wedgefish is a critically endangered shark-like ray in the Western Indian Ocean region. Data from fishing activities on the east coast of South Africa show significant population declines, indicating a need for conservation efforts.
AQUATIC CONSERVATION-MARINE AND FRESHWATER ECOSYSTEMS
(2021)
Article
Multidisciplinary Sciences
Jack A. Cooper, John R. Hutchinson, David C. Bernvi, Geremy Cliff, Rory P. Wilson, Matt L. Dicken, Jan Menzel, Stephen Wroe, Jeanette Pirlo, Catalina Pimiento
Summary: This study used a well-preserved fossil to create a three-dimensional model of the extinct Megalodon shark's body and inferred its movement and feeding ecology. The research found that Megalodon could swim faster than any modern shark species and consume prey the size of modern apex predators. Its preference for large prey helped reduce competition and provided sustained energy for long migrations. The study suggests that Megalodon played an important ecological role as a transoceanic superpredator and its extinction had significant impacts on global nutrient transfer and trophic food webs.
Article
Ecology
Floriaan Devloo-Delva, Christopher P. Burridge, Peter M. Kyne, Juerg M. Brunnschweiler, Demian D. Chapman, Patricia Charvet, Xiao Chen, Geremy Cliff, Ryan Daly, J. Marcus Drymon, Mario Espinoza, Daniel Fernando, Laura Garcia Barcia, Kerstin Glaus, Blanca I. Gonzalez-Garza, Michael I. Grant, Rasanthi M. Gunasekera, Sebastian Hernandez, Susumu Hyodo, Rima W. Jabado, Sebastien Jaquemet, Grant Johnson, James T. Ketchum, Helene Magalon, James R. Marthick, Frederik H. Mollen, Stefano Mona, Gavin J. P. Naylor, John E. G. Nevill, Nicole M. Phillips, Richard D. Pillans, Bautisse D. Postaire, Amy F. Smoothey, Katsunori Tachihara, Bree J. Tillet, Jorge A. Valerio-Vargas, Pierre Feutry
Summary: In this study, the population structure of the Bull Shark was assessed globally for the first time. The results revealed reproductive isolation between and across ocean basins, with distinct island populations in Japan and Fiji. The Bull Sharks maintain gene flow through shallow coastal waters as dispersal corridors, but large oceanic distances and historical land-bridges act as barriers. Protecting these insular populations of Bull Sharks is crucial for ecosystem stability and functioning.
ECOLOGY AND EVOLUTION
(2023)
Article
Marine & Freshwater Biology
R. Daly, G. L. Jordaan, D. Parker, G. Cliff, N. Nkabi, R. Kyle, S. T. Fennessy, B. Q. Mann
Summary: This study investigated the movements, reproduction, and population status of the diamond ray Gymnura natalensis in South Africa. The findings showed that the species mainly inhabits the east coast of South Africa and despite the low number of individuals tagged, the population trend is stable to increasing, suggesting a classification of Least Concern.
AFRICAN JOURNAL OF MARINE SCIENCE
(2022)
Review
Environmental Sciences
Charlie Huveneers, Kirin Apps, Edgar E. Becerril-Garcia, Barry Bruce, Paul A. Butcher, Aaron B. Carlisle, Taylor K. Chapple, Heather M. Christiansen, Geremy Cliff, Tobey H. Curtis, Toby S. Daly-Engel, Heidi Dewar, Matt L. Dicken, Michael L. Domeier, Clinton A. J. Duffy, Richard Ford, Malcolm P. Francis, Georgia C. A. French, Felipe Galvan-Magana, Emiliano Garcia-Rodriguez, Enrico Gennari, Brittany Graham, Barry Hayden, Edgar Mauricio Hoyos-Padilla, Nigel E. Hussey, Oliver J. D. Jewell, Salvador J. Jorgensen, Alison A. Kock, Christopher G. Lowe, Kady Lyons, Lauren Meyer, Gregg Oelofse, Erick C. Onate-Gonzalez, Herman Oosthuizen, John B. O'Sullivan, Kristopher Ramm, Gregory Skomal, Sean Sloan, Malcolm J. Smale, Oscar Sosa-Nishizaki, Emilio Sperone, Elena Tamburin, Alison V. Towner, Michelle A. Wcisel, Kevin C. Weng, Jonathan M. Werry
FRONTIERS IN MARINE SCIENCE
(2018)
Article
Ecology
Shannon Corrigan, Andrew D. Lowther, Luciano B. Beheregaray, Barry D. Bruce, Geremy Cliff, Clinton A. Duffy, Alan Foulis, Malcolm P. Francis, Simon D. Goldsworthy, John R. Hyde, Rima W. Jabado, Dovi Kacev, Lindsay Marshall, Gonzalo R. Mucientes, Gavin J. P. Naylor, Julian G. Pepperell, Nuno Queiroz, William T. White, Sabine P. Wintner, Paul J. Rogers
FRONTIERS IN ECOLOGY AND EVOLUTION
(2018)
