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Large sharks exhibit varying behavioral responses to major hurricanes
Large sharks exhibit varying behavioral responses to major hurricanes L.F.G. Gutowsky, James Rider, R.P.Roemer, A.J. Gallagher, M.R. Heithause, S.J. Cooke, N. Hammerschlag ABSTRACT: Under global climate change, storm events are predicted to increase in strength and frequency. Although aquatic animals can be affected by acute natural disturbances, information on the immediate consequences of these weather
Significant differences in trophic niches of smooth hammerhead
Stable isotope and fatty acid analyses reveal significant differences in trophic niches of smooth hammerhead Sphyrna zygaena (Carcharhiniformes) among three nursery areas in northern Humboldt Current System Eduardo Segura-Cobeña, Joanna Alfaro-Shigueto, Jeffrey Mangel, Angel Urzua, Konrad Górski ABSTRACT: Fishery pressure on nursery areas of smooth hammerhead in northern Peruvian coast have become a serious threat
Annual abundance and population growth rates of white sharks off central California
Estimates of regional annual abundance and population growth rates of white sharks off central California Paul E. Kanive, Jay J. Rotella, Taylor K. Chapple, Scot D. Anderson, Timothy D. White, Barbara A. Block, Salvador J. Jorgensen ABSTRACT: Determining population trends is critical for evaluating management actions and prioritizing species protections. In this study, we used
Sightings trends and behaviour of manta rays in Fernando de Noronha Archipelago, Brazil
Sightings trends and behaviour of manta rays in Fernando de Noronha Archipelago, Brazil Nayara Bucair, Stephanie K. Venables, Ana Paula Balboni, Andrea D. Marshall ABSTRACT: Despite substantial progress in mobulid research over the past decade, knowledge gaps in manta ray ecology and behaviour remain, particularly in the South Atlantic Ocean. Opportunistic photographic and video records
Lufthansa Group and BASF roll out sharkskin technology
Published on 11 May, 2021 at 11:15 in General News | Viewed times | No Comments
Joint News Release BASFLufthansa Cargo AGLufthansa Technik 03. May 2021 — — — — — — — Nature as a role model: Lufthansa Group and BASF roll out sharkskin technology – From 2022, Lufthansa Cargo will equip all Boeing 777 freighters with AeroSHARK – Innovative surface technology from Lufthansa Technik and BASF improves fuel efficiency
Shark conservation and blanket bans in the eastern Pacific Ocean
Shark conservation and blanket bans in the eastern Pacific Ocean Gustavo A. Castellanos‐Galindo, Pilar Herrón, Andrés F. Navia, Hollie Booth ABSTRACT: Sharks are one of the most threatened marine animals, with fishing identified as the prime human activity responsible for population declines. The tropical eastern Pacific, a biogeographic region spanning the coastal areas from Mexico
Association behavior between sand tiger sharks and round scad is driven by mesopredators
Association behavior between sand tiger sharks and round scad is driven by mesopredators Nicholas C. Coleman, Erin J. Burge ABSTRACT: In marine systems, behaviorally-mediated indirect interactions between prey, mesopredators, and higher trophic-level, large predators are less commonly investigated than other ecologic interactions, likely because of inherent difficulties associated with making observations. Underwater videos (n = 216) from
Effects of food provisioning on the daily ration and dive site use of great hammerhead sharks
Effects of food provisioning on the daily ration and dive site use of great hammerhead sharks, Sphyrna mokarran Vital Heim, Félicie Dhellemmes, Matthew J. Smukall, Samuel H. Gruber, Tristan L. Guttridge ABSTRACT: Wildlife provisioning is popular, economically valuable and a rapidly growing part of marine tourism, with great potential to benefit conservation. However, it remains
New guides to bolster shark and ray research and species identification in Southeast Asia
Press Release Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) 27. April 2021 — — — — — — — The CITES Secretariat and the Secretariat of the Southeast Asian Fisheries Development Center (SEAFDEC) have jointly published two guides to facilitate the identification of shark and ray species common in
Media Statement on concerns around potential amendments to the shark ban in the Maldives
Published on 28 Apr, 2021 at 15:46 in Conservation & Fishery, Fishery Management | Viewed times | No Comments
Press Release Ministry of Fisheries, Marine Resources and Agriculture Male’, Republic of Maldives 20. April 2021 — — — — — — — — Following serious concerns regarding the status of shark stocks in Maldivian waters, as well as the Indian Ocean in general, the Maldives adopted the Precautionary Approach and imposed a ban on
Telomere Length in the Deep-Sea Shark, Etmopterus granulosus
An Exploratory Study of Telomere Length in the Deep-Sea Shark, Etmopterus granulosus Melissa C. Nehmens, Rebecca M. Varney, Alexis M. Janosik, David A. Ebert ABSTRACT: The history of elasmobranch ageing highlights the difficulty of age estimation in animals lacking ossified structures. Ageing techniques are numerous, yet all are limited by difficulties of validation and verification
Foraging depth depicts resource partitioning and contamination level in a pelagic shark assemblage
Foraging depth depicts resource partitioning and contamination level in a pelagic shark assemblage: Insights from mercury stable isotopes Lucien Besnard, Gaël Le Croizier, Felipe Galván-Magaña, David Point, Edouard Kraffe, James Ketchum, Raul Octavio Martinez Rincon, Gauthier Schaal ABSTRACT: The decline of shark populations in the world ocean is affecting ecosystem structure and function in an
04/20/21-NON-LIFE THREATING APPARENT SHARK INCIDENT ON HAWAI‘I ISLAND
Published on 22 Apr, 2021 at 5:00 in Attacks & Incidents | Viewed times | No Comments
News Release DEPARTMENT OF LAND AND NATURAL RESOURCES 20. April 2021 — — — — — — — (HONOLULU) – First responders, officers from the DLNR Division of Conservation and Resources Enforcement (DOCARE) and personnel from the DLNR Division of Aquatic Resources are responding to a report of a non-fatal shark incident near the Kukio
14.5 million-year-old shark-attack on manatee documents oldest predator-prey interaction
Published on 22 Apr, 2021 at 4:14 in Research | Viewed times | No Comments
Press Release Naturhistorisches Museum Wien 06. April 2021 — — — — — — — Researcher of the NHM Vienna identified a fossilized skeleton of a manatee. The bones bear rare fossil bite marks and teeth of a tiger shark were also found next to the skeleton. What do these fossils tell us about life
Tiger shark feeding on sirenian
Tiger shark feeding on sirenian – first fossil evidence from the middle Miocene of the Styrian Basin (Austria) Iris Feichtinger, Ingomar Fritz & Ursula B. Göhlich ABSTRACT: Based on a shark-bitten partial skeleton of an immature sirenian (Metaxytherium cf. medium) from the middle Miocene of the Styrian Basin (Austria), we report on the oldest predator–prey