September, 2021

Fossilized shark teeth seized by customs in Philippines

Fossilized shark teeth seized by customs in Philippines

Press Release Philippine Bureau of Customs 06. September 2021 — — — — — — — BOC Cebu-Subport of Mactan Seizes Over Four Kilograms of Shark Teeth The Bureau of Customs Cebu-Subport of Mactan seized last Tuesday, August 31, a parcel containing 4.98 kilograms of extracted Shark Teeth misdeclared as Plastic Components for Fashion Accessories.

Numerical Abilities in Grey Bamboo Sharks and Ocellate River Stingrays

Numerical Abilities in Grey Bamboo Sharks and Ocellate River Stingrays

Counting on Numbers—Numerical Abilities in Grey Bamboo Sharks and Ocellate River Stingrays Nils Kreuter, Nele Christofzik, Carolin Niederbremer, Janik Bollé, Vera Schluessel ABSTRACT: Over the last decade, studies examining the cognitive abilities of fish have increased, using a broad range of approaches. One of the foci has been to test the ability of fish to

Overfishing drives over one-third of all sharks and rays toward a global extinction crisis

Overfishing drives over one-third of all sharks and rays toward a global extinction crisis

Overfishing drives over one-third of all sharks and rays toward a global extinction crisis Nicholas K. Dulvy, Nathan Pacoureau, Cassandra L. Rigby, Riley A. Pollom, Rima W. Jabado, David A. Ebert, Brittany Finucci, Caroline M. Pollock, Jessica Cheok, Danielle H. Derrick, Katelyn B. Herman, C. Samantha Sherman, Wade J. Van der Wright, Julia M. Lawson,

Environmental DNA reduces the phantom diversity of sharks and rays in turbid marine habitats

Environmental DNA reduces the phantom diversity of sharks and rays in turbid marine habitats

Seeing through sedimented waters: environmental DNA reduces the phantom diversity of sharks and rays in turbid marine habitats Yin Cheong Aden Ip, Jia Jin Marc Chang, Kelvin K P Lim, Zeehan Jaafar, Benjamin J Wainwright, Danwei Huang ABSTRACT: Background: Sharks and rays are some of the most threatened marine taxa due to the high levels

The Subtle Impacts of Tourist Provisioning on the Social Behavior of Tiger Sharks

The Subtle Impacts of Tourist Provisioning on the Social Behavior of Tiger Sharks

Social Network Analysis Reveals the Subtle Impacts of Tourist Provisioning on the Social Behavior of a Generalist Marine Apex Predator Jacoby David M. P., Fairbairn Bethany S., Frazier Bryan S., Gallagher Austin J., Heithaus Michael R., Cooke Steven J., Hammerschlag Neil ABSTRACT: Shark dive ecotourism is a lucrative industry in many regions around the globe.

Differential horizontal migration patterns of two male salmon sharks tagged in the Bering Sea

Differential horizontal migration patterns of two male salmon sharks tagged in the Bering Sea

Differential horizontal migration patterns of two male salmon sharks (Lamna ditropis) tagged in the Bering Sea Sabrina Garcia, Cindy A. Tribuzio, Andrew C. Seitz, Michael B. Courtney, Julie K. Nielsen, Jim M. Murphy, Dion S. Oxman ABSTRACT: Background The salmon shark (Lamna ditropis) is a widely distributed apex predator in the North Pacific Ocean. Many

Passive Prey Discrimination in Surface Predatory Behaviour of Bait-Attracted White Sharks from Gansbaai

Passive Prey Discrimination in Surface Predatory Behaviour of Bait-Attracted White Sharks from Gansbaai

Passive Prey Discrimination in Surface Predatory Behaviour of Bait-Attracted White Sharks from Gansbaai, South Africa Primo Micarelli, Federico Chieppa, Antonio Pacifico, Enrico Rabboni, Francesca Romana Reinero ABSTRACT: Between the years 2008 and 2013, six annual research expeditions were carried out at Dyer Island (Gansbaai, South Africa) to study the surface behaviour of white sharks in

Phylogeography and population genetics of the cryptic bonnethead shark Sphyrna aff. tiburo

Phylogeography and population genetics of the cryptic bonnethead shark Sphyrna aff. tiburo

Phylogeography and population genetics of the cryptic bonnethead shark Sphyrna aff. tiburo in Brazil and the Caribbean inferred from mitochondrial DNA markers Cindy Gonzalez, Bautisse Postaire, Rodrigo R Domingues, Kevin A Feldheim, Susana Caballero, Demian Chapman ABSTRACT: Resolving the identity, phylogeny, and distribution of cryptic species within species complexes is an essential precursor to management.

First record of the mating system in the grey smoothhound shark

First record of the mating system in the grey smoothhound shark

First record of the mating system in the grey smoothhound shark (Mustelus californicus) Alexis O. Tárula-Marín & Nancy C. Saavedra-Sotelo ABSTRACT: Mating systems constitute an important biological characteristic that must be evaluated in commercially important species due to the effects of these systems on population growth rates and genetic diversity levels, which in turn determine

WA Shark patrols underway as State Budget provides funding certainty

WA Shark patrols underway as State Budget provides funding certainty

Media Release Department of Fisheries, Western Australia 04. September 2021 — — — — — — — — Surf Life Saving WA shark mitigation services funded until 2024-25 in State Budget Weekend patrols begin for Perth and South-West helicopters this weekend $12 million allocation in State Budget providing comprehensive beach and aerial patrols, integrated communication

Functionality and Effectiveness of Marine Protected Areas in Southeastern Brazilian Waters for Demersal Elasmobranchs

Functionality and Effectiveness of Marine Protected Areas in Southeastern Brazilian Waters for Demersal Elasmobranchs

Functionality and Effectiveness of Marine Protected Areas in Southeastern Brazilian Waters for Demersal Elasmobranchs Thamíris C. Karlovic, Renata R. Gomes, Paulo C. Paiva, Elizabeth A. Babcock, June F. Dias ABSTRACT: Ensuring the efficacy of Marine Protected Areas (MPAs) requires that adequate management strategies be implemented according to the MPA’s objectives. Within the scope of species

DNA barcoding ray wings in Greece detects protected species

DNA barcoding ray wings in Greece detects protected species

Flying under the radar: DNA barcoding ray wings in Greece detects protected species and umbrella labelling terms Zoe Giagkazoglou, Andrew M. Griffiths, Anastasia Imsiridou, Archontia Chatzispyrou, Konstantinos Touloumis, Jake L. Hebb, Dimitra Mylona, Anna K. Malamidou, Evangelia D. Apostolidi, Ioannis Ε. Batjakas, Chrysoula Gubili ABSTRACT: Mislabeling of seafood products and marketing of protected species remains

Bio-Ecological Features Update on Eleven Rare Cartilaginous Fish in the Central-Western Mediterranean Sea

Bio-Ecological Features Update on Eleven Rare Cartilaginous Fish in the Central-Western Mediterranean Sea

Bio-Ecological Features Update on Eleven Rare Cartilaginous Fish in the Central-Western Mediterranean Sea as a Contribution for Their Conservation Mulas A, Bellodi A, Carbonara P, Cau A, Marongiu MF, Pesci P, Porcu C, Follesa MC. ABSTRACT: Cartilaginous fish are commonly recognized as key species in marine ecosystems for their fundamental ecological role as top predators.

Nation-wide assessment of the distribution and population size of the data-deficient nurse shark

Nation-wide assessment of the distribution and population size of the data-deficient nurse shark

Nation-wide assessment of the distribution and population size of the data-deficient nurse shark (Ginglymostoma cirratum) Garzon F, Graham RT, Baremore I, Castellanos D, Salazar H, Xiu C, et al. ABSTRACT: The study presents the first national assessment of a nurse shark (Ginglymostoma cirratum) population, conducted using a combination of transect surveys and baited remote underwater

Reef manta rays forage on tidally driven, high density zooplankton patches in Hanifaru Bay, Maldives

Reef manta rays forage on tidally driven, high density zooplankton patches in Hanifaru Bay, Maldives

Reef manta rays forage on tidally driven, high density zooplankton patches in Hanifaru Bay, Maldives Armstrong AO, Stevens GMW, Townsend KA, Murray A, Bennett MB, Armstrong AJ, Uribe-Palomino J, Hosegood P, Dudgeon CL, Richardson AJ. ABSTRACT: Manta rays forage for zooplankton in tropical and subtropical marine environments, which are generally nutrient-poor. Feeding often occurs at