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Unintended effects of single-species fisheries management
Unintended effects of single-species fisheries management Mariana Tolotti, Patrice Guillotreau, Fabien Forget, Manuela Capello, Laurent Dagorn ABSTRACT: Ecosystem-based management is widely recognized as the path to achieve sustainability of ecosystem services. Tuna Fisheries Management Organizations have incorporated an ecosystem approach into their mandate, but their decision-making process essentially relies on individual stock assessments. This study
First recorded case of leucism in the velvet belly lantern shark
First recorded case of leucism in the velvet belly lantern shark Etmopterus spinax (Squaliformes: Etmopteridae) Juan Carlos Arronte, Ana Antolínez, Rafael Bañón, José Rodríguez-Gutiérrez, Juan José Ortíz, Juan Manuel Martínez ABSTRACT: The capture of a female specimen of the velvet belly lantern shark Etmopterus spinax with abnormal skin coloration is reported. The specimen was captured
Changing trends: Beliefs and attitudes toward sharks and implications for conservation
Changing trends: Beliefs and attitudes toward sharks and implications for conservation Joao Neves, Terran McGinnis, Jean-Christophe Giger ABSTRACT: As history shows, and contrary to modern western society’s feelings, sharks were once respected and worshipped. Sensationalized media coverage negatively impacts the public’s perception of sharks and lack of information about management and conservation options negatively impacts
A Fine Developmental Timeline of Kong Skate
How the Skate Embryo Develops: A Fine Developmental Timeline of Kong Skate Okamejei kenojei (Müller & Henle, 1841) Gao Guang, Xiao Zhizhong, Ma Yuting, Chen Xiao, Xiao Yongshuang, Li Jun ABSTRACT: Cartilaginous fishes, as an important group of jawed vertebrates, hold great promise for improving our understanding of vertebrate evolution. Previous studies have established a
Grouping behaviour impacts on the parasitic pressure and squamation of sharks
Grouping behaviour impacts on the parasitic pressure and squamation of sharks Humberto G. Ferrón and Jose F. Palacios-Abella ABSTRACT: The evolution of grouping behaviour involves a complex trade-off of benefits and costs. Among the latter, an increase in the risk of parasitic transmission is a well-documented phenomenon that has likely promoted the evolution of defensive
Shark detection and classification with machine learning
Shark detection and classification with machine learning J. Jenrette, Z. Y.-C. Liu, P. Chimote, T. Hastie, E. Fox, F. Ferrettia ABSTRACT: Suitable shark conservation depends on well-informed population assessments. Direct methods such as scientific surveys and fisheries monitoring are adequate for defining population statuses, but species-specific indices of abundance and distribution coming from these sources
Residency, movement patterns, behavior and demographics of reef manta rays in Komodo National Park
Residency, movement patterns, behavior and demographics of reef manta rays in Komodo National Park Germanov ES, Pierce SJ, Marshall AD, Hendrawan IG, Kefi A, Bejder L, Loneragan N. ABSTRACT: BackgroundThe reef manta ray (Mobula alfredi) is a globally threatened species and an iconic tourist attraction for visitors to Indonesia’s Komodo National Park (NP). In 2013,
Scientific response to a cluster of shark bites
Scientific response to a cluster of shark bites Adam Barnett, Richard Fitzpatrick, Michael Bradley, Ingo Miller, Marcus Sheaves, Andrew Chin, Bethany Smith, Amy Diedrich, Jonah Lee Yick, Nicolas Lubitz, Kevin Crook, Carlo Mattone, Mike B. Bennett, Leah Wojtach, Kátya Abrantes ABSTRACT: 1. Shark bites are of high public concern globally. Information on shark occurrence and
Functional and phylogenetic diversity of sharks in the Northeastern Pacific
Functional and phylogenetic diversity of sharks in the Northeastern Pacific Zachary A. Siders, Lauren B. Trotta, Fabio P. Caltabellotta, Katherine B. Loesser, Benjamin Baiser, Robert N. M. Ahrens ABSTRACT: AimThe expansive spatial scale of pelagic communities and the difficulty in acquiring pelagic species’ functional traits have stymied an understanding of marine community dynamics. We assembled
DNA barcoding of traded shark fins in Peninsular Malaysia
DNA barcoding of traded shark fins in Peninsular Malaysia Ying Giat Seah, Caroline Kibat, Simon Hew & Benjamin J. Wainwright ABSTRACT: Southeast Asia is a major shark product trade hub, and many of the world’s largest shark product selling markets are located in the region. Malaysia is the second largest importer of shark fins in
Dental pathologies in lamniform and carcharhiniform sharks
Dental pathologies in lamniform and carcharhiniform sharks with comments on the classification and homology of double tooth pathologies in vertebrates Harrison S. Miller, Haviv M. Avrahami, Lindsay E. Zanno ABSTRACT: Double tooth pathologies are important indicators of trauma, disease, diet, and feeding biomechanics, and are widely documented in mammals. However, diagnosis of double tooth pathologies
An epithelial signalling centre in sharks supports homology of tooth morphogenesis in vertebrates
An epithelial signalling centre in sharks supports homology of tooth morphogenesis in vertebrates Alexandre P Thiery, Ariane S Standing, Rory L Cooper, Gareth J Fraser ABSTRACT: Development of tooth shape is regulated by the enamel knot signalling centre, at least in mammals. Fgf signalling regulates differential proliferation between the enamel knot and adjacent dental epithelia
Global collision-risk hotspots of marine traffic and the whale shark
Global collision-risk hotspots of marine traffic and the world’s largest fish, the whale shark Freya C. Womersley, Nicolas E. Humphries, Nuno Queiroz, Marisa Vedor, Ivo da Costa, Miguel Furtado, John P. Tyminski, Katya Abrantes, Gonzalo Araujo, Steffen S. Bach, Adam Barnett, Michael L. Berumen, Sandra Bessudo Lion, Camrin D. Braun, Elizabeth Clingham, Jesse E. M.
Evaluating the Shark Deterrent Effects of the Novel Exclusion Barrier in Comparison to the Rigorously Tested Sharksafe Barrier Technology
Evaluating the Shark Deterrent Effects of the Novel Exclusion Barrier in Comparison to the Rigorously Tested Sharksafe Barrier Technology Craig P O’Connell, Julia Crews, Andre King, Juliet Gressle ABSTRACT: Although exceedingly rare, shark attacks have a disproportionately large impact on human behavior, often resulting in shark culls. Due to the invasive nature of shark culls,
Shifts in habitat are associated with changes in fin and body shape in the scalloped hammerhead
Hammer it out: shifts in habitat are associated with changes in fin and body shape in the scalloped hammerhead (Sphyrna lewini) Phillip C Sternes, Timothy E Higham ABSTRACT: Major shifts in habitat often occur during life history and can have significant impacts on the morphology and function of an animal; however, little is known about