Scientific Papers

Field assessment of behavioural responses of southern stingrays to acoustic stimuli

Field assessment of behavioural responses of southern stingrays to acoustic stimuli

Field assessment of behavioural responses of southern stingrays (Hypanus americanus) to acoustic stimuli Megan F. Mickle, Rachel H. Pieniazek, Dennis M. Higgs ABSTRACT: The ability of elasmobranchs to detect and use sound cues has been heavily debated in previous research and has only recently received revived attention. To properly understand the importance of sound to

Opportunities from citizen science for shark conservation

Opportunities from citizen science for shark conservation

Opportunities from citizen science for shark conservation, with a focus on the Mediterranean Sea F. Bargnesi, S. Lucrezi, F. Ferretti ABSTRACT: The Mediterranean Sea is a hotspot for shark conservation. A decline in large pelagic shark populations has been observed in this vast region over the last 50 years and a lack of data on the

Phylogenetics and biogeography of the walking shark genus Hemiscyllium

Phylogenetics and biogeography of the walking shark genus Hemiscyllium

Walking, swimming or hitching a ride? Phylogenetics and biogeography of the walking shark genus Hemiscyllium Christine L. Dudgeon, Shannon Corrigan, Lei Yang, Gerry R. Allen, Mark V. Erdmann, Fahmi, Hagi Y. Sugeha, William T. White, Gavin J. P. Naylor ABSTRACT: It can be challenging to identify the forces that drive speciation in marine environments for

Large-scale movements and site fidelity of bull sharks at Reunion Island

Large-scale movements and site fidelity of bull sharks at Reunion Island

Large-scale movements and site fidelity of bull sharks (Carcharhinus leucas) at Reunion Island (Indian ocean) Marc Soria, Yann Tremblay, Antonin Blaison, Fabien Forget, Estelle Crochelet, Laurent Dagorn ABSTRACT: Two bull sharks ( Carcharhinus leucas ) were tagged in coastal waters off Reunion Island in the tropical Indian Ocean and where tracked for 174 and 139

Morphological description of ovary and uterus of the nurse shark caught off Northeast Brazil

Morphological description of ovary and uterus of the nurse shark caught off Northeast Brazil

Morphological description of ovary and uterus of the nurse shark (Ginglymostoma cirratum) caught off at the Fortaleza coast, Northeast Brazil Mariana G. Rêgo, Maria Lucia G. Araujo, Maria Edna G. Barros, Lorena D’Andrade Aires, Paulo G.V. Oliveira, Fábio H.V. Hazin, John L. Fitzpatrick, Joaquim Evêncio-Neto ABSTRACT: The nurse shark, Ginglymostoma cirratum (Bonnaterre, 1778) is one

The importance of oceanic atoll lagoons for coral reef predators

The importance of oceanic atoll lagoons for coral reef predators

The importance of oceanic atoll lagoons for coral reef predators Christina Skinner, Aileen C. Mill, Steven P. Newman, S. Nadia Alsagoff, Nicholas V. C. Polunin ABSTRACT: Predators on coral reefs play an important ecological role structuring reef fish communities and are important fishery targets. It is thought that reef predator assemblages increase in density and

Abundance and distribution of the white shark in the Mediterranean Sea

Abundance and distribution of the white shark in the Mediterranean Sea

Abundance and distribution of the white shark in the Mediterranean Sea Stefano Moro, Giovanna Jona‐Lasinio, Barbara Block, Fiorenza Micheli, Giulio De Leo, Fabrizio Serena, Massimiliano Bottaro, Umberto Scacco, Francesco Ferretti ABSTRACT: Conservation of apex predators is a key challenge both in marine and terrestrial ecosystems. The white shark is a rare but persistent inhabitant of

Prevalence, persistence and impacts of residual fishing hooks on tiger sharks

Prevalence, persistence and impacts of residual fishing hooks on tiger sharks

Prevalence, persistence and impacts of residual fishing hooks on tiger sharks Michel Bègue, Eric Clua, Gilles Siu, Carl Meyer ABSTRACT: We used long-term observations of 55 individually identified tiger sharks (Galeocerdo cuvier) at a shark ecotourism site off Tahiti to estimate the prevalence, retention times and impacts of residual hooks and trailing line resulting from

The artisanal elasmobranch fishery on Guatemala’s Caribbean coast

The artisanal elasmobranch fishery on Guatemala’s Caribbean coast

Description and characterization of the artisanal elasmobranch fishery on Guatemala’s Caribbean coast Ana Hacohen-Domené, Francisco Polanco-Vásquez, Colombo Estupiñan-Montaño, Rachel T. Graham ABSTRACT: Small-scale shark and ray fisheries are conducted throughout Central America’s Caribbean coast. Yet, there is limited information regarding catch composition and diversity of these fisheries, especially in Guatemala. Surveys of catch landings were

Multiple morphological abnormalities in a blue shark embryo from the Peruvian coast

Multiple morphological abnormalities in a blue shark embryo from the Peruvian coast

Multiple morphological abnormalities in a blue shark Prionace glauca (Linnaeus, 1758) embryo from the Peruvian coast, southeast Pacific Keny Kanagusuku, Miguel Romero, Sergio Ramírez-Amaro ABSTRACT: This study reports for the first time a case of multiple morphological abnormalities in a blue shark Prionace glauca embryo collected on the Peruvian coast, southeast Pacific. External exploration and

New records and range extension of the Portuguese dogfish in the Southwestern Atlantic Ocean

New records and range extension of the Portuguese dogfish in the Southwestern Atlantic Ocean

New records and range extension of the Portuguese dogfish Centroscymnus coelolepis in the Southwestern Atlantic Ocean, with comments on its morphology Federico Mas, Rodrigo Forselledo, Andrés Domingo, Oscar Pin, Pablo Troncoso, Eugenia Errico, Alejandro Marquez, Sho Tanaka, Simon Weigmann ABSTRACT: The Portuguese dogfish Centroscymnus coelolepis is a wide‐ranging deep‐water shark and a common by‐catch component

Blacktip reefshark individual’s identification in Morotai waters

Blacktip reefshark individual’s identification in Morotai waters

Blacktip reefshark (Carcharhinus melanopterus) individual’s identification in Morotai waters using its fin’s natural markings Darmawan Ahmad Mukharror, Dewi Susiloningtyas, Tuty Handayani, Niomi Pridina ABSTRACT: As part of conservation means, ecotourism on shark watching activities has been popular for the last 10 – 25 years. Achieving rank fourth in the shark tourism world, shark watching tourism

Tonic immobility induction and duration on halmahera walking shark

Tonic immobility induction and duration on halmahera walking shark

Tonic immobility induction and duration on halmahera walking shark (Hemischyllium halmahera) D A Mukharror, D Susiloningtyas, M Ichsan ABSTRACT: Tonic immobility is an induce method to achieve a temporary condition of cataleptic-like, which is a sudden loss of muscle tone, as a result of various procedures such as situate the object in an “unnatural” position

Assessing stock status of grey sharpnose shark in Java Sea

Assessing stock status of grey sharpnose shark in Java Sea

Assessing stock status of grey sharpnose shark (Rhizoprionodon oligolinx Springer, 1964) in Java Sea Wijopriono and T Ernawati ABSTRACT: Increasing demand for shark products leads to over fishing of these species in many areas, damaging their population. Grey sharpnose shark (Rhizoprionodon oligolinx) is caught mostly by gillnet fleet in Java Sea. The objective of the

BRUVS reveal locally extinct shark and the way for shark monitoring in Brazilian oceanic islands

BRUVS reveal locally extinct shark and the way for shark monitoring in Brazilian oceanic islands

BRUVS reveal locally extinct shark and the way for shark monitoring in Brazilian oceanic islands Caio R. Pimentel, Ryan Andrades, Carlos E. L. Ferreira, Otto B. F. Gadig, Euan S. Harvey, Jean‐Christophe Joyeux, Tommaso Giarrizzo ABSTRACT: Here we present records of sharks obtained using baited remote underwater stereo‐video systems (stereo‐BRUVS) at two Brazilian oceanic islands.