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Molecular identification of shark species commercialised in the ‘17 de Diciembre’ market
Molecular identification of shark species commercialised in the ‘17 de Diciembre’ market, Santo Domingo de los Tsáchilas-Ecuador Ana Belén Manzanillas Castro, Camila Acosta-López ABSTRACT: This is the first study to determine the main shark species being sold in the ‘17 de Diciembre’ market, in Santo Domingo de Los Tsáchilas, Ecuador. A total of 150 samples
Demographic Analysis of Shortfin Mako Shark in the South Pacific Ocean
Demographic Analysis of Shortfin Mako Shark (Isurus oxyrinchus) in the South Pacific Ocean Hoang Huy Huynh, Chun-Yi Hung, Wen-Pei Tsai ABSTRACT: The shortfin mako shark (Isurus oxyrinchus) demonstrates low productivity and is thus relatively sensitive to fishing. Natural mortality (M) and fishing mortality (F) data are critical to determine their population dynamics. However, catch and
Ocean depth–temperature profiles for operational oceanography from a shark-borne transmitter
Ocean depth–temperature profiles for operational oceanography from a shark-borne transmitter Kim Holland, Carl Meyer, James Potemra, Melinda Holland ABSTRACT: Background Many regions of the ocean are under-sampled in terms of their biology and physical structure. Increasingly sophisticated animal-borne electronic tags are capable of measuring and transmitting in situ environmental data such as ocean temperature–depth profiles.
Escape response kinematics in two species of tropical shark
Escape response kinematics in two species of tropical shark: short escape latencies and high turning performance José E. Trujillo, Ian Bouyoucos, William J. Rayment, Paolo Domenici, Serge Planes, Jodie L. Rummer, Bridie J. M. Allan ABSTRACT: Accelerative manoeuvres, such as fast-starts, are crucial for fish to avoid predation. Escape responses are fast-starts that include fundamental
Smart sharks: a review of chondrichthyan cognition
Smart sharks: a review of chondrichthyan cognition Culum Brown, Vera Schluessel ABSTRACT: 450 million years of evolution have given chondrichthyans (sharks, rays and allies) ample time to adapt perfectly to their respective everyday life challenges and cognitive abilities have played an important part in that process. The diversity of niches that sharks and rays occupy
A new sawtail catshark from the Philippines
Galeus friedrichi (Carcharhiniformes: Pentanchidae), a new sawtail catshark from the Philippines Ebert, David A.; Jang, Jessica J. ABSTRACT: A new species of sawtail catshark, Galeus friedrichi n. sp., is described from the Philippines. The new species is separable from other western Pacific Galeus species by the absence of saddle or blotch markings, a large size,
Parthenogenesis in an elasmobranch in the presence of conspecific males
Parthenogenesis in an elasmobranch in the presence of conspecific males K.A. Feldheim, J. Dubach, L. Watson ABSTRACT: Parthenogenesis has been observed in several elasmobranch species, primarily in public aquaria. The majority of cases of parthenogenesis have occurred either when females were held without males or once a male was removed from a female’s habitat. Here
Seventy years of tunas, billfishes, and sharks as sentinels of global ocean health
Seventy years of tunas, billfishes, and sharks as sentinels of global ocean health Maria José Juan-Jordá, Hilario Murua, Haritz Arrizabalaga, Gorka Merino, Nathan Pacoureau, Nicholas K. Dulvy ABSTRACT: Fishing activity is closely monitored to an increasing degree, but its effects on biodiversity have not received such attention. Using iconic and well-studied fish species such as
Multi-year effects of wildlife tourism on shark residency and implications for management
Multi-year effects of wildlife tourism on shark residency and implications for management Yuri Niella, Vinay Udyawer, Michael Drew, Brett Simes, Hugh Pederson, Charlie Huveneers ABSTRACT: Wildlife tourism can assist species conservation through community-involvement and education, while contributing to regional economies. In the last decade, shark diving has become increasingly popular among wildlife tourists worldwide, including
‘A human values issue’: Actors, arguments, and regulatory change in the Florida land-based shark fishery
‘A human values issue’: Actors, arguments, and regulatory change in the Florida land-based shark fishery Julia Wester, Dylann Turffs, David Shiffman, Catherine Macdonald ABSTRACT: Aquatic Conservation: Marine and Freshwater Ecosystems, 1– 17. DOI: 10.1002/aqc.3896 SOURCE
Long-range electric deterrents not as effective as personal deterrents for reducing risk of shark bite
Long-range electric deterrents not as effective as personal deterrents for reducing risk of shark bite Madeline Riley, Corey J A Bradshaw, Charlie Huveneers ABSTRACT: While personal electric deterrents can reduce the risk of shark bites, evidence for the efficacy of other products is limited. We assessed two versions of a novel electric deterrent—80 and 150
Short-term response of research activities on white shark behaviour
Short-term response of research activities on white shark behaviour Yuri Niella, Brett Simes , Andrew Fox, Andrew Wright, Matt Waller, Madeline Riley, Lauren Meyer, Michael Drew, Hugh Pederson, Charlie Huveneers ABSTRACT: Context: Researchers studying animals need to ensure that sampling procedures and the methods they use are as harmless and non-disruptive as possible, particularly when
Elasmobranch-associated microbiota: a scientometric literature review
Elasmobranch-associated microbiota: a scientometric literature review Ivana Correia Costa, Mariene Amorim de Oliveira, Natascha Wosnick, Rachel Ann Hauser-Davis, Salvatore Siciliano, Jorge Luiz Silva Nunes ABSTRACT: Elasmobranchs provide greatly relevant ecosystem services for the balance of the environments in which they are inserted. In recent decades, sharp population declines have been reported for many species in
New record of smalltooth sand tiger in the Mediterranean
New record of smalltooth sand tiger Odontaspis ferox (Risso, 1810) in the Mediterranean Alen Soldo, Rigers Bakiu, Nexhip Hysolakoj ABSTRACT: One shark was landed at the Naval Base Pasha Liman, Bay of Vlore, Albania, the Adriatic Sea. Photographic records only enabled the specimen to be placed in family Odontaspididae or Carchariidae. Later examination of the
A content analysis of 32 years of Shark Week documentaries
A content analysis of 32 years of Shark Week documentaries Lisa B. Whitenack, Brady L. Mickley, Julia Saltzman, Stephen M. Kajiura, Catherine C. Macdonald, David S. Shiffman ABSTRACT: Despite evidence of their importance to marine ecosystems, at least 32% of all chondrichthyan species are estimated or assessed as threatened with extinction. In addition to the