Author Archive

South Africa: Diver bitten by shark at Shelly Beach, KZN

South Africa: Diver bitten by shark at Shelly Beach, KZN

News Release Mi7 National Group 30. December 2022 —– —– —- Local Diver Attacked by Shark at Shelly Beach Earlier this morning, at about 09h30, Mi7 National Group’s Emergency Medical Services received information regarding a suspected shark attack in the Shelly Beach area. Mi7 medics were standing off at the Shelly Beach Ski Boat Club

Blue shark occurrence and relative abundance in the western South Atlantic Ocean influenced by spatiotemporal variability, environmental variables, and oceanographic processes

Blue shark occurrence and relative abundance in the western South Atlantic Ocean influenced by spatiotemporal variability, environmental variables, and oceanographic processes

Blue shark (Prionace glauca) occurrence and relative abundance in the western South Atlantic Ocean influenced by spatiotemporal variability, environmental variables, and oceanographic processes Maria Rondon-Medicci, Luis G. Cardoso, Bruno Mourato, L. Dalla Rosa ABSTRACT: The aim of this study was to evaluate spatiotemporal patterns in the distribution and relative abundance of blue sharks and their

Literature, social media and questionnaire surveys identify relevant conservation areas for Carcharhinus species in the Mediterranean Sea

Literature, social media and questionnaire surveys identify relevant conservation areas for Carcharhinus species in the Mediterranean Sea

Literature, social media and questionnaire surveys identify relevant conservation areas for Carcharhinus species in the Mediterranean Sea Carlo Cattano, Antonio Calò, Giorgio Aglieri, Petra Cattano, Manfredi Di Lorenzo, Desirèe Grancagnolo, Debora Lanzarone, Elena Principato, Davide Spatafora, Gabriele Turco, Marco Milazzo ABSTRACT: Sharks support ecosystems’ health, but their populations are facing severe declines worldwide. Knowledge gaps

New records of elasmobranchs from the southwestern Gulf of Mexico

New records of elasmobranchs from the southwestern Gulf of Mexico

New records of elasmobranchs (Vertebrata: Elasmobranchii) from the southwestern Gulf of Mexico Luis Fernando Del Moral-Flores, María Belén González-Pérez, Armando T. Wakida-Kusunoki, Adriana Martínez-Guevara, Guadalupe del Rosario Vleeshower-Hernández, Nissi Mariane Rodríguez-Rentería ABSTRACT: We present information about new records of 11 species of chondrichthyans in the southern Gulf of Mexico, adding information about new specimens and occurrence of the species in Mexican

Video: Great white shark caught in Tunisia, Dec 2022

NSW: Maximum protections in place against sharks this beach season

NSW: Maximum protections in place against sharks this beach season

Media Release Minister for Agriculture and Western NSW, Australia 16. December 2022 — — — — — The NSW Government is ramping up its shark management measures ahead of a busy summer season, today launching four Rapid Response Vessels that will be ready for action over the coming months. Minister for Agriculture Dugald Saunders said

PARALLEL INVESTIGATIONS CHARACTERIZE MAUI SHARK INCIDENT

PARALLEL INVESTIGATIONS CHARACTERIZE MAUI SHARK INCIDENT

News Release Department of Land and Natural Resources, Hawaii 16. December 2022 — — — — — Social Media Commenters Asked to Think Before Posting (WAILUKU) – Collaborative investigations by the Maui Police Department (MPD), and the DLNR Division of Conservation and Resources Enforcement (DOCARE), into last week’s disappearance of a 60-year-old Washington State woman

First evidence of population genetic structure of the deep-water blackmouth catshark

First evidence of population genetic structure of the deep-water blackmouth catshark

First evidence of population genetic structure of the deep-water blackmouth catshark Galeus melastomus Rafinesque, 1810 Diego M. Vazquez, Cynthia A. Awruch, Luis O. Lucifora, Juan M. Díaz de Astarloa, Ezequiel Mabragaña ABSTRACT: Among the main measures adopted to reduce anthropogenic impacts on elasmobranch communities, understanding the ecology of deep-sea sharks is of paramount importance, especially

Embryonic development timeline in skates

Embryonic development timeline in skates

Embryonic development timeline in skates (Chondrichthyes: Rajiformes): Sympterygia acuta as the first case study in the family Arhynchobatidae Diego M. Vazquez, Cynthia A. Awruch, Luis O. Lucifora, Juan M. Díaz de Astarloa, Ezequiel Mabragaña ABSTRACT: Oviparous elasmobranch embryos (Chondrichthyes) have been the focus of several embryological studies; they are useful models for studying early ontogeny

Interspecific foraging association of a nurse shark with bottlenose dolphins

Interspecific foraging association of a nurse shark with bottlenose dolphins

Interspecific foraging association of a nurse shark (Ginglymostoma cirratum) with bottlenose dolphins (Tursiops truncatus) Connor F. White, Harold. L. Pratt Jr., Theo C. Pratt, Nicholas M. Whitney  ABSTRACT: Animals sometimes forage in mixed species groups, where an individual of a “follower” species actively trails a foraging individual of another “nuclear” species to benefit from the

Electric pulses save sharks from fishing hooks

Electric pulses save sharks from fishing hooks

News Release University of Exeter 21. November 2022 — — — — — — — — Gadgets that emit small electrical pulses can drastically cut the number of sharks and stingrays caught accidentally on fishing lines, new research shows. A new device called SharkGuard attaches to longline fishing rigs to scare off sharks and rays.

Efficacy of a novel shark bycatch mitigation device in a tuna longline fishery

Efficacy of a novel shark bycatch mitigation device in a tuna longline fishery

Efficacy of a novel shark bycatch mitigation device in a tuna longline fishery Philip D. Doherty, Robert Enever, Lucy C.M. Omeyer, Lydia Tivenan, Grant Course, Guy Pasco, David Thomas, Ben Sullivan, Ben Kibel, Pete Kibel, Brendan J. Godley SUMMARY: Elasmobranchs (sharks, rays, and skates) are caught throughout fisheries globally, leading to over one-third of species

Molecular identification of shark species commercialised in the ‘17 de Diciembre’ market

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 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

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.