Results 11 to 20 of about 260 (121)

Summarising 40 years of gastric lavage studies to evaluate efficiency and survival in sharks and rays. [PDF]

J Fish Biol
Abstract Traditionally, lethal stomach dissection has been used to study the diets of sharks and rays, but conservation and animal welfare concerns necessitate non‐lethal alternatives, such as gastric lavage (stomach or gut flushing). In this study, we summarised gastric lavage studies on elasmobranchs to identify which species/groups it has been ...
Myers J, Sheaves M, Barnett A.
europepmc   +2 more sources

First record of the whitetip reef shark, Triaenodon obesus from the coast of Jalisco, western Mexico mainland [PDF]

Marine Biodiversity Records, 2016
The whitetip reef shark, Triaenodon obesus, is distributed across the entire Indo-Pacific region, from South Africa and the Red Sea to Australia, Micronesia, the Pitcairn Islands, and Hawaii. It has also been reported in the Revillagigedo Archipelago and the Baja California peninsula, which are situated between 700 and 900 km to the west of Jalisco ...
Alejandro Rosende Pereiro
exaly   +2 more sources

The Phenomenon of Piebaldism in Sharks: A Review of Global Sightings and Patterns. [PDF]

Ecol Evol
Chromatic disorders like piebaldism—a rare form of leucism causing partial pigment loss—have been documented in 25 wild shark cases across 17 species and 11 families, with varying anatomical distribution. This study compiles published and unpublished records to better understand the taxonomic and geographical spread of piebaldism and its potential ...
Whitehead DA, Parmegiani A, Gobbato J, Mizyan M, Askin A, Scroglieri S, Galli P, Seveso D, Montano S, Gayford JH.   +9 more
europepmc   +2 more sources

Using citizen science photographs to identify reproductive events in an oviparous elasmobranch. [PDF]

J Fish Biol
Abstract Identifying critical habitats is important for the effective management of vulnerable species. Critical habitats, such as mating or nursery grounds, support populations during key life stages and help to maximise reproductive output and population growth. In elasmobranchs, mating often happens over a defined season, suggesting sites associated
Mawer R, Dodd J, Thorburn J, Burns NM, Bailey DM.   +4 more
europepmc   +2 more sources

Clasper Flaring: Maintenance Behavior, or a Normally Hidden Feature of Male Whitetip Reef Sharks, Triaenodon Obesus? [PDF]

The Open Fish Science Journal, 2013
Male whitetip reef sharks, Triaenodon obsesus, are able to pivot their claspers beyond regular flexing, including spreading their distal tips in a funnel like fashion. The feature of this extended clasper flexing, labelled clasper flaring, is described here. It is speculated to possibly reflect a pre- or post-copulation-related behavior.
EK Ritter, LVJ Compagno
exaly   +2 more sources

Vulnerability of tropical fish communities across depth in the central Indian Ocean. [PDF]

Conserv Biol
Abstract Coral reefs and their fish communities below scuba diving depth (>30 m), in mesophotic coral ecosystems (MCEs) (∼30–150 m), in rariphotic (150–300 m), and in upper bathyal waters (300–500 m) are often underexplored, especially in the Indian Ocean.
Stefanoudis PV, de Villiers NM, Afzal MS, Amir H, Amjad F, Hashim AS, Jauharee AR, Palmer R, Rogers AD, Shimal M, Naeem S, Ahusan M, Woodall LC.   +12 more
europepmc   +2 more sources

Diel use of a saltwater creek by white-tip reef sharks Triaenodon obesus (Carcharhiniformes: Carcharhinidae) in Academy Bay, Galapagos Islands

Revista de Biología Tropical, 2012
White-tip reef sharks are common inhabitants of the shallow waters surrounding the Galapagos Islands, where several known aggregation sites have become touristic attractions.
César Peñaherrera, Alex R Hearn, Angela Kuhn   +2 more
doaj   +6 more sources

Uso de hábitat de Triaenodon obesus (Carcharhiniformes: Carcharhinidae), Rhincodon typus (Orectolobiformes: Rhincodontidae) y Manta birostris (Myliobatiformes: Myliobatidae) en el Parque Nacional Natural Gorgona, Pacífico colombiano

Revista de Biología Tropical, 2014
Se evaluó el uso de hábitat del aletiblanco Triaenodon obesus, la mantaraya Manta birostris y el tiburón ballena Rhincodon typus en la Isla Gorgona, a partir de 427 inmersiones de buceo y del análisis de 866 fotografías y videos. T.
Paola Andrea Mejía-Falla, Andrés Felipe Navia, Rafael Lozano, Alexander Tobón-López¹, Krupskaya Narváez, Luis Augusto Muñoz-Osorio, Luz Marina Mejía-Ladino, Juliana López-García   +7 more
doaj   +4 more sources

Comparative Space Use of Sympatric Sharks at a Remote Island in the South Pacific Ocean. [PDF]

Ecol Evol
The space use of 34 dusky (Carcharhinus obscurus), 32 Galapagos (C. galapagensis), 47 tiger (Galeocerdo cuvier), and 20 sandbar (C. plumbeus) sharks was monitored with acoustic telemetry between 2021 and 2024 in coastal waters around Norfolk Island, Australia, a remote small island in the southwestern Pacific Ocean.
Matley JK, Roberts CN, Clarke TM, Meyer L, Doane MP, Dinsdale EA, Scott M, Barnett A, Huveneers C.   +8 more
europepmc   +2 more sources

Registro más austral del tiburón de arrecife de punta blanca Triaenodon obesus (Carcharhiniformes, Carcharhinidae) en el Pacífico Tropical Oriental

Revista Peruana de Biología
Este trabajo documenta el registro de Triaenodon obesus (Rüppell, 1837) a partir de características morfológicas y del análisis de secuencias de los genes COI y 16S ARNr.
Beder Ramírez Segura, Solange Alemán Mejía, Carlos Luque Sanchez   +2 more
doaj   +2 more sources