Results 51 to 60 of about 2,192 (149)

A Review of the Status of Sharks, Rays and Chimaeras of Panama to Guide Research and Conservation

Aquatic Conservation: Marine and Freshwater Ecosystems, Volume 35, Issue 4, April 2025.
ABSTRACT Chondrichthyan fishes (sharks, rays and chimaeras) are a group of high conservation concern globally. Species are impacted by varying threats, although fishing pressure is the primary stressor causing population declines. Panama comprises both Pacific and Caribbean coastlines with a diversity of estuarine and marine habitats supporting small ...
Jorge Manuel Morales‐Saldaña, Hector M. Guzmán, Angel J. Vega, Yolani A. Robles, Luis A. Montes, Peter M. Kyne   +5 more
wiley   +1 more source

Fishers' interactions with endangered “rhinorays” in Karimunjawa National Park, and factors influencing willingness to engage in pro‐conservation behavior

Conservation Science and Practice, Volume 7, Issue 4, April 2025.
Abstract The “rhinorays” (giant guitarfish‐Glaucostegidae and wedgefish‐Rhinidae) are a critically endangered group of “shark‐like rays,” which have experienced steep global population declines in the past decade due to overfishing. Their slow life histories and high market value increase the risk of trade‐driven extinction and lead to trade‐offs ...
Faqih Akbar Alghozali, Ashma Hanifah, Muhammad Wiralaga Dwi Gustianto, Maula Nadia, Taufiq Qur'rohman, Kinanti Amalia Niloperbowo, Diah P. Suyanto, Muhammad Ichsan, Andhika Prasetyo, Mahardika Rizqi Himawan, Hollie Booth   +10 more
wiley   +1 more source

Continental‐Scale Assessment of Climate‐Driven Marine Species Range Extensions Using a Decade of Citizen Science Data

Diversity and Distributions, Volume 31, Issue 4, April 2025.
ABSTRACT Aim Climate‐driven extensions of species distributions have serious consequences for human wellbeing and ecosystems. The recent growth of citizen science data collection represents an underutilised resource for the early detection of marine species range extensions (i.e., expansion of species' distributions at the poleward edge) that can ...
Barrett W. Wolfe, Curtis Champion, Troy Gaston, Joshua Brown, Melinda A. Coleman, Tom R. Davis, Sven Frijlink, Thomas Hatley, Freddie J. Heather, Gary Jackson, John P. Keane, Shannon Kjeldsen, Mark McGrouther, Natalie Moltschaniwskyj, Glenn Moore, Rod Pearn, Kate R. Rodda, Jan Strugnell, Jemina Stuart‐Smith, John W. Turnbull, Sue‐Ann Watson, Gretta T. Pecl   +21 more
wiley   +1 more source

Elasmobranchs observed in deepwaters (45-330m) at Isla del Coco National Park, Costa Rica (Eastern Tropical Pacific)

Revista de Biología Tropical, 2012
Isla del Coco is an oceanic island 500km off the Pacific coast of Costa Rica. It is a National Park and its marine fauna has been relatively well protected.
Jorge Cortés, Astrid Sánchez-Jiménez, J. Alexander Rodríguez-Arrieta, Geovanna Quirós-Barrantes, Paula C. González, Shmulik Blum   +5 more
doaj   +2 more sources

Unusual landing of the whitetip reef shark Triaenodon obesus at Cochin Fisheries Harbour [PDF]

, 2013
T. obesus, the only member of its genus, is a small shark usually not exceeding 1.6 m in length. This species is easily recognisable by its slender body and short but broad head, tubular skin flaps beside the nostrils, and white-tipped dorsal and ...
Najmudeen, T M, Sobhana, K S, Zacharia, P U, Nair, Rekha J, Kishore, T G, Divya, D D, Seetha, P K, Kizhakudan, Shoba Joe   +7 more
core   +1 more source

Balancing ecotourism and wildlife management through a conservation behavior approach

Conservation Science and Practice, Volume 7, Issue 3, March 2025.
We surveyed ecologists, conservationists, and ecotourism professionals to investigate consequences of ecotourism on animal behavior. We highlight four main behavioral themes and solutions for engendering more sustainable ecotourism that mitigates behavioral impacts.
Rachel Y. Chock, Eduardo Bessa, Josue David Arteaga‐Torres, Liv Baker, Richard Buchholz, Barbara Clucas, Cassandra Nuñez, Gabriela M. Pinho, Bruce A. Schulte, Daniel T. Blumstein, Bernard Kitheka, Alexander G. Allison, J. Edgardo Arevalo, Debra A. Hamilton, Claudio M. Monteza‐Moreno, Laney H. Nute, Javier Rodríguez‐Fonseca, Luis Sandoval, Jessica Stamn, Jennifer L. Verdolin, Lynn Von Hagen, Jimmy W. Wehsener, Brett M. Seymoure   +22 more
wiley   +1 more source

Efecto de actividades turísticas sobre el comportamiento de fauna representativa de las Islas Galápagos, Ecuador Short-term effects of tourism activities on the behavior of representative fauna on the Galapagos Islands, Ecuador

Latin American Journal of Aquatic Research, 2010
Fueron consideradas clave para actividades turísticas en 16 sitios de las Islas Galápagos: la raya sartén marmoleada (Taeniura meyeri), raya águila (Aetobatus narinari), tiburón de aleta blanca (Triaenodon obesus), tortuga verde (Chelonia mydas ...
Fernanda González-Pérez, Priscilla Cubero-Pardo   +1 more
doaj  

Eocene Shark Teeth From Peninsular Antarctica: Windows to Habitat Use and Paleoceanography

Paleoceanography and Paleoclimatology, Volume 39, Issue 11, November 2024.
Abstract Eocene climate cooling, driven by the falling pCO2 and tectonic changes in the Southern Ocean, impacted marine ecosystems. Sharks in high‐latitude oceans, sensitive to these changes, offer insights into both environmental shifts and biological responses, yet few paleoecological studies exist.
Gabriele Larocca Conte, Adam Aleksinski, Ashley Liao, Jürgen Kriwet, Thomas Mörs, Robin B. Trayler, Linda C. Ivany, Matthew Huber, Sora L. Kim   +8 more
wiley   +1 more source

Vulnerability of Eastern Tropical Pacific chondrichthyan fish to climate change

Global Change Biology, Volume 30, Issue 7, July 2024.
This assessment identifies sharks' vulnerability to climate change in a data‐poor tropical region and suggests management actions. Abstract Climate change is an environmental emergency threatening species and ecosystems globally. Oceans have absorbed about 90% of anthropogenic heat and 20%–30% of the carbon emissions, resulting in ocean warming ...
Florencia Cerutti‐Pereyra, Elizabeth J. Drenkard, Mario Espinoza, Brittany Finucci, Felipe Galván‐Magaña, Ana Hacohen‐Domené, Alexander Hearn, Mauricio E. Hoyos‐Padilla, James T. Ketchum, Paola A. Mejía‐Falla, Ana V. Moya‐Serrano, Andres F. Navia, Diana A. Pazmiño, Deni Ramírez‐Macías, Jodie L. Rummer, Pelayo Salinas‐de‐León, Oscar Sosa‐Nishizaki, Charles Stock, Andrew Chin   +18 more
wiley   +1 more source

Mitochondrial metabolism reveals a functional architecture in intact islets of Langerhans from normal and diabetic Psammomys obesus

, 2004
The cells within the intact islet of Langerhans function as a metabolic syncytium, secreting insulin in a coordinated and oscillatory manner in response to external fuel.
Barry, D.T., Shirihai, O.S., Messerli, M.A., Harel, T., Katzman, S.M., Chenault, V.M., Smith, P.J.S., Grossman, A.   +7 more
core   +1 more source