Results 61 to 70 of about 680 (176)

Santonian-Campanian neoselachian faunas of the Upper Cretaceous Yezo Group in Nakagawa Town, Hokkaido, Japan

, 2022
Fifty-one fossil shark teeth, including Hexanchiformes, Echinorhiniformes, Squaliformes and Lamniformes, are described from two localities in Nishichirashinai and Omagari formations of the Yezo Group in Nakagawa Town, Hokkaido, Japan.
Nakagaki, Shuhei, Nakajima, Yasuhisa, Sato, Tamaki, Tokumaru, Sayaka, Misaki, Akihiro, Kanno, Shiori, Hikida, Yoshinori   +6 more
core   +1 more source

FIGURE 4 in Etmopterus marshae sp. nov, a new lanternshark (Squaliformes: Etmopteridae) from the Philippine Islands, with a revised key to the Etmopterus lucifer clade

, 2018
FIGURE 4. Ventral flank marking between pelvic fins and lower caudal origin of Etmopterus marshae new species (holotype, PNM 15353).Published as part of Ebert, David A. & Van Hees, Kelley E., 2018, Etmopterus marshae sp.
KELLEY E. VAN HEES, Ebert, David A., DAVID A. EBERT, Van Hees, Kelley E.   +3 more
core   +1 more source

A first record of the Smallfin Gulper Shark Centrophorus moluccensis Bleeker, 1860 (Chondrichthyes: Squaliformes: Centrophoridae) from the Andaman & Nicobar waters, Indian EEZ

Journal of Threatened Taxa, 2017
The Smallfin Gulper Shark Centrophorus moluccensis is reported for the first time from the Andaman & Nicobar waters of the Indian EEZ.  A male specimen of 785mm total length and weighing 2.34kg was landed by a motorized longliner at Burmanallah, South ...
H. D. Pradeep, Swapnil S. Shirke, M. Nashad, Monalisha Devi Sukham   +3 more
doaj   +1 more source

Predicting time‐at‐depth weighted biodiversity patterns for sharks of the North Pacific

Ecography, Volume 2025, Issue 3, March 2025.
Depth is a fundamental and universal driver of ocean biogeography but it is unclear how the biodiversity patterns of larger, more mobile organisms change as a function of depth. Here, we developed a predictive biogeography model to explore how information of mobile species' depth preferences influence biodiversity patterns.
Zachary A. Siders, Lauren B. Trotta, William Patrone, Fabio P. Caltabellotta, Katherine B. Loesser, Benjamin Baiser   +5 more
wiley   +1 more source

Molecular Identification of Shark Meat From Local Markets in Southern Brazil Based on DNA Barcoding: Evidence for Mislabeling and Trade of Endangered Species

Frontiers in Genetics, 2018
Elasmobranchs, the group of cartilaginous fishes that include sharks and rays, are especially vulnerable to overfishing due to low fecundity and late sexual maturation.
Fernanda Almerón-Souza, Christian Sperb, Carolina L. Castilho, Pedro I. C. C. Figueiredo, Leonardo T. Gonçalves, Rodrigo Machado, Larissa R. Oliveira, Victor H. Valiati, Nelson J. R. Fagundes   +8 more
doaj   +1 more source

Seasonal dynamics of the cestode fauna in spiny dogfish,Squalus acanthias(Squaliformes: Squalidae)

Parasitology, 2014
SUMMARYThis study furthers understanding of cestode infections in a marine environment through time and space by following seasonal fluctuations in infection parameters of three cestode species (Gilquinia squali, Trilocularia gracilisandPhyllobothrium squali) parasitizing spiny dogfish (Squalus acanthias) in the northwest Atlantic and comparing them to
Maria, Pickering, Janine N, Caira
openaire   +2 more sources

Design and Validation of an Open–Close Device for Integrated Environmental DNA Sampling Detects A Depth Gradient in Indian Ocean Deep‐Sea Fish Assemblages

Ecology and Evolution, Volume 15, Issue 2, February 2025.
The goal of this study was to leverage existing survey technology to design and test an eDNA sampler that captures an integrated eDNA sample over the length of a deep‐water transect. We provide a biological interpretation of the resulting data, demonstrating the usefulness of such technology to understand the ocean environments, using fish species as ...
Cindy Bessey, Andrew Martini, Alasdair Currie, Will Ponsonby, Aaron Tyndall, Ryan Crossing, Vinícius Werneck Salazar, Kathryn L. Dawkins, John J. Pogonoski, Glenn Moore, Nick Mortimer, John K. Keesing   +11 more
wiley   +1 more source

The rise and fall of shark functional diversity over the last 66 million years

Global Ecology and Biogeography, Volume 33, Issue 9, September 2024.
Abstract Aim Modern sharks are a diverse and highly threatened group playing important roles in ecosystems. They have an abundant fossil record spanning at least 250 million years (Myr), consisting primarily of isolated teeth. Throughout their evolutionary history, sharks have faced multiple environmental changes and extinction events.
Jack A. Cooper, Catalina Pimiento
wiley   +1 more source

FIGURE 1 in Resurrection and redescription of Squalus suckleyi (Girard, 1854) from the North Pacific, with comments on the Squalus acanthias subgroup (Squaliformes: Squalidae)

, 2010
FIGURE 1. Squalus suckleyi, neotype (CAS 227267, adult male 674 mm TL). A, Lateral view; B, Ventral view of the head.Published as part of Ebert, David A., White, William T., Goldman, Kenneth J., Compagno, Leonard J.
Daly, Toby S., Ward, Robert D., Ebert, David A., White, William T., Goldman, Kenneth J., Engel, -, Compagno, Leonard J. V.   +6 more
core   +1 more source

Size at sexual maturity, seasonal variation by maturity stages, and fecundity of the spotted round ray (Urobatis maculatus) and the thorny stingray (Urotrygon rogersi) from the northern tropical eastern Pacific

Journal of Fish Biology, Volume 104, Issue 5, Page 1587-1602, May 2024.
Abstract Round rays (family: Urotrygonidae) are commonly caught as by‐catch by shrimp trawl fisheries in the tropical eastern Pacific (TEP). However, little information on their life history and catch species composition exists for most round ray species, preventing the evaluation of the impact of fishing on their populations.
Alain García‐Rodríguez, Javier Tovar‐Ávila, A. Hiromi Arellano‐Cuenca, David Rivas‐Landa, Darío A. Chávez‐Arrenquín, Felipe Amezcua   +5 more
wiley   +1 more source