Results 41 to 50 of about 316 (140)

Defining ecological roles of sharks on coral reefs

Biological Reviews, Volume 100, Issue 6, Page 2707-2725, December 2025.
ABSTRACT Sharks have often been perceived to play a critical role in the dynamics of coral reef ecosystems globally. Yet, there is relatively little evidence to support this idea across all but a limited set of species and contexts. Research on the roles and importance of reef sharks has been complicated by logistical challenges in collecting data on ...
Natalie V. Klinard, Christopher G. Mull, Michael R. Heithaus, M. Aaron MacNeil   +3 more
wiley   +1 more source

Proteomic Insights into Seminal Plasma and Spermatozoa Proteins of Small-Spotted Catsharks, Scyliorhinus canicula: Implications for Reproductive Conservation in Aquariums

Animals
In the ex situ conservation of chondrichthyan species, successful reproduction in aquaria is essential. However, these species often exhibit reduced reproductive success under human care.
Marta Muñoz-Baquero, Laura Lorenzo-Rebenaque, Ximo García-Domínguez, Jesús Valdés-Hernández, Daniel García-Párraga, Clara Marin, Francisco Alberto García-Vázquez, Francisco Marco-Jiménez   +7 more
doaj   +1 more source

Scyliorhinus hachijoensis, a new species of catshark from the Izu Islands, Japan (Carcharhiniformes: Scyliorhinidae)

Zootaxa, 2022
A new species of catshark genus Scyliorhinus, S. hachijoensis sp. nov., is described for the islands of Mikurajima, Hachijojima, and Torishima in southeastern Japan. Scyliorhinus hachijoensis has clasper hooks, which is a common feature in males of the most closely related species (S.
NANAMI ITO, MIHO FUJII, KENJI NOHARA, SHO TANAKA   +3 more
openaire   +4 more sources

New records of the lollipop catshark Cephalurus cephalus (Scyliorhinidae) from the Gulf of California, Mexico

Revista Mexicana de Biodiversidad, 2012
On February 11th 2007, 13 neonates and 4 adults of Cephalurus cephalus were collected using a benthic sledge, during one oceanographic cruise (Talud X, St. 12) in the mid Gulf of California, Mexico (28º01’36” N, 111º51’50” W). The lollipop catsharks were
Hugo Aguirre-Villaseñor, Carolina Salas-Singh   +1 more
doaj   +1 more source

Sexual dimorphism in chain catshark, Scyliorhinus retifer (Elasmobranchii, Carcharhiniformes, Scyliorhinidae): Morphology and dermal denticles evidence [PDF]

Acta Ichthyologica et Piscatoria
We studied the morphological variation of the chain dogfish, Scyliorhinus retifer (Garman, 1881), to demonstrate sexual dimorphism based on 15 adult males {434–557 mm total length (TL)} and 10 adult females (437–556 mm TL) captured in the southern Gulf ...
Mónica Jimena Juárez-Maldonado, Luis Fernando Del Moral-Flores   +1 more
doaj   +3 more sources

Cross‐Validation of Diet Determination Methods for Seabird Conservation

Environmental DNA, Volume 7, Issue 4, July–August 2025.
This study on the diet of the endangered New Zealand king shag (Leucocarbo carunculatus) compared the frequency of occurrence of fishes detected from the same regurgitated pellets (n = 191) using both hard parts and DNA metabarcoding methodologies.
Aimee L. van der Reis, Chris Lalas, Rob Schuckard, Karen L. Middlemiss, Andrew G. Jeffs   +4 more
wiley   +1 more source

Retention Bans Are Beneficial but Insufficient to Stop Shark Overfishing

Fish and Fisheries, Volume 26, Issue 3, Page 473-487, May 2025.
ABSTRACT Sharks are among the most threatened groups of exploited fishes, comprising common bycatch across many fisheries. Management efforts intended to safeguard threatened species have increasingly focused on retention bans to reduce bycatch mortality. However, the population effects of such measures remain unevaluated across species.
Leonardo Manir Feitosa, Alicia M. Caughman, Nidhi G. D'Costa, Sara Orofino, Echelle S. Burns, Laurenne Schiller, Boris Worm, Darcy Bradley   +7 more
wiley   +1 more source

Mitigating the effect of by‐catch on endangered marine life

Animal Conservation, Volume 28, Issue 2, Page 172-184, April 2025.
Fishing gears cause substantial impacts on the oceans and their ecosystems, and many marine animals, such as sea turtles, marine mammals, seabirds and elasmobranchs, end up as by ‐catch. In this paper, the most effective mitigation measures were investigated for each group, taking into account the fishing gear with which they interact most.
M. Villafáfila, A. J. Carpio, M. L. Rivas   +2 more
wiley   +1 more source

Using High‐Resolution Fisheries Data to Identify Spatial Patterns in Retained Catch Compositions for Mixed Fisheries

Fish and Fisheries, Volume 26, Issue 2, Page 316-330, March 2025.
ABSTRACT Mixed fisheries exploit fish stocks that are heterogeneously distributed in space using gears that are not species selective. This poses a challenge for management as catch limits for less productive stocks constrain catches of more productive stocks leading to losses in yield and economic value. Decoupling catches of stocks caught together in
Gianfranco Anastasi, Johnathan Ball, Roi L. Martinez, Paul J. Dolder   +3 more
wiley   +1 more source

Investigating gear and seasonal effects in experimental trawl surveys: The case of Galeus melastomus Rafinesque, 1810 (Chondrichthyes, Scyliorhinidae) in the South of Sicily (Central Mediterranean)

Egyptian Journal of Aquatic Research, 2017
Mediterranean young-fish oriented experimental bottom trawl surveys represent a precious source of information on both past and current standing stocks and their life history traits and exploitation state.
T. Bottari, P. Rinelli, S. Ragonese
doaj   +1 more source