Publications

Predicting and contextualizing sensitivity to overfishing in Neotropical freshwater stingrays

Predicting and contextualizing sensitivity to overfishing in Neotropical freshwater stingrays

Predicting and contextualizing sensitivity to overfishing in Neotropical freshwater stingrays (Chondrichthyes: Potamotrygonidae) Lucifora, L.O., Scarabotti, P.A. & Barbini, S.A. ABSTRACT: Neotropical freshwater stingrays (Potamotrygonidae) are conspicuous components of the South American ichthyofauna, and may be regionally important as an economic resource. The smallest individuals are exploited in ornamental fisheries, while large individuals are caught in

Discovery of a putative scalloped hammerhead shark nursery site at the Galapagos Islands

Discovery of a putative scalloped hammerhead shark nursery site at the Galapagos Islands

Discovery of a putative scalloped hammerhead shark Sphyrna lewini (Carcharhiniformes: Sphyrnidae) nursery site at the Galapagos Islands, Eastern Tropical Pacific Yasuní Chiriboga-Paredes, Ángela Palomino, Lauren Goodman, Florencia Córdova, Viviana Páez, Manuel Yépez, Salvador Jorgensen, Daniel Armijos, Diana Pazmiño, Alex Hearn ABSTRACT: Sphyrna lewini is a viviparous shark that pups in shallow coastal waters. Given dramatic

Maternal investment evolves with larger body size and higher diversification rate in sharks and rays

Maternal investment evolves with larger body size and higher diversification rate in sharks and rays

Maternal investment evolves with larger body size and higher diversification rate in sharks and rays Christopher G Mull, Matthew W Pennell, Kara E Yopak, Nicholas K Dulvy ABSTRACT: Across vertebrates, live-bearing has evolved at least 150 times from the ancestral state of egg-laying into a diverse array of forms and degrees of prepartum maternal investment.

Cryptic Behaviors and Post-capture Recovery Processes: New Insights From a Threatened Marine Apex Predator

Cryptic Behaviors and Post-capture Recovery Processes: New Insights From a Threatened Marine Apex Predator

Cryptic Behaviors and Post-capture Recovery Processes: New Insights From a Threatened Marine Apex Predator Richard Grainger, David Raubenheimer, Victor M. Peddemors, Paul A. Butcher, Gabriel E. Machovsky-Capuska ABSTRACT: Multisensor biologging provides a powerful tool for ecological research, enabling fine-scale observation of animals to directly link physiology and movement to behavior across ecological contexts. However, applied

Mode of uterine milk secretion in the white shark

Mode of uterine milk secretion in the white shark

Mode of uterine milk secretion in the white shark Taketeru Tomita, Masaru Nakamura, Ryo Nozu, Nobuhiro Ogawa, Minoru Toda, Keiichi Sato ABSTRACT: Examination of the uterus of a dead female white shark (Carcharodon carcharias), which contained the earliest known white shark embryos, revealed that the uterine wall produces lipid-rich secretion (histotroph or “uterine milk”) for

Squatina mapama n. sp., a new cryptic species of angel shark

Squatina mapama n. sp., a new cryptic species of angel shark

Squatina mapama n. sp., a new cryptic species of angel shark (Elasmobranchii: Squatinidae) from the southwestern Caribbean Sea Long, Douglas J.; Ebert, David A.; Tavera, Jose; Acero P., Arturo; Robertson, D.R. ABSTRACT: Integrating both morphological and genetic data, we describe Squatina mapama, a new species of the angel shark genus Squatina, found on the upper

Retrospective stable isotopes of vertebrae reveal sexual ontogenetic patterns and trophic ecology in oceanic whitetip shark

Retrospective stable isotopes of vertebrae reveal sexual ontogenetic patterns and trophic ecology in oceanic whitetip shark

Retrospective stable isotopes of vertebrae reveal sexual ontogenetic patterns and trophic ecology in oceanic whitetip shark, Carcharhinus longimanus Yongfu Shen, Yi Gong, Feng Wu, Yunkai Li ABSTRACT: There is a common phenomenon in nature whereby some animals have differences in their ontogenetic changes in dietary preferences between sexes, especially apex predators. These reflect changes in

Molecular Weight Analysis of Blue Shark Collagen Hydrolysates by GPC-LS

Molecular Weight Analysis of Blue Shark Collagen Hydrolysates by GPC-LS

Molecular Weight Analysis of Blue Shark (Prionace glauca) Collagen Hydrolysates by GPC-LS; Effect of High Molecular Weight Hydrolysates on Fibroblast Cultures: mRNA Collagen Type I Expression and Synthesis María Blanco, Noelia Sanz, Ana C. Sánzhez, Begoña Correa, Ricardo I. Pérez-Martín, Carmen G. Sotelo ABSTRACT: High molecular weight (Mw) collagen hydrolysates have been demonstrated to produce

Morphological Traits and Capture Depth of the Norwegian Skate from Two Mediterranean Populations

Morphological Traits and Capture Depth of the Norwegian Skate from Two Mediterranean Populations

Morphological Traits and Capture Depth of the Norwegian Skate (Dipturus nidarosiensis (Storm, 1881)) from Two Mediterranean Populations Pierluigi Carbonara, Andrea Bellodi, Walter Zupa, Marilena Donnaloia, Palma Gaudio, Cosmidano Neglia, Maria Cristina Follesa ABSTRACT: The Norwegian skate Dipturus nidarosiensis (Storm, 1881) has only recently been recorded in the western-central Mediterranean Sea. It was hypothesized a more

Mechanisms of SARS-CoV-2 neutralization by shark variable new antigen receptors

Mechanisms of SARS-CoV-2 neutralization by shark variable new antigen receptors

Mechanisms of SARS-CoV-2 neutralization by shark variable new antigen receptors elucidated through X-ray crystallography Obinna C. Ubah, Eric W. Lake, Gihan S. Gunaratne, Joseph P. Gallant, Marie Fernie, Austin J. Robertson, Jonathan S. Marchant, Tyler D. Bold, Ryan A. Langlois, William E. Matchett, Joshua M. Thiede, Ke Shi, Lulu Yin, Nicholas H. Moeller, Surajit Banerjee,

Growth estimates of young-of-the-year broadnose sevengill shark

Growth estimates of young-of-the-year broadnose sevengill shark

Growth estimates of young-of-the-year broadnose sevengill shark, Notorynchus cepedianus, a top predator with poorly calcified vertebrae Andrés J. Jaureguizar, Federico Cortés, J. Matias Braccini, Rodrigo Wiff, Andrés C. Milessi ABSTRACT: The broadnose sevengill shark, Notorynchus cepedianus (Péron, 1807), is a large marine top predator in temperate coastal ecosystems. Some aspects of its life history have

Leopard Seals Predating on Chondrichthyans

Leopard Seals Predating on Chondrichthyans

Leopard Seals (Hydrurga leptonyx) in New Zealand Waters Predating on Chondrichthyans Krista van der Linde, Ingrid N. Visser, Rick Bout, Chris Lalas, Lara Shepherd, David Hocking, Brittany Finucci, Jim Fyfe, Matthew Pinkerton ABSTRACT: Leopard seals (Hydrurga leptonyx) are top-order predators that prey on a wide variety of species including crustaceans, cephalopods, fishes, birds, and pinnipeds.

The Effects of Climatic Variability on the Feeding Ecology of the Scalloped Hammerhead Shark

The Effects of Climatic Variability on the Feeding Ecology of the Scalloped Hammerhead Shark

The Effects of Climatic Variability on the Feeding Ecology of the Scalloped Hammerhead Shark (Sphyrna lewini) in the Tropical Eastern Pacific Camila Arnés-Urgellés, Pelayo Salinas-de-León, Etienne Rastoin-Laplane, Leandro Vaca-Pita, Jenifer Suárez-Moncada, Diego Páez-Rosas ABSTRACT: Climatic variability changes ocean productivity and generates systematic cascading effects in marine food webs. Studying the feeding ecology of top predators,

Intensive Commercialization of Endangered Sharks and Rays Along the Coastal Amazon

Intensive Commercialization of Endangered Sharks and Rays Along the Coastal Amazon

Intensive Commercialization of Endangered Sharks and Rays (Elasmobranchii) Along the Coastal Amazon as Revealed by DNA Barcode Thais Martins, Paula Santana, Ítalo Lutz, Raimundo da Silva, Aurycéia Guimarães-Costa, Marcelo Vallinoto, Iracilda Sampaio, Grazielle Evangelista-Gomes ABSTRACT: Elasmobranchs represent a well-defined group, composed of about 1,150 species inhabiting diverse aquatic environments. Currently, several of these species have

Reproductive biology aspects of Alopias pelagicus and A. superciliosus

Reproductive biology aspects of Alopias pelagicus and A. superciliosus

Reproductive biology aspects of Alopias pelagicus and A. superciliosus (Lamniformes: Alopiidae) in the Ecuadorian Pacific Briones-Mendoza J, Carrasco-Puig P, Toala-Franco D. ABSTRACT: The reproductive biology of thresher shark species of the Ecuadorian Pacific was analysed based on 1236 specimens of Alopias pelagicus (711 females and 525 males) and 354 of A. superciliosus (164 females and