Results 51 to 60 of about 16,548 (278)

Chondrichthyes species in deep waters of the Mediterranean Sea

Scientia Marina, 2004
Data collected during the DESEAS survey carried out in three areas of the Mediterranean Sea (Balearic Sea, western and eastern Ionian Sea) were used to describe the distribution and abundance of chondrichthyes species at depths between 600 and 4000 m.
Letizia Sion, Anna Bozzano, Gianfranco D’Onghia, Francesca Capezzuto, Michele Panza   +4 more
doaj   +1 more source

Growth and reproduction in captivity unveils remarkable life-history plasticity in the smallnose fanskate, Sympterygia bonapartii (Chondrichthyes: Rajiformes) [PDF]

, 2018
Analizamos el crecimiento y la reproducción de ejemplares de raya marmorada, Sympterygia bonapartii nacidas en cautiverio. Se obtuvieron ovicápsulas a partir de la oviposición de dos hembras capturadas en la naturaleza y mantenidas en el Acuario Temaikèn.
Abraham, Carolina, Argemi, Federico, Jañez, Julieta, Lucifora, Luis Omar, Meijide, Fernando Javier   +4 more
core   +3 more sources

Late Devonian (Famennian) Chondrichthyes from Mexico [PDF]

Journal of Vertebrate Paleontology, 2019
The Paleozoic vertebrate fossil record from Mexico is very scarce and strongly biased by rock exposure, composed mainly of upper Paleozoic (Carboniferous and Permian) outcrops (e.g., Sánchez-Zavala et al., 1999; Poole et al., 2005; González- Rodríguez et al., 2013).
Carlos Martínez-Pérez, Pilar Navas-Parejo, R. Aaron Lara-Peña, Humberto G. Ferrón, Juan Palafox-Reyes, Héctor Botella   +5 more
openaire   +2 more sources

Prioritising research on endocrine disruption in the marine environment: a global perspective

Biological Reviews, EarlyView.
ABSTRACT A healthy ocean is a crucial life support system that regulates the global climate, is a source of oxygen and supports major economic activities. A vast and understudied biodiversity from micro‐ to macro‐organisms is integral to ocean health.
Patricia I. S. Pinto, Angelica Miglioli, Carlie A. LaLone, Lisa Baumann, Alice Baynes, Mélanie Blanc‐Legendre, Ibon Cancio, Xavier Cousin, ZhiChao Dang, Rémi Dumollard, Alex T. Ford, Christopher Green, Taisen Iguchi, Philippa Kearney, Thomas Knigge, Christophe Minier, Tiphaine Monsinjon, Marta S. Monteiro, Joachim Sturve, Haruna Watanabe, Hiroshi Yamamoto, Gerald Ankley, Deborah M. Power, Ioanna Katsiadaki   +23 more
wiley   +1 more source

Pigmentation disorders in three specimens of spiny dogfish, Squalus acanthias Linnaeus, 1758, from the Gulf of Venice, northern Adriatic Sea

Journal of Fish Biology, EarlyView.
Abstract This study reports three cases of pigmentation disorders in Squalus acanthias from the Gulf of Venice. Two specimens exhibited spotless phenotypes, whereas one exhibited hypermelanism. Morphological assessments were conducted for two individuals, alongside genetic analysis of mitochondrial genes to determine phylogeographic relationships. Both
Bernardi Jacopo, Finotto Licia, Catalano Giusy, Crobe Valentina, Cariani Alessia, Ferrari Alice   +5 more
wiley   +1 more source

Internal organs and body tissues of free-swimming whale sharks (Rhincodon typus) imaged using underwater ultrasound

Frontiers in Marine Science
Ultrasound imaging can be used as an effective tool to measure the reproductive status and condition of sharks. This usually requires restraint of the subject, which is not feasible in the wild when the target species is of conservation concern and very ...
M. G. Meekan, F. Thompson, K. Brooks, R. Matsumoto, K. Murakumo, E. Lester, A. Dove, B. Hopper   +7 more
doaj   +1 more source

Mineralization of the Callorhinchus Vertebral Column (Holocephali; Chondrichthyes) [PDF]

Frontiers in Genetics, 2020
Members of the Chondrichthyes (Elasmobranchii and Holocephali) are distinguished by their largely cartilaginous endoskeletons, which comprise an uncalcified core overlain by a mineralized layer; in the Elasmobranchii (sharks, skates, rays) most of this mineralization takes the form of calcified polygonal tiles known as tesserae. In
Pears, Jacob B., Johanson, Z., Trinajstic, Kate, Dean, M.N., Boisvert, Catherine   +4 more
openaire   +5 more sources

The dental plate on bichir pectoral fins: A unique dermal skeletal element bearing individual odontodes with tooth‐like replacement

Journal of Anatomy, EarlyView.
Pectoral fins of bichirs encompass the so‐called dental plates – unique dermal skeletal elements with individual odontodes identical to the oral teeth. Abstract The dermal skeleton appeared early in vertebrate evolution in the form of mineralized skin denticles composed of tooth‐like units—odontodes.
Tomáš Suchánek, Ann Huysseune, Robert Cerny   +2 more
wiley   +1 more source

Holocephali de la Formación Irati (Cuenca del Paraná), Brasil: Origen, Consideraciones Paleogeográficas y Paleoambientales

Estudios Geologicos, 2023
La Formación Irati (Pérmico, Cisuraliano) tiene varios tipos de vertebrados acuáticos, incluyendo especies de Chondrichthyes. Se reconocen dos miembros de Irati, Assistência (superior) y Taquaral (inferior).
Artur Chahud
doaj   +1 more source

Selachian faunas from the earliest Cretaceous Purbeck Group of Dorset, southern England. [PDF]

, 2002
Abundant selachian remains have been recovered from a number of horizons through the Purbeck Group at Durlston Bay, Lulworth Cove and Stair Hole in southern England.
Rees, J., Underwood, Charlie J.
core