Results 21 to 30 of about 5,132 (191)

Prosomeric organization of the hypothalamus in an elasmobranch, the catshark Scyliorhinus canicula. [PDF]

Frontiers in Neuroanatomy, 2015
The hypothalamus has been a central topic in neuroanatomy because of its important physiological functions, but its mature organization remains elusive.
Gabriel-Nicolás eSantos-Durán, Arnaud eMenuet, Ronan eLagadec, Hélène eMayeur, Susana eFerreiro-Galve, Sylvie eMazan, Isabel eRodríguez-Moldes, Eva eCandal   +7 more
doaj   +5 more sources

The catshark genus Scyliorhinus (Chondrichthyes: Carcharhiniformes: Scyliorhinidae): taxonomy, morphology and distribution

Zootaxa, 2019
Soares, Karla D. A., De, Marcelo R. (2019): The catshark genus Scyliorhinus (Chondrichthyes: Carcharhiniformes: Scyliorhinidae): taxonomy, morphology and distribution. Zootaxa 4601 (1): 1-147, DOI: 10.11646/zootaxa.4601.1.
Soares, Karla D. A., De, Marcelo R.
core   +3 more sources

Two Paralogues as They Like It: Conserved and Divergent Evolution of Vertebrate Gcm Genes. [PDF]

Evol Dev
Comparative overview of Gcm1 and Gcm2 paralogues across vertebrates. Gcm2 is conserved in pharyngeal‐derived organs across gnathostomes, whereas Gcm1 shows lineage‐specific diversification from an ancestral pharyngeal context, including secondary loss in teleosts, distinct expression in bichir gills and skin, and broader expression in mammals ...
Shono T, Tatsumi N, Miyake T, Kuraku S, Okabe M.   +4 more
europepmc   +2 more sources

Molecular ontogeny of the stomach in the catshark Scyliorhinus canicula [PDF]

Scientific Reports, 2019
AbstractThe origin of extracellular digestion in metazoans was accompanied by structural and physiological alterations of the gut. These adaptations culminated in the differentiation of a novel digestive structure in jawed vertebrates, the stomach. Specific endoderm/mesenchyme signalling is required for stomach differentiation, involving the growth and
Odete Gonçalves, Renata Freitas, Patrícia Ferreira, Mafalda Araújo, GuangJun Zhang, Sylvie Mazan, Martin J. Cohn, L. Filipe C. Castro, Jonathan M. Wilson   +8 more
  +12 more sources

Shark preferences: Only subtle effects of electromagnetic field exposure and substrate type on small-spotted catshark (Scyliorhinus canicula) behaviour. [PDF]

J Fish Biol
Abstract Offshore wind energy plays a crucial role in the transition to low‐carbon power generation. The expansion of offshore wind farms (OWFs) introduces anthropogenic electromagnetic fields (EMFs) from subsea power cables. Elasmobranchs, including sharks and rays, are sensitive to natural electric and magnetic fields used for navigation and prey ...
Bouwman LJ, Hermans A, Hubert J, Nijland R, Jansen H, Schotanus J, Winter HV.   +6 more
europepmc   +2 more sources

Whole tissue imaging of cellular boundaries at sub-micron resolutions for deep learning cell segmentation: Applications in the analysis of epithelial bending of ectoderm. [PDF]

Dev Dyn
Abstract Background To understand cellular morphology, biologists have relied on traditional optical microscopy of tissues combined with tissue clearing protocols to image structures deep within tissues. Unfortunately, these protocols often struggle to retain cell boundary markers, especially at high enough resolutions necessary for precise cell ...
Norris SCP, Hu JK, Shubin NH.
europepmc   +2 more sources

Evolutionary Transition in the Regulation of Vertebrate Pronephros Development: A New Role for Retinoic Acid

Cells, 2022
The anterior-posterior (AP) axis in chordates is regulated by a conserved set of genes and signaling pathways, including Hox genes and retinoic acid (RA), which play well-characterized roles in the organization of the chordate body plan. The intermediate
Pascal Schmidt, Eva Leman, Ronan Lagadec, Michael Schubert, Sylvie Mazan, Ram Reshef   +5 more
doaj   +1 more source

Developmental genoarchitectonics as a key tool to interpret the mature anatomy of the chondrichthyan hypothalamus according to the prosomeric model

Frontiers in Neuroanatomy, 2022
The hypothalamus is a key vertebrate brain region involved in survival and physiological functions. Understanding hypothalamic organization and evolution is important to deciphering many aspects of vertebrate biology.
Gabriel N. Santos-Durán, Susana Ferreiro-Galve, Sylvie Mazan, Ramón Anadón, Isabel Rodríguez-Moldes, Eva Candal   +5 more
doaj   +1 more source

Tooth morphology of deep-water catsharks of the genus Apristurus (Chondrichthyes: Pentanchidae) in the North Atlantic Ocean. [PDF]

J Fish Biol
Abstract The deep‐water catshark family (Pentanchidae) is the most species‐rich family among extant shark lineages. Within this family, the genus Apristurus is the largest, comprising small, deep‐sea species characterised by elongated bodies and dorso‐ventrally compressed snouts. Five Apristurus species are currently recognised from the North Atlantic,
Seifert J, Moore DM.
europepmc   +2 more sources

Diet and Plastic Ingestion in the Blackmouth Catshark Galeus melastomus, Rafinesque 1810, in Italian Waters

Animals, 2023
Galeus melastomus is the most common Pentanchidae in the Mediterranean Sea. A scavenger and opportunistic feeder, and despite the wide distribution, little is known about its feeding habits in Italian waters.
Giorgia Zicarelli, Chiara Romano, Samira Gallo, Carmen Valentino, Victor Pepe Bellomo, Francesco Luigi Leonetti, Gianni Giglio, Alessandra Neri, Letizia Marsili, Concetta Milazzo, Caterina Faggio, Cecilia Mancusi, Emilio Sperone   +12 more
doaj   +1 more source