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Growth trajectories of prenatal embryos of the frilled shark
Growth trajectories of prenatal embryos of the deep sea shark Chlamydoselachus anguineus (Chondrichthyes) A. López‐Romero Faviel, Klimpfinger Claudia, Tanaka Sho, Kriwet Jürgen ABSTRACT: Chlamydoselachus anguineus, Garman 1884, commonly called the frilled shark, is a deep sea shark species occurring up to depths of 1300 m. It is assumed to represent an ancient morphotype of sharks (e.g.,
Male mate choice in the spot-tail shark Carcharhinus sorrah
Male mate choice in the spot-tail shark Carcharhinus sorrah: are males choosy or opportunistic? Dareen Almojil ABSTRACT: Male mate choice has been documented in different taxa including insects, lizards, fish, birds and mammals. However, in sharks, male mate choice is not clearly reported but field observations suggest that it is probable. In this study, I
Near equal compressibility of liver oil and seawater minimises buoyancy changes in deep-sea sharks and chimaeras
Near equal compressibility of liver oil and seawater minimises buoyancy changes in deep-sea sharks and chimaeras Imants G. Priede, Rhoderick W. Burgass, Manolis Mandalakis, Apostolos Spyros, Petros Gikas, Finlay Burns, Jim Drewery ABSTRACT: Whereas upper ocean pelagic sharks are negatively buoyant and must swim continuously to generate lift from their fins, deep-sea sharks float or
First record of the marbled ray from Greece
First record of the marbled ray, Dasyatis marmorata (Elasmobranchii: Dasyatidae), from Greece (central Aegean Sea) Archontia Chatzispyrou, Chrysoula Gubili, Maria Laiaki, Danai Mantopoulou-Palouka, Stefanos Kavadas ABSTRACT: Currently, seven dasyatid species have been described in the Mediterranean Sea: Bathytoshia lata, Dasyatis marmorata, Dasyatis pastinaca, Dasyatis tortonesei, Himantura uarnak, Pteroplatytrygon violacea and Taeniura grabata. Papaconstantinou (2014) listed
Comparative anatomy of the clasper of catsharks
Comparative anatomy of the clasper of catsharks and its phylogenetic implications (Chondrichthyes: Carcharhiniformes: Scyliorhinidae) Karla D. A. Soares ABSTRACT: The presence of claspers is one of the main characteristics of the cartilaginous fishes, but its variations across taxa have received limited use in shark systematics and have generally been neglected in descriptions of species. Clasper
New insights into the migration patterns of the scalloped hammerhead shark
New insights into the migration patterns of the scalloped hammerhead shark Sphyrna lewini based on vertebral microchemistry Claire Coiraton, Felipe Amezcua , James T. Ketchum ABSTRACT: The scalloped hammerhead shark Sphyrna lewini is a migratory species that exhibits complex patterns of spatial organization associated with the use of both coastal and oceanic habitats. Information about
Natural tags identify nursery origin of a coastal elasmobranch Carcharhinus leucas
Natural tags identify nursery origin of a coastal elasmobranch Carcharhinus leucas Thomas C. TinHan, Shannon J. O’Leary, David S. Portnoy, Jay R. Rooker, Carey G. Gelpi, R. J. David Wells ABSTRACT: Traditional methods for evaluating the importance of elasmobranch nursery habitats have focused on estimating densities or abundances of juveniles within individual nurseries; however, rates