Results 21 to 30 of about 6,434 (165)
Heterogeneous conservation of Dlx paralog co-expression in jawed vertebrates. [PDF]
PLoS ONE, 2013 BACKGROUND: The Dlx gene family encodes transcription factors involved in the development of a wide variety of morphological innovations that first evolved at the origins of vertebrates or of the jawed vertebrates.
Mélanie Debiais-Thibaud +8 more
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Observations on the behavior of Schroederichthys chilensis (Carcharhiniformes, Scyliorhinidae)
Revista Peruana de Biología, 2014 Schroederichthys chilensis, the redspotted catshark or chilean catshark, is an endemic species to Peruvian and Chilean waters. Observations on its behavior in the National Reserve System of Guano Islands, Islets, and Capes – Punta San Juan and Paracas ...
Daniel Flores, Grant D. Adams
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Loss of Active Neurogenesis in the Adult Shark Retina
Frontiers in Cell and Developmental Biology, 2021 Neurogenesis is the process by which progenitor cells generate new neurons. As development progresses neurogenesis becomes restricted to discrete neurogenic niches, where it persists during postnatal life.
Ismael Hernández-Núñez +7 more
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Fishes, 2022 The small-spotted catshark, Scyliorhinus canicula, provides an optimal model organism to include chondrichthyans in studies comparing morphology or physiology through vertebrate evolution. In particular, for investigations with ontogenetic aspects, there
Bianka Grunow +2 more
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A shift in anterior–posterior positional information underlies the fin-to-limb evolution
eLife, 2015 The pectoral fins of ancestral fishes had multiple proximal elements connected to their pectoral girdles. During the fin-to-limb transition, anterior proximal elements were lost and only the most posterior one remained as the humerus.
Koh Onimaru +5 more
doaj +1 more source
Oviparous elasmobranch development inside the egg case in 7 key stages. [PDF]
PLoS ONE, 2018 Embryological stages of oviparous elasmobranch during development can be difficult to identify, requiring magnification and/or fixation of an anaesthetized embryo.
Syafiq M Musa +2 more
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Physicochemical and microbiological changes in dried small-spotted catshark (Scyliorhynus canicula): developing an alternative shark-based salted-dried seafood product [PDF]
, 2016 A relatively high proportion of harvested seafood is still wasted due to spoilage, particularly in developing countries, or because they are by-catches or have little economic value, seemingly related to inherent problems linked to unattractive color ...
Aníbal, J. +3 more
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Frontiers in Neuroscience, 2018 The neuropeptide gonadotropin-releasing hormone (GnRH) plays an important role in the control of reproductive functions. Vertebrates possess multiple GnRH forms that are classified into three main groups, namely GnRH1, GnRH2, and GnRH3.
Anne-Laure Gaillard +9 more
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Reduction of elasmobranch by-catch in the hake semipelagic near-bottom longline fishery in the Algarve (Southern Portugal) [PDF]
, 2003 Elasmobranch fish, particularly deep-sea sharks, are the most important component of the by-catch of the hake semipelagic near-bottom 'pedra-e-bola' longline fishery in the Algarve (South Portugal) and most of these fish are discarded. The effects of the
Alheit J +25 more
core +1 more source
Fishes, 2022 Sharks belong to the most primitive group of jawed vertebrates and have some special structural and functional features such as a cartilaginous skeleton, a spiral intestinal valve, and a rectal gland for osmoregulation.
Giampaolo Bosi +3 more
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