Publication: Organización neuroanatómica de los sistemas catecolaminérgicos, serotoninérgico, nitrérgico y orexinérgico en el sistema nervioso central de los peces holósteos
Loading...
Files
Official URL
Full text at PDC
Publication Date
2021-02-19
Authors
Advisors (or tutors)
Editors
Journal Title
Journal ISSN
Volume Title
Publisher
Universidad Complutense de Madrid
Citations
Exportar
Abstract
Los peces holósteos forman un pequeño grupo monofilético de peces actinopterigios que es actualmente considerado como el grupo hermano de los teleósteos, junto con los cuales constituyen el grupo de peces neopterigios. Los peces holósteos viven, generalmente, en aguas dulces de América del norte y central, y están formados por ocho especies agrupadas en tres géneros, y éstos a su vez en dos órdenes: Lepisosteiformes (siete especies entre los géneros Lepisosteus y Atractosteus) y Amiiformes (una especie, Amia calva). A diferencia de los teleósteos, el sistema nervioso central (SNC) de los holósteos no ha sido estudiado en profundidad, a pesar de su interesante posición filogenética como el grupo de peces más cercano a los teleósteos. Durante la segunda mitad del siglo XX se realizaron algunos trabajos neuroanatómicos acerca de la organización general del SNC de estos peces, pero sus sistemas de neurotransmisión aún no se conocen lo suficiente. Por ello, se ha estudiado la organización neuroanatómica de los sistemas de neurotransmisión catecolaminérgicos, serotoninérgico, nitrérgico y orexinérgico, realizando además un análisis comparado con el resto de grupos de peces actinopterigios, para tratar de entender los cambios evolutivos en estos grupos de peces, y con el resto de grupos de vertebrados, para establecer posibles homologías y evaluar los caracteres específicos de los peces holósteos y los que se han conservado en la evolución de los vertebrados...
Holostean fishes form a small monophyletic group of actinopterygian fishes that is currently considered as the sister group to teleosts, along with which they constitute the neopterygian group of fishes. Holostean fishes generally live in fresh waters of North and Central America, and consist of eight species grouped into three genera, and these in turn in two orders: Lepisosteiformes (seven species between the genera Lepisosteus and Atractosteus) and Amiiformes (one species, Amia calva). Unlike teleosts, the central nervous system (CNS) of holosteans has not been much studied in depth, despite its interesting phylogenetic position as the closest group of fish to teleosts. During the second half of the 20th century some neuroanatomical work was done on the general organization of the CNS of these fish, but their neurotransmission systems are not yet sufficiently known. Therefore, the neuroanatomical organization of the catecholaminergic, serotonergic, nitrergic and orexinergic neurotransmission systems has been studied, comparing the results with the rest of actinopterygian fish groups, in order to try to understand the evolutionary changes in these fish groups, and with the rest of the vertebrate groups, in order to establish possible homologies and assess the specific characteristics of the holostean fishes and those that have been conserved in the evolution of vertebrates...
Holostean fishes form a small monophyletic group of actinopterygian fishes that is currently considered as the sister group to teleosts, along with which they constitute the neopterygian group of fishes. Holostean fishes generally live in fresh waters of North and Central America, and consist of eight species grouped into three genera, and these in turn in two orders: Lepisosteiformes (seven species between the genera Lepisosteus and Atractosteus) and Amiiformes (one species, Amia calva). Unlike teleosts, the central nervous system (CNS) of holosteans has not been much studied in depth, despite its interesting phylogenetic position as the closest group of fish to teleosts. During the second half of the 20th century some neuroanatomical work was done on the general organization of the CNS of these fish, but their neurotransmission systems are not yet sufficiently known. Therefore, the neuroanatomical organization of the catecholaminergic, serotonergic, nitrergic and orexinergic neurotransmission systems has been studied, comparing the results with the rest of actinopterygian fish groups, in order to try to understand the evolutionary changes in these fish groups, and with the rest of the vertebrate groups, in order to establish possible homologies and assess the specific characteristics of the holostean fishes and those that have been conserved in the evolution of vertebrates...
Description
Tesis inédita de la Universidad Complutense de Madrid, Facultad de Ciencias Biológicas, leída el 14-02-2020