Mostafa, Alsayed Alsoudy Mohamed (2021) Octopus Senses: From Genes To Behavior. [Tesi di dottorato]


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Item Type: Tesi di dottorato
Resource language: English
Title: Octopus Senses: From Genes To Behavior
Mostafa, Alsayed Alsoudy
Date: 12 July 2021
Number of Pages: 150
Institution: Università degli Studi di Napoli Federico II
Department: Biologia
Dottorato: Biologia
Ciclo di dottorato: 33
Coordinatore del Corso di dottorato:
Date: 12 July 2021
Number of Pages: 150
Keywords: Octopus vulgaris, olfaction, vision, chemo-tactile sensory perception, adult neurogenesis, the sucker arm, optic lobe
Settori scientifico-disciplinari del MIUR: Area 05 - Scienze biologiche > BIO/05 - Zoologia
Date Deposited: 23 Jul 2021 10:51
Last Modified: 07 Jun 2023 10:41

Collection description

Octopuses are intelligent, soft-bodied animals, have complex nervous systems with remarkable cognitive abilities and keen senses that perform reliably in a variety of visual and chemo-tactile learning tasks for exploring and sensing the environment. They have the largest nervous system of any invertebrate, with 500 million neurons distributed centrally and peripherally throughout the body. The nervous system of common octopus (Octopus vulgaris), is comprised of central lobes surrounding the esophagus and a pair of optic lobes that together contain approximately a third of the neurons, with the remaining two-thirds distributed within the arms (e.g. in the large axial nerve cords that extends along the center of each of their eight arms). The most obvious characteristic feature of an octopus is its eight long and flexible arms, but these pose a great challenge for achieving the level of motor and sensory information processing necessary for their behaviors. In addition, octopuses have a significant number of lobes of the nervous system dedicated to visual, tactile, and chemosensory perception. In this study, I aimed to provide a comprehensive view on the genetic bases for the tactile form of olfaction, extraocular photoreception in the sucker, localization of photoreceptors molecules in the optic lobe of O. vulgaris, as well as to identify the major genes are involved in the adult neurogenesis and then the cognitive system in O. vulgaris. I have applied a developed whole-mount in situ hybridization, real-time qPCR, and bioinformatic methods, supported by behavioral evidences to provide a comprehensive view on these processes in O. vulgaris, highlight how genomic innovation translates into organismal organization novelties. Results achieved contributed to some extent, and promoted interest in this field.


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