Banca de QUALIFICAÇÃO: SYLVIA LIMA DE SOUZA MEDEIROS

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
DISCENTE : SYLVIA LIMA DE SOUZA MEDEIROS
DATA : 09/03/2018
HORA: 16:00
LOCAL: Sala de Aula do PPg em Psicobiologia
TÍTULO:

Description of sleep and learning behavior in two octopus species: Octopus vulgaris and Octopus insularis

PALAVRAS-CHAVES:

Octopus; sleep; learning; Octopus vulgaris; Octopus insularis.

PÁGINAS: 18
GRANDE ÁREA: Ciências Humanas
ÁREA: Psicologia
RESUMO:

Sleep is a behavior that can be seen in several taxa of the animal kingdom, suggesting that its origin occurred primitively in the evolutionary chain of the metazoa. Although it is a well studied behavior in vertebrates, mainly in mammals and birds, it is known that some invertebrates also show this state of quiescence.  Octopus is one of the invertebrates in which this behavior is expressed in a complex way, with behavioral and electrophysiological records that point to the existence of at least two sleep stages. In addition, octopuses have the most complex nervous system among invertebrates, having a brain with specific lobes for learning. It raises the question whether these two issues (sleep and learning) could be linked in these animals. For example, there has been a record that the vertical lobe (important for learning) increases its activity while the animal is in this resting state. However, to answer this question, more studies are needed on the sleep and learning in these animals. This research aims to investigate and describe in detail, through behavioral aspects, how the sleep of Octopus vulgaris and Octopus insularis occurs. In addition, it also aims to evaluate the learning process in both species through the performance of these animals when executing the tasks of opening three types of jars, by the analyses of the way and the time they spend to perform the task. Preliminary results showed that there are behavioral changes during the sleep state of O. vulgaris. Some of them have already been cited in the literature, such as pale and half and half body pattern, narrow or completely closed eye pupils, and others that have not been yet described for this species, such as body pattern alteration to dark color and movement of the eyes.  Regarding learning, it was found that the octopuses were able to open the three jars types and open the same jar in different manners, which emphasizes the behavioral and cognitive versatility of these animals.

MEMBROS DA BANCA:
Presidente - 1660044 - SIDARTA TOLLENDAL GOMES RIBEIRO
Interno - 4363493 - EXPEDITO SILVA DO NASCIMENTO JUNIOR