Sono e aprendizagem em Octopus insularis
Among invertebrate animals, the class of cephalopods has stood out in research for its remarkable intelligence and learning ability. In particular, octopuses have shown complex behavior regarding the organization of their nervous system, which includes a lobe for learning. These animals also show...
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| Formato: | Dissertação |
| Idioma: | pt_BR |
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Universidade Federal do Rio Grande do Norte
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| Endereço do item: | https://repositorio.ufrn.br/handle/123456789/52343 |
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| Resumo: | Among invertebrate animals, the class of cephalopods has stood out in research for its
remarkable intelligence and learning ability. In particular, octopuses have shown complex
behavior regarding the organization of their nervous system, which includes a lobe for
learning. These animals also show, as already known in vertebrates, learning skills by touch
and observation. In the literature, there are studies carried out with the species O. vulgaris in
which it was verified that octopuses are able to change behavior based on the results of
experiments, demonstrating that they can associate information and reproduce adaptive
behavioral responses. Sleep is a behavior that occurs in several taxa of the animal kingdom
and has already been extensively studied in vertebrates, especially in mammals and birds.
However, among invertebrates, in the case of octopuses, there are behavioral and
electrophysiological studies that point to the existence of at least two sleep phases. Among
the objectives of this study, we seek to relate the learning capacity of these animals with the
quiet and active sleep patterns, as well as to investigate and describe in detail, through a
comprehensive behavioral quantification, a learning process in the species Octopus insularis.
In order to do that, we submitted the animals to a task called “Russian Dolls”. Using video
recordings, we are assessing whether the young adults of this species are capable of learning
a new task, which requires the animals to sequentially open up to three different jars, one
inside the other, one smaller than the other, with a reward (crab or shrimp) inside the smaller
jar. We observed that the octopuses are able to open the 3 types of jars, often opening each of
them in many different ways, which shows the cognitive ability and behavioral versatility of
these animals, showing a significant value to the bigger jar step. Regarding the sleep
monitoring, it was observed that the learning task caused changes in the duration of the active
sleep episodes before and after the task. |
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