Characterization of the Brain of the Red Mayan Octopus (Octopus maya Voss and Solis, 1966)

Vergara-Ovalle, Fabian; Gonzalez-Navarrete, A.; Sánchez-Castillo, Hugo

doi:10.1134/s0022093022050118

Cited by 1 publication

(2 citation statements)

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“…Hence, we propose that this task might involve both VL-SF and Bu-IF systems. This is supported by the histological observations in some octopuses’ brain atlas (Jung et al 2018 ; Vergara-Ovalle et al 2022 ), as there is a neuronal connection between the superior frontal lobe and the inferior frontal lobe. This might conform to a physical substrate for the connectivity of the possible systems required for O. maya to remember the familiar object.…”

Section: Discussionsupporting

confidence: 52%

“…These results suggest that O. maya goes through a maturation stage, during which more complex responses are acquired, allowing better discrimination with the objects to be explored. This should be reflected in the post-hatching nervous system maturation of the species (Vergara-Ovalle et al 2022 ). Something similar was found by Anderson et al 2004 during NOR in rats.…”

Section: Discussionmentioning

confidence: 99%

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Novel object recognition in Octopus maya

et al. 2023

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The Novel Object Recognition task (NOR) is widely used to study vertebrates' memory. It has been proposed as an adequate model for studying memory in different taxonomic groups, allowing similar and comparable results. Although in cephalopods, several research reports could indicate that they recognize objects in their environment, it has not been tested as an experimental paradigm that allows studying different memory phases. This study shows that two-month-old and older Octopus maya subjects can differentiate between a new object and a known one, but one-month-old subjects cannot. Furthermore, we observed that octopuses use vision and tactile exploration of new objects to achieve object recognition, while familiar objects only need to be explored visually. To our knowledge, this is the first time showing an invertebrate performing the NOR task similarly to how it is performed in vertebrates. These results establish a guide to studying object recognition memory in octopuses and the ontological development of that memory.

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Section: Discussionsupporting

confidence: 52%

Section: Discussionmentioning

confidence: 99%