Novel object recognition in Octopus maya

Author:

Vergara-Ovalle Fabian,Ayala-Guerrero Fructuoso,Rosas Carlos,Sánchez-Castillo HugoORCID

Abstract

AbstractThe 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.

Funder

DGAPA-PAPIIT

Publisher

Springer Science and Business Media LLC

Subject

Experimental and Cognitive Psychology,Ecology, Evolution, Behavior and Systematics

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