AuthorWolff, Gabriella Hannah
Thoen, Hanne Halkinrud
Sayre, Marcel E
Strausfeld, Nicholas James
AffiliationUniv Arizona, Sch Mind Brain & Behav, Dept Neurosci
MetadataShow full item record
PublisherELIFE SCIENCES PUBLICATIONS LTD
CitationAn insect-like mushroom body in a crustacean brain 2017, 6 eLife
Rights© 2017, Wolff et al. This article is distributed under the terms of the Creative Commons Attribution License.
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AbstractMushroom bodies are the iconic learning and memory centers of insects. No previously described crustacean possesses a mushroom body as defined by strict morphological criteria although crustacean centers called hemiellipsoid bodies, which serve functions in sensory integration, have been viewed as evolutionarily convergent with mushroom bodies. Here, using key identifiers to characterize neural arrangements, we demonstrate insect-like mushroom bodies in stomatopod crustaceans (mantis shrimps). More than any other crustacean taxon, mantis shrimps display sophisticated behaviors relating to predation, spatial memory, and visual recognition comparable to those of insects. However, neuroanatomy-based cladistics suggesting close phylogenetic proximity of insects and stomatopod crustaceans conflicts with genomic evidence showing hexapods closely related to simple crustaceans called remipedes. We discuss whether corresponding anatomical phenotypes described here reflect the cerebral morphology of a common ancestor of Pancrustacea or an extraordinary example of convergent evolution.
NoteOpen Access journal / Paid Open Access after January 2017*
VersionFinal published version