Mushroom bodies in crustaceans: Insect-like organization in the caridid shrimp Lebbeus groenlandicus

Marcel E. Sayre, Nicholas J Strausfeld

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Paired centers in the forebrain of insects, called the mushroom bodies, have become the most investigated brain region of any invertebrate due to novel genetic strategies that relate unique morphological attributes of these centers to their functional roles in learning and memory. Mushroom bodies possessing all the morphological attributes of those in dicondylic insects have been identified in mantis shrimps, basal hoplocarid crustaceans that are sister to Eumalacostraca, the most species-rich group of Crustacea. However, unless other examples of mushroom bodies can be identified in Eumalacostraca, the possibility is that mushroom body-like centers may have undergone convergent evolution in Hoplocarida and are unique to this crustacean lineage. Here, we provide evidence that speaks against convergent evolution, describing in detail the paired mushroom bodies in the lateral protocerebrum of a decapod crustacean, Lebbeus groenlandicus, a species belonging to the infraorder Caridea, an ancient lineage of Eumalacostraca.

Original languageEnglish (US)
JournalJournal of Comparative Neurology
DOIs
StatePublished - Jan 1 2019

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Mushroom Bodies
Insects
Decapoda (Crustacea)
Crustacea
Invertebrates
Prosencephalon
Learning
Brain

Keywords

  • evolution
  • hemiellipsoid body
  • homology
  • mushroom body
  • Pancrustacea
  • RRID:AB_1157911
  • RRID:AB_1566510
  • RRID:AB_301787
  • RRID:AB_477,019
  • RRID:AB_528479
  • RRID:AB_572263
  • RRID:AB_572268

ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

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abstract = "Paired centers in the forebrain of insects, called the mushroom bodies, have become the most investigated brain region of any invertebrate due to novel genetic strategies that relate unique morphological attributes of these centers to their functional roles in learning and memory. Mushroom bodies possessing all the morphological attributes of those in dicondylic insects have been identified in mantis shrimps, basal hoplocarid crustaceans that are sister to Eumalacostraca, the most species-rich group of Crustacea. However, unless other examples of mushroom bodies can be identified in Eumalacostraca, the possibility is that mushroom body-like centers may have undergone convergent evolution in Hoplocarida and are unique to this crustacean lineage. Here, we provide evidence that speaks against convergent evolution, describing in detail the paired mushroom bodies in the lateral protocerebrum of a decapod crustacean, Lebbeus groenlandicus, a species belonging to the infraorder Caridea, an ancient lineage of Eumalacostraca.",
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