The reniform body: An integrative lateral protocerebral neuropil complex of Eumalacostraca identified in Stomatopoda and Brachyura

Hanne Halkinrud Thoen, Gabriella Hannah Wolff, Justin Marshall, Marcel E. Sayre, Nicholas James Strausfeld

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

Mantis shrimps (Stomatopoda) possess in common with other crustaceans, and with Hexapoda, specific neuroanatomical attributes of the protocerebrum, the most anterior part of the arthropod brain. These attributes include assemblages of interconnected centers called the central body complex and in the lateral protocerebra, situated in the eyestalks, paired mushroom bodies. The phenotypic homologues of these centers across Panarthropoda support the view that ancestral integrative circuits crucial to action selection and memory have persisted since the early Cambrian or late Ediacaran. However, the discovery of another prominent integrative neuropil in the stomatopod lateral protocerebrum raises the question whether it is unique to Stomatopoda or at least most developed in this lineage, which may have originated in the upper Ordovician or early Devonian. Here, we describe the neuroanatomical structure of this center, called the reniform body. Using confocal microscopy and classical silver staining, we demonstrate that the reniform body receives inputs from multiple sources, including the optic lobe's lobula. Although the mushroom body also receives projections from the lobula, it is entirely distinct from the reniform body, albeit connected to it by discrete tracts. We discuss the implications of their coexistence in Stomatopoda, the occurrence of the reniform body in another eumalacostracan lineage and what this may mean for our understanding of brain functionality in Pancrustacea.

Original languageEnglish (US)
Pages (from-to)1079-1094
Number of pages16
JournalJournal of Comparative Neurology
Volume528
Issue number7
DOIs
StatePublished - May 1 2020

Keywords

  • Eumalacostraca
  • RRID AB_ 477019
  • RRID AB_1157911
  • RRID AB_301787
  • RRID AB_528479
  • RRID AB_572263
  • RRID AB_572268
  • brain
  • evolution
  • homology
  • sensory integration

ASJC Scopus subject areas

  • Neuroscience(all)

Fingerprint Dive into the research topics of 'The reniform body: An integrative lateral protocerebral neuropil complex of Eumalacostraca identified in Stomatopoda and Brachyura'. Together they form a unique fingerprint.

  • Cite this