Mushroom body evolution demonstrates homology and divergence across Pancrustacea
Strausfeld, Nicholas James ; Wolff, Gabriella Hanna and Sayre, Marcel Ethan LU
(2020)
In eLife
9.
- Abstract
Descriptions of crustacean brains have focused mainly on three highly derived lineages of malacostracans: the reptantian infraorders represented by spiny lobsters, lobsters, and crayfish. Those descriptions advocate the view that dome- or cap-like neuropils, referred to as 'hemiellipsoid bodies,' are the ground pattern organization of centers that are comparable to insect mushroom bodies in processing olfactory information. Here we challenge the doctrine that hemiellipsoid bodies are a derived trait of crustaceans, whereas mushroom bodies are a derived trait of hexapods. We demonstrate that mushroom bodies typify lineages that arose before Reptantia and exist in Reptantia thereby indicating that the mushroom body, not the hemiellipsoid... (More)
Descriptions of crustacean brains have focused mainly on three highly derived lineages of malacostracans: the reptantian infraorders represented by spiny lobsters, lobsters, and crayfish. Those descriptions advocate the view that dome- or cap-like neuropils, referred to as 'hemiellipsoid bodies,' are the ground pattern organization of centers that are comparable to insect mushroom bodies in processing olfactory information. Here we challenge the doctrine that hemiellipsoid bodies are a derived trait of crustaceans, whereas mushroom bodies are a derived trait of hexapods. We demonstrate that mushroom bodies typify lineages that arose before Reptantia and exist in Reptantia thereby indicating that the mushroom body, not the hemiellipsoid body, provides the ground pattern for both crustaceans and hexapods. We show that evolved variations of the mushroom body ground pattern are, in some lineages, defined by extreme diminution or loss and, in others, by the incorporation of mushroom body circuits into lobeless centers. Such transformations are ascribed to modifications of the columnar organization of mushroom body lobes that, as shown in Drosophila and other hexapods, contain networks essential for learning and memory.
(Less)
- author
- Strausfeld, Nicholas James
; Wolff, Gabriella Hanna
and Sayre, Marcel Ethan
LU
- organization
- publishing date
- 2020
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- divergence, evolution, evolutionary biology, ground pattern organization, learning and memory, mushroom bodies, neuroscience, Pancrustacea
- in
- eLife
- volume
- 9
- publisher
- eLife Sciences Publications
- external identifiers
-
- pmid:32124731
- scopus:85080980937
- ISSN
- 2050-084X
- DOI
- 10.7554/eLife.52411
- language
- English
- LU publication?
- yes
- id
- 36204999-1b52-4694-8dcf-2b724f097d20
- date added to LUP
- 2020-03-17 13:41:07
- date last changed
- 2024-04-03 02:58:25
@article{36204999-1b52-4694-8dcf-2b724f097d20,
abstract = {{<p>Descriptions of crustacean brains have focused mainly on three highly derived lineages of malacostracans: the reptantian infraorders represented by spiny lobsters, lobsters, and crayfish. Those descriptions advocate the view that dome- or cap-like neuropils, referred to as 'hemiellipsoid bodies,' are the ground pattern organization of centers that are comparable to insect mushroom bodies in processing olfactory information. Here we challenge the doctrine that hemiellipsoid bodies are a derived trait of crustaceans, whereas mushroom bodies are a derived trait of hexapods. We demonstrate that mushroom bodies typify lineages that arose before Reptantia and exist in Reptantia thereby indicating that the mushroom body, not the hemiellipsoid body, provides the ground pattern for both crustaceans and hexapods. We show that evolved variations of the mushroom body ground pattern are, in some lineages, defined by extreme diminution or loss and, in others, by the incorporation of mushroom body circuits into lobeless centers. Such transformations are ascribed to modifications of the columnar organization of mushroom body lobes that, as shown in Drosophila and other hexapods, contain networks essential for learning and memory.</p>}},
author = {{Strausfeld, Nicholas James and Wolff, Gabriella Hanna and Sayre, Marcel Ethan}},
issn = {{2050-084X}},
keywords = {{divergence; evolution; evolutionary biology; ground pattern organization; learning and memory; mushroom bodies; neuroscience; Pancrustacea}},
language = {{eng}},
publisher = {{eLife Sciences Publications}},
series = {{eLife}},
title = {{Mushroom body evolution demonstrates homology and divergence across Pancrustacea}},
url = {{http://dx.doi.org/10.7554/eLife.52411}},
doi = {{10.7554/eLife.52411}},
volume = {{9}},
year = {{2020}},
}