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The eyes of Macrosoma sp. (Lepidoptera: Hedyloidea): a nocturnal butterfly with superposition optics.

Jack, JE; Johnsson, SE; Brown, SG and Warrant, Eric LU (2007) In Arthropod Structure & Development 36(1). p.11-22
Abstract
The visual system of nocturnal Hedyloidea butterflies was investigated for the first time, using light and electron microscopy. This study was undertaken to determine whether hedylids possess the classic superposition eye design characteristic of most moths, or apposition eyes of true butterflies (Papilionoidea), and, to gain insights into the sensory ecology of the Hedyloidea. We show that Macrosoma heliconiaria possesses a superposition-type visual mechanism, characterized by long cylindrical crystalline cones, a lack of corneal processes, 8 constricted retinular sense cells, rhabdoms separated from the crystalline cones forming a translucent ‘clear zone’, and tight networks of trachea that form a tapetum proximal to the retina and which... (More)
The visual system of nocturnal Hedyloidea butterflies was investigated for the first time, using light and electron microscopy. This study was undertaken to determine whether hedylids possess the classic superposition eye design characteristic of most moths, or apposition eyes of true butterflies (Papilionoidea), and, to gain insights into the sensory ecology of the Hedyloidea. We show that Macrosoma heliconiaria possesses a superposition-type visual mechanism, characterized by long cylindrical crystalline cones, a lack of corneal processes, 8 constricted retinular sense cells, rhabdoms separated from the crystalline cones forming a translucent ‘clear zone’, and tight networks of trachea that form a tapetum proximal to the retina and which also surround the rhabdoms to form a tracheal sheath. Dark-adapted individuals of M. heliconiaria, M. conifera, and M. rubidinarea exhibited distal retinular pigment migration, forming an eye glow. Correspondingly, light-exposure induced pigment to migrate proximally, causing the eye glow to be replaced by a dark pseudopupil. Other characteristics of the visual system, including relative eye size, facet size, and external morphology of the optic lobes, are mostly ‘moth like’ and correlate with an active, nocturnal lifestyle. The results are discussed in relation to the evolution of lepidopteran eyes, and the sensory ecology of this poorly understood butterfly superfamily. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Vision, Superposition, Evolution, Compound eyes, Sensory, Hedylidae
in
Arthropod Structure & Development
volume
36
issue
1
pages
11 - 22
publisher
Elsevier
external identifiers
  • wos:000243283300002
  • scopus:33845316394
ISSN
1467-8039
DOI
10.1016/j.asd.2006.07.001
language
English
LU publication?
yes
id
f1655adb-0da6-4281-a0fe-2a5d938bba75 (old id 751903)
date added to LUP
2007-12-19 15:06:18
date last changed
2017-01-01 07:01:10
@article{f1655adb-0da6-4281-a0fe-2a5d938bba75,
  abstract     = {The visual system of nocturnal Hedyloidea butterflies was investigated for the first time, using light and electron microscopy. This study was undertaken to determine whether hedylids possess the classic superposition eye design characteristic of most moths, or apposition eyes of true butterflies (Papilionoidea), and, to gain insights into the sensory ecology of the Hedyloidea. We show that Macrosoma heliconiaria possesses a superposition-type visual mechanism, characterized by long cylindrical crystalline cones, a lack of corneal processes, 8 constricted retinular sense cells, rhabdoms separated from the crystalline cones forming a translucent ‘clear zone’, and tight networks of trachea that form a tapetum proximal to the retina and which also surround the rhabdoms to form a tracheal sheath. Dark-adapted individuals of M. heliconiaria, M. conifera, and M. rubidinarea exhibited distal retinular pigment migration, forming an eye glow. Correspondingly, light-exposure induced pigment to migrate proximally, causing the eye glow to be replaced by a dark pseudopupil. Other characteristics of the visual system, including relative eye size, facet size, and external morphology of the optic lobes, are mostly ‘moth like’ and correlate with an active, nocturnal lifestyle. The results are discussed in relation to the evolution of lepidopteran eyes, and the sensory ecology of this poorly understood butterfly superfamily.},
  author       = {Jack, JE and Johnsson, SE and Brown, SG and Warrant, Eric},
  issn         = {1467-8039},
  keyword      = {Vision,Superposition,Evolution,Compound eyes,Sensory,Hedylidae},
  language     = {eng},
  number       = {1},
  pages        = {11--22},
  publisher    = {Elsevier},
  series       = {Arthropod Structure & Development},
  title        = {The eyes of Macrosoma sp. (Lepidoptera: Hedyloidea): a nocturnal butterfly with superposition optics.},
  url          = {http://dx.doi.org/10.1016/j.asd.2006.07.001},
  volume       = {36},
  year         = {2007},
}