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The development of the compound eye of Penaeus duorarum (Crustacea:decapoda)

Elofsson, Rolf LU (1969) In Zeitschrift für Zellforschung und mikroskopische Anatomie1948-01-01+01:001974-01-01+01:00 97. p.323-350
Abstract
The development of the compound eyes and nervous system of the penaeid shrimp,Penaeus duorarum, from the first nauplius to the first postlarva, has been studied. The first anlage of the compound eyes is a pair of optic discs on the front of the animal. These increase in size through cell-division until the second protozoea stage, where the eye-stalks appear with ommatidia and optic neuropiles developed. The original neuroectoderm of the optic discs is retained in the shape of a proliferation zone throughout the life of the animal. From the optic discs, develop the ommatidia, the lamina ganglionaris, and the medulla externa. The medullae interna and terminalis develop from cells coming from the brain anlage. From the second protozoea and... (More)
The development of the compound eyes and nervous system of the penaeid shrimp,Penaeus duorarum, from the first nauplius to the first postlarva, has been studied. The first anlage of the compound eyes is a pair of optic discs on the front of the animal. These increase in size through cell-division until the second protozoea stage, where the eye-stalks appear with ommatidia and optic neuropiles developed. The original neuroectoderm of the optic discs is retained in the shape of a proliferation zone throughout the life of the animal. From the optic discs, develop the ommatidia, the lamina ganglionaris, and the medulla externa. The medullae interna and terminalis develop from cells coming from the brain anlage. From the second protozoea and onwards, the development is less rapid. The final shape of the adult eye is reached during the postlarval stages and includes the appearance of a few more pigments and a perfecting of several features. A scheme for the development of crustacean compound eyes is laid down. Further, the medulla externa of the Malacostraca and the single medulla of non-malacostracan crustaceans are homologized.

The continuous growth of the nervous system is traced in the development of the neuropile. The appearance of glomeruli structures is reported, as are also, to some extent, neurosecretory organs. The development of the SPX-organ conforms to that of other decapods.



For the sake of simplicity, the findings reported below in “Results” are grouped under two headings, namely “the eye-stalk“ and “the nervous system“. Under “the eye-stalk” will be described both the structures coming from the optic discs comprising the ommatidia, the lamina ganglionaris, and the medulla externa, and the contributions from the nervous system comprising the medulla terminalis and medulla interna. Under “the nervous system” will be described the rest of the nervous system. The term “anlage of the compound eyes” is the same as the optic discs and denotes all contributions from this area in the early larva.
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organization
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type
Contribution to journal
publication status
published
subject
in
Zeitschrift für Zellforschung und mikroskopische Anatomie1948-01-01+01:001974-01-01+01:00
volume
97
pages
323 - 350
publisher
Springer Verlag
external identifiers
  • scopus:0014633295
DOI
10.1007/BF00968840
language
English
LU publication?
yes
id
28052742-bdba-4e76-b130-53775100f2ba
date added to LUP
2016-12-03 17:24:58
date last changed
2017-06-26 10:13:14
@article{28052742-bdba-4e76-b130-53775100f2ba,
  abstract     = {The development of the compound eyes and nervous system of the penaeid shrimp,Penaeus duorarum, from the first nauplius to the first postlarva, has been studied. The first anlage of the compound eyes is a pair of optic discs on the front of the animal. These increase in size through cell-division until the second protozoea stage, where the eye-stalks appear with ommatidia and optic neuropiles developed. The original neuroectoderm of the optic discs is retained in the shape of a proliferation zone throughout the life of the animal. From the optic discs, develop the ommatidia, the lamina ganglionaris, and the medulla externa. The medullae interna and terminalis develop from cells coming from the brain anlage. From the second protozoea and onwards, the development is less rapid. The final shape of the adult eye is reached during the postlarval stages and includes the appearance of a few more pigments and a perfecting of several features. A scheme for the development of crustacean compound eyes is laid down. Further, the medulla externa of the Malacostraca and the single medulla of non-malacostracan crustaceans are homologized.<br/><br/>The continuous growth of the nervous system is traced in the development of the neuropile. The appearance of glomeruli structures is reported, as are also, to some extent, neurosecretory organs. The development of the SPX-organ conforms to that of other decapods.<br/><br/><br/><br/>For the sake of simplicity, the findings reported below in “Results” are grouped under two headings, namely “the eye-stalk“ and “the nervous system“. Under “the eye-stalk” will be described both the structures coming from the optic discs comprising the ommatidia, the lamina ganglionaris, and the medulla externa, and the contributions from the nervous system comprising the medulla terminalis and medulla interna. Under “the nervous system” will be described the rest of the nervous system. The term “anlage of the compound eyes” is the same as the optic discs and denotes all contributions from this area in the early larva.<br/>},
  author       = {Elofsson, Rolf},
  language     = {eng},
  pages        = {323--350},
  publisher    = {Springer Verlag},
  series       = {Zeitschrift für Zellforschung und mikroskopische Anatomie1948-01-01+01:001974-01-01+01:00},
  title        = {The development of the compound eye of Penaeus duorarum (Crustacea:decapoda)},
  url          = {http://dx.doi.org/10.1007/BF00968840},
  volume       = {97},
  year         = {1969},
}