Compound eyes of some deep-sea and fiord crustaceans
(1977) In Acta Zoologica 58. p.169-177- Abstract
- The compound eyes of the deep-sea mysid Boreomysis scyphops and the two mysid species Amblyops abbreviata and Pseudomma affine, which are indigenous to deep fiords in Norway, have been investigated. The eye stalks are greatly transformed, but contain hypertrophied retinas. The ommatidia of all three species lack a dioptric apparatus, possessing only retinular cells, which are arranged in a cylinder-like fashion. Folds from the retinular cells project into the “cylinder” and are covered with microvilli. The arrangement is explained functionally by an increase in the photopigment-bearing surface as an adaptation to low-light intensities. The orderly arrangement of microvilli in most arthropod compound eyes has been lost, and the arrangement... (More)
- The compound eyes of the deep-sea mysid Boreomysis scyphops and the two mysid species Amblyops abbreviata and Pseudomma affine, which are indigenous to deep fiords in Norway, have been investigated. The eye stalks are greatly transformed, but contain hypertrophied retinas. The ommatidia of all three species lack a dioptric apparatus, possessing only retinular cells, which are arranged in a cylinder-like fashion. Folds from the retinular cells project into the “cylinder” and are covered with microvilli. The arrangement is explained functionally by an increase in the photopigment-bearing surface as an adaptation to low-light intensities. The orderly arrangement of microvilli in most arthropod compound eyes has been lost, and the arrangement is thus multidirectional in these mysids. With the photopigment dipoles arranged along the microvillar axis, the disorderly arrangement of microvilli signifies a more efficient capture of non-polarized light. It is concluded that the mysid compound eyes show adaptations to low-light intensities probably acquired during the species' evolutionary descent into deep-sea habitats. Amblyops abbreviata and Pseudomma affine, belonging to genera with entirely transformed eyes and with an ultrastructure less “normal” than that of Boreomysis scyphops are believed to be earlier descendants into the deep-sea habitats than the latter species, which belongs to a genus in which most of the species have well-developed eyes.
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Please use this url to cite or link to this publication:
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- author
- Elofsson, Rolf LU and Hallberg, Eric LU
- organization
- publishing date
- 1977
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Acta Zoologica
- volume
- 58
- pages
- 169 - 177
- publisher
- Wiley-Blackwell
- external identifiers
-
- scopus:0017739594
- DOI
- 10.1111/j.1463-6395.1977.tb00252.x
- language
- English
- LU publication?
- yes
- id
- e8cd76f9-8772-4da6-a068-a2d3c25aa4ad
- date added to LUP
- 2016-11-30 16:28:24
- date last changed
- 2021-01-03 03:41:22
@article{e8cd76f9-8772-4da6-a068-a2d3c25aa4ad, abstract = {{The compound eyes of the deep-sea mysid Boreomysis scyphops and the two mysid species Amblyops abbreviata and Pseudomma affine, which are indigenous to deep fiords in Norway, have been investigated. The eye stalks are greatly transformed, but contain hypertrophied retinas. The ommatidia of all three species lack a dioptric apparatus, possessing only retinular cells, which are arranged in a cylinder-like fashion. Folds from the retinular cells project into the “cylinder” and are covered with microvilli. The arrangement is explained functionally by an increase in the photopigment-bearing surface as an adaptation to low-light intensities. The orderly arrangement of microvilli in most arthropod compound eyes has been lost, and the arrangement is thus multidirectional in these mysids. With the photopigment dipoles arranged along the microvillar axis, the disorderly arrangement of microvilli signifies a more efficient capture of non-polarized light. It is concluded that the mysid compound eyes show adaptations to low-light intensities probably acquired during the species' evolutionary descent into deep-sea habitats. Amblyops abbreviata and Pseudomma affine, belonging to genera with entirely transformed eyes and with an ultrastructure less “normal” than that of Boreomysis scyphops are believed to be earlier descendants into the deep-sea habitats than the latter species, which belongs to a genus in which most of the species have well-developed eyes.<br/>}}, author = {{Elofsson, Rolf and Hallberg, Eric}}, language = {{eng}}, pages = {{169--177}}, publisher = {{Wiley-Blackwell}}, series = {{Acta Zoologica}}, title = {{Compound eyes of some deep-sea and fiord crustaceans}}, url = {{http://dx.doi.org/10.1111/j.1463-6395.1977.tb00252.x}}, doi = {{10.1111/j.1463-6395.1977.tb00252.x}}, volume = {{58}}, year = {{1977}}, }