scholarly journals Intracellular trafficking in Drosophila visual system development: A basis for pattern formation through simple mechanisms

2011 ◽  
Vol 71 (12) ◽  
pp. 1227-1245 ◽  
Author(s):  
Chih-Chiang Chan ◽  
Daniel Epstein ◽  
P. Robin Hiesinger
Keyword(s):  
Pattern Formation ◽  
Visual System ◽  
Intracellular Trafficking ◽  
System Development ◽  
Visual System Development

Visual system development in the duck embryo

1978 ◽  
Vol 59 (1) ◽  
pp. 53-61 ◽  
Author(s):  
Marieta Barrow Heaton ◽  
John B. Munson
Keyword(s):  
Visual System ◽  
System Development ◽  
Duck Embryo ◽  
Visual System Development

scholarly journals The roles of intercellular Vax1 transfer in mouse visual system development

IBRO Reports ◽  
2019 ◽  
Vol 6 ◽  
pp. S465
Author(s):  
Kwang Wook Min ◽  
Young Hoon Sung ◽  
Nam Suk Kim ◽  
Jae Hyun Kim ◽  
Jee Myung Yang ◽  
...  
Keyword(s):  
Visual System ◽  
System Development ◽  
Visual System Development

scholarly journals Neoteny in visual system development of the spotted unicornfish, Naso brevirostris (Acanthuridae)

2019 ◽  
Author(s):  
Valerio Tettamanti ◽  
Fanny de Busserolles ◽  
David Lecchini ◽  
Justin Marshall ◽  
Fabio Cortesi
Keyword(s):  
Visual System ◽  
System Development ◽  
Feeding Habits ◽  
Quantitative Difference ◽  
Photoreceptor Cells ◽  
Reef Fishes ◽  
Ontogenetic Changes ◽  
Cone Opsin ◽  
Opsin Genes ◽  
Visual System Development

AbstractOntogenetic changes of the visual system are often correlated to shifts in habitat and feeding behaviour of animals. Coral reef fishes begin their lives in the pelagic zone and then migrate to the reef. This transition of habitat frequently involves a change in diet and light environment as well as major morphological modifications. The spotted unicornfish, Naso brevirostris, is known to shift diet from zooplankton to algae and back to zooplankton when transitioning from larval to juvenile and then to adult stages. Concurrently, N. brevirostris also moves from an open pelagic to a coral-associated habitat before migrating up in the water column when reaching adulthood. Using retinal mapping techniques, we discovered that the distribution and density of ganglion and photoreceptor cells in N. brevirostris do not change with the habitat or the feeding habits of each developmental stage. Instead, fishes showed a neotenic development with a slight change from larval to juvenile stages and not many modifications thereafter. Visual gene expression based on RNA sequencing mirrored this pattern; independent of stage, fishes mainly expressed three cone opsin genes (SWS2B, RH2B, RH2A), with a quantitative difference in the expression of the green opsin genes (RH2A and RH2B) when transitioning from larvae to juveniles. Hence, contrary to the ontogenetic changes found in many animals, the visual system is fixed early on in N. brevirostris development calling for a thorough analysis of visual system development of the reef fish community.

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