Visual pigments in a living fossil, the Australian lungfish Neoceratodus forsteri.

Visual pigments in a living fossil, the Australian lungfish Neoceratodus forsteri. Research Abstract Details 

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Visual pigments in a living fossil, the Australian lungfish Neoceratodus forsteri. Abstract Text:

Helena J Bailes,Wayne L Davies,Ann E O Trezise,Shaun P Collin,Helena J Bailes,Wayne L Davies,Ann E O Trezise,Shaun P Collin,

BACKGROUND: One of the greatest challenges facing the early land vertebrates was the need to effectively interpret a terrestrial environment. Interpretation was based on ocular adaptations evolved for an aquatic environment millions of years earlier. The Australian lungfish Neoceratodus forsteri is thought to be the closest living relative to the first terrestrial vertebrate, and yet nothing is known about the visual pigments present in lungfish or the early tetrapods. RESULTS: Here we identify and characterise five visual pigments (rh1, rh2, lws, sws1 and sws2) expressed in the retina of N. forsteri. Phylogenetic analysis of the molecular evolution of lungfish and other vertebrate visual pigment genes indicates a closer relationship between lungfish and amphibian pigments than to pigments in teleost fishes. However, the relationship between lungfish, the coelacanth and tetrapods could not be absolutely determined from opsin phylogeny, supporting an unresolved trichotomy between the three groups. CONCLUSION: The presence of four cone pigments in Australian lungfish suggests that the earliest tetrapods would have had a colorful view of their terrestrial environment.

Visual pigments in a living fossil, the Australian lungfish Neoceratodus forsteri. Publishing Authors By Initials

HJ Bailes,WL Davies,AE Trezise,SP Collin,HJ Bailes,WL Davies,AE Trezise,SP Collin,

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Visual pigments in a living fossil, the Australian lungfish Neoceratodus forsteri. Journal Published:

PUBLICATION TYPE: Research Support, Non-U.S. Gov

Journal: BMC evolutionary biology

VOLUME: 7

Page Numbers: 200

Journal Abbreviation: BMC Evol. Biol.

ISSN: 1471-2148

DAY: 25

MONTH: 10

YEAR: 2007

Visual pigments in a living fossil, the Australian lungfish Neoceratodus forsteri. Information

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LANGUAGE: eng

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AFFILIATION: School of Biomedical Sciences, University of Queensland, St Lucia, Brisbane, QLD 4072, Australia. helena.bailes@manchester.ac.uk

Country: England

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MEDLINETA: BMC Evol Biol

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