Deep-sea and pelagic rod visual pigments identified in the mysticete whales
Our current understanding of the spectral sensitivities of the mysticete whale rod-based visual pigments is based on two species, the gray whale (Eschrichtius robustus) and the humpback whale (Megaptera novaeangliae) possessing absorbance maxima determined from difference spectra to be 492 and 497 n...
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ftkeanuniv:oai:digitalcommons.kean.edu:keanpublications-3179 2023-12-17T10:31:27+01:00 Deep-sea and pelagic rod visual pigments identified in the mysticete whales Bischoff, Nicole Nickle, Benjamin Cronin, Thomas W. Velasquez, Stephani Fasick, Jeffry I. 2012-03-01T08:00:00Z https://digitalcommons.kean.edu/keanpublications/2180 https://doi.org/10.1017/S0952523812000107 unknown Kean Digital Learning Commons https://digitalcommons.kean.edu/keanpublications/2180 doi:10.1017/S0952523812000107 Kean Publications Absorbance spectra Amino acid substitution Baleen Cetacean Opsin text 2012 ftkeanuniv https://doi.org/10.1017/S0952523812000107 2023-11-23T19:05:53Z Our current understanding of the spectral sensitivities of the mysticete whale rod-based visual pigments is based on two species, the gray whale (Eschrichtius robustus) and the humpback whale (Megaptera novaeangliae) possessing absorbance maxima determined from difference spectra to be 492 and 497 nm, respectively. These absorbance maxima values are blueshifted relative to those from typical terrestrial mammals (≈500 nm) but are redshifted when compared to those identified in the odontocetes (479-484 nm). Although these mysticete species represent two of the four mysticete families, they do not fully represent the mysticete whales in terms of foraging strategy and underwater photic environments where foraging occurs. In order to better understand the spectral sensitivities of the mysticete whale rod visual pigments, we have examined the rod opsin genes from 11 mysticete species and their associated amino acid substitutions. Based on the amino acids occurring at positions 83, 292, and 299 along with the directly determined dark spectra from expressed odontocete and mysticete rod visual pigments, we have determined that the majority of mysticete whales possess deep-sea and pelagic like rod visual pigments with absorbance maxima between 479 and 484 nm. Finally, we have defined the five amino acid substitution events that determine the resulting absorbance spectra and associated absorbance maxima for the mysticete whale rod visual pigments examined here. Copyright © Cambridge University Press 2012. Text Humpback Whale Megaptera novaeangliae Kean Digital Learning Commons Visual Neuroscience 29 2 95 103 |
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Kean Digital Learning Commons |
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ftkeanuniv |
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topic |
Absorbance spectra Amino acid substitution Baleen Cetacean Opsin |
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Absorbance spectra Amino acid substitution Baleen Cetacean Opsin Bischoff, Nicole Nickle, Benjamin Cronin, Thomas W. Velasquez, Stephani Fasick, Jeffry I. Deep-sea and pelagic rod visual pigments identified in the mysticete whales |
topic_facet |
Absorbance spectra Amino acid substitution Baleen Cetacean Opsin |
description |
Our current understanding of the spectral sensitivities of the mysticete whale rod-based visual pigments is based on two species, the gray whale (Eschrichtius robustus) and the humpback whale (Megaptera novaeangliae) possessing absorbance maxima determined from difference spectra to be 492 and 497 nm, respectively. These absorbance maxima values are blueshifted relative to those from typical terrestrial mammals (≈500 nm) but are redshifted when compared to those identified in the odontocetes (479-484 nm). Although these mysticete species represent two of the four mysticete families, they do not fully represent the mysticete whales in terms of foraging strategy and underwater photic environments where foraging occurs. In order to better understand the spectral sensitivities of the mysticete whale rod visual pigments, we have examined the rod opsin genes from 11 mysticete species and their associated amino acid substitutions. Based on the amino acids occurring at positions 83, 292, and 299 along with the directly determined dark spectra from expressed odontocete and mysticete rod visual pigments, we have determined that the majority of mysticete whales possess deep-sea and pelagic like rod visual pigments with absorbance maxima between 479 and 484 nm. Finally, we have defined the five amino acid substitution events that determine the resulting absorbance spectra and associated absorbance maxima for the mysticete whale rod visual pigments examined here. Copyright © Cambridge University Press 2012. |
format |
Text |
author |
Bischoff, Nicole Nickle, Benjamin Cronin, Thomas W. Velasquez, Stephani Fasick, Jeffry I. |
author_facet |
Bischoff, Nicole Nickle, Benjamin Cronin, Thomas W. Velasquez, Stephani Fasick, Jeffry I. |
author_sort |
Bischoff, Nicole |
title |
Deep-sea and pelagic rod visual pigments identified in the mysticete whales |
title_short |
Deep-sea and pelagic rod visual pigments identified in the mysticete whales |
title_full |
Deep-sea and pelagic rod visual pigments identified in the mysticete whales |
title_fullStr |
Deep-sea and pelagic rod visual pigments identified in the mysticete whales |
title_full_unstemmed |
Deep-sea and pelagic rod visual pigments identified in the mysticete whales |
title_sort |
deep-sea and pelagic rod visual pigments identified in the mysticete whales |
publisher |
Kean Digital Learning Commons |
publishDate |
2012 |
url |
https://digitalcommons.kean.edu/keanpublications/2180 https://doi.org/10.1017/S0952523812000107 |
genre |
Humpback Whale Megaptera novaeangliae |
genre_facet |
Humpback Whale Megaptera novaeangliae |
op_source |
Kean Publications |
op_relation |
https://digitalcommons.kean.edu/keanpublications/2180 doi:10.1017/S0952523812000107 |
op_doi |
https://doi.org/10.1017/S0952523812000107 |
container_title |
Visual Neuroscience |
container_volume |
29 |
container_issue |
2 |
container_start_page |
95 |
op_container_end_page |
103 |
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1785584754830082048 |