Spectral Tuning and Evolution of Short Wave-Sensitive Cone Pigments in Cottoid Fish from Lake Baikal†

Biochemistry ◽  
2002 ◽  
Vol 41 (19) ◽  
pp. 6019-6025 ◽  
Author(s):  
Jill A. Cowing ◽  
Subathra Poopalasundaram ◽  
Susan E. Wilkie ◽  
James K. Bowmaker ◽  
David M. Hunt
Keyword(s):  
Lake Baikal ◽  
Short Wave ◽  
Spectral Tuning ◽  
Cone Pigments ◽  
Cottoid Fish

scholarly journals Spectral tuning and molecular evolution of rod visual pigments in the species flock of cottoid fish in Lake Baikal

1996 ◽  
Vol 36 (9) ◽  
pp. 1217-1224 ◽  
Author(s):  
David M. Hunt ◽  
Jude Fitzgibbon ◽  
Sergey J. Slobodyanyuk ◽  
James K. Bowmakers
Keyword(s):  
Molecular Evolution ◽  
Lake Baikal ◽  
Visual Pigments ◽  
Species Flock ◽  
Spectral Tuning ◽  
Cottoid Fish

scholarly journals Evolutionary analysis of rhodopsin and cone pigments: connecting the three-dimensional structure with spectral tuning and signal transfer

FEBS Letters ◽  
2003 ◽  
Vol 555 (1) ◽  
pp. 151-159 ◽  
Author(s):  
David C. Teller ◽  
Ronald E. Stenkamp ◽  
Krzysztof Palczewski
Keyword(s):  
Three Dimensional ◽  
Dimensional Structure ◽  
Evolutionary Analysis ◽  
Spectral Tuning ◽  
Signal Transfer ◽  
Three Dimensional Structure ◽  
Cone Pigments

Photic Environment, Visual Pigments, and the Limits of the Visible Spectrum

Perception ◽  
1997 ◽  
Vol 26 (1_suppl) ◽  
pp. 160-160
Author(s):  
V I Govardovskii
Keyword(s):  
Visible Spectrum ◽  
Blue Shift ◽  
Short Wave ◽  
Visual Pigments ◽  
Limiting Factor ◽  
Spectral Position ◽  
Dark Noise ◽  
Water Fish ◽  
Cone Pigments ◽  
Purkinje Shift

The limits of the visible spectrum are set by the light available for vision, and by the visual pigment absorbance. The hundreds of visual pigments studied to the present day have absorbance maxima spread within the range from 350 to 620 nm. Yet this diversity is used for vision quite nonuniformly: rod and cone visual pigments are tightly clustered around a few preferred positions in the spectrum, eg near 500 nm in the rods of land animals. The so-called ‘sensitivity hypothesis’ assumes that the clustering is to maximise the number of absorbed photons available in the animals' light environment. In most cases, however, visual pigments are substantially more short-wave (blue-shifted) than is necessary for maximum quantal absorption. Examples of the ‘blue shift’ are the Purkinje shift during cone - rod transition in dark adaptation, the hypsochromic shift of rod visual pigments in deep-water fish, and a similar shift in the cone pigments of geckos and some snakes as a result of evolutionary adaptation to nocturnal habits. It is argued that an important limiting factor in vision is the dark noise produced by thermal isomerisation of the chromophore. Measurements of the dark noise in rods with different visual pigments show that the noise increases steeply when the absorbance maximum is shifted to longer wavelengths, thus precluding the use of long-wave pigments for vision at low intensities. The optimum spectral position of a pigment may be that which ensures a maximum light-to-noise ratio in a particular photic environment.

Molecular Evolution of the Cottoid Fish Endemic to Lake Baikal Deduced from Nuclear DNA Evidence

1997 ◽  
Vol 8 (3) ◽  
pp. 415-422 ◽  
Author(s):  
David M Hunt ◽  
Jude Fitzgibbon ◽  
Sergey J Slobodyanyuk ◽  
James K Bowmaker ◽  
Kanwaljit S Dulai
Keyword(s):  
Molecular Evolution ◽  
Lake Baikal ◽  
Nuclear Dna ◽  
Dna Evidence ◽  
Cottoid Fish

Spectral Tuning of Rhodopsin and Visual Cone Pigments

2014 ◽  
Vol 136 (7) ◽  
pp. 2723-2726 ◽  
Author(s):  
Xiuwen Zhou ◽  
Dage Sundholm ◽  
Tomasz A. Wesołowski ◽  
Ville R. I. Kaila
Keyword(s):  
Spectral Tuning ◽  
Cone Pigments

Differentiation of communities of macroinvertebrates and cottoid fish associated with methane seeps of different bottom landscapes of Lake Baikal

2021 ◽  
Vol 325 (4) ◽  
pp. 469-484
Author(s):  
V.G. Sideleva ◽  
T.Ya. Sitnikova
Keyword(s):  
Lake Baikal ◽  
Deep Water ◽  
Gas Hydrates ◽  
Microbial Mats ◽  
Methane Seep ◽  
Methane Seeps ◽  
Saint Petersburg ◽  
Transitional State ◽  
Cottoid Fishes ◽  
Cottoid Fish

The paper presents the results of the study of communities of macroinvertebrates and cottoid fish inhabiting methane seeps of Lake Baikal. For the analysis, we used video surveillance and collection of animals carried out with the help of "Mir" deep-water submersible, as well as NIOZ-type box-corer samplers from the board of a research vessel. Posolskaya Bank and Saint Petersburg methane seeps are located in different basins (southern and middle) and at different depths (300–500 m and ~ 1400 m), characterized by the different underwater landscapes (slope of underwater upland and hills formed by gas hydrates), by the structure of gas hydrates and their depth location in sediments, as well as the composition of microbial mats and communities of microorganisms of bottom sediments. Both seeps are characterized by bubble discharge of methane gas and the formation of highly productive communities of large invertebrates and cottoid fish on seep habitats. Seep animal communities consisted of species-depleted invertebrates and fish of the surrounding deep-water benthal of the Lake. We showed the similarities and differences in the composition of the faunas of two seeps, as well as the quantitative characteristics of taxonomic groups of macroinvertebrates and cottoid fishes. Obligate species have not been revealed on the methane seep Posolskaya Bank. For the methane seep Saint Petersburg, the gastropod species Kobeltocochlea tamarae Sitnikova, Teterina et Maximova, 2021 (Caenogastropoda: Benedictiidae) was designated as an obligate species; among bottom cottoid fishes, Neocottus werestschagini (Taliev, 1953) (Cottoidei: Abyssocottidae) had possible a transitional state to obligate. We presented the data on the assimilation by seep animals of mixed photo- and chemosynthetic food with different proportions of methane-derived carbon. A hypothesis has been substantiated that deep-water seep areas could serve as refugium for the preservation of endemic fauna during the Pliocene-Pleistocene glaciations of Lake Baikal.

The sensitivity and spectral identity of the cones driving the b-wave of the rat electroretinogram

2003 ◽  
Vol 20 (2) ◽  
pp. 109-117 ◽  
Author(s):  
JAMES D. AKULA ◽  
ARKADY L. LYUBARSKY ◽  
FRANK NAARENDORP
Keyword(s):  
Action Spectrum ◽  
Short Wave ◽  
Bipolar Cells ◽  
Chromatic Adaptation ◽  
White Background ◽  
Full Field ◽  
Absolute Sensitivity ◽  
Cone Type ◽  
Cone Pigments ◽  
Absorbance Peak

In the retina of rat, cones make up ∼0.85% of the photoreceptor population: 93% of these cones contain a midwave-sensitive pigment, the rest expresses a short-wave-sensitive pigment (Szel & Rohlich, 1992). We used normal adult Long Evans rats to determine the spectral sensitivity of the cone-driven electroretinogram (ERG) b-wave and its absolute sensitivity at λmax of the cone pigments. ERGs were recorded at the cornea of anesthetized animals under dark- and light-adapted conditions. Rod responses were suppressed by steady rod-saturating orange backgrounds and/or by a flashed “white” background. Cone-driven b-waves were evoked by “white” or narrowband full-field stimuli of varying intensity. The action spectrum for the cone b-wave indicates the presence of an absorbance peak at 510 nm; a second, twofold lower, peak was found at 360 nm (after correction for transmittance by the lens). Chromatic adaptation experiments strongly suggest that retinal responses to midwave and UV stimuli are mediated by a single cone type. On a background producing ∼17,000 R* rod−1 s−1, which completely suppressed the saturated a-wave, the absolute sensitivity of the cone b-wave was 18 nV photon−1 μm2 at 510 nm and 4 nV photon−1 μm2 at 360 nm which is 20–30 times higher than for the mouse. It is suggested that the relatively large number of on-cone bipolar cells in the retina of rat is responsible for the remarkable sensitivity of the cone b-wave.

scholarly journals Spectral Tuning of Deep Red Cone Pigments†

Biochemistry ◽  
2008 ◽  
Vol 47 (16) ◽  
pp. 4614-4620 ◽  
Author(s):  
Tabitha L. Amora ◽  
Lavoisier S. Ramos ◽  
Jhenny F. Galan ◽  
Robert R. Birge
Keyword(s):  
Spectral Tuning ◽  
Cone Pigments

Visual pigments and the photic environment: The cottoid fish of Lake Baikal

1994 ◽  
Vol 34 (5) ◽  
pp. 591-605 ◽  
Author(s):  
J.K. Bowmaker ◽  
V.I. Govardovskii ◽  
S.A. Shukolyukov ◽  
J L.V. Zueva ◽  
D.M. Hunt ◽  
...  
Keyword(s):  
Lake Baikal ◽  
Visual Pigments ◽  
Cottoid Fish
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