336
GEORGE WALD
I loo
O200
E 5^mgX
0;2 03 0;4 0.5 06 0.7
1
1
1
1
h—I
±—I
h
480
490
500
Wavelength (mp)
FIG. 14. Variation of absorption spectra of rhodopsins of marine fishes with
summer range of depth. Left: X max ; right: E 540 /E mSLX (cf. Fig. 13). (From Wald
et al., 59.) The tabulation below provides a key to the figure.
1.
2.
3.
4.
5.
6.
7.
8.
Species
Summer flounder (Paralichthys
dentatus Linnaeus)
Butterfish (Poronotus triacanthus
Peck)
Scup (Stenotomus versicolor
Mitchill)
Barracuda (Sphyraena borealis
DeKay)
Cod (Gadus callarias Linnaeus)
Cusk (Brosme brosme Müller)
Rosefish (Sebastes marinus Linnaeus )
Lancet-fish (Alepisarus ferox
Lowe)
Summer
range of
depth
(fathoms)
2-10
1-30
1-20
l-10
e
5-75
10-100
40-175
>200
X max
(m/i)
503
499
498
498
496
494
488
480
E 540
/£ max
0.695
0.610
0.586
0.575
0.530
0.455
0.407
0.250
a H. B. Bigelow, personal communication.
When it is bleached and neo-b retinene added in the dark, it regenerates with the same A max . All these pigments are identical with other
rhodopsins in their prosthetic group, and owe their differences in spectrum entirely to the possession of different opsins. For this reason we
prefer to call them deep-sea rhodopsins.
From this point of view, disregarding for the moment a few exceptional cases, one can recognize a major transition of rod visual pigments
GEORGE WALD
I loo
O200
E 5^mgX
0;2 03 0;4 0.5 06 0.7
1
1
1
1
h—I
±—I
h
480
490
500
Wavelength (mp)
FIG. 14. Variation of absorption spectra of rhodopsins of marine fishes with
summer range of depth. Left: X max ; right: E 540 /E mSLX (cf. Fig. 13). (From Wald
et al., 59.) The tabulation below provides a key to the figure.
1.
2.
3.
4.
5.
6.
7.
8.
Species
Summer flounder (Paralichthys
dentatus Linnaeus)
Butterfish (Poronotus triacanthus
Peck)
Scup (Stenotomus versicolor
Mitchill)
Barracuda (Sphyraena borealis
DeKay)
Cod (Gadus callarias Linnaeus)
Cusk (Brosme brosme Müller)
Rosefish (Sebastes marinus Linnaeus )
Lancet-fish (Alepisarus ferox
Lowe)
Summer
range of
depth
(fathoms)
2-10
1-30
1-20
l-10
e
5-75
10-100
40-175
>200
X max
(m/i)
503
499
498
498
496
494
488
480
E 540
/£ max
0.695
0.610
0.586
0.575
0.530
0.455
0.407
0.250
a H. B. Bigelow, personal communication.
When it is bleached and neo-b retinene added in the dark, it regenerates with the same A max . All these pigments are identical with other
rhodopsins in their prosthetic group, and owe their differences in spectrum entirely to the possession of different opsins. For this reason we
prefer to call them deep-sea rhodopsins.
From this point of view, disregarding for the moment a few exceptional cases, one can recognize a major transition of rod visual pigments