scholarly journals Hard to get, easy to lose: Evolution of mantle photoreceptor organs in bivalves (Bivalvia, Pteriomorphia)

Evolution ◽  
2020 ◽  
Vol 74 (9) ◽  
pp. 2105-2120
Author(s):  
Jorge Alves Audino ◽  
Jeanne Marie Serb ◽  
José Eduardo Amoroso Rodriguez Marian
Keyword(s):  
Photoreceptor Organs

Photoreceptor Organs and Circadian Locomotor Activity in Fishes

1992 ◽  
pp. 223-234 ◽  
Author(s):  
Mitsuo Tabata
Keyword(s):  
Locomotor Activity ◽  
Photoreceptor Organs

Physiology of Photoreceptor Organs vol 7, pt 2, Handbook of Sensory Physiology

1976 ◽  
Vol 94 (4) ◽  
pp. 691-691
Author(s):  
H. Ripps
Keyword(s):  
Sensory Physiology ◽  
Photoreceptor Organs

Ultrastructure of potential photoreceptor organs in the larva ofScrupocellaria bertholetti (bryozoa)

1978 ◽  
Vol 91 (3) ◽  
pp. 225-234 ◽  
Author(s):  
Roy L. Hughes ◽  
Robert M. Woollacott
Keyword(s):  
Photoreceptor Organs

Handbook of Sensory Physiology, Vol. 7, Pt. 2. Physiology of Photoreceptor Organs

1974 ◽  
Vol 77 (1) ◽  
pp. 125
Author(s):  
Joel Pokorny
Keyword(s):  
Sensory Physiology ◽  
Photoreceptor Organs

scholarly journals Different photoreceptor organs are used for photoperiodism in the larval and adult stages of the carabid beetle, Leptocarabus kumagaii

2009 ◽  
Vol 212 (22) ◽  
pp. 3651-3655 ◽  
Author(s):  
Y. Shintani ◽  
S. Shiga ◽  
H. Numata
Keyword(s):  
Carabid Beetle ◽  
Photoreceptor Organs

Physiology of Photoreceptor Organs

1972 ◽  
Author(s):  
I. Abramov ◽  
P. O’Bryan ◽  
C. G. Bernhard ◽  
M. G. F. Fuortes ◽  
G. Gemne ◽  
...  
Keyword(s):  
Photoreceptor Organs

Circadian photoreceptor organs inLimulus

1988 ◽  
Vol 162 (1) ◽  
pp. 133-140 ◽  
Author(s):  
W. J. Brad Hanna ◽  
Jane Anne Horne ◽  
George H. Renninger
Keyword(s):  
Photoreceptor Organs

scholarly journals Eye evolution and its functional basis

2013 ◽  
Vol 30 (1-2) ◽  
pp. 5-20 ◽  
Author(s):  
DAN-E. NILSSON
Keyword(s):  
Functional Analysis ◽  
High Resolution ◽  
Morphological Data ◽  
Last Common Ancestor ◽  
Visually Guided ◽  
Whole Process ◽  
Eye Evolution ◽  
Performance Requirements ◽  
Simple Set ◽  
Photoreceptor Organs

AbstractEye evolution is driven by the evolution of visually guided behavior. Accumulation of gradually more demanding behaviors have continuously increased the performance requirements on the photoreceptor organs. Starting with nondirectional photoreception, I argue for an evolutionary sequence continuing with directional photoreception, low-resolution vision, and finally, high-resolution vision. Calculations of the physical requirements for these four sensory tasks show that they correlate with major innovations in eye evolution and thus work as a relevant classification for a functional analysis of eye evolution. Together with existing molecular and morphological data, the functional analysis suggests that urbilateria had a simple set of rhabdomeric and ciliary receptors used for directional photoreception, and that organ duplications, positional shifts and functional shifts account for the diverse patterns of eyes and photoreceptors seen in extant animals. The analysis also suggests that directional photoreception evolved independently at least twice before the last common ancestor of bilateria and proceeded several times independently to true vision in different bilaterian and cnidarian groups. This scenario is compatible with Pax-gene expression in eye development in the different animal groups. The whole process from the first opsin to high-resolution vision took about 170 million years and was largely completed by the onset of the Cambrian, about 530 million years ago. Evolution from shadow detectors to multiple directional photoreceptors has further led to secondary cases of eye evolution in bivalves, fan worms, and chitons.

Regeneration of photoreceptor organs in freshwater planarians at different levels of accumulation of natural methylmercury compounds

2006 ◽  
Vol 37 (2) ◽  
pp. 108-112 ◽  
Author(s):  
I. V. Medvedev ◽  
V. A. Gremyachikh ◽  
S. V. Zheltov ◽  
O. V. Bogdanenko ◽  
I. A. Aksenova
Keyword(s):  
Methylmercury Compounds ◽  
Photoreceptor Organs ◽  
Different Levels
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