Journal ArticleDOI
Extreme adaptability to light, in the round pupil of the snake Spalerosophis.
Reads0
Chats0
TLDR
In the colubrid snake Spalerosophis diadema diffordi from the Negev desert, Israel, the area of the circular pupil when dark adapted is 17–21 times greater than when adapted to 67,500 lx.About:
This article is published in Vision Research.The article was published on 1970-11-01. It has received 12 citations till now. The article focuses on the topics: Spalerosophis & Spalerosophis diadema.read more
Citations
More filters
Journal ArticleDOI
The Vertebrate Eye and Its Adaptive Radiation.
TL;DR: The conductivity bridge derives its bridge source from a self-contained vacuum tube oscillator adjusted to approximately 1,000 cycles as mentioned in this paper, which operates directly from the A.C. power source.
Journal ArticleDOI
The pupillary light responses of animals; a review of their distribution, dynamics, mechanisms and functions
TL;DR: In the majority of species, changes in pupil area serve to balance the conflicting demands of high spatial acuity and increased sensitivity in different light levels, and in the few teleosts in which pupil movements occur they do not serve a visual function but play a role in camouflaging the eye of bottom‐dwelling species.
Journal ArticleDOI
The pupil response of a teleost fish, Porichthys notatus: description and comparison to other species
TL;DR: The pupil response of Porichthys notatus to different intensities of illumination is described and compared to that of P. myriaster, Cephaloscyllium ventroisum, and a human, suggesting that, contrary to most previous assumptions, pupillary responses and retinomotor migrations are not mutually exclusive.
Journal ArticleDOI
Head triangulation in two colubrine snakes: probable behavioural reinforcement of batesian mimicry
TL;DR: Two Israeli aglyphous colubrid snakes seem to mimic venomous viperid snakes, and any of five hypotheses may enable the evolution of such mimicry systems in which the model may be lethal.
Journal ArticleDOI
Pupillary response to light in gekkonid lizards having various times of daily activity
TL;DR: Pupillary response to various light intensities, ranging from 0.01 to 280 lux, was studied on 12 taxa of geckos and a high linear correlation in each taxon between pupil area and log light intensity was found.
References
More filters
Book
The Vertebrate Eye and Its Adaptive Radiation
TL;DR: The new Conductivity Bridge derives its bridge source.
Journal ArticleDOI
The Vertebrate Eye and Its Adaptive Radiation.
TL;DR: The conductivity bridge derives its bridge source from a self-contained vacuum tube oscillator adjusted to approximately 1,000 cycles as mentioned in this paper, which operates directly from the A.C. power source.
Journal ArticleDOI
The ocular structure, retinomotor and photo-behavioral responses of juvenile pacific salmon
TL;DR: From a histophysiological study it is evident that only the emerged fry and older stages are capable of retinomotor responses and that these responses become more marked with age.
Journal ArticleDOI
The responses of the pupil of Gekko gekko to external light stimulus.
TL;DR: The responses of the pupil of a nocturnal gecko (Gekko gekko) to external light stimulus were studied and the spectral sensitivity curve agrees with the absorption curve of an extracted pigment from a closely related gecko described by Crescitelli in the followig paper.