The African tropical house gecko is a mainly nocturnal gecko species, and can attain a maximum length (snout to vent) of 12.7 cm (5 in). Learn more about gecko nocturnal vision in the notes.
Outside wall near the beach at the east of Zanzibar. Usually associated with human settlements. Distribution: native to sub-Saharan Africa. Introduced in North, Central and South America and the Caribbean
Geckos that are nocturnal have a tendency to have large eyes. When the intensity of the light changes, so does the pupil of the eye. When the light intensity increases, the pupil closes so that it becomes a vertical slit (second shot). Geckos have much more sensitive eyes than humans and have more sensitive photoreceptors. Also, the cones in the retina of nocturnal geckos have become much larger and more light-sensitive than those of their diurnal relatives. http://www.environmentalgraffiti.com/new... http://www.journalofvision.org/content/9...
Lat: -6.32, Long: 39.55
Spotted on Apr 20, 2012
Submitted on Jun 6, 2012
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