University of Bristol Spelæological Society

Venezuelan Cave Crickets with variably reduced eyes (UBSS Proceedings v.16(1))

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Chapman,P.R.J., and Willis,R.G., 1981. Venezuelan Cave Crickets with variably reduced eyes. UBSS Proceedings, 16(1) , pp 39-45 Download PDF.

Abstract: Light and electron photomicroscopy were used to study variability in eye regression of populations of a cavernicolous gryllid cricket from Northern Venezuela. Statistical analysis suggests there are two distinct types or subspecies each with a separate habitat preference. The micropthalmic type is probably better adapted to life in low-energy, deep-cave environments but is outcompeted in high-energy environments (e.g. Guano beds) by the macropthalmic type.

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