The Biological Basis of Sexual Behaviour in Amphibia

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Abstract
1. The absence of the eyes in either the male or the female or in both partners of injected pairs of South African clawed toads (Xenopus laevis) does not interfere with the orientation of the male in the adoption of the normal lumbar embrace during coupling. 2. The more frequent adoption of abnormal embraces (e.g. with the hind- or the forelimbs of the female partner), in the case of the eyeless male, before the adoption of the normal embrace, suggests that the eyes may play an unimportant role in facilitating adoption of the lumbar embrace.

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