Sexual interactions in red-spotted newt populations |
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| Institution: | 1. Department of Surgery, Surgery and Abdominal Transplantation Division, Université Catholique de Louvain, Cliniques Universitaires Saint-Luc, Brussels, Belgium;2. Experimental and Clinical Research Institute, Université Catholique de Louvain, Cliniques Universitaires Saint-Luc, Brussels, Belgium;3. Department of Internal Medicine, Nephrology Division, Université Catholique de Louvain, Cliniques Universitaires Saint-Luc, Brussels, Belgium |
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| Abstract: | Two alternative reproductive tactics (amplexus and spermatophore transfer interference) and three sexual interference tactics (spermatophore transfer interference, pseudofemale behaviour, amplexus interference) are described for male red-spotted newts, Notophthalmus viridescens. The two reproductive tactics yield equal insemination rates for males displaying these behaviours. The three sexual interference tactics decrease the potential fitness of amplectic males either directly, by displacing them from receptive females and/or duping them into fruitless spermatophore depositions, or indirectly, by increasing the time spent in amplexus with no concomitant increase in probability of successful insemination. |
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