Mistletoes, their host plants and the effects of browsing by large mammals in Addo Elephant National Park

Abstract

There are at least four plant hemiparasites (Viscaceae (three species), Loranthaceae (one species)) within the Addo Elephant National Park. Highly selective utilisation of these plant parasites by large browsing animals has resulted in severe decline of these plants. The parasites are often associated with spinescent host plants. This has less to do with escaping herbivory by large mammals and more to do with spinescent plants being optimum hosts because they are a richer nutrient source for plant parasites than most non-spinescent plants. -from Authors