Abstract
The prevalence of V.ovalifolium in Pulau Dua Nature Reserve was surveyed. This parasite was observed parasitizing on only two host species, Excoecaria agallocha and Thespesia populnea, among 11 potential host tree species in the study area. This phenomenon, contemporarily coined as local host specificity, is complementary to a small endnote on Backer & Bakhuizen van den Brink's 1965 Flora of Java vol. II. V.ovalifolium's prevalence is higher as the increase on host tree DBH, as the decrease of infested host branch diameter and as the increase of host tree branching order. Two later findings point at Dicaeum trochileum as V.ovalifolium seed disperser among 90 bird species living on the nature reserve.
Highlights
Over 45 years, Backer & Backhuizen van den Brink’s 1963-1968 magnum opus, Flora of Java
Combination of two plots showed that Thespesia populnea was the most important trees of the area, due to its DBH, followed by Avicennia marina and Rhizophora apiculata; with Excoecaria agallocha was only at the fourth
Out of 11 tree species within study area only 2 species were infested by V. ovalifolium
Summary
Over 45 years, Backer & Backhuizen van den Brink’s 1963-1968 magnum opus, Flora of Java This parasite was observed parasitizing on only two host species, Excoecaria agallocha and Thespesia populnea, among 11 potential host tree species in the study area.
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