A preliminary field survey and assessment of the effects of chemical toxin (dioxin) on primates in Ma Da area, Dong Nai province

We have recorded seven species, belonging to 3 families of primates in Ma Da area that was affected by chemical toxins during the Vietnam War. We have yet identified significant differences between the primate faunas of Ma Da area and Cat Tien National Park as well as the differences in morphology and behaviour of primates between these two areas. The small visible differences between the two faunas are mainly attributed to geographic topology, forest type and conservation management. Further studies on effects of Agent Orange on animals in Ma Da area should focus on carnivorous mammals, rodents, etc. to identify chemical toxins remained in those species and their effects.