- Animal Systematics/Taxonomy/Biogeography 13
- Parasitology 11
- Animal Anatomy / Morphology / Histology 10
- Animal Ecology 10
- Entomology 9
- Life Sciences, general 9
- Zoology 9
- Agriculture 8
- Infectious Diseases 8
- Tropical Medicine 8
- Veterinary Medicine/Veterinary Science 8
- Virology 8
- Ecotoxicology 7
- Ecology 5
- Environment, general 5
- Environmental Chemistry 4
- Environmental Health 4
- Medical Microbiology 4
- Microbiology 4
- Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution 4