When South African maize farmers tally their losses at the end of a growing season, termites rarely make the headlines. Yet across sub-Saharan Africa, termites and ants cause billions of rands in crop damage every year, hollowing out timber, destroying harvests, and undermining farm buildings. One of the most effective natural defences against these pests is also the world's most trafficked mammal: the pangolin.
Pangolins are obligate myrmecophages -- they eat ants and termites and virtually nothing else. A single Temminck's ground pangolin, the species found across southern and eastern Africa, can consume upward of 70 million insects per year. That is not a rounding error in the pest equation. It is a free, self-sustaining biocontrol service operating around the clock.
70 million+ insects per year: A single pangolin consumes this many ants and termites annually, using a sticky tongue that can extend up to 40 cm. Across a population, this represents billions of pest insects removed from agricultural and natural landscapes every year.
The Scale of Termite Damage
Termites are among the most economically destructive insects on the planet. The global cost of termite damage and control is estimated at USD 40 billion per year. In sub-Saharan Africa, where many farmers lack the resources for chemical pest management, the impact falls disproportionately on smallholder agriculture.
In South Africa, termites attack maize, sugarcane, groundnuts, and vegetable crops. The forestry sector, worth over R45 billion annually, loses significant timber volumes to termite infestation. Sugarcane growers in KwaZulu-Natal and Mpumalanga report yield losses of 10 to 20 percent in affected fields. Farm structures, fencing, and stored grain are also vulnerable.
| Sector | Termite Impact in South Africa | Estimated Annual Cost |
|---|---|---|
| Maize and grain crops | Root and stem damage, reduced yields | R2-5 billion |
| Sugarcane | Stool destruction, 10-20% yield loss in affected fields | R1-3 billion |
| Timber and forestry | Standing tree damage, post-harvest wood loss | R1-2 billion |
| Farm structures | Fencing, buildings, stored produce | R500 million+ |
| Chemical control costs | Termiticide application and reapplication | R1-2 billion |
How Pangolins Regulate Insect Populations
Pangolins do not simply eat insects. They regulate populations in ways that maintain ecological balance. When a pangolin forages on a termite mound, it does not destroy the colony. It opens access holes with its powerful claws, feeds for a limited period, then moves on, allowing the colony to recover. This pattern of partial predation prevents any single colony from growing large enough to become a significant agricultural pest while ensuring the colony persists as a future food source.
Foraging ecology in savanna systems
Temminck's ground pangolins range across home territories exceeding 10 square kilometres. As they move through savanna, bushveld, and woodland-agriculture mosaics, they visit dozens of colonies each night, distributing predation pressure across the landscape and suppressing pests over large areas.
Soil engineering benefits
Pangolin burrowing activity also aerates soil, improves water infiltration, and creates microhabitats for other species. In agricultural contexts, this soil turnover improves drainage and promotes nutrient cycling. The burrows provide shelter for other insectivores that contribute additional pest control.
Chemical Pesticides vs Natural Biocontrol
The conventional response to termite infestations is chemical treatment. Termiticides such as fipronil, imidacloprid, and chlorpyrifos are applied as soil treatments and targeted interventions. These chemicals work in the short term but carry significant costs and limitations.
- Direct cost: Termiticide treatments range from R1,500 to R5,000 per hectare per application, with most requiring reapplication every one to five years.
- Environmental damage: Broad-spectrum termiticides kill beneficial soil organisms alongside target pests. Neonicotinoids have documented impacts on pollinators critical to crop production.
- Water contamination: Pesticide runoff enters rivers and groundwater, potentially contaminating drinking water in rural communities.
- Resistance: Termite populations develop resistance to chemical treatments, requiring stronger or more frequent applications over time.
Pangolin-mediated biocontrol has none of these drawbacks. It is continuous, free, does not contaminate soil or water, and does not create resistance. A healthy pangolin population provides pest suppression that would cost billions of rands to replicate chemically.
Ecosystem services valuation: Replacing the insect regulation provided by pangolins and other myrmecophages with chemical alternatives in South Africa alone would cost an estimated R3-8 billion per year, not accounting for the environmental remediation costs of increased pesticide use.
Farmer-Pangolin Conflict: Clearing Up Misconceptions
Despite their value, pangolins are sometimes viewed with suspicion by farmers. The most common misconception is that pangolins damage property by digging into foundations or walls. In reality, pangolins dig to access ant and termite nests -- a pangolin digging near a structure is almost always a sign that termites have already infested it.
Some farmers also believe pangolins threaten livestock. Pangolins are entirely insectivorous, toothless, and non-aggressive. When threatened, their sole defence is to curl into a ball. They present no risk to farm animals or human safety.
A pangolin digging near your farmhouse is not damaging your property. It is telling you that termites already have. The pangolin is the treatment, not the disease.
Connection to Food Security
Over 60 percent of sub-Saharan Africa's population depends directly on agriculture. Smallholder farmers growing maize, sorghum, and cassava for household consumption cannot afford chemical pest control. They depend on natural ecosystem processes to keep pest populations in check.
As pangolin populations decline due to trafficking and habitat loss, the regulatory pressure on termite and ant populations weakens. Without top-down control, pest populations increase, leading to greater crop losses among the communities least equipped to absorb them. Pangolin conservation is, in a direct sense, a food security intervention.
Pangolin-Friendly Farming Practices
Forward-thinking farmers across South Africa are recognising pangolins as agricultural allies. Several practical measures can make working farms safer for pangolins:
- Report sightings: Contact Pangolert (072 726 4654) if you see a pangolin on your property. Sighting data helps researchers track populations and identify important habitat areas.
- Remove snares: Walk fence lines and boundaries regularly to remove wire snares, which are the leading cause of pangolin injury and death on farmland.
- Modify electric fences: Raise the bottom strand to at least 30 cm above ground level. Pangolins that contact electric fences curl into a ball and can die from prolonged exposure.
- Reduce pesticide use: Minimise broad-spectrum insecticide application near natural vegetation and field margins, which serve as pangolin foraging corridors.
- Maintain habitat corridors: Retain strips of indigenous bush between cultivated fields, allowing pangolins to move safely across the landscape.
- Avoid night disturbance: Pangolins are nocturnal. Reducing vehicle traffic and lighting in natural areas at night allows undisturbed foraging.
Case study: conservation-friendly farming in Limpopo
Several game farms and cattle ranches in Limpopo have adopted pangolin-friendly practices as part of biodiversity stewardship programmes. By removing snares, modifying fences, and reducing pesticide use, these properties maintain healthy pangolin populations alongside productive operations. Farmers report that areas with confirmed pangolin activity show lower termite damage to fencing and structures compared to areas where pangolins have been displaced.
The Economics of Neglect
Every pangolin lost to trafficking or habitat destruction removes a pest control agent that was operating for free. The cost of replacing that service with chemicals, at scale, across the continent, is staggering. Unlike a pangolin, a chemical application does not reproduce, does not adapt to local conditions, and does not improve soil health while doing its job.
Pangolin conservation is often framed as biodiversity or animal welfare, and it is both. But it is also a matter of agricultural economics. For South African farmers and the millions of smallholders across sub-Saharan Africa who share their land with these animals, protecting pangolins is not charity. It is an investment in the ecological infrastructure that keeps their farms productive.
Frequently Asked Questions
How many insects does a pangolin eat per year?
A single pangolin can consume over 70 million insects per year, primarily ants and termites. They use their elongated, sticky tongues, which can extend up to 40 centimetres, to extract insects from nests and mounds. This extraordinary consumption rate makes pangolins one of the most effective natural insect regulators in savanna and forest ecosystems.
Do pangolins help farmers with pest control?
Yes. Pangolins provide significant pest control services by suppressing termite and ant populations that damage crops, timber, and farm structures. Termites alone cost the global agricultural sector an estimated USD 40 billion per year. In regions where pangolins are present and protected, their foraging activity helps regulate these pest populations naturally, reducing the need for expensive chemical pesticides.
What would it cost to replace pangolin pest control with chemicals?
Replacing the pest control services provided by pangolins and other insectivores with chemical alternatives would cost billions of rands annually in South Africa alone. Chemical termiticides typically cost R1,500 to R5,000 per hectare per application, require reapplication, and carry environmental side effects including soil contamination and harm to beneficial insects. The natural biocontrol that pangolins provide is continuous, self-sustaining, and free.
How can farmers support pangolin conservation?
Farmers can support pangolin conservation by reporting sightings to Pangolert (072 726 4654), regularly checking and removing wire snares from their land, modifying electric fences with a raised bottom strand to allow pangolins to pass safely, reducing pesticide use near natural vegetation, and maintaining habitat corridors of indigenous bush between cultivated fields. These simple measures can help pangolins survive on working agricultural landscapes.