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Dolphins & Fishers: A Rare Human-Wildlife Partnership
22 Mar
Summary
- Dolphins and fishers in Laguna, Brazil, cooperate for mutual benefit.
- This rare human-wild animal partnership has existed for over 140 years.
- Declining mullet populations threaten this unique interspecies collaboration.
In Laguna, Brazil, a remarkable 140-year-old partnership exists between human fishers and Lahille's bottlenose dolphins. This rare instance of mutualism sees dolphins actively herding mullet fish towards shore, enabling fishers to cast their nets effectively. In return, the dolphins snatch up any fish that escape the nets.
This cooperative fishing method is crucial for both species. Research indicates that collaborative hunts significantly increase fishers' catches, while participating dolphins exhibit a higher survival rate. The knowledge of this teamwork is passed down through generations of fishers, with evidence suggesting dolphins also learn and coordinate their actions.
However, this ancient bond is now imperiled. A decline in mullet fish populations, a key source of income for local fishers, threatens the economic viability of this practice. This situation mirrors a broader global trend of decreasing human-wildlife cooperation, with only two other comparable examples of such mutualistic relationships remaining worldwide.
