Foraging synchrony drives resilience in human-dolphin mutualism

Area of Science:

• Marine biology
• Behavioral ecology
• Conservation science

Background:

• Human-wildlife interactions often have negative consequences.
• Cooperative foraging between species can be threatened by environmental and behavioral changes.

Purpose of the Study:

• To investigate the fine-scale behavioral synchrony between artisanal fishers and wild dolphins.
• To understand the benefits and threats to this human-dolphin cooperative foraging interaction.
• To model the future of this cooperation and propose conservation strategies.

Main Methods:

• Tracking fine-scale behavioral interactions between fishers and dolphins.
• Analyzing foraging synchrony and cue-matching.
• Using long-term demographic surveys.
• Employing a numerical model to predict future trends.

Main Results:

• Foraging synchrony benefits both dolphins and fishers when cues are matched.
• Cooperation provides socioeconomic benefits to fishers and survival benefits to dolphins.
• Declining mullet availability and bycatch risk threaten this interaction.
• Environmental and behavioral changes are pushing cooperation toward extinction.

Conclusions:

• This human-dolphin cooperation is a unique example of mutual benefit in nature.
• Conservation actions targeting fishers' behavior are needed to prevent the loss of this century-old fishery.
• Safeguarding this cooperation is vital for both human livelihoods and dolphin survival.