What is meant by a 'preference-performance mismatch' in behavioural ecology? Illustrate with a suitable example and discuss its broader implications for conservation biology.

In behavioural ecology, animals are assumed to choose habitats or resources that maximise their offspring's survival. A preference-performance mismatch occurs when this link breaks — an organism actively prefers a resource on which its offspring actually perform worse. Rapid human alteration of habitats is making such mismatches increasingly common.

Meaning and mechanism

• Selection normally tunes behavioural cues (smell, colour, light) to reliable indicators of resource quality.
• When humans introduce novel resources, the old cue persists but no longer predicts fitness — the cue becomes misleading rather than adaptive.
• The result is an evolutionary or ecological trap: attractive in the short term, costly in reproductive terms [1].

Illustration: urban dung beetles and dog waste (2026)

• A study of the tunneler beetle Onthophagus orpheus found a strong preference for dog dung over cow dung, and larvae on dog dung developed faster into larger adults [1].
• Yet brood-ball mortality was nearly 60% on dog dung against about 25% on cow dung — more than double [1].
• Since dog waste is the dominant faecal resource in cities, beetles are drawn to an abundant but reproductively inferior substrate [2].

Implications for conservation biology

• Abundance can mislead: high visitation to a resource or habitat may mask population decline, so monitoring must track breeding success, not merely counts [1].
• Ecosystem services are at stake: dung beetles drive dung removal, nutrient cycling and secondary seed dispersal, with the service to the US pastured cattle industry valued at roughly $380 million a year [3].
• Restoration must be functional, restoring cue-reliable habitat and decomposer communities rather than area alone [4].
• Urban governance angle: pet-waste management, long framed as sanitation, is also an urban biodiversity issue [2].

Preference-performance mismatches show that conservation cannot rely on animal choice as a proxy for animal welfare. Integrating fitness-based monitoring into habitat management, and treating cities as ecosystems under India's urban sanitation and biodiversity programmes, would align conservation practice with the ecological reality of human-dominated landscapes.