Nuptial gift

Definition

A material resource provided by one mating partner—typically the male—to the other prior to or during copulation, distinct from gametes, that functions to increase the donor's reproductive success by improving mating access, extending copulation duration, or enhancing offspring quality. In arthropods, nuptial gifts vary from nutritious secretions and prey items to glandular products and reduced body parts, with their form often species-specific and shaped by sexual selection.

Etymology

From Latin 'nuptialis' (of marriage or wedding) + English 'gift'; adopted into behavioral ecology to describe courtship offerings analogous to dowry or bride-price traditions.

Example

Male scorpionflies (Panorpa spp.) commonly present females with dead arthropods—often kleptoparasitized from spider webs—as nuptial gifts; the female consumes the prey during copulation, which prolongs sperm transfer and increases the male's paternity share. In contrast, male bush-crickets (Tettigoniidae) produce a spermatophylax, a detachable gelatinous mass attached to the spermatophore that the female eats after mating, providing nutrients that boost her egg production.

Synonyms

• bridal gift
• courtship offering

Related Terms

• Spermatophylax
• Sexual selection
• cryptic female choice
• paternal investment
• kleptoparasitism
• copulation duration
• reproductive fitness

Usage Notes

The term emphasizes adaptive function rather than mere courtship display. Not all pre-copulatory food transfers qualify: gifts must demonstrably influence mating success or offspring fitness. The cost-benefit balance varies—some gifts are cheap 'token' offerings, others substantially reduce male condition. Female consumption of the gift during copulation can serve as physical restraint, preventing premature dismount. Contrast with 'forced copulation' or 'coercive mating' strategies where males bypass gift provision entirely.