Mass provisioning

Definition

A parental investment strategy in which an adult female provisions a small enclosed cell or chamber with the complete food supply required for her offspring's entire development before laying an egg and sealing the chamber. The food—typically pollen, nectar, paralyzed prey, or other appropriate resources—is left as a single, finite allotment with no further parental care. This strategy contrasts with progressive provisioning, where parents continue to feed offspring throughout development.

Etymology

Example

A female mason bee (Osmia) constructs a mud-lined cavity in a hollow stem, packs it with moistened pollen and nectar to form a firm pollen loaf, lays an egg on the provision, then seals the chamber with a mud partition before repeating the process in adjacent cells.

Synonyms

• complete provisioning
• sealed provisioning

Related Terms

• Progressive provisioning
• cell provisioning
• pollen loaf
• bee nest architecture
• solitary bee
• cleptoparasite

Usage Notes

Mass provisioning is characteristic of most solitary bees and many solitary wasps, but is essentially absent in eusocial wasps (Vespidae), which rely on progressive provisioning and direct feeding of larvae by workers. The strategy carries risks: if the provision is insufficient, the offspring dies; if excessive, resources are wasted. Cleptoparasitic bees often exploit mass-provisioned cells by laying eggs in unguarded chambers. The term applies specifically to the provisioning pattern, not to the amount of food (which can be modest or generous).