Blowfly

Vital decomposers

Blowflies are among the first organisms to arrive at a fresh carcass, sometimes within minutes of death — they detect volatile compounds from up to 2 km away. Females lay eggs in body cavities and wounds; the larvae (maggots) that hatch consume the soft tissue, breaking down a carcass that would otherwise represent a disease and contamination hazard. Blowflies are essential recyclers of animal protein back into the ecosystem.

Forensic entomology

Blowfly succession on a carcass follows a predictable sequence. Forensic entomologists can estimate time of death by determining the stage of blowfly development present. Knowing the species (each has a slightly different development rate at a given temperature), the local weather data, and the developmental stage allows calculation of the minimum post-mortem interval. Blowflies are used in murder investigations worldwide.

Maggot therapy

Medical-grade maggots (specially reared Lucilia sericata larvae) are used in wound debridement — applied to chronic, non-healing wounds where they consume dead tissue and secrete antimicrobial compounds. Maggot therapy received FDA approval in 2004 and is used in hospitals globally for diabetic foot ulcers and other wounds that don’t respond to antibiotics.

Livestock pest

Blowfly strike — larvae feeding on living sheep tissue, particularly around wounds or soiled wool — is a major welfare and economic problem in sheep farming in Australia and the UK.