Hematophagous

Definition

Feeding on blood; describes organisms whose diet consists primarily or exclusively of vertebrate or invertebrate blood. In arthropods, hematophagy has evolved independently multiple times across diverse lineages, involving specialized mouthpart modifications (piercing-sucking stylets, scissor-like mandibles) and physiological adaptations including anticoagulant saliva, vasodilators, and erythrocyte-degrading enzymes. The behavior underpins transmission cycles for numerous vector-borne pathogens (malaria, dengue, Lyme disease, trypanosomiasis).

Etymology

From Greek haima (blood) + phagein (to eat)

Example

Female mosquitoes (Culicidae) are hematophagous, requiring blood meals for egg development, whereas males feed exclusively on nectar.

Synonyms

• Sanguivorous

Related Terms

• Phlebotomy
• vector
• Bloodsucking
• Host-seeking
• Anticoagulant
• Disease ecology

Usage Notes

Applied to the organism or the behavior; contrast with nectarivorous, carnivorous, or detritivorous feeding strategies. Not all blood-feeding arthropods are obligate hematophages—some are facultative, and blood may supplement other diets. The term carries strong medical entomology connotations due to vector competence associations.