Voltinism

Voltinism is a term used in biology to indicate the number of broods or generations of an organism in a year. The term is most often applied to insects, and is particularly in use in sericulture, where silkworm varieties vary in their voltinism.

• Univoltine (monovoltine) – (adjective) referring to organisms having one brood or generation per year
• Bivoltine (divoltine) – (adjective) referring to organisms having two broods or generations per year
• Trivoltine – (adjective) referring to organisms having three broods or generations per year
• Multivoltine (polyvoltine) – (adjective) referring to organisms having more than two broods or generations per year
• Semivoltine – There are two meanings:

• (biology) Less than univoltine; having a brood or generation less often than once per year
• or (adjective) referring to organisms whose generation time is more than one year.