voltinism

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voltinism

a form of polymorphism in insects where some enter DIAPAUSE and others do not.
References in periodicals archive ?
Similarly, polyvoltine strains are hardy but less productive, while the bivoltines strains are susceptible to diseases under adverse biotic and abiotic conditions.
Evaluation Report of Project for Strengthening Extension System for Bivoltine Sericulture in India, Project Foundation for Advanced Studies on International Development available on http://www2 .
Genetic control of diapause and other developmental traits in Japanese strains of the migratory locust, Locusta migratoria: univoltine vs bivoltine.
fluminea generally has a bivoltine reproductive cycle in response to temperature regimes in rivers, lakes, and reservoirs (Aldridge & McMahon 1978, Kennedy & Van Huekelem 1985, Rajagopal et al.
Regular sampling near Las Cruces, as well as supplemental collecting, indicated that both restheniines are bivoltine.
Adults have been collected in December-January and May-June (Table 2) which might suggest a bivoltine species.
Seasonal variation in the niche, habitat availability and population fluctuations of a bivoltine thermophilous insect near its range margin.
These two late-season species were sampled in case the parasites sometimes linger that long in their hosts and in case the species is bivoltine or multivoltine rather than limited to one generation per year.
A bivoltine life cycle was observed with a duration between 136 and 171 days and a total of five larval instars.
clavipes from five univoltine populations inhabiting highly seasonal Mexican sites and from a bivoltine population inhabiting a less seasonal Panamanian site.
Seasonal polymorphism and developmental changes in organs of flight and reproduction in bivoltine pondskaters (Hemiptera: Gerridae).