Abstract
Abstract The influence Of temperature on the growth and survival of first-instar larvae of black beetle feeding in soil was examined. Similarly the consumption, utilisation, growth, and survival of second- and third-instar larvae feeding on carrot were investigated using gravimetric methods. Soil temperatures in the range 20–25° c were found to be necessary for optimum growth of all instars. First-instar larval growth increased exponentially over the temperature range 10–20°c. Third-instar larvae were tolerant of higher temperatures than second-instar larvae. The temperatures for optimum levels of consumption and utilisation of carrot varied between the instars.
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