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STUDIES ON THE SEX RATIO IN THE JARRAH LEAFMINER PERTHIDA GLYPHOPA (LEPIDOPTERA: INCURVARIIDAE)

1984; Wiley; Volume: 23; Issue: 1 Linguagem: Inglês

10.1111/j.1440-6055.1984.tb01911.x

1440-6055

Z. Mazanec,

Plant and animal studies

Abstract The sex ratio of the jarrah leafminer Perthida glyphopa Common was studied in the larvae, pupae and adults. Female larvae predominated at the feeding stage in leaves during June‐September, the sex ratio (male:female) being 0.74:1.00. Diapausing larvae in the soil at the end of September had sex ratio 1.47:1.00, pupae in March 1.30:1.00 and emerging adults in April‐May 1.56:1.00. The reversal of the sex ratio at the diapausing stage suggests a biased mortality of female larvae in the soil.