Fecundity and Reproductive Rate of Bursaphelenchus lignicolus

概要

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The fecundity and adult life span of Bursaphelenchus lignicolus were studied at 25°C by transferring the same females and males at intervals to new fungus cultures of Botrytis cinerea until they died. B. lignicolus laid an average 79 eggs per female over a 28-day oviposition period. The maximum number of eggs laid by a female was 216. Peak oviposition generally occurred within 4 days after egg-laying commenced and averaged 5.5 eggs per day during the time. Thereafter the number of eggs laid declined. Adult females died shortly after oviposition ceased. The rather high mortality of adults was observed. The average adult life span of female was 15 days, and the maximum was 32 days. The net reproductive rate per generation Ro was derived from the age-specific fecundity rate mx and the female survival rate lx. Then intrinsic rate of natural increase r (=0.832) was calculated from Ro, thus logNt/No=0.832t give a theoretical curve of population increase of B. lignicolus in an unlimited environment. Jap. J. Nematol. 7: 6-9 (1977).
日本線虫学会の論文