Biological Parameters and Demographic Statistics of Macrophytoptus fusiformis (Acari: Eriophyidae) on Fig Trees

Abstract

Biological parameters and demographic statistics of Macrophytoptus fusiformis (Acari: Eriophyidae) were studied on fig (Ficus carica L.) trees to evaluate its developmental performance, population growth potential, and host interaction dynamics under controlled laboratory conditions. Observations included developmental duration, survivorship, fecundity, and stage-specific mortality across egg, nymphal, and adult stages. Results indicated successful completion of the life cycle on fig leaf tissues, with relatively short developmental time and high reproductive output under optimal temperature and humidity conditions. Female longevity exceeded that of males, contributing to sustained oviposition and rapid population buildup. Life table analysis revealed positive demographic growth parameters, including elevated intrinsic rate of increase, finite rate of increase, and net reproductive rate, indicating strong population expansion potential on fig hosts. Survival curves demonstrated gradual mortality across developmental stages, while fecundity peaked during early adult life, reflecting a reproductive strategy favoring rapid population increase. Temperature significantly influenced developmental rate and reproduction, with optimal performance observed under moderately warm conditions typical of subtropical environments. Population doubling time was short under favorable conditions, highlighting the pest’s capacity for rapid infestation of fig foliage. The demographic profile suggests high adaptability and efficient resource utilization on host tissues. These findings provide critical baseline information for understanding population dynamics of M. fusiformis and support the development of predictive models for pest outbreaks. The study emphasizes the need for early monitoring and integrated management strategies to mitigate potential damage in fig cultivation systems, particularly in regions conducive to rapid eriophyid mite development.