Abundance, Spatial Distribution, And Population Dynamics Of Aphis Craccivora In Peanut Cultivation In The Small Islands Of Maluku, Indonesia

Jeffij V. Hasinu, Agusthinus Marthin Kalay, Haperidah Nunilahwati, Wilhelmina Rumahlewang, Handry Amanupunjo R.D.

Abstract


Aphis craccivora Koch is an important pest of peanut plants whose population fluctuates over time and shows varied spatial distribution patterns. Information on this species' population characteristics in the agroecosystem of small islands in Maluku remains limited. This study aims to analyse the abundance, spatial distribution, and population dynamics of A. craccivora in peanut plants on Saparua Island and Nusalaut Island, Central Maluku Regency, Maluku Province, Indonesia. We conducted the study in April-June 2026 using a quantitative descriptive survey. We established five observation plots at each location and selected five plants per plot using a diagonal sampling pattern. We calculated the A. craccivora population every 7 days. We analysed spatial distribution using the Morisita Index and evaluated population dynamics based on growth rate (r). The average A. craccivora population was higher in Saparua (154 individuals) than in Nusalaut (101 individuals). The population distribution in Saparua was clustered (Moran's I index 1.427), while in Nusalaut it was close to random with a weak tendency to cluster (1.035). The population growth rate fluctuated across periods, with values of r −1.035 to 1.299 in Saparua and −0.112 to 0.579 in Nusalaut. This information can inform the development of pest monitoring that accounts for spatial and temporal variation.

Keywords


Aphis craccivora, peanuts, population abundance, spatial distribution, population dynamics, small islands, Maluku.

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DOI: http://dx.doi.org/10.52155/ijpsat.v59.2.8740

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Copyright (c) 2026 Jeffij V. Hasinu, A. Marthin Kalay, Haperidah Nunilahwati, Wilhelmina Wilhelmina, Handry R.D. Amanupunjo

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