Biology and Some Population Attributes of Spodoptera frugiperda J.E. Smith (Lepidoptera: Noctuidae) at Laboratory Conditions Itji Diana Daud a*, Nurul Izza, Melina, Ahdin Gassa, Vien Sartika Dewi
Department of Plant Pests and Diseases, Faculty of Agriculture, Universitas Hasanuddin, Jalan Perintis Kemerdekaan Km. 10 Makassar 90245, Indonesia
*itfir[at]yahoo.com
Abstract
Spodoptera frugiperda is an insect found in the corn plant ecosystem in South Sulawesi. Attacking the growing point of corn plants from the age of one week. The corn plant can fail to grow if 2-3 larvae of S. frugiperda are found in the plant. This insect has complete metamorphoses, namely egg, larva, pupa and adult. The larval stage is a stage that destroys corn plants, especially the larval niche at the growing point. The life table contains population statistical values such as the probability that an individual of a certain age group will die or alive. With this data, monitoring of population development can be carried out. The purpose of the study was to determine several aspects of the biology of S. frugiperda which was then used to calculate the value of several attributes of the insect population. The benefits of the data obtained are to design a control strategy for S. frugiperda. The feed given to the imago is honey, while the larvae are fed ^Baby Corn^. Furthermore, all insects were observed at the stage of each growth phase and the population of each phase of development was observed. The sex ratio of adult is 1: 1.5. The adult longevity of female ranges from 14-30 days. The proportion of individuals died in each different age from 1st, 2nd, 3rd, 4th, 5th instar was 0.032, 0.014, 0.006, 0.004, 0.004 while in 6th instar no one died. The prepupa and pupa mortality is 0.002 and 0.006, respectively. The conclusion of the life table data shows that the life expectancy of S. frugiperda at each stage is greater than the proportion of deaths, meaning that the population will grow. Therefore, to protect corn plant, it is necessary to prevent S. frugiperda from occurring in corn plant.
Keywords: Adult longevity- Corn plant- Life expectancy- Life table- Spodoptera frugiperda
