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Ecological Characteristics of Dorcus hopei(E Saunders) for the Development of Mass-rearing Technique in Korea  

Kim, Chul-Hak (K-insect. Co., Ltd. c/o Kangwon National University)
Lee, Jun-Seok (K-insect. Co., Ltd. c/o Kangwon National University)
Jung, Geun (Division of Biological Environment)
Park, Kyu-Taek (Division of Biological Environment)
Publication Information
Korean journal of applied entomology / v.43, no.2, 2004 , pp. 135-141 More about this Journal
Abstract
This study was carried out to review the distributional data of Dorcus hopei in Korea and to investigate ecological characteristics to develop a mass rearing technique of the species. The coupling period of the male and female was needed at least 2 weeks in condition of 6 months after emergence, and the optimal sex ratio for oviposition was 2♀:1♂. Eggs were laid singly, up to 27.3 per female. The pre-ovipostion period was average 147.3 days, egg-period was 15.6 days on the average, and oviposition period was at least 120 days. The optimum size of oviposition room was 55${\times}$40${\times}$35 cm with 3-4 oviposition-trees cut in size of 15${\times}$15 cm. Quercus acutissima was highly preferred for the oviposition. Developing period of each instar in the insectary (25$^{\circ}C$, 75% R.H.. 16L:8D) was 24.1 days for the 1st instar,29.8 days for the 2nd, and 131.2 days for the 3rd instar, and 28.9 days for the pupa. The longevity of adults was longer than 35 months. The period of induced dormancy was needed at least 3-4 months.
Keywords
Oviposition; Development; Longevity; Dormancy;
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