Study on the Hatching Characteristics and Diet of Stick Insect, Baculum elongatum (Phasmida : Phasmatidae) for Artificial Mass Rearing
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Baculum elongatum has several peculiarities such as parthenogenesis, unique externalfeatures, changing body color, and dropping oviposition, which makes it a potentialeconomically useful insect. Oviposition was performed by females without fertilization bythe sperm of males. The oviposition period was 42.2 ± 22.7 days and the number of eggsper female was 109.5 ± 70.5 eggs. The hatch rate was 73.3% at 25°C and 66.7% after lowtemperature treatment (8°C for 60 days). In nature, B. elongatum overwinters as an egg, but itcan be assumed from the results that cold temperatures were not required for hatching. Thehatch rate was 98.2% in the treatment using floral foam, fermented sawdust, and leaves. The developmental period was 100.9 ± 4.2 days for eggs, 55.3 ± 4.6 days for nymphs, and49.7 ± 16.0 days for adults. The length of the eggs was 0.33 ± 0.0 cm and the lengths of thenymphs were clearly distinguishable according to the instar stage. Clover(Trifolium repens)was an excellent diet as it was similar to the host plant and could be used as an alternativediet. The rate of reaching adulthood for the insects was 66.7% on an artificial diet containing25% acacia leaves. For sustainable mass rearing of nymphs or adults of B. elongatum, anatural diet could be used such as acacia (Robinia pseudoacacia), white oak (Quercusaliena), chestnut (Castanea crenata var. dulcis), and bush clover (Lespedeza bicolor), or analternative diet such as clover or artificial diet.
Abstract
Baculum elongatum has several peculiarities such as parthenogenesis, unique externalfeatures, changing body color, and dropping oviposition, which makes it a potentialeconomically useful insect. Oviposition was performed by females without fertilization bythe sperm of males. The oviposition period was 42.2 ± 22.7 days and the number of eggsper female was 109.5 ± 70.5 eggs. The hatch rate was 73.3% at 25°C and 66.7% after lowtemperature treatment (8°C for 60 days). In nature, B. elongatum overwinters as an egg, but itcan be assumed from the results that cold temperatures were not required for hatching. Thehatch rate was 98.2% in the treatment using floral foam, fermented sawdust, and leaves. The developmental period was 100.9 ± 4.2 days for eggs, 55.3 ± 4.6 days for nymphs, and49.7 ± 16.0 days for adults. The length of the eggs was 0.33 ± 0.0 cm and the lengths of thenymphs were clearly distinguishable according to the instar stage. Clover(Trifolium repens)was an excellent diet as it was similar to the host plant and could be used as an alternativediet. The rate of reaching adulthood for the insects was 66.7% on an artificial diet containing25% acacia leaves. For sustainable mass rearing of nymphs or adults of B. elongatum, anatural diet could be used such as acacia (Robinia pseudoacacia), white oak (Quercusaliena), chestnut (Castanea crenata var. dulcis), and bush clover (Lespedeza bicolor), or analternative diet such as clover or artificial diet.
참고문헌 (11)
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