小紅鰹節蟲生態觀察

Studies on Ecology of Khapra Beetle, Trogoderma granarium E.

林欉(Tsung Lin) ； 李錦霞(Chin-Hsia Li)

《中華農業研究》 32卷4期 (1983/12) Pp. 383-389

https://doi.org/10.29951/JARC.198312.0011

摘要

小紅鰹節蟲(Trogoderma granarium Everts)在室內飼育觀察年發生6世代，卵期6-(7.5)-10天。卵之孵化率41.9-(58.5)-100%。幼蟲齡期通常爲4-6齡，但受溫濕度影響可多達7-9齡。幼蟲期25-(49.1)-183天，耐飢能力甚強，最長可生存一年以上。蛹期3-(5.0)-9天。每一雌蟲產卵次數5、6、7次占64.7%，2、3、4、8次占32.4%，9、10次占2.9%。一次產卵數3-6粒占爲34.5%，1-2粒占爲30.9%，7-13粒占爲27.6%，14-20粒占7%。一雌蟲產卵總數7-(43.3)-81粒，成蟲壽命5-(16.3)-37天。一世代平均所需目數46.3-(61.7)-101.3天。一對成蟲經12個月飼養繁殖蟲數，在稻穀者爲0-(6.0)-10隻，糙米者爲5,862-(7,960)-11,887隻。其爲害損失率稻穀爲0.3-(2.2)-2.7%，糙米爲69.1-(78.9）-92.7%。成蟲並不爲害，幼蟲爲害糙米或破損之穀粒，但並不爲害完整穀粒。此蟲在本省苗栗以北地區較少發生。

並列摘要

The khapra beetle, Trogoderma granarium Everts, had six generations a year. The egg with an incubation period of 6-(7.5)-10 days had 41.9-(58.5)-100% hatched. Larval stage normally consisted of 4-6 stadia, while influenced with temperature and humidity it could postponed ot 7-9 stadia, and this period lasted 25-(49.1)-183 days. The larvae was highly tolerable to starvation, and could generally persist for more than one rear without feeding. The pupal stage was 3-(5.0)-9 days. There were 64.7% of the female oviposting 5, 6, 7 times, 32.4% ovipositing 2, 3, 4 or 8 times and 2.9% ovipositing 9.10 times 34.5%, 30.9%, 27.6% and 7% of the female oviposited 3-6, 1-2, 7-13 and 14-20 eggs, respectively. The total number of egg laid by one female 2as 7-(43.3)-81. The adult existed 5-(16.3)-37 days. It took.46.3-(61.7)-101.3 days to complete one generation. One pair of abult beetles reproduced 0-(6.0)-10 and 5,862-(7,960)-11,887 individuals and cause 0.3-(2.2)-2.7% and 69.1-(78.9)-92.7% of the loss when feeding on rcei grain and corse rice, respectively, for 12 months. The adult did not make any damage on rice. The larvae injury on coarse rice or broken rice, but not on whole grain. This pest was rarely occurred in the brea north of Miao-Li.