摘要
在室内研究了温度对双纹须歧角螟Trichophysetis cretacea(Butler)生长发育及繁殖的影响。结果表明,在19~31℃范围内,双纹歧角螟的发育速率随着温度的升高而加快;当温度超过31℃时,发育速率减慢。在各虫态中,蛹期的存活受温度变化的影响最大,35℃时蛹全部死亡。19℃、23℃、27℃、31℃和35℃下的世代存活率分别为87.1%、83.0%、85.2%、70.1%和0%。卵、幼虫、预蛹、蛹及从卵至成虫的发育起点温度分别为9.08℃、8.95℃、7.80℃、9.09℃和8.86℃,有效积温分别为62.4、122.0、16.0、108.1和309.1日.度。成虫的寿命随温度的升高而缩短,27℃时成虫的产卵量最高,平均为91.3粒。19℃、23℃、27℃和31℃条件下,实验种群的净生殖率分别为31.0、41.8、46.7、0.8,内禀增长率分别为0.0813、0.1439、0.1710、-0.0094,平均世代周期分别为42.2、26.3、23.1和19.2天。
The growth, development and reproduction of Trichophysetis cretacea (Butler) were studied at five temperatures (19℃ , 23℃, 27℃ , 31 ℃ , and 35℃ ) in the laboratory. The results showed that the developmental rate of Trichophysetis cretacea increased with the rise of temperature from 19℃ to 31℃, and varied slightly at higher temperatures. The pupal stage was most sensitive to temperature change compared with other developmental stages, and all pupae died at 35℃. The generation survival rate was 87.1%, 83.0%, 85.2%, 70.1%, and 0% at above five temperatures respectively. The developmental threshold temperature required for egg, larva, prepupa, pupa and egg-aduh was 9.08℃ , 8.95℃, 7.80℃, 9.09℃, and 8.86%, while the effective accumulated temperature was 62.4, 122.0, 16.0, 108.1, and 309.1 degree-day, respectively. Adult longevity shortened with the temperature increasing. The number of eggs laid per female was highest (91.3) at 27℃ . At the temperatures of 19℃, 23℃ , 27℃, and 31℃, the net reproductive rate (R0 ) of the laboratory population was 31.0, 41.8, 46.7, and 0.8, the intrinsic rate of natural increase ( rm ) was 0.0813, 0. 1439, 0.1710, and - 0.0094, and the mean generation time was 42.2, 26.3, 23.1, and 19.2 days, respectively.
出处
《昆虫学报》
CAS
CSCD
北大核心
2005年第6期910-913,共4页
Acta Entomologica Sinica
基金
广西"十百千人才工程"专项资金(2001202)
广西农科院科技发展基金(2001003)
关键词
双纹须歧角螟
发育起点温度
有效积温
发育速率
存活率
成虫寿命
产卵量
种群参数
Trichophysetis cretacea
developmental threshold temperature
effective accumulated temperature
developmental rate
survival rate
adult longevity
fecundity
population parameters