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在室内采用选择行为方法,研究了二疣犀甲Oryctes rhinoceros(Linnaeus)对不同寄主茎干的产卵选择行为。结果表明,二疣犀甲对不同腐烂状态椰子茎干的产卵选择性具有明显差异,其中以半腐烂状态的茎干对二疣犀甲的产卵引诱效果最强,单雌产卵数和孵化率分别为27.06粒和87.41%,其次为完全腐烂的茎干,而健康茎干的引诱效果最差。5种不同棕榈植物的半腐烂茎干对二疣犀甲的产卵诱集结果表明,二疣犀甲在椰子和油棕茎干上的产卵量最高且差异不显著。而在不同椰子品种半腐烂茎干之间,二疣犀甲优先选择香水椰子和海南高种椰子茎干腐烂物产卵,单雌产卵量分别为28.14粒和24.25粒。在不同原因造成的死亡椰子茎干中,二疣犀甲优先选择台风折断死亡的茎干产卵,其次为染虫死亡茎干,最后为感病死亡茎干。少量的二疣犀甲幼虫粪便能诱集成虫在寄主上产卵,在粪便比例为25%时,对二疣犀甲成虫产卵诱集效果最强,单雌产卵量最高,达到34.67粒,之后随着粪便在产卵基质中比例的增加,二疣犀甲的产卵行为逐渐受到抑制,产卵量减少。
The method of selection behavior was used indoors to study the oviposition behavior of Oryctes rhinoceros (Linnaeus) on different host stems. The results showed that there were significant differences in the oviposition preference of two verruca sativa for spawning coconut stems in different decay states. Among them, The hatching rates were 27.06 seeds and 87.41% respectively, followed by the completely decayed stems, while the healthy stems had the weakest inducement. The oviposition results of the half-rotten stems of five different palm plants on two warts, Rhinoceros argyi showed that the two eggs had the highest fecundity on coconut and oil palm stems with no significant difference. In different coconut varieties between the semi-decay stems, two warts rhinoceros preferred perfume coconut and Hainan high coconut stem rot eggs, the number of single females were 28.14 and 24.25. In different causes of death coconut stems, two warts rhinoceros preferred typhoons death of the stems spawning, followed by the dead stems of the dye insects, and finally for the death of stems. Females of two verrucous rhinoceros larvae could attract adults to lay their eggs on the host. When the proportion of faeces was 25%, the adults had the strongest ovulation induction and the highest fecundity of females, reaching 34.67 , And then with the increase in the proportion of stool in the spawning matrix, two verruca arboreal eggs gradually suppressed spawning behavior, reduced fecundity.