作　　者： ; ;

机构地区： 广东海洋大学农学院

出　　处： 《海南大学学报（自然科学版）》 2009年第3期252-255,258,共5页

摘　　要： 研究发现椰心叶甲[Brontispa longissima (Gestro)]各项生育指标与椰子[Cocos nucifera (Linnaeus)]叶片的生长阶段关系密切.统计表明:从幼虫到成虫整个阶段的存活率心叶较成熟叶片高,分别为81%和77%,椰心叶甲完成一个世代在心叶上需要58.54 d,在成熟叶片上需要52.92 d.叶片生长阶段对虫质量和蛹质量的影响表现为取食心叶较重,且大部分龄期的幼虫质量和蛹质量的差异均显著.椰子心叶和成熟叶片上的成虫的性比分别为n(雌)∶n(雄)=1.27∶1和n(雌)∶n(雄)=1.17∶1,平均产卵量为143.3粒和161.93粒,成虫寿命分别为189.14 d和172.36 d,椰子心叶和成熟叶上的实验种群趋势指数分别为56.55和56.45. The analysis results showed that there are closely relationship between the fertility indicators of Brontispa longissima （Gestro） and the developmental stage of Cocos nucifera. The data indicated that the survival rates of unspread leaves are higher than that of mature leaves from larval stage to adult stage, and were 81% and 77% respectively. It took 58.54 days for Brontispa longissima to finish one generation on unspread leaves, while it took 52.92 days on mature leaves. The weight of larval and pupal feed on unspread leaves were higher than that of others, and the differences of the weight of larval and pupal during major development times were signifi- cant. The sex-ratios of Brontispa longissima fed on unspread and mature leaves of Cocos nucifera were 1.27 （ female） ： 1 （male） and 1.17 （female） ： 1 （male） respectively, the fecundity were 143.3 and 161.93 respectively, the longevities of adult were 189.14 days and 172.36 days respectively, the experimental population trend index of Brontispa longissima on unspread and mature leaves of Cocos nucifera were 56.55 and 56.45 respectively.

关 键 词： 椰心叶甲 存活率 发育历期 虫质量 生殖力 生命表

领　　域： [农业科学] [农业科学]