Variation in attack by the mahogany shoot borer, Hypsipyla grandella (Lepidoptera: Pyralidae), in relation to host growth and phenology
Variation in attack by the mahogany shoot borer, Hypsipyla grandella (Lepidoptera: Pyralidae), in relation to host growth and phenology
复制标题
桃花心木蛀虫、Hypsipyla grandella（鳞翅目：螟科）的攻击变化与寄主生长和物候的关系
DOI：
10.1017/s0007485300025931
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发表时间：
1998
影响因子：
1.9
通讯作者：
A. Watt
中科院分区：
文献类型：
--
作者：
A. Newton;J. Cornelius;J. Mesen;E. Corea;A. Watt
为了评估桃花心木蛀梢虫Hypsipylagrandella（Zeller）的攻击与寄主生长和物候之间的关系，对在哥斯达黎加建立的西班牙雪松和美国桃花心木Swietenia macrophylla进行了为期84周的田间试验。C. odorata是S. macrophylla，平均增长率分别为2.0和1.3厘米周-1。香柏表现出明显的时间变化，在叶物候，在相对干燥的时期，最低的51%的树木在叶。相反，叶状S.大叶乔木为87%。在S. macrophylla直到评估开始后50周，而C.在第6周期间记录气味。到第84周，受攻击的树木比例分别为74%和77%。在这两个物种中，攻击集中在季节性高峰，与新芽的生产相吻合。在这两个物种的攻击明显的空间变化。在第12周，C中每个区块的攻击次数。臭草与土壤有效钙浓度呈负相关（r=0.85，P < 0.01）。臭草与土壤有效磷浓度呈显著正相关（r=0.84; P < 0.01）。odorata和0.4% S.在3 m的高度，大叶仍然完好无损。因此，在防治方法上，应考虑其发生的时间动态，以及与寄主物候的关系。对土壤养分状况的控制也可构成虫害综合管理办法的一部分。
In order to evaluate the relationships between attacks by the mahogany shoot borer Hypsipyla grandella (Zeller) and host growth and phenology, field trials of Spanish cedar Cedrela odorata and American mahogany Swietenia macrophylla established in Costa Rica were assessed intensively over an 84 week period. Height growth of C. odorata was approximately twice that of S. macrophylla , with mean growth rates of 2.0 and 1.3 cm week −1 respectively. Cedrela odorata displayed pronounced temporal variation in leaf phenology, with a minimum of 51% of trees in leaf during a relatively dry period. In contrast, the minimum proportion of foliated S. macrophylla trees was 87%. No shoot borer attacks were recorded on S. macrophylla until week 50 after the onset of assessments, whereas initial attacks of C. odorata were recorded during week 6. By week 84, the proportion of trees attacked was 74% and 77%, respectively. In both species, attacks were concentrated in seasonal peaks, coinciding with the production of new shoots. Pronounced spatial variation in attack was observed in both species. At week 12, the number of attacks per block in C. odorata was negatively correlated with available calcium concentration (r=0.85, P C. odorata was positively correlated with available phosphate concentration (r=0.84; P C. odorata and 0.4% S. macrophylla remained undamaged to a height of 3 m. It is suggested that control methods for the mahogany shoot borer should take account of temporal dynamics in attack, and relationship to host phenology. Manipulation of the soil nutrient status may also form part of an integrated approach to pest management.