（半翅目：木虱科）对不同基因型的攻击模式。
(Hemiptera: Psyllidae) attack patterns on different genotypes.
作者信息
Tuller Juliana, Oliveira Karla Nunes, Silva Jhonathan Oliveira, de Faria Maurício Lopes, do Espírito-Santo Mario Marcos, Serrão José Eduardo, Zanuncio José Cola
机构信息
Departmento de Biologia, Setor de Ecologia e Conservação, Universidade Federal de Lavras (UFLA), Lavras, Minas Gerais, Brazil.
Pós-Graduação em Ecologia, Departamento de Biologia Geral, Universidade Federal de Viçosa, Viçosa, Minas Gerais, Brazil.
出版信息
PeerJ. 2017 Oct 24;5:e3864. doi: 10.7717/peerj.3864. eCollection 2017.
BACKGROUND
The red gum lerp psyllid, Moore (Hemiptera: Psyllidae), an eucalypt insect pest from Australia, was reported in Brazil in 2003. This study evaluated damage patterns of this pest on Dehn (Myrtaceae) and its hybrids X (urocam) and X (urograndis). In addition, parasitism rates of Riek (Hymenoptera: Encyrtidae) on collected on different eucalypt genotypes are reported.
METHODS
Plantation plots of three eucalypt genotypes were evaluated over one year. The eucalypt leaves were collected and examined for attack by . Nymph parasitism of by was recorded.
RESULTS
Damage by was lower on the hybrid genotypes and on the adaxial surface of the eucalypt leaves. egg and nymph density were negatively correlated with monthly rainfall. Nymph parasitism of by was low (2.9%) independent of genotype and did not vary throughout the year.
DISCUSSION
Our data indicate the use of less susceptible eucalypt genotypes (e.g., hybrids) as an alternative to management. Because of the current low mortality rates for resulting from parasitism, biological control with this natural enemy is not recommended as a management strategy for .
背景
红胶木虱，Moore（半翅目：木虱科），一种来自澳大利亚的桉属害虫，于2003年在巴西被发现。本研究评估了这种害虫对细叶桉Dehn（桃金娘科）及其杂交种尾叶桉×细叶桉（urocam）和巨桉×尾叶桉（urograndis）的危害模式。此外，还报告了在不同桉属基因型上采集的红胶木虱被赖氏恩蚜小蜂Riek（膜翅目：恩蚜小蜂科）寄生的比率。
方法
对三种桉属基因型的种植园地块进行了为期一年的评估。采集桉树叶并检查是否受到红胶木虱的侵害。记录红胶木虱若虫被赖氏恩蚜小蜂寄生的情况。
结果
红胶木虱对杂交基因型以及桉树叶正面的危害较小。红胶木虱卵和若虫密度与月降雨量呈负相关。红胶木虱若虫被赖氏恩蚜小蜂寄生的比率较低（2.9%），与基因型无关，且全年无变化。
讨论
我们的数据表明，使用较不易感的桉属基因型（如杂交种）作为管理红胶木虱的替代方法。由于目前赖氏恩蚜小蜂寄生导致的红胶木虱死亡率较低，不建议将这种天敌的生物防治作为红胶木虱的管理策略。
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