de Sousa Josilene M, Gondim Manoel G C, Lofego Antônio C
Depto de Agronomia, Univ Federal Rural de Pernambuco, Recife, PE, Brazil, 52171-900.
Neotrop Entomol. 2010 May-Jun;39(3):319-23. doi: 10.1590/s1519-566x2010000300002.
The mite Tetranychus mexicanus (McGregor) is considered a pest of a variety of plant species in the Americas. Although this mite apparently causes economic damage to Annonaceae, little is known about its biology. Here we studied the biology of T. mexicanus on soursop (Annona muricata), sweetsop (Annona squamosa) and araticum (Annona coriaceae). The first two species are the most important economical Annonaceae species in northeast Brazil; araticum is commonly found in the region, but not commercially explored. The mites were collected in the field from leaves of A. muricata and maintained in the laboratory for six months on detached leaves of A. muricata, A. squamosa and A. coriaceae, respectively, before observations started. Tetranychus mexicanus developed more slowly on A. squamosa than on the two other hosts, but oviposition was considerably lower on A. coriaceae. As indicated by the calculated life table parameters, biotic potential was higher on A. muricata than on the other hosts. Despite the observed differences in the T. mexicanus biology on the different evaluated hosts, development and reproduction were satisfactory in all of the hosts used.
墨西哥叶螨（麦格雷戈）被认为是美洲多种植物的害虫。尽管这种螨显然会对番荔枝科植物造成经济损害，但其生物学特性却鲜为人知。在此，我们研究了墨西哥叶螨在刺果番荔枝（番荔枝）、番荔枝（释迦果）和刺番荔枝（番荔枝科）上的生物学特性。前两个物种是巴西东北部最重要的经济番荔枝科物种；刺番荔枝在该地区很常见，但未进行商业开发。在开始观察之前，从刺果番荔枝的叶片上采集螨，并分别在刺果番荔枝、番荔枝和刺番荔枝的离体叶片上在实验室中饲养六个月。墨西哥叶螨在番荔枝上的发育比在其他两种寄主上更慢，但在刺番荔枝上的产卵量相当低。根据计算出的生命表参数表明，其在刺果番荔枝上的生物潜能高于其他寄主。尽管观察到墨西哥叶螨在不同评估寄主上的生物学特性存在差异，但在所使用的所有寄主上其发育和繁殖情况都令人满意。
