Thrips hawaiiensis is a common thrips pest that damages the flowers of various plants. The differing population sizes of T. hawaiiensis among host plants suggest its preference and performance vary among host plants. In this study, the host fitness of T. hawaiiensis for different flowers was assessed through field investigation. The behavioral responses of T. hawaiiensis to the color and volatiles of flowers eliciting different apparent fitness levels and their development and survival on the plants were also studied. Adults and larvae of T. hawaiiensis were found in the flowers of 21 species, which were classified into four fitness levels for this thrips species. T. hawaiiensis showed significantly different visual responses to the color and olfactory responses to the volatiles of four tested flowers (each representing one of the four fitness levels), with the rankings of visual preferences for Dianthus caryophyllus > Tulipa gesneriana > Hydrangea macrophylla > Rosa rugosa, and olfactory preferences for H. macrophylla ≥ T. gesneriana > D. caryophyllus > R. rugosa. Plant species had significant influences on the development and survival of T. hawaiiensis, with developmental times from egg to adult of 9.58 d, 9.92 d, 10.35 d and 10.75 d on H. macrophylla, T. gesneriana, D. caryophyllus and R. rugosa, respectively, and corresponding survival rates of 76.33%, 71.33%, 64.00% and 59.00%. In summary, this study shows that olfactory preferences were consistent with the field performance of T. hawaiiensis on the four flower plants tested. Further, fitness levels of host plant flowers are correlated with development rate and survivorship of T. hawaiiensis. Our study adds to the understanding of the mechanism of host selection by thrips and provides basic information to underpin the management of T. hawaiiensis on horticultural plants.

蓟马是一种常见的蓟马害虫，危害各种植物的花朵。T. hawaiiensis在寄主植物中的不同种群大小表明其偏好和性能因寄主植物而异。在这项研究中，通过实地调查评估了夏威夷木对不同花卉的寄主适应性。还研究了T. hawaiiensis对花的颜色和挥发物的行为反应，引起不同的表观健康水平及其在植物上的发育和存活。T. hawaiiensis成虫和幼虫在 21 种花中发现，该蓟马分为 4 个适应度等级。夏威夷山毛榉对四种测试花的颜色和嗅觉反应显示出显着不同的视觉反应，对四种测试的花朵（每一种代表四种健康水平之一）的挥发物的视觉反应，对石竹 > 郁金香 > 绣球花 > 蔷薇和嗅觉的视觉偏好排名H. macrophylla  ≥  T. gesneriana  >  D. caryophyllus  >  R. rugosa 的偏好。植物种类对发展和生存显著影响T. hawaiiensis，从卵到9.58 d，9.92 d，10.35 d和10.75 d上的成人发育倍H.艽, T. gesneriana , D. caryophyllus和R. rugosa，分别对应的成活率分别为 76.33%、71.33%、64.00% 和 59.00%。总之，本研究表明，嗅觉偏好与夏威夷木犀对四种受试花卉植物的田间表现一致。此外，寄主植物花卉的健康水平与夏威夷木犀的发育速度和存活率相关。我们的研究增加了对蓟马选择宿主机制的理解，并提供了基础信息，以支持园艺植物上夏威夷蓟马的管理。