Phoretic mite infestations associated with Rhynchophorus palmarum (Coleoptera: Curculionidae) in southern California
Phoretic mite infestations associated with Rhynchophorus palmarum (Coleoptera: Curculionidae) in southern California
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DOI：
10.11158/saa.26.10.6
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发表时间：
2021-09-01
影响因子：
1.2
通讯作者：
Hoddle, Mark S.
中科院分区：
文献类型：
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作者：
Gomez-marco, Francesc;Klompen, Hans;Hoddle, Mark S.
南美棕榈象甲Rhynchophorus palmarum（鞘翅目：金龟子科），大约在2014年的某个时候在美国加州圣地亚哥县建立。在该害虫的成虫上，发现有尾足螨3种（寄生目：尾足螨属），中尾足螨属（Centrouropoda n. sp.，狄尼库斯; sp.和边缘褐足虫（Fuscuropoda marginata）。其中两个物种，Centrouropoda n。sp.和钩爪螨Dinychus n. SP .在美国首次记录，可能是由R.手掌几种螨，主要是尾足螨，以前曾被记录为Rhynchophorus spp.的泳虫。本研究对3，035只成年红蜘蛛进行了调查。在2016年7月至2018年12月的2.5年期间捕获的palmarum，并记录了泳螨的存在和物种组成及其与象鼻虫形态学的关系（即，前胸背板的长度和宽度）。在调查期间，象鼻虫身体部位上螨的存在和物种组成发生了变化。2016年在象鼻虫鞘翅下没有发现螨，由于Centrouropoda n的丰度增加，鞘翅下螨的患病率在2017-2018年增加。个体甲虫。螨的发生水平显着相关，减少前胸背板宽度的男性象甲。这一发现对雄性象鼻虫健康的意义尚不清楚。泳螨对红胸水螨入侵生物学方面的潜在意义。讨论了棕榈。
The South American palm weevil, Rhynchophorus palmarum (Coleoptera: Curculionidae), established in S an Diego County, California, USA sometime around 2014. Attached to the motile adults of this destructive pal m pest, we identified three species of uropodine mites (Parasitiformes: Uropodina), Centrouropoda n. sp., Dinychus n. sp. and Fuscuropoda marginata. Two of these species, Centrouropoda n. sp. and Dinychus n. sp . are recorded for the first time in the USA and were likely introduced by R. palmarum. Several species of mites, primarily of Uropodina, have previously been recorded as phoretic on Rhynchophorus spp. In this study, w e examined 3,035 adult R. palmarum trapped over a 2.5-year period, July 2016 to December 2018, an d documented the presence of and species composition of phoretic mites and their relationship with weevil morphometrics (i.e., pronotum length and width). The presence and species composition of mites on weevil body parts changed over the survey period. No mites were found under weevil elytra in 2016 and mite prevalence under elytra increased over 2017-2018 due to an increased abundance of Centrouropoda n. sp pe r individual beetle. Mite occurrence levels were significantly correlated with reduced pronotum widths of male weevils only. The significance of this finding on male weevil fitness is unknown. Potential implications o f phoretic mites on aspects of the invasion biology of R. palmarum are discussed.