Phoresy and Within-colony Transmission of Nematodes Associated with Alates of Subterranean Termites (Isoptera: Rhinotermitidae)
Phoresy and Within-colony Transmission of Nematodes Associated with Alates of Subterranean Termites (Isoptera: Rhinotermitidae)
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与地下白蚁（等翅目：鼻白蚁科）有翼相关的线虫的游动和群内传播
DOI：
10.1093/ee/nvy093
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发表时间：
2018
影响因子：
1.7
通讯作者：
Kanzaki Natsumi
中科院分区：
文献类型：
--
作者：
Foley Jeremiah R;Chouvenc Thomas;Giblin-Davis Robin M;Su Nan-Yao;Kanzaki Natsumi
白蚁及其巢穴是包括线虫在内的多种分类群的潜在资源。在白蚁群体的扩散飞行事件中，巢中的共生线虫可能有机会利用白蚁有翅类作为运输宿主。两种地下白蚁Coptotermes gestroi（Wasmann）和Coptotermes formosanusShiraki都是入侵性的，并在佛罗里达南部定居。在2015-2016年的扩散飞行事件中，从六个地点收集了这两个物种的翅虫（n= 245），其中30个（12.2%）与一种或多种线虫有关。从白蚁有翅类中分离到的BunonemaJägerskiöld（小杆纲：Bunonematidae）、HalicephalobusTimm（小杆纲：Panagrolaidae）和Poikilolaimusregenfussi（Sudhaus）Sudhaus和Koch（小杆纲：Rhabditidae）的种类分别为5.3%、4.9%和0.4%，BunonemaHalicephalobus和Halicephalobus共存的有翅类占1.6%。附加C.在无菌饲养容器（SRC）中，野外收集台湾产线虫以建立实验室菌落，以确定有翅类相关线虫是否会定殖于新建立的巢和/或幼仔。在1岁的白蚁菌落饲养的SRC中，26.9%的菌落呈阳性线虫确认内的菌落传播的线虫发生。所有三个分离的线虫属都是能够无性繁殖的自由生活的食菌动物。这表明，这些常见的共同发生，白蚁相关的线虫是机会和兼性共生体，在白蚁扩散飞行事件期间通过phoresy获得地理分散的机会增加。
Termites and their nests are potential resources for a wide assemblage of taxa including nematodes. During dispersal flight events from termite colonies, co-occurring nematodes in the nest may have phoretic opportunities to use termite alates as transportation hosts. The two subterranean termite speciesCoptotermes gestroi(Wasmann) andCoptotermes formosanusShiraki are both invasive and established in south Florida. Alates of both species (n= 245) were collected during dispersal flight events in 2015–2016 from six locations, of which 30 (12.2%) were associated with one or more species of nematodes. Species ofBunonemaJägerskiöld (Rhabditida: Bunonematidae),HalicephalobusTimm (Rhabditda: Panagrolaimidae), andPoikilolaimus regenfussi(Sudhaus) Sudhaus and Koch (Rhabditida: Rhabditidae) were isolated from 5.3, 4.9, and 0.4% of termite alates, respectively, andBunonemaandHalicephalobuswere concomitant in 1.6% of alates. AdditionalC. formosanusalates were field-collected to establish laboratory colonies in sterilized rearing containers (SRC) to determine if alate-associated nematodes would colonize the newly established nest and/or brood. Among 1-yr-old termite colonies reared in SRCs, 26.9% of the colonies were positive for nematodes confirming that within-colony transmission of nematodes occurred. All three isolated nematode genera are free-living bacterivores capable of asexual reproduction. This suggests that these common co-occurring, termite-associated nematodes are opportunistic and facultative symbionts that receive increased opportunities of geographical dispersion through phoresy during termite dispersal flight events.