增加的个体数量的潜在宿主促进非光同步在吸血昆虫三角虫侵染。

IF 2.5 4区 医学 Q2 PARASITOLOGY
Veronica Sandra Valentinuzzi/, Luciana Beatriz Abrahan
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引用次数: 0

摘要

背景:南美锥虫(Triatoma infestans)是拉丁美洲引起恰加斯病的主要寄生虫媒介。这个物种表现出清晰的活动节奏,很容易与昼夜周期(光周期)同步。这些昆虫的噬血性使我们认为它们可能暂时适应潜在宿主的特定活动节奏(非光循环)。我们之前的数据表明,接吻虫受单个宿主活动-不活动节律的影响很小。目的:确定是否通过增加潜在宿主的个体数量,感染弓形虫可以增加同步的可能性。方法:连续监测实验昆虫的个体活动节律,将实验昆虫置于密闭密闭的恒定黑暗环境中,放置在24只啮齿动物的房间中。另一组昆虫作为对照,在相同的条件下,但在没有啮齿动物的房间里。发现:大多数实验昆虫同步,表达24小时的周期与啮齿动物的活动-不活动节律一致,而对照组的自由运行周期明显超过24小时。结论:类似于光同步者在高光强度和低光强度下发生的情况,与之前的单啮齿动物实验相比,大量啮齿动物增加了这种非光性授时合子的能力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

An increased number of individuals of a potential host facilitates non-photic synchronisation in the haematophagous insect Triatoma infestans.

An increased number of individuals of a potential host facilitates non-photic synchronisation in the haematophagous insect Triatoma infestans.

An increased number of individuals of a potential host facilitates non-photic synchronisation in the haematophagous insect Triatoma infestans.

An increased number of individuals of a potential host facilitates non-photic synchronisation in the haematophagous insect Triatoma infestans.

Background: Triatoma infestans (Kissing bug) is the main vector of the parasite causative of Chagas disease in Latin-America. This species shows clear activity rhythms easily synchronised to day-night cycles (photic cycle). The haematophagous nature of these insects lead us to think that they may temporally adapt to the particular activity rhythms of potential hosts (non-photic cycle). Our previous data showed that kissing bugs were weakly affected by the activity-inactivity rhythm of a single host.

Objetive: To determine if by increasing the number of individuals of a potential host, T. infestans could increase the likelihood of synchronisation.

Methods: Individual activity rhythms of experimental insects, maintained in constant darkness in light-tight cabinets, localised in a room with 24 rodents, were continuously monitored. Another insect group that served as control was maintained in the same conditions but in a room without rodents.

Findings: Most of the experimental insects synchronised, expressing a 24 h period coincident with the activity-inactivity rhythms of the rodents, while the controls free ran with a period significantly longer than 24 h.

Conclusion: Analogous to what happens with high vs low light intensity in photic synchronisers, a high number of rodents, in contrast to the previous one-rodent experiment, increased the potency of this non-photic zeitgeber.

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来源期刊
CiteScore
5.00
自引率
3.60%
发文量
91
审稿时长
3-8 weeks
期刊介绍: Memórias do Instituto Oswaldo Cruz is a journal specialized in microbes & their vectors causing human infections. This means that we accept manuscripts covering multidisciplinary approaches and findings in the basic aspects of infectious diseases, e.g. basic in research in prokariotes, eukaryotes, and/or virus. Articles must clearly show what is the main question to be answered, the hypothesis raised, and the contribution given by the study. Priority is given to manuscripts reporting novel mechanisms and general findings concerning the biology of human infectious prokariotes, eukariotes or virus. Papers reporting innovative methods for diagnostics or that advance the basic research with these infectious agents are also welcome. It is important to mention what we do not publish: veterinary infectious agents research, taxonomic analysis and re-description of species, epidemiological studies or surveys or case reports and data re-analysis. Manuscripts that fall in these cases or that are considered of low priority by the journal editorial board, will be returned to the author(s) for submission to another journal.
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