Natural ecotope and feeding habits of Triatoma arthurneivai (Hemiptera: Reduviidae) in Espinhaço Mountain Range, State of Minas Gerais, Brazil

IF 2.5 3区医学 Q2 PARASITOLOGY

Acta tropica Pub Date : 2025-09-20 DOI:10.1016/j.actatropica.2025.107846

João Victor Leite Dias , Maysa Farias de Almeida Araújo , Alexandre Ferreira Righi , Sílvia Ermelinda Barbosa , Liléia Gonçalves Diotaiuti , Herton Helder Rocha Pires

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Abstract

Triatoma arthurneivai Lent & Martins 1940 is a rupicolous triatomine species only found in the Brazilian state of Minas Gerais. Little is known about its ecology, and the more recent records are restricted to adults captured in domiciles or light traps, with little or no information on its feeding habits or natural ecotopes. We report the very first finding of T. arthurneivai in nature and describe its feeding habits. After several unsuccessful attempts by our team to find the species in nature, we coincidentally received pictures of T. arthurneivai from two hiking biologists. Then, two field campaigns through an active search of triatomines were carried out in the surroundings of the city of Diamantina, close to the sight site, to find these insects. A total of 23 nymphs were captured among rocks of a rocky outcrop in a campo rupestre phytofisionomic landscape. The feeding behaviour was directly observed during the search when nymphs were seen blood-sucking on a treefrog of the species Bokermannohyla alvarengai (Bokermann, 1956) (Anura: Hylidae). Two other nymphs were subjected to molecular detection of blood sources in their intestinal content through DNA sequencing, which revealed the presence of Tropidurus montanus Rodrigues 1987 (Squamata: Tropiduridae) DNA. The feeding habits of T. arthurneivai in nature and under laboratory conditions reveal its eclecticism. Human disturbances in campos rupestres, including urbanisation, might favour the contact between these species and humans and/or synanthropic/domestic animals.

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巴西米纳斯吉拉斯州埃斯帕纳帕拉多山区阿氏斑蝽的自然生态环境和摄食习性（半翅目：斑蝽科）

Triatoma arthurneivai Lent & Martins 1940是一种只在巴西米纳斯吉拉斯州发现的稀有triatomine物种。对其生态知之甚少，最近的记录仅限于在住所或灯光陷阱中捕获的成虫，很少或根本没有关于其摄食习惯或自然生态的信息。我们报道了在自然界中首次发现的T. arthurneivai，并描述了它的摄食习性。经过几次不成功的尝试，我们的团队在自然界中找到了这个物种，我们巧合地从两位徒步旅行的生物学家那里收到了T. arthurneivai的照片。然后，在迪亚曼蒂纳市附近，靠近目击地点，开展了两次实地活动，积极寻找三蝽，以寻找这些昆虫。在campo rupestre植物分裂景观的岩石露头的岩石中共捕获了23只若虫。在寻找过程中，当看到若虫吸血于Bokermannohyla alvarengai (Bokermann, 1956)（无尾目：水螅科）的树蛙时，直接观察到其摄食行为。另外2只稚虫通过DNA测序对其肠道内容物进行了血源分子检测，结果显示存在troidurus montanus Rodrigues 1987 (Squamata: troidurididididididae) DNA。T. arthurneivai在自然界和实验室条件下的摄食习性揭示了它的折衷主义。人类对校园环境的干扰，包括城市化，可能有利于这些物种与人类和/或共生/家畜之间的接触。

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来源期刊

Acta tropica 医学-寄生虫学

CiteScore

5.40

自引率

11.10%

发文量

383

审稿时长

37 days

期刊介绍： Acta Tropica, is an international journal on infectious diseases that covers public health sciences and biomedical research with particular emphasis on topics relevant to human and animal health in the tropics and the subtropics.