Martínez-Ibarra J A, Grant-Guillén Y, Nogueda-Torres B, Villagrán-Herrera M E, de Diego-Cabrera J A, Bustos-Saldaña R
Laboratory of Medical Entomology, Department of Natural Sciences, University of Guadalajara, Ciudad Guzman, Mexico.
Department of Parasitology, National School of Biological Sciences, National Polytechnic Institute, Casco de Santo Tomas, Mexico City, Mexico.
Med Vet Entomol. 2018 Dec;32(4):497-503. doi: 10.1111/mve.12332. Epub 2018 Aug 20.
Chagas disease is one of the most important vector-borne diseases in Latin America, including Mexico. Meccus phyllosomus pallidipennis (Stål), 1872 (Hemiptera: Reduviidae) is a Mexican triatomine vector that is commonly associated with hens and rabbits. The biological parameters of two cohorts fed on hens (H) and on rabbits (R) were evaluated. The median lifecycles of the two cohorts were 198 days (H) and 180 days (R). Moreover, mortality was around 30% in both cohorts. Time lapse for beginning of feeding was 0.5-1.9 (H) and 1.1-2.4 min (R). Feeding times of each instar in both cohorts were over 10 min. Most specimens fed on hens defecated immediately after feeding, whereas those that fed on rabbits defecated within 1-5 min post-feeding. Similar numbers of males and females (50%) were obtained in both cohorts. An average of 2.1-2.3 eggs per female per day was noted in both cohorts, with eclosion rates of 95.4 (H) and 88.8% (R). Thus, it can be concluded that M. phyllosomus pallidipennis may take advantage of feeding in hens, as in rabbits, which could imply a higher risk of Trypanosoma cruzi transmission to humans and animals in its distribution area.
恰加斯病是拉丁美洲（包括墨西哥）最重要的媒介传播疾病之一。1872年的苍白长红猎蝽（半翅目：猎蝽科）是一种墨西哥锥蝽媒介，通常与母鸡和兔子有关。评估了以母鸡（H）和兔子（R）为食的两个群体的生物学参数。两个群体的平均生命周期分别为198天（H）和180天（R）。此外，两个群体的死亡率均约为30%。开始进食的时间间隔为0.5 - 1.9分钟（H）和1.1 - 2.4分钟（R）。两个群体中各龄期的进食时间均超过10分钟。大多数以母鸡为食的标本在进食后立即排便，而以兔子为食的标本在进食后1 - 5分钟内排便。两个群体中获得的雄性和雌性数量相似（50%）。两个群体中每只雌性每天平均产卵2.1 - 2.3枚，孵化率分别为95.4%（H）和88.8%（R）。因此，可以得出结论，苍白长红猎蝽可能像以兔子为食一样，利用以母鸡为食的机会，这可能意味着在其分布区域向人类和动物传播克氏锥虫的风险更高。
