Canals M, Cruzat L, Molina M C, Ferreira A, Cattan P E
Departamento de Ciencias Biológicas, Facultad de Ciencias Veterinarias, Universidad de Chile.
J Med Entomol. 2001 Mar;38(2):303-7. doi: 10.1603/0022-2585-38.2.303.
There are two vectors of the Chagas' disease in Chile: Triatoma infestans Klug the domestic vector and Mepraia spinolai Porter the sylvatic vector. The alimentary profile of M. spinolai has been poorly studied. In this work we study the participation of humans, goats, dogs, cats, rodents, rabbits, birds (hens) and reptiles in the diet of M. spinolai by analyzing the intestinal content through immunoradiometric assay. To put our results in a general context, we also compared the diet with that described for T. infestans. In decreasing order, we detected blood of rabbits, dogs, goats, rodents, humans, and birds (hens). There were 12.3% of insects infected with T. cruzi, but this fact was not significant for diet variance. In warm weather there was a larger diversity of alimentary sources than in a cold one. The niche breadth increased from 0.029 in cold weather to 0.464 in warm weather. The niche overlap of T. infestans and M. spinolai was 0.23.
家栖传播媒介克鲁格锥蝽（Triatoma infestans Klug）和野生传播媒介斯皮诺拉梅普锥蝽（Mepraia spinolai Porter）。对斯皮诺拉梅普锥蝽的食物构成研究较少。在本研究中，我们通过免疫放射分析肠道内容物，研究了人类、山羊、狗、猫、啮齿动物、兔子、鸟类（母鸡）和爬行动物在斯皮诺拉梅普锥蝽食物中的占比情况。为将我们的研究结果置于总体背景下，我们还将该食物构成与已描述的克鲁格锥蝽的食物构成进行了比较。我们检测到，按占比从高到低依次为兔子、狗、山羊、啮齿动物、人类和鸟类（母鸡）的血液。有12.3%的昆虫感染了克氏锥虫，但这一情况对食物构成差异并无显著影响。温暖天气下的食物来源比寒冷天气下更为多样。生态位宽度从寒冷天气下的0.029增加到温暖天气下的0.464。克鲁格锥蝽和斯皮诺拉梅普锥蝽的生态位重叠度为0.23。
