Hamann M I, Kehr A I, González C E
CONICET-CECOAL, C.C. 291, 3400-Corrientes, Argentina.
J Parasitol. 2006 Dec;92(6):1171-9. doi: 10.1645/GE-862R1.1.
One hundred seventy-two frogs (Leptodactylus chaquensis) were collected from November 2002 to November 2003, in agricultural (n = 132) and nonagricultural (n = 40) areas. Both sites are near the city of Corrientes, Argentina. The main goals of this study were as follows: (1) to determine the helminth parasite community in agricultural and nonagricultural habitats; (2) to analyze the relationships between helminth parasites and site of infection, frog body size, and gender; (3) to identify and examine covariation and association of helminth communities; and (4) to determine the mean richness and diversity of parasite communities. The helminth compound community of this amphibian species consisted of 24 species: 19 in agricultural habitats and 18 in nonagricultural habitats. The mean richness, mean diversity, and evenness of helminths were significantly different between the habitats (P < 0.05). The body size of the host was the important factor in determining parasite richness. Both habitats exhibited differences in community ordination. The helminth species in the 2 habitats exhibited the same interspecific relationships, although differences were observed in the intensity of infection.
2002年11月至2003年11月期间，在阿根廷科连特斯市附近的农业区（n = 132）和非农业区（n = 40）采集了172只查氏细趾蟾（Leptodactylus chaquensis）。本研究的主要目标如下：（1）确定农业和非农业栖息地中的蠕虫寄生虫群落；（2）分析蠕虫寄生虫与感染部位、蛙体大小和性别的关系；（3）识别并检查蠕虫群落的协变和关联；（4）确定寄生虫群落的平均丰富度和多样性。该两栖物种的蠕虫复合群落由24种组成：农业栖息地中有19种，非农业栖息地中有18种。栖息地之间蠕虫的平均丰富度、平均多样性和均匀度存在显著差异（P < 0.05）。宿主的体型是决定寄生虫丰富度的重要因素。两个栖息地在群落排序上存在差异。尽管在感染强度上存在差异，但两个栖息地中的蠕虫物种表现出相同的种间关系。
