Description of Nine Species of the Family Cephalobidae (Nematoda, Rhabditida) and Morphometric Analysis in the Genus Acrobeles von Linstow, 1877

摘要

During the survey of the natural areas in Northeastern Iran (Semnan Province) nine species of cephalobid were found. Acrobeles andalusicus, A. ciliatus, A. undulatus, Chiloplacus demani, C. minimus, Eucephalobus hooperi, Heterocephalobellus magnificus, Pseudacrobeles variabilis and Zeldia punctata were recorded for first time from Iran. In addition, correlations of morphometric data within the species of the genus Acrobeles von Linstow, 1877 were obtained with SPSS 13. The results showed that body length has high significant correlation with all morphometric data indexed in the measurement table. Furthermore, ovary with postuterine sac and spermatheca, and position of the vulva has significant correlation in females. The body length has correlation just with rectum and spicules in males. However body length has significant correlation with b index in females and c index in males only. In study of ratios, the results revealed that b and c' are more reliable to evaluate the species. Descriptions, measurements and illustrations are presented for all the species.