Keywords :
Carbon-1 3; Isoptera; Lichen-feeder; Natural variations; Nitrogen-] 5;
Soil-feeder; Termite; Uric acid; Wood-feeder
บทคัดย่อ :
Nitrogen and carbon stable isotope ratios and uric acid concentrations in termites sampled from a dry evergreen forest in Thailand, were determined across three kinds of feeding habits. Feeding habits of Microcerotermes crasstu, which is an abundant wood-feeder, and Dicuspiditermes makhamensis, a common soil-feeding termite, were confinned by isotopic signatures. Lichen feeding termites (Hositolitermes birmanicus, H. bicolor and H. atarumensis) were characterized by low 6 N values, suggesting that they assimilated nitrogen deposited from the atmosphere. There was also a significant difference in uric acid concentrations between termites representing different feeding habits. No significant relationships were found between uric acid concentrations and 6"N or 6I3C in Hospiralitermes. However, 6"N values were correlated with C/N ratios in H. birmanicus, except in one colony of H. ataramensis. 6I3C values in both species were negatively correlated with C/N ratios.
เอกสารอ้างอิง :
Tayasu, I., Hyodo, F., Takematsu, Y., Sugimoto, A., Inoue, T., Kirtibutr, N., & Abe, T. (2000). Stable Isotope Ratios and Uric Acid Preservation in Termites Belonging to Three Feeding Habits in Thailand. Isotopes in Environmental and Health Studies, 36(3), 259-272.
