Desiccation tolerance of the tardigrade Milnesium tardigradum collected in Sapporo, Japan, and Bogor, Indonesia.
A tardigrade Milnesium tardigradum showed anhydrobiotic capacity, in which the desiccation tolerance, given by the mean survival rate under desiccation at different relative humidity levels, was significantly higher in the Sapporo (Japan) population than that in the Bogor (Indonesia) population. Accordingly, the surviving tardigrades took a significantly longer time for revival in Bogor than those in Sapporo. The higher tolerance of the Sapporo population is thought to be related to the low relative humidity and low temperature such that the animals experience 41% RH in May and often -10 degrees C or lower in winter.
Horikawa
Daiki D
DD
Graduate School of Environmental Earth Science, Hokkaido University, Sapporo 060-0810, Japan. tardig@ees.hokudai.ac.jp
Higashi
Seigo
S
D000222:Adaptation, Physiological / Q000502:physiology*; D000704:Analysis of Variance; D000818:Animals; D003681:Dehydration; D005843:Geography; D006813:Humidity; D007214:Indonesia; D007448:Invertebrates / Q000502:physiology*; D007564:Japan; D012044:Regression Analysis; D012621:Seasons; D013045:Species Specificity; D016019:Survival Analysis; D013696:Temperature; D013997:Time Factors