| 【Objective】In order to elucidate the seasonal variation trend of the activity rhythm of Bandicota
indica, the behavior rhythm of B. indica in rat pond under high temperature in summer was studied.【Method】One rat
was cultured in every pond and infrared camera monitoring system was used to automatically record all kinds of behavior
of B. indica in the pond.【Result】In hot summer, B. indica began to leave the nest and forage at 18：00 p m and such
activities lasted until 4：00 a m the next day. The peak period of the activity out of the nest appeared between 19：00
and 3：00 a m. In the nest the B. indica had behaviors such as resting, sleeping, self-modification, looking around and
burrowing. 82.82% of the time was used for resting and sleeping, accounting for 54.24% of the total time of activities the
whole day. There were many activities out of nest, such as looking around, running, feeding, drinking, self-modification
and burrowing. The main activities were looking around and running, accounting for 38.58% and 34.75% of the total time
of out-of-nest activities, respectively. The behavior rhythm of feeding and drinking was basically the same, and the total
time of feeding was significantly higher than that of drinking. Self-modification and burrowing were evenly distributed
throughout the day, and 53.54% of the modification activities took place out of the nest.【Conclusion】B. indica spent most of time resting in the nest during the day, and activities were carried out at night, the activity rhythm of which belonged
to the type of hiding in the daytime and coming out at night. There were some differences in time distribution between the
activities inside and outside the nest. |
