Objective To assess the effect of the EP-1 on the population reproduction of the desert hamster Phodopus roborovskii. Methods Baiting bags containing a mixture of wheat and contraceptive compound EP-1 were placed in the field of Hunshandake Sandland, Xilin Gol League, Inner Mongolia, in late April, 2003. Monthly live-trapping survey were conducted from June to October to investigate the impact of EP-1 on the reproductive parameters and structure of the P. roborovskii population. Results EP-1 did not influence the sex ratio of the P. roborovskii population during the breeding season. In the baited area, EP-1 resulted in a 70%-80% decline in the proportion of juvenile hamsters, which lasted over 4 months. EP-1 profoundly damaged the uteri of approximately 80% of adult female hamsters within 2 months and such impact lasted more than 5 months. In addition, EP-1 significantly reduced the average litter size, which was 1-3 times smaller in the baited area than in the control area. Conclusion In Hunshandake Sandland, a single delivery of EP-1 in spring is effective in controlling the population of P. roborovskii during the breeding season. However, the impact of EP-1 on the reproduction of P. roborovskii population declines over time, which may be explained by the dispersal behavior of P. roborovskii.
ZHANG Wen-jie, ZHANG Xiao-qian, WAN Xin-rong, CHEN Wei, LI Fu-sheng, DENG Biao,Hasibaolidao, GONG He-ping, BAO Hong-ming
. Effect of contraceptive compound EP-1 on populationreproduction of desert hamster Phodopus roborovskiiin Hunshandake Sandland, China[J]. Chinese Journal of Vector Biology and Control, 2014
, 25(6)
: 542
-545
.
DOI: 10.11853/j.issn.1003.4692.2014.06.015
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