Evaluation of biological control of rattus population by mongoose (Herpestidae, Carnivora) in Abu-Musa Island, Iran
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文摘
To evaluate the rattus biological control program in Iranian Persian Gulf Island, Abu-Musa.

Methods

This study was conducted on the Iranian island of Abu-Musa during April 2012 to March 2013. The rattus trapping was done using commercial live and baited rat trap, in different parts of the island. Also the island of Qeshm, with a similar weather and climatic conditions in the Persian Gulf was considered as a control area, which any comprehensive rattus control plan has not been implemented during the implementation of rattus biological control program on Abu-Musa Island. All ectoparasites were collected and stored at 70% ethanol. Ectoparasites, including fleas, lice and mites were identified using identification keys. In addition, a number of released mongooses were captured and identified.

Results

Despite a year of trapping on the island, no rattus were caught in the traps. While on the island of Qeshm, as a control location, rate of rat trappings was estimated 33.3%. Among the 27 captured rodents in two islands, a total of 89 ectoparasites including fleas, Xenopsylla astia (32 females, 18 males) and Cetenocephalides felis (9 females, 7 males), louse, Polyplax spinulosa (8 females, 2 males) and mite, Laelaps nuttalli (13 females and males) were collected.

In this study, the introduced mongoose on the island of Abu-Musa, which has established and increased their population and been distributed in all parts of the island, was identified as Indian gray mongoose, Herpestes edwardsii.

Conclusions

The introduced Indian gray mongoosehas successfully eradicated the rattus population in island of Abu-Musa, but we have no information about its direct and indirect impacts on other native faunal elements of this island.

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