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Eradication of common mynas Acridotheres tristis from Denis Island, Seychelles

Feare, C. J., van der woude, J., Greenwell, P., Edwards, H. A., Taylor, J. A., Larose, C. S., Ahlen, P-A., West, J., Chadwick, W., Pandey, S., Raines, K., Garcia, F., Komdeur, J. & de Groene, A., Feb-2017, In : Pest management science. 73, 2, p. 295-304 10 p.

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  • Eradication of common mynas Acridotheres tristis from Denis Island, Seychelles

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DOI

  • Chris J. Feare
  • Jildou van der woude
  • Phill Greenwell
  • Hannah A. Edwards
  • Jenni A. Taylor
  • Christine S. Larose
  • Per-Arne Ahlen
  • Jack West
  • Will Chadwick
  • Smita Pandey
  • Katherine Raines
  • Fernando Garcia
  • Jan Komdeur
  • Arjan de Groene

BACKGROUND: In Seychelles, the common myna has been shown to have a negative impact on endangered endemic birds on Denis Island, interfering with breeding attempts and attacking adult endemic birds at their nests. This stimulated an attempt to eradicate the island's mynas.

RESULTS: The eradication was undertaken in three phases, overall killing 1186 mynas and lasting 5 years. Decoy trapping was the most effective method for catching mynas, but the last birds were shot. Decoy trapping was compromised by catches of non-target species. Data collection from killed birds indicated that trapping did not favour either sex, and that most breeding occurred during the wetter season, November to March.

CONCLUSIONS: Eradication of mynas from small tropical islands is feasible. The Denis Island eradication was prolonged by difficulties in management and staffing. Using volunteers, the cost of the eradication was similar to that of eradicating rodents from the island. In future eradication attempts in Seychelles, possible food stress during the drier season ( May to September) might facilitate trapping at this time. Habitat management, especially the removal of short mown grass, could enhance eradication progress. Continued monitoring is needed to confirm eradication and detect any immigration, and also to record responses in the endemic birds. (C) 2016 Society of Chemical Industry

Original languageEnglish
Pages (from-to)295-304
Number of pages10
JournalPest management science
Volume73
Issue number2
Early online date1-Apr-2016
Publication statusPublished - Feb-2017

    Keywords

  • common myna, Acridotheres tristis, invasive alien species, eradication, Denis Island, island restoration, wildlife management, NATIVE PARROTS, INVASIVE BIRD, POPULATION, SPREAD, MAMMALS, IMPACT, MOLT

ID: 32454228