Sunday, March 7, 2010

Trapping rodents!

After the long-awaited arrival of Sherman traps, we can begin trapping the larger rodents as well - Ship rat Rattus rattus and Norway rat Rattus norvegicus.
As we had already published earlier, last January we began trapping Wild mice Mus domesticus in Biological Reserve of Corvo, High Biological Reserve and 2 non-intervention areas at different altitudes (30 and 400 m above sea level). With the arrival of Sherman traps we could twice enlarge the trapping grids for 25 Sherman and 24 Pest-stop and so also start trapping Rattus sp. in order to estimate the variation of the density of rodents throughout the year.
The grids are set in field like next photo. Of course the small Pest-stop go unnoticed amid the huge Sherman.

Biological Reserve of Corvo


The results were not slow to appear. Wild mice are being high caught in lowland areas where yesterday we already captured the first ship rat.

Wild mice Mus musculus

Hopefully able to post some data soon.
Hugs

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