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Gewählte Master / Diploma Thesis:

Wiebke Blume (2011): Optimierung des Fangerfolges von Kleinsäugerfallen - eine Methodenanalyse.
Master / Diploma Thesis - Institut für Wildbiologie und Jagdwirtschaft (IWJ), BOKU-Universität für Bodenkultur, pp 82. UB BOKU obvsg

Data Source: ZID Abstracts
Abstract:
Over a period of two months three trap types (wooden box trap, Sherman trap und Trip trap) have been tested in a homogeneous forest stand in the Ötscher-Törmauer nature reserve in located in Lower Austria. The catch ratio of three consecutive days and night catches followed by a break of 5 days has been tested for its success. The influence of mice odour on catch success rates on small mammals was investigated. The influence of flour worms on catch success rates was investigated. Furthermore the influence of surrounding habitats on trap locations formed a part of this study. The study resulted in 337 catches of small mammals during 48 trap visits within the study area. With a total of 196 (including re-catches) Apodemen presented the majority of catches. A total of 114 catches (including re-catches) was recorded for Myodes glareolus followed by Soriciden with 25 catches. The lowest catch number was recorded for species Microtus subterraneus that was caught two times (including re-catch). A comparison of first catches and re-catches showed dominance of re-catches. As suspected in the hypothesis, the study showed that odour is an important influencing factor in catch success. Traps without mice odour caught more male individuals, a result also observed by BÄUMLER et. al, (1987). The study revealed that wooden box traps were favoured instead of Sherman traps were as Trip traps showed the lowest acceptance rate. The study further revealed that every species preferred a certain trap type: the majority of Myodes glareolus were caught in wooden box traps; Apodemen were caught in Sherman traps and Soricidae were predominantly caught in Trip traps. There was no difference observed between Trip traps prepared with and without mouse odour. The use of flour worms was highly important for catch success of Soricidae but has not been relevant for other species. The initial hypothesis that flour worms would provide an improved catch success rate can therefore only be partly confirmed. The second hypothesis that an optimal trap position would positively influence the catch success rate has been confirmed in this study. A densely vegetated ground was the most important factor for small mammals.

Beurteilende(r): Hackländer Klaus
1.Mitwirkender: Hille Sabine

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