The mating sites of the reindeer nose bot fly: not a practical target for control
Abstract: The reindeer nose bot fly Cephenemyia trompe aggregates on hilltops/mountaintops to mate. A l t h o u g h active only for brief periods on certain days, males have been collected only from such sites. To evaluate possible suppression of the fly population by k i l l i n g males (by insecti...
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| Format: | Text |
| Language: | English |
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.1033.4805 http://septentrio.uit.no/index.php/rangifer/article/download/1167/1109/ |
| Summary: | Abstract: The reindeer nose bot fly Cephenemyia trompe aggregates on hilltops/mountaintops to mate. A l t h o u g h active only for brief periods on certain days, males have been collected only from such sites. To evaluate possible suppression of the fly population by k i l l i n g males (by insecticides or traps) at such sites, the density of sites and the number of males at each site were monitored in a summer grazing area of the semidomestic reindeer host (Rangifer tarandus) in Finnmark, northern Norway. In an area of ca. 20 k m 2, 19 mating sites were detected and examined during 4 hours on one day. The number of males observed at most sites was 5-16 (range 3-60). M i n o r hil l tops had few males but at some sites>20-60 flies were dispersed over an area of at least 100 m 2. It is concluded that mat ing sites in the study area are too numerous, and also used by many beneficial non-target species, to be practical targets for control of the species. |
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