نتایج جستجو برای: bombus
تعداد نتایج: 1281 فیلتر نتایج به سال:
BACKGROUND Accurate estimates of movement behavior and distances travelled by animals are difficult to obtain, especially for small-bodied insects where transmitter weights have prevented the use of radio-tracking. METHODOLOGY/PRINCIPAL FINDINGS Here, we report the first successful use of micro radio telemetry to track flight distances and space use of bumblebees. Using ground surveys and Ces...
Bumble bees (Bombus) are a cold-adapted, largely alpine group that can elucidate patterns of Holarctic historical biogeography, particularly in comparison to the alpine plants with which they likely coevolved. A recently published molecular phylogeny of bumble bees provides uniquely comprehensive species sampling for exploring historical patterns of distribution and diversification. Using this ...
This research was conducted over a period of one year from the beginning of spring until mid autumn in 1996, during the bloom of all flowering plants in the region, when pollinator bees were collected with insect veil. Some of them were preserved in 80% ethylalcohol and some were dried, coded, kept in insect box and transferred to the laboratory for identification. The collected insects were id...
This research was conducted over a period of one year from the beginning of spring until mid autumn in 1996, during the bloom of all flowering plants in the region, when pollinator bees were collected with insect veil. Some of them were preserved in 80% ethylalcohol and some were dried, coded, kept in insect box and transferred to the laboratory for identification. The collected insects were id...
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