BEHAVIOUR OF BOMBUS ON DIGITALIS SPP.
نویسندگان
چکیده
منابع مشابه
Spatio-temporal dynamics of bumblebee nest parasites (Bombus subgenus Psythirus ssp.) and their hosts (Bombus spp.).
1. A 39-year bumblebee data base was used to study the codistribution of six cuckoo bumblebees in the subgenus Psythirus of Bombus (hereafter called Psythirus) and their free-living bumblebee hosts in the British Isles. 2. A model of nest parasitism predicted host threshold densities and stable deterministic dynamics, with fluctuations only emerging as a result of environmental or demographic s...
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BACKGROUND Bumble bees and other wild bees are important pollinators of wild flowers and several cultivated crop plants, and have declined in diversity and abundance during the last decades. The main cause of the decline is believed to be habitat destruction and fragmentation associated with urbanization and agricultural intensification. Urbanization is a process that involves dramatic and pers...
متن کاملSpace Use of Bumblebees (Bombus spp.) Revealed by Radio-Tracking
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...
متن کاملتنوع گونهای زنبورهای مخملی (. Bombus spp ) در دو منطقه کوهستانی البرز مرکزی ایران
The species diversity of bumblebees was investigated in two provinces, Tehran (Fasham, Zayegan) and Qazvin (Alamut, Wikan) in central Alborz during 2005-2006. Three casts of queen, worker and male bumblebees were collected during spring and summer in six dates in the two mentioned regions. Sampling of adult bees in Wikan was done from 26 July 2006 until 19 September 2006, and in Zayegan from 24...
متن کاملتنوع گونهای زنبورهای مخملی (. Bombus spp ) در دو منطقه کوهستانی البرز مرکزی ایران
The species diversity of bumblebees was investigated in two provinces, Tehran (Fasham, Zayegan) and Qazvin (Alamut, Wikan) in central Alborz during 2005-2006. Three casts of queen, worker and male bumblebees were collected during spring and summer in six dates in the two mentioned regions. Sampling of adult bees in Wikan was done from 26 July 2006 until 19 September 2006, and in Zayegan from 24...
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ژورنال
عنوان ژورنال: New Phytologist
سال: 1968
ISSN: 0028-646X,1469-8137
DOI: 10.1111/j.1469-8137.1968.tb05498.x