Investigations of pollen loads on wild bees (Hymenoptera Apoidea)

Part of the diplom thesis 1992
Friederike Erlinghagen
Wilhelm-Raabe-Weg 6, D-30938 Burgwedel, Germany
Email: f.erlinghagen@gmx.de

Table 1 No. of visited plant species while a single flight of pollen collecting in %. All data base on pollen analytical investigations. In contrast to Brian, Hasselrot, Macior and Richards pollen with a lower part of 5 % was assessed as intake pollen by chance ( method and discussion Westrich & Schmidt 1986).

No. of visited plant species 1 2 3 4 5 6 7
BRIAN (1954)   49.5 30.3 11.6 5.8 1.6 1.1 0.3
HASSELROT (1960) Social, polylectic 61.9 27.3 7.9 2.3 0.3 0.3 0.1
MACIOR (1968) (gen. Bombus Latr.) 55.4 30.6 11.3 2.7      
RICHARDS (1973)   50.0 38.6 8.6 0.7      
ERLINGHAGEN (1991)   61.9 35.7   2.4      
ERLINGHAGEN (1991) Solitär, polylectic 37.0 63          
ERLINGHAGEN (1991) Solitär, oligolectic   1*          
ERLINGHAGEN (1991) Honey bee (Apis mellifera) 100            

* absolute no. (Andrena agilissima as a oligolectic species collected pollen of Sinapis arvensis and Brassica napus, both belong to the family of Brassicaceae)

Fig. 1 Andrena agilissima female (photo: Westrich, P. 1989b)
Fig. 1 Andrena agilissima female (photo: Westrich, P. 1989b)
Fig. 2 Pollen load, metatarsus of Andrena agilissima (photo: electron microscope, 60 x enlargement, Erlinghagen 1991)
Fig. 2 Pollen load, metatarsus of Andrena agilissima (photo: electron microscope, 60 x enlargement, Erlinghagen 1991)
Fig. 3 Type of Brassicaceae (trizonocolpat: reticulat) (photo: electron microscope, 600 x enlargement, Erlinghagen 1991)
Fig. 3 Type of Brassicaceae (trizonocolpat: reticulat) (photo: electron microscope, 600 x enlargement, Erlinghagen 1991)
Fig. 4 Pollen (tricolpat) (photo: electron microscope) (Erlinghagen 1991)
Fig. 4 Pollen (tricolpat) (photo: electron microscope) (Erlinghagen 1991)
Fig. 5 Pollen of Knautia arvensis (Dipsacaceae). Glycerin gelatine preparation (microscope, 480 x enlargement) (Erlinghagen 1991)
Fig. 5 Pollen of Knautia arvensis (Dipsacaceae). Glycerin gelatine preparation (microscope, 480 x enlargement) (Erlinghagen 1991)

References

Brian, A.D. (1954): The foraging of bumblebees. Bee world, 35: 61-91.

Erlinghagen, F. (1991): On the wild bee fauna (Hymenoptera Apoidea) of field borders in the Eifel (Germany) in relation to the blossom visitation spectrum. (In German). Diplom thesis University of Hannover, Department of Biology, Entomology group.

Hasselrot, T.B. (1960): Studies on Swedish bumblebees (genus Bombus Latr.). Opuscula Entomol., Suppl. 17: 1.192.

Macior, L.W. (1968): Bombus (Hym. Apid.) queen foraging in relation to vernal pollination in Wisconsin. Ecology 49: 20-25.

Westrich, P. (1989a): Die Wildbienen Baden-Württembergs. Teil 1: Allgemeiner Teil. Ulmer Verlag.

Westrich, P. (1989b): Die Wildbienen Baden-Württembergs. Teil 2: Spezieller Teil. Ulmer Verlag.

Westrich, P. & Schmidt, K. (1986): Methoden und Anwendungsgebiete der Pollenanalyse bei Wildbienen (Hymenoptera Apoidea). Linzer Biol. Beitr. 18: 341-360.