Riparian ecosystem along rivers and streams are characterised by lateral and longitudinal ecological gradients and, as a result, harbour unique biodiversity. Riparian ecosystems in the fynbos of the Western Cape, South Africa, are characterised by seasonal dynamics, with summer droughts followed by high flows during winter. The unique hydrology and geomorphology of riparian ecosystems play an i...

Eight types of Sudanese honey produced by Apis mellifera collected from Tabga region, River Nile State (North Central Sudan) different floral sources, namely, Faseolus vulgaris " Fasoulia" , Balanites aegyptiaca" Hejleeg" Acacia seyal var. seyal" Taleh Ahmr" Faidherbia albida" Haraz" Lawsonia inermis" Henna" Tamarix nilotica" Tarfa" fistula" Taheh Abiyad" and tortilis" Samur" were assayed for a...

Pollination services of pumpkin, Cucurbita pepo L., provided by the European honey bee, Apis mellifera L., were compared with two native bee species, the common eastern bumble bee, Bombus impatiens (Cresson), and Peponapis pruinosa Say, in New York from 2008 to 2010. Performance of each species was determined by comparing single-visit pollen deposition, percentage of visits that contacted the s...

The ectoparasitic mite Varroa destructor is a major global threat to the Western honeybee Apis mellifera. This mite was originally a parasite of A. cerana in Asia but managed to spill over into colonies of A. mellifera which had been introduced to this continent for honey production. To date, only two almost clonal types of V. destructor from Korea and Japan have been detected in A. mellifera c...

Identification of mechanisms that allow some species to outcompete others is a fundamental goal in ecology and invasive species management. One useful approach is to examine congeners varying in invasiveness in a comparative framework across native and invaded ranges. Acacia species have been widely introduced outside their native range of Australia, and a subset of these species have become in...

Acacia nilotica once regarded as one of the worst weeds because of its invasiveness, potential for spread, economic and environmental impacts, thus it can easily grow and spread on large massive area for its survival. But recent studies and experiments shows that Acacia nilotica has many effective and efficient phytochemical activities in curing human diseases. Previous studies revealed that th...

Ann. Entomol. Soc. Am. 83(1): 81-88 (1990) ABSTRACT Restriction endonuclease cleavage maps of mitochondrial DNAs of Scandinavian Apis mellifera mellifera L., of German, Austrian, and Yugoslavian A. m. carnica Pollman, and of Austrian "Nigra" honey bees are compared with previously published maps of mitochondrial DNA from North American bees of European ancestry and Brazilian Africanized bees. A...

In the European honey bee, Apis mellifera, pollen foragers have a higher sucrose responsiveness than nectar foragers when tested using a proboscis extension response (PER) assay. In addition, Africanized honey bees have a higher sucrose responsiveness than European honey bees. Based on the biology of the Eastern honey bee, A. cerana, we hypothesized that A. cerana should also have a higher resp...

The recent, unexpected discovery of a functional DNA methylation system in the genome of the social bee Apis mellifera underscores the potential importance of DNA methylation in invertebrates. The extent of genomic DNA methylation and its role in A. mellifera remain unknown, however. Here we show that genes in A. mellifera can be divided into 2 distinct classes, one with low-CpG dinucleotide co...

Acacia senegal L. (Fabaceae) seeds are essential ingredient of "Pachkutta," a specific Rajasthani traditional food. The present study explored antiatherosclerotic and cardioprotective potential of Acacia senegal seed extract, if any, in hypercholesterolemic diet-induced atherosclerosis in rabbits. Atherosclerosis in rabbits was induced by feeding normal diet supplemented with oral administratio...