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Mostrando ítems 11-20 de 1950
Evolution and population structure of africanized honey bees in Brazil: Evidence from spatial analysis of morphometric data
(Soc Study Evolution, 1995-12-01)
In recent years, studies based on isoenzymatic patterns of geographic variation have revealed that what is usually called the Africanized honey bee does not constitute a single population. Instead, several local populations ...
Evolution and population structure of africanized honey bees in Brazil: Evidence from spatial analysis of morphometric data
(Soc Study Evolution, 1995-12-01)
In recent years, studies based on isoenzymatic patterns of geographic variation have revealed that what is usually called the Africanized honey bee does not constitute a single population. Instead, several local populations ...
Honey yield of different commercial apiaries treated with Lactobacillus salivarius A3iob, a new bee-probiotic strain
(Wageningen Academic, 2018-02-21)
The main objective of this study was to determine the impact of Lactobacillus salivarius A3iob, a honey bee gut-associated strain (GenBank code access KX198010), on honey yield. Independent assays were conducted from May ...
An oligonucleotide primer set for PCR amplification of the complete honey bee mitochondrial genome
(SPRINGER FRANCE, 2008)
Mitochondrial DNA markers have been widely used to address population and evolutionary questions in the honey bee Apis mellifera. Most of the polymorphic markers are restricted to few mitochondrial regions. Here we describe ...
Influence of land use on chlorpyrifos and persistent organic pollutant levels in honey bees, bee bread and honey: Beehive exposure assessment
(Elsevier, 2020-04)
This work reports the spatial and temporal variations on the dynamics of OCPs, PCBs, PBDEs and chlorpyrifos in honey bee, bee bread and honey samples, as well as soil and flowers from the surrounding areas, considering, ...
Weakness and collapse of bee colonies in Brazil: are there cases of CCD?
(Empresa Brasil Pesq Agropec, 2016-05-01)
In the last decades, the decline of wild bee populations and the collapse of Apis mellifera colonies have concerned researchers and beekeepers. The objective of this review was to compile some of the most relevant studies ...
Invasive bumble bees reduce nectar availability for honey bees by robbing raspberry flower buds
(Elsevier Gmbh, Urban & Fischer Verlag, 2017-03)
The introduction of exotic bees for crop pollination is an increasingly common practice worldwide. While beneficial for crop production, exotic species may become invasive with several deleterious ecological and economic ...