scholarly journals Does pea lectin expressed transgenically in oilseed rape (Brassica napus) influence honey bee (Apis mellifera) larvae?

2007 ◽  
Vol 6 (4) ◽  
pp. 271-278 ◽  
Author(s):  
Anna Lehrman
Keyword(s):  
Apis Mellifera ◽  
Brassica Napus ◽  
Honey Bee ◽  
Oilseed Rape ◽  
Pea Lectin

A preliminary investigation into honey bee (Apis mellifera) pollination of canola (Brassica napus cv. Karoo) in Western Australia

2000 ◽  
Vol 40 (3) ◽  
pp. 439 ◽  
Author(s):  
R. Manning ◽  
R. Manning ◽  
J. Boland ◽  
J. Boland
Keyword(s):  
Apis Mellifera ◽  
Brassica Napus ◽  
Linear Regression ◽  
Multiple Linear Regression ◽  
Honey Bee ◽  
Preliminary Investigation ◽  
Conservative Estimate ◽  
Branch Number ◽  
Explanatory Variables ◽  
Pod Yield

The aim of this preliminary experiment was to evaluate the effect of distance from the apiary on pod yield in canola. Beehives were used at a density of 1.28 hives/ha. The results showed that the number of pods/plant decreased as distance from the apiary increased, when plant height and branch number were used as explanatory variables. Multiple linear regression indicated a predicted pod loss of 15.3 pods/plant over a distance of 1000 m from an apiary. This was equivalent to a 16% loss based on an average of 59 plants/m2 and average pod production of 5666 pods/m2 from this experiment. For a 2 t/ha crop this would be equivalent to about 320 kg/ha. The results are only indicative because of the variation in the crop studied and lack of replication, but may, in fact, be a conservative estimate.

Foraging behaviour of honey bees (Apis mellifera L.) on transgenic oilseed rape (Brassica napus L.var. oleifera)

1995 ◽  
Vol 4 (4) ◽  
pp. 270-276 ◽  
Author(s):  
A. L. Picard-Nizou ◽  
M. H. Pham-Delègue ◽  
V. Kerguelen ◽  
P. Douault ◽  
R. Marilleau ◽  
...  
Keyword(s):  
Apis Mellifera ◽  
Brassica Napus ◽  
Oilseed Rape ◽  
Honey Bees ◽  
Foraging Behaviour ◽  
Transgenic Oilseed Rape

scholarly journals POLLEN GIVING PLANTS VISITED BY THE HONEY BEE (APIS MELLIFERA L.)

2019 ◽  
pp. 59-66
Author(s):  
Zheko Radev
Keyword(s):  
Apis Mellifera ◽  
Brassica Napus ◽  
Key Words ◽  
Honey Bee ◽  
Honey Bees ◽  
Centaurea Cyanus ◽  
Key Words Honey Bee ◽  
Pollen Traps ◽  
Bee Colonies ◽  
Floral Specialization

The analysis of the honey plants in the area of apiculture is very important about the development, reproduction and productivity of bee colonies. The knowledge of the floral specialization of Apis mellifera L. is main point for good beekeeping practices. The bees have visited 46 species of honey plants from 41 genera and 22 families. The honey bees prefer to collect pollen from 2 to 5-6 plant species during every single month. Bees mainly collect pollen from two or three plants every month. The agricultural species Brassica napus as well as the meadow flora – Сentaurea solstitialis and Centaurea cyanus are the most visited honey plants during their flowering. Bees prefer to collect pollen from 16 plants out of 46 visited taxons. Not all plants in the area serve as a source of pollen for the bees. The greatest amount of collected pollen comes from Brassica napus – 3798.69 g. The visited cultivated honey taxons are around 22 % but about 56.5 % of the total amount collected pollen. Around 78 % of the visited plants are common natural as well as about 43.5 % of the total amount collected pollen. Key words: honey bee, honey plants, pollen, pollen traps, melissopalynologia, specialization

scholarly journals Study on Chemical and Bioactive Components of Different Floral Sources’ Honey in Nepal

2019 ◽  
Vol 11 ◽  
pp. 51-59
Author(s):  
Samiksha Bhattarai ◽  
Ujjwol Subedi ◽  
Uttam Kumar Bhattarai ◽  
Roman Karki ◽  
Pravin Ojha
Keyword(s):  
Antioxidant Activity ◽  
Apis Mellifera ◽  
Brassica Napus ◽  
Chemical Composition ◽  
Honey Bee ◽  
Reducing Sugars ◽  
Fagopyrum Esculentum ◽  
Total Acidity ◽  
Bioactive Components ◽  
Flavonoid Content

Honey samples of commercial honey bee (Apis mellifera) were collected from different bee keepers in Nepal. Total 16 different samples from Dang, Chitwan, Nawalparasi, Sarlahi, Makwanpur and Rautahat districts of Nepal were obtained, representing honey of 4 different floral sources ‘Chiuri’ (Diploknema butyracea), ‘Rudhilo’ (Pogostemon plectranthoides), Mustard (Brassica napus), and Buckwheat (Fagopyrum esculentum). Chemical composition and bioactive components of the honey samples were studied.Moisture content, pH, total acidity of the examined honey samples was found to be in the range of 19.30 ± 0.87 to 20.15 ± 1.39 %, 3.35 ± 0.63 to 4.80 ± 0.15, 109.25 ± 2.06 to 191.25 ± 14.73 meq/kg, respectively. Antioxidant activity, polyphenol, and flavonoid content were found to be in the range of 51.51 ± 4.95 to 97.84 ± 3.75 %, 17.82 ± 1.61 to 59.34 ± 2.77 mg GAE/100g, 1.22 ± 0.65 to 3.86 ± 0.80 mg GAE/100g, respectively. TSS, reducing sugars and HMF content ranged from 77.5 ± 0.46 to 78.0 ± 0.91 oBx, 64.06 ± 1.99 to 70.76 ± 1.26%, and 49.5 ± 4.50 to 214 ± 39.20 mg/kg respectively.

scholarly journals Experimental evidence that honeybees depress wild insect densities in a flowering crop

2016 ◽  
Vol 283 (1843) ◽  
pp. 20161641 ◽  
Author(s):  
Sandra A. M. Lindström ◽  
Lina Herbertsson ◽  
Maj Rundlöf ◽  
Riccardo Bommarco ◽  
Henrik G. Smith
Keyword(s):  
Apis Mellifera ◽  
Brassica Napus ◽  
Experimental Evidence ◽  
Oilseed Rape ◽  
Solitary Bees ◽  
Spatial Displacement ◽  
Fitness Consequences ◽  
Crop Field ◽  
Surrounding Landscape ◽  
Flower Visiting

While addition of managed honeybees ( Apis mellifera ) improves pollination of many entomophilous crops, it is unknown if it simultaneously suppresses the densities of wild insects through competition. To investigate this, we added 624 honeybee hives to 23 fields of oilseed rape ( Brassica napus L.) over 2 years and made sure that the areas around 21 other fields were free from honeybee hives. We demonstrate that honeybee addition depresses the densities of wild insects (bumblebees, solitary bees, hoverflies, marchflies, other flies, and other flying and flower-visiting insects) even in a massive flower resource such as oilseed rape. The effect was independent of the complexity of the surrounding landscape, but increased with the size of the crop field, which suggests that the effect was caused by spatial displacement of wild insects. Our results have potential implications both for the pollination of crops (if displacement of wild pollinators offsets benefits achieved by adding honeybees) and for conservation of wild insects (if displacement results in negative fitness consequences).

Identification of Floral Volatiles Involved in Recognition of Oilseed Rape Flowers, Brassica napus by Honeybees, Apis mellifera

1997 ◽  
Vol 23 (7) ◽  
pp. 1715-1727 ◽  
Author(s):  
Margaret M. Blight ◽  
Martine Le Métayer ◽  
Minh-Hà Pham Delègue ◽  
John A. Pickett ◽  
Frédéric Marion-Poll ◽  
...  
Keyword(s):  
Apis Mellifera ◽  
Brassica Napus ◽  
Oilseed Rape ◽  
Floral Volatiles
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