scholarly journals Effect of thiamethoxam on foraging activity and mortality of Apis mellifera (L.

2018 ◽  
Author(s):  
Gouri Shankar Giri ◽  
Babita Bhatt ◽  
Pramod Mall ◽  
Renu Pandey
Keyword(s):  
Apis Mellifera ◽  
Young Adult ◽  
Field Condition ◽  
Honey Bees ◽  
Negative Impact ◽  
Colony Development ◽  
Foraging Activity ◽  
Selective Toxicity ◽  
Beneficial Insects ◽  
Sublethal Doses

Thiamethoxam, a neonicotinoid commonly used for its high selective toxicity to insects, is one of the most commonly used pesticides. However, its effect on beneficial insects such as the honeybee Apis mellifera L is still controversial. As young adult workers perform out-hive duties that are crucial for colony development and survival, the effect of sublethal doses of thiamethoxam on honeybee foraging activity and mortality was assessed. Thiamethoxam had a negative impact on foraging activity and cause mortality of honey bees for a period of three to four days following the spraying in field condition.

scholarly journals Nutritional Effect of Alpha-Linolenic Acid on Honey Bee Colony Development (Apis Mellifera L.)

2015 ◽  
Vol 59 (2) ◽  
pp. 63-72 ◽  
Author(s):  
Lanting Ma ◽  
Ying Wang ◽  
Xiaobo Hang ◽  
Hongfang Wang ◽  
Weiren Yang ◽  
...  
Keyword(s):  
Apis Mellifera ◽  
Linolenic Acid ◽  
Honey Bee ◽  
Honey Bees ◽  
Basal Diet ◽  
The Other ◽  
Colony Development ◽  
Alpha Linolenic Acid ◽  
Bee Colony ◽  
Nutritional Effect

AbstractAlpha-linolenic acid (ALA), which is an n-3 polyunsaturated fatty acid (PUFA), influences honey bee feed intake and longevity. The objective of this study was to research the effect of six dietary ALA levels on the growth and development of Apis mellifera ligustica colonies. In the early spring, a total of 36 honey bee colonies of equal size and queen quality were randomly allocated into 6 groups. The six groups of honey bees were fed a basal diet with supplementation of ALA levels at 0 (group A), 2 (group B), 4 (group C), 6 (group D), 8 (group E), and 10% (group F). In this study, there were significant effects of pollen substitute ALA levels on the feeding amounts of the bee colony, colony population, sealed brood amount, and weight of newly emerged workers (P<0.05). The workers’ midgut Lipase (LPS) activity of group C was significantly lower than that of the other groups (P<0.01). The worker bees in groups B, C, and D had significantly longer lifespans than those in the other groups (P<0.05). However, when the diets had ALA concentrations of more than 6%, the mortality of the honey bees increased (P<0.01). These results indicate that ALA levels of 2 ~ 4% of the pollen substitute were optimal for maintaining the highest reproductive performance and the digestion and absorption of fatty acids in honey bees during the period of spring multiplication. Additionally, ALA levels of 2 ~ 6% of the pollen substitute, improved worker bee longevity.

scholarly journals The influence of sublethal doses of imidacloprid on protein content and proteolytic activity in honey bees (Apis mellifera L.)

2016 ◽  
Vol 55 (2) ◽  
pp. 212-220 ◽  
Author(s):  
Jerzy Wilde ◽  
Regina J Frączek ◽  
Maciej Siuda ◽  
Beata Bąk ◽  
Fani Hatjina ◽  
...  
Keyword(s):  
Apis Mellifera ◽  
Protein Content ◽  
Proteolytic Activity ◽  
Honey Bees ◽  
Sublethal Doses

scholarly journals The foraging behaviour of honey bees, Apis mellifera: a review

2014 ◽  
Vol 59 (No. 1) ◽  
pp. 1-10 ◽  
Author(s):  
HF Abou-Shaara
Keyword(s):  
Apis Mellifera ◽  
Honey Bee ◽  
Honey Bees ◽  
Foraging Behaviour ◽  
Foraging Activity ◽  
Monitoring Methods ◽  
Ambient Environment ◽  
Bee Colony ◽  
Foraging Preference ◽  
Honey Bee Colony

Foraging behaviour is one of the distinctive behaviours of honey bees, Apis mellifera. This behaviour is the link between the honey bee colony and the ambient environment. Therefore, various in-colony and out-colony factors have an impact on this behaviour, and many studies have been employed to investigate these factors. Foraging behaviour is not advantageous only for the colony and for plant pollination but also has other benefits. In contrast, some disadvantages have also been discovered to be linked with foraging activity. Practically speaking, the control over this behaviour is very important to maximize colony products as well as to increase other agricultural benefits. This paper presents a review on foraging activity including; the regulation of foraging tasks, factors impacting this behaviour, foraging preference, variations between subspecies, monitoring methods as well as the possible methods for controlling this behaviour. As concluded from this review, more work needs to be performed in order to elucidate certain aspects of foraging behaviour. &nbsp;

scholarly journals Fipronil promotes motor and behavioral changes in honey bees (Apis mellifera) and affects the development of colonies exposed to sublethal doses

2015 ◽  
Vol 34 (5) ◽  
pp. 1062-1069 ◽  
Author(s):  
Rodrigo Zaluski ◽  
Samir Moura Kadri ◽  
Diego Peres Alonso ◽  
Paulo Eduardo Martins Ribolla ◽  
Ricardo de Oliveira Orsi
Keyword(s):  
Apis Mellifera ◽  
Honey Bees ◽  
Behavioral Changes ◽  
Sublethal Doses

The diminished incidence of Acarapis woodi (Rennie) (Acari: Tarsonemidae) in honey bees, Apis mellifera L. (Hymenoptera: Apidae), in Britain

1982 ◽  
Vol 72 (4) ◽  
pp. 655-662 ◽  
Author(s):  
L. Bailey ◽  
J. N. Perry
Keyword(s):  
Apis Mellifera ◽  
Linear Dependence ◽  
Honey Bees ◽  
Current Knowledge ◽  
Foraging Activity ◽  
Acarapis Woodi ◽  
England And Wales

AbstractInvestigations showed that there is a highly significant linear dependence of the percentage of bee (Apis mellifera L.) colonies detectably infested with Acarapis woodi (Rennie) on the number of colonies in England and Wales. A decline of infestation since 1947 corresponds to a decrease recorded in the number of colonies. The simplest explanation, based on current knowledge, is that the decrease has allowed the foraging activity of the remaining colonies to increase, so lessening the contact between old infested bees and young susceptible individuals sufficiently to hinder the spread and multiplication of mites within colonies.

scholarly journals Effects of Some Insecticides on Foraging honeybees on Onion Flowers under Field Condition

2017 ◽  
pp. 13-17 ◽  
Author(s):  
Dawit Melisie ◽  
Tebkew Damte
Keyword(s):  
Apis Mellifera ◽  
Side Effects ◽  
Field Condition ◽  
Insect Pests ◽  
Insect Infestation ◽  
Cash Crop ◽  
Beneficial Insects ◽  
Major Threat ◽  
Controlling Mechanism ◽  
Lambda Cyhalothrin

In Ethiopia onion is an important condiment, vegetable and cash crop. Various insects attack the onion in fields, and is a major threat to onion cultivation. To overcome insect infestation problem, the use of different insecticides is a major controlling mechanism. However, the uses of these insecticides against insect pests have dangerous effects on beneficial insects like honeybees (Apis mellifera L.). In this investigation, we report insecticides effects on honeybees that forage on onion flower under field condition. Bombay red onion variety was used to assess the side-effects of profenofos 750 EC, lambda-cyhalothrin 5 EC, deltamethrin 2.5 EC, diazinon 60 EC, malathion 50 EC and endosulfan 35 EC at recommended rate on honeybees foraging on onion flowers. All the tested insecticides were found to be toxic to honeybees and caused mortality within 6 h after spraying. 

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