Foraging Behavior of Competing Africanized Honeybees and Stingless Bees

Ecology ◽  
1980 ◽  
Vol 61 (4) ◽  
pp. 836-845 ◽  
Author(s):  
David W. Roubik
Keyword(s):  
Foraging Behavior ◽  
Stingless Bees ◽  
Africanized Honeybees

Foraging behavior of individual workers and foraging dynamics of colonies of three Sumatran stingless bees

1985 ◽  
Vol 27 (2) ◽  
pp. 373-392 ◽  
Author(s):  
Tamiji Inoue ◽  
Siti Salmah ◽  
Idrus Abbas ◽  
Erniwati Yusuf
Keyword(s):  
Foraging Behavior ◽  
Stingless Bees

scholarly journals Effects of combined fungicide in stingless bees Scaptotrigona bipunctata

2021 ◽  
Vol 10 (1) ◽  
pp. e53710112029
Author(s):  
Tamiris de Oliveira Diniz ◽  
Naiara Climas Pereira ◽  
Breno Gabriel da Silva ◽  
William Cristian da Silva Pizzaia ◽  
Fernanda Giovana Martins de Oliveira ◽  
...  
Keyword(s):  
Biological Control ◽  
Foraging Behavior ◽  
Chromatin Structure ◽  
Stingless Bees ◽  
Morphological Analysis ◽  
Insect Pests ◽  
Morphological Changes ◽  
Chromatin Condensation ◽  
Brain Cells ◽  
Internal Morphology

Locker is a fungicide used in different crops for biological control, affecting both insect pests and pollinators, such as bees. This study aimed to evaluate toxicity and establish the lethal concentration (LC50) of the fungicide Locker in stingless bees Scaptotrigona bipunctata, investigating changes in brain cells chromatin structure and in midgut morphology. This agrochemical is a combined fungicide that contains three active ingredients: benzimidazole, triazole and strobilurin. Adult forage bees were orally exposed to the following concentrations: 1.7 mg a.i./L; 2.55 mg a.i./L; 3.4 mg a.i./L and 4.25 mg a.i./L of fungicide, and submitted to histochemical and morphological analysis 24, 48 and 72 hours after ingestion. The analysis of S. bipunctata brain cells showed changes in chromatin condensation in all treatments. There were also several morphological changes in the midgut at all concentrations and exposure times. Thus, the fungicide Locker significantly affected bee survival, inducing changes in their internal morphology, which can lead to alterations in their activities, directly interfering in their foraging behavior and survival.

scholarly journals Foraging, spatial distribution and the effect of honeybees on soybean yield

2020 ◽  
pp. 1983-1990
Author(s):  
Afonso H. Jung ◽  
Clériosn R. Perini ◽  
Ivair Valmorbida ◽  
Alexandre Swarowsky ◽  
Letícia Puntel ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Foraging Behavior ◽  
Management Strategies ◽  
High Concentration ◽  
Soybean Field ◽  
European Origin ◽  
Soybean Yield ◽  
Sampling Points ◽  
Grain Crop ◽  
Africanized Honeybees

The soybean is the most cultivated grain crop in Brazil and there are many efforts to protect visitor pollinators, especially honeybees. The understanding of honeybee behavior on soybean fields is important to growers to apply integrated pest management strategies to avoid harm the pollinators. The European bee (Apis mellifera Linnaeus, 1758 (Hymenoptera: Apidae)) is a social bee, with European origin, whose the worker length is 12 mm to 13 mm with darker chest hairs. In this sense, foraging hours of Apis on soybean, its spatial distribution, the effect of pollination on soybean yield and the effect of insecticides on honeybee behavior were investigated. Two experiments were carried out. The first experiment was performed in a soybean field with 79 sampling points and four insecticide treatments to understand the spatial distribution of honeybees. In addition, foraging behavior of honeybees was evaluated hourly from 7:00am to 7:00pm randomly on 40 sampling points. The second experiment was carried out in cages with and without honeybees to quantify the effect of pollination on soybean yield under spray of chemical insecticides. Four hives with Africanized honeybees (A. mellifera) were set around the area. The hives had approximately six to eight brood frames and two to four food frames. Insecticides were sprayed as diferent treatments. The first experiment showed that honeybees prefer to forage on soybean flowers from 10:00am to 1:00pm and have random distribution. The use of A. mellifera as a pollinator did not increase the yield of soybean. Besides the particular manner of experiment’s conduction, the information of foraging behavior of honeybees, the pollination effect on soybeans yield and the effect of insecticides on honeybees are prudently discussed and some implication for soybean producers are also carefully addressed to avoid insecticide applications to harm pollinators. It is important to understand that the effect of pollination on yield of soybean depends on environmental conditions, cultivars, the effect of caging plants, and the abnormally high concentration of bees in the cages

Foraging behavior of an estuarine predator, the blue crab Callinectes sapidus in a patchy environment

Ecography ◽  
2000 ◽  
Vol 23 (1) ◽  
pp. 21-31 ◽  
Author(s):  
Mary E. Clark ◽  
Thomas G. Wolcott ◽  
Donna L. Wolcott ◽  
Anson H. Hines
Keyword(s):  
Foraging Behavior ◽  
Blue Crab ◽  
Callinectes Sapidus ◽  
Patchy Environment

Human foraging behavior in external and internal search tasks

2010 ◽  
Author(s):  
Andreas Wilke ◽  
Benjamin Scheibehenne ◽  
Rui Mata ◽  
Peter M. Todd ◽  
H. Clark Barrett
Keyword(s):  
Foraging Behavior ◽  
Search Tasks ◽  
Human Foraging
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