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.

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

Inter-individual differences in the foraging behavior of breeding Adélie penguins are driven by individual quality and sex

2020 ◽  
Vol 636 ◽  
pp. 189-205
Author(s):  
A Lescroël ◽  
PO’B Lyver ◽  
D Jongsomjit ◽  
S Veloz ◽  
KM Dugger ◽  
...  
Keyword(s):  
Individual Differences ◽  
Foraging Behavior ◽  
Ross Sea ◽  
Individual Quality ◽  
High Quality ◽  
Breeding Experience ◽  
Age Related ◽  
Demographic Traits ◽  
Iteroparous Species ◽  
Adélie Penguins

Inter-individual differences in demographic traits of iteroparous species can arise through learning and maturation, as well as from permanent differences in individual ‘quality’ and sex-specific constraints. As the ability to acquire energy determines the resources an individual can allocate to reproduction and self-maintenance, foraging behavior is a key trait to study to better understand the mechanisms underlying these differences. So far, most seabird studies have focused on the effect of maturation and learning processes on foraging performance, while only a few have included measures of individual quality. Here, we investigated the effects of age, breeding experience, sex, and individual breeding quality on the foraging behavior and location of 83 known-age Adélie penguins at Cape Bird, Ross Sea, Antarctica. Over a 2 yr period, we showed that (1) high-quality birds dived deeper than lower quality ones, apparently catching a higher number of prey per dive and targeting different foraging locations; (2) females performed longer foraging trips and a higher number of dives compared to males; (3) there were no significant age-related differences in foraging behavior; and (4) breeding experience had a weak influence on foraging behavior. We suggest that high-quality individuals have higher physiological ability, enabling them to dive deeper and forage more effectively. Further inquiry should focus on determining the physiological differences among penguins of different quality.

Foraging Behavior of Black-Footed Albatross Phoebastria nigripes Rearing Chicks on the Ogasawara Islands

2019 ◽  
Vol 18 (1) ◽  
pp. 27 ◽  
Author(s):  
Kentaro Kazama ◽  
Tomoko Harada ◽  
Tomohiro Deguchi ◽  
Hajime Suzuki ◽  
Yutaka Watanuki
Keyword(s):  
Foraging Behavior ◽  
Ogasawara Islands
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