The Diet and Foraging Behavior of the Larval Dragonfly Anax Junius (Aeshnidae), with an Assessment of the Role of Refuges and Prey Activity

Oikos ◽  
1984 ◽  
Vol 42 (1) ◽  
pp. 105 ◽  
Author(s):  
Todd C. Folsom ◽  
Nicholas C. Collins
Keyword(s):  
Foraging Behavior ◽  
Anax Junius

scholarly journals Do plant volatiles confuse rather than guide foraging behavior of the aphid hyperparasitoid Dendrocerus aphidum?

Chemoecology ◽  
2020 ◽  
Vol 30 (6) ◽  
pp. 315-325
Author(s):  
Jetske G. de Boer ◽  
Petra J. Hollander ◽  
Daan Heinen ◽  
Divya Jagger ◽  
Pim van Sliedregt ◽  
...  
Keyword(s):  
Foraging Behavior ◽  
Plant Volatiles ◽  
Sweet Pepper ◽  
Trophic Levels ◽  
Plant Host ◽  
Olfactory Responses ◽  
Clean Air ◽  
Series Of Experiments ◽  
Pepper Plants

Abstract Many species of parasitoid wasps use plant volatiles to locate their herbivorous hosts. These volatiles are reliable indicators of host presence when their emission in plants is induced by herbivory. Hyperparasitoids may also use information from lower trophic levels to locate their parasitoid hosts but little is known about the role of volatiles from the plant–host complex in the foraging behavior of hyperparasitoids. Here, we studied how Dendrocerus aphidum (Megaspilidae) responds to plant and host volatiles in a series of experiments. This hyperparasitoid uses aphid mummies as its host and hampers biological control of aphids by parasitoids in greenhouse horticulture. We found that D. aphidum females were strongly attracted to volatiles from mummy-infested sweet pepper plants, but only when clean air was offered as an alternative odor source in the Y-tube olfactometer. Hyperparasitoid females did not have a preference for mummy-infested plants when volatiles from aphid-infested or healthy pepper plants were presented as an alternative. These olfactory responses of D. aphidum were mostly independent of prior experience. Volatiles from the host itself were also highly attractive to D. aphidum, but again hyperparasitoid females only had a preference in the absence of plant volatiles. Our findings suggest that plant volatiles may confuse, rather than guide the foraging behavior of D. aphidum. Mummy hyperparasitoids, such as D. aphidum, can use a wide variety of mummies and are thus extreme generalists at the lower trophic levels, which may explain the limited role of (induced) plant volatiles in their host searching behavior.

scholarly journals Assessing the role of β-ocimene in regulating foraging behavior of the honey bee, Apis mellifera

Apidologie ◽  
2015 ◽  
Vol 47 (1) ◽  
pp. 135-144 ◽  
Author(s):  
Rong Ma ◽  
Ulrich G. Mueller ◽  
Juliana Rangel
Keyword(s):  
Apis Mellifera ◽  
Honey Bee ◽  
Foraging Behavior

The role of root architecture in foraging behavior of entomopathogenic nematodes

2014 ◽  
Vol 122 ◽  
pp. 32-39 ◽  
Author(s):  
Lanila Demarta ◽  
Bruce E. Hibbard ◽  
Martin O. Bohn ◽  
Ivan Hiltpold
Keyword(s):  
Foraging Behavior ◽  
Root Architecture ◽  
Entomopathogenic Nematodes

Implications of Foraging Behavior

Ecology ◽  
2013 ◽  
Author(s):  
Ronald C. Ydenberg
Keyword(s):  
Community Structure ◽  
Foraging Behavior ◽  
Behavioral Ecology ◽  
Mate Selection ◽  
Life Histories ◽  
Trade Off ◽  
Predator Prey ◽  
Flexible Behavior ◽  
The 1960S

The scientific study of ecology began in the 20th century with ideas about population dynamics and trophic interactions in food webs. The study of animal behavior developed around mid-century. Borrowing ideas from the rapidly expanding field of economics, the notion that one could think of foragers as clever strategists with flexible behavior came along in the 1960s. In subsequent decades “optimal foraging” grew rapidly. Analogous lines of thinking for other behaviors such as mate selection, parental care, life histories, and social interactions merged to form behavioral ecology in the 1970s and 1980s. Foraging theorists originally aimed to apply their thinking to population and community ecology. Facing criticism from ecologists, many instead developed strong links with ethology, experimental psychology, and neurobiology. But in the last two decades a series of discoveries have helped move the study of foraging toward fulfilling its ambitions of explaining “higher order” ecological phenomena such as predator-prey relationships and community structure. These discoveries are the subject of this bibliography. The most basic insight came from another notion borrowed from economics: that of a trade-off. Given a trade-off, a behavior can do one of two things well, or both moderately well, but cannot maximize both things at once. For example, an animal can forage quickly, but it cannot watch for predators, mates, or competitors at the same time. The trade-off between foraging and predation risk became fundamental. As the 21st century arrived, ecologists began to realize that anti-predator behavior has effects on populations and communities at least as big and as important as those attributable to the prey killed by predators. These discoveries are currently spurring ecologists to develop new theoretical and empirical techniques to investigate the role of foraging behavior in population ecology and community structure.

Role of olfaction in the foraging behavior and trial-and-error learning in short-nosed fruit bat, Cynopterus sphinx

2014 ◽  
Vol 103 ◽  
pp. 23-27 ◽  
Author(s):  
Wei Zhang ◽  
Guangjian Zhu ◽  
Liangjing Tan ◽  
Jian Yang ◽  
Yi Chen ◽  
...  
Keyword(s):  
Foraging Behavior ◽  
Trial And Error ◽  
Fruit Bat ◽  
Cynopterus Sphinx ◽  
Error Learning

The Role of Floral Density in Determining Bee Foraging Behavior: A Natural Experiment

2016 ◽  
Vol 36 (4) ◽  
pp. 392-399 ◽  
Author(s):  
Bethanne Bruninga-Socolar ◽  
Elizabeth E. Crone ◽  
Rachael Winfree
Keyword(s):  
Foraging Behavior ◽  
Natural Experiment ◽  
Floral Density ◽  
Bee Foraging
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