Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 15 of 15 for “"Phonotaxis"”.
-
Motor control and directional accuracy of phonotaxis in female field crickets
… is linked to descending motor control of phonotaxis. To analyze the auditory-induced motor responses, I recorded high-speed videos of crickets performing phonotaxis and tracked the movement of their bodies and appendages. The video analysis showed that when crickets commence phonotaxis, …
-
Behavioural and neural studies of male singing and female phonotaxis behaviour in crickets
… song. Furthermore, based on female cricket phonotaxis preference I developed an animal acoustic selecting system, in which the females have to navigate through a complex parkour to reach the acoustic stimulus presenting speaker. I tested the system with different selecting experiments and …
-
The effect of diet and parasite load on female phonotaxis in the Texas field cricket, Gryllus integer
… five diets varying in protein and fat content. Phonotaxis was quantified using a non-compensating Kugel treadmill which generates vector scores incorporating the speed and direction of movement of each female. Test females were presented with four calling song models which differed in pulse …
-
An analysis of phonotactic behaviour in the cricket Gryllus bimaculatus
… the first detailed lifetime study analysing phonotaxis in crickets. My results demonstrate that the optimal age to test phonotaxis in G. bimaculatus females is from day 7 to 24 after the final moult. I also found that selectiveness was persistent with age. These findings contradict the female …
-
Hormonal mechanisms for variation in female mate choice
… choice has been well studied. Acoustic based phonotaxis tests were used to assay mate choice behaviors such as receptivity, permissiveness and discrimination. These behaviors are respectively defined as a response to conspecific mate signals, a response to unattractive mate signals and the …
-
Sound Source Segregation in the Acoustic Parasitiod Fly Ormia ochracea
… I incorporate these response measures in a phonotaxis performance index that is sensitive to capturing response variation that may underlie song recognition. I demonstrate that Floridian O. ochracea exhibit phonotaxis to a combination of pulse durations and interpulse intervals that combine …
-
The Evolution of Mate Choice in Spadefoot Toads
… male aggregation behavior in spadefoot toads. In phonotaxis experiments, males associated with a stimulus simulating a conspecific calling male, when given a choice between conspecific and heterospecific calls. When males were presented with different conspecific calls, poor-condition males …
-
Polymorphic mating signals and female choice in an Amazonian frog
… chapter, I demonstrated that the males perform phonotaxis to choruses of similar call frequency. Along with the previous studies of female phonotaxis, the results suggest the pattern of discrimination of males and females are similarly based on the frequency of the call. Evolution of some …
-
The effects of stress hormones on preferences for acoustic signals in female green treefrogs (Hyla cinerea) and barking treefrogs (Hyla gratiosa)
… calls broadcast at high rates in dual speaker phonotaxis trials decreased as CORT dose and circulating CORT level increased. Neither CORT dose nor level was related to the latency of female phonotactic responses suggesting that elevated CORT does not increase the motivation to mate. Variation …
-
Effect of age on female choice in the field cricket, Gryllus interger
… treadmill, called the Kugel, to measure female phonotaxis. Artificially generated male calling songs of varying pulse rates were broadcast in either a singlestimulus or a three-stimulus experimental design. The pulse rates used in the calling song stimuli were 70, 64, 76, 55 and 85 pulses per …
-
Effects of Anthropogenic Light and Noise on Anuran Breeding Behavior
… Additionally, females were tested in two phonotaxis experiments to determine their mate choice preferences under dark and elevated light conditions. Effects of artificial light and anthropogenic noise varied among species. All species studied exhibited alterations in either call dominant …
-
Mate choice and reproductive success in the speckled bushcricket, Leptophyes punctatissima
… calls, the female replies and the male performs phonotaxis to the stationary female. Consequently mate choice could occur at either of two stages: first, during the interchange of calls and second, on the basis of proximate criteria once the male has approached. There is no evidence that females …
-
Host Attraction and Host Selection in the Family Corethrellidae (Wood And Borkent) (Diptera)
Flies in the family Corethrellidae (Diptera) are known to be attracted to the mating calls of tree frogs. Field studies using the calls of nine species of frogs native to the SE USA confirmed prior findings that the call of the barking tree frog, Hyla gratiosa LeConte, is the most attractive call …
-
Scale dependent processing of conspecific signals in the gray treefrog Hyla versicolor
Acoustic communication is both widespread and often essential for successful mate selection, territorial defense, and many social behaviors in many taxa. Laboratory studies often use ‘simplified’, artificial stimuli which have high signal-to-noise rations and are easy to manipulate, but often do …
-
Using new tools to study the neural mechanisms of sensation: Auditory processing in locusts and translational motion vision in flies
This thesis describes work from both the University of Cambridge in the lab of Berthold Hedwig and from the HHMI Janelia Research Campus in the lab of Michael Reiser. At the University of Cambridge, my work involved the development and demonstration of a method for electrophoretically delivering …