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- Signal evolution (2)
- <i>Schizocosa stridulans</i> (1)
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- Spider (1)
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Articles 1 - 6 of 6
Full-Text Articles in Life Sciences
The Role Of Visual Ornamentation In Female Choice Of A Multimodal Male Courtship Display, Eileen Hebets, K. Cuasay, P. K. Rivlin
The Role Of Visual Ornamentation In Female Choice Of A Multimodal Male Courtship Display, Eileen Hebets, K. Cuasay, P. K. Rivlin
Eileen Hebets Publications
The courtship behavior of male Schizocosa uetzi wolf spiders incorporates both visual and seismic signals into a multimodal display. These two signals have been shown to interact in such a manner that the seismic signal alters a female’s response to the visual signal, leading to a putative increased importance of visual signaling in the presence of a seismic signal. Experiments leading to this attention-focusing hypothesis relied in part on the video playback technique, eliciting the question of its significance under more biologically relevant conditions. Here, we directly examine female mate choice of males with differing visual signals (foreleg pigmentation) both …
Female Preference For Complex/Novel Signals In A Spider, Damian O. Elias, Eileen Hebets, Ronald R. Hoy
Female Preference For Complex/Novel Signals In A Spider, Damian O. Elias, Eileen Hebets, Ronald R. Hoy
Eileen Hebets Publications
Identifying the various factors that influence complex signal evolution is a difficult task, yet it is fundamental to understanding the evolution of animal communication. Here we explore the evolution of complex courtship signaling by taking advantage of a system in which sexual selection on male courtship traits has driven the diversification of geographically isolated populations of the jumping spider Habronattus pugillis Griswold. Using 2 populations (Santa Rita [SR] and Atascosa [AT]) in which SR females show xenophilic mating preferences for foreign (AT) over local males (SR), we examine the mechanisms driving this preference. Both AT and SR males produce multimodal …
Seismic Signal Production In A Wolf Spider: Parallel Versus Serial Multi-Component Signals, Damian O. Elias, Norman Lee, Eileen Hebets, Andrew Mason
Seismic Signal Production In A Wolf Spider: Parallel Versus Serial Multi-Component Signals, Damian O. Elias, Norman Lee, Eileen Hebets, Andrew Mason
Eileen Hebets Publications
Animal signals can consist of multiple parts within or across sensory modalities (multi-component signals or multimodal signals). While recent work has focused on multimodal signals, the production, processing and evolution of multi-component signals has received considerably less attention. Here, using synchronous high-speed video and laser vibrometer recordings followed by experimental manipulations of putative sound-producing structures, we explored the mechanisms of seismic signal production in the courtship display of Schizocosa stridulans Stratton. Two types of seismic courtship signals were observed: ‘rev’ and ‘idle’ signals. Revs consist of a high-frequency component produced by flexions of the male pedipalp (stridulation) simultaneous with a …
An Examination Of Agonistic Interactions In The Whip Spider Phrynus Marginemaculatus (Arachnida, Amblypygi), Kasey D. Fowler-Finn, Eileen Hebets
An Examination Of Agonistic Interactions In The Whip Spider Phrynus Marginemaculatus (Arachnida, Amblypygi), Kasey D. Fowler-Finn, Eileen Hebets
Eileen Hebets Publications
Intraspecific interactions in adult whip spiders (Phrynus marginemaculatus) were investigated in a laboratory setting to quantify agonistic interactions and to determine predictors of contest outcome. Males were initially paired with size-symmetric or size-asymmetric opponents to assess the effect of size symmetry on contests. Three weeks later, the same males were paired with either the same opponent, or a different opponent to determine whether or not individuals remember earlier encounters. Finally, we quantified aspects of female-female contests. Agonistic encounters between males are characterized by varying degrees of pedipalpal opening, elevation displays, and rapid flicking (~ 29 Hz) of the …
Anatomy And Physiology Of Giant Neurons In The Antenniform Leg Of The Amblypygid Phrynus Marginemaculatus, A. J. Spence, Eileen Hebets
Anatomy And Physiology Of Giant Neurons In The Antenniform Leg Of The Amblypygid Phrynus Marginemaculatus, A. J. Spence, Eileen Hebets
Eileen Hebets Publications
Amblypygids have modified front legs that are not used for locomotion, but rather to probe the environment in the manner of antennae. These elongate, motile sense organs are referred to as antenniform legs. We have found remarkable replication in structure and function of giant neurons in the antenniform leg of the amblypygid Phrynus marginemaculatus C. L. Koch 1841 when compared with other amblypygids. These neurons have such large diameter axons (several μm) that their action potentials can be recorded outside the cuticle. Their cell bodies are found in the periphery, in the distal-most segments of the antenniform leg, centimeters away …
Regional Seismic Song Differences In Sky Island Populations Of The Jumping Spider Habronattus Pugillis Griswold (Araneae, Salticidae), Damian O. Elias, Eileen Hebets, Ronald R. Hoy, Wayne P. Maddison, Andrew C. Mason
Regional Seismic Song Differences In Sky Island Populations Of The Jumping Spider Habronattus Pugillis Griswold (Araneae, Salticidae), Damian O. Elias, Eileen Hebets, Ronald R. Hoy, Wayne P. Maddison, Andrew C. Mason
Eileen Hebets Publications
Jumping spiders have long been used as model organisms to study visual communication. However, recent studies documenting the presence of intricate multicomponent seismic songs during courtship displays suggest an important role of seismic communication as well. Given the relatively recent focus on seismic communication, the extent to which seismic songs vary among jumping spider species or even among populations remains poorly understood. Here, we use the extensively studied Habronattus pugillis Griswold 1987 complex to explore putative seismic song diversity among males from isolated populations. H. pugillis populations have been studied extensively because of the tremendous diversification of male visual secondary …