Neural Response Patterns to Social Acoustic Signals and the Role of the Sexually Dimorphic Swim Bladder in the Plainfin Midshipman Fish, Porichthys Notatus PDF Download
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Author: Robert Alex Mohr Publisher: ISBN: Category : Languages : en Pages : 100
Book Description
The reception and processing of socially relevant auditory signals is crucial for the reproduction and survival of many species including the plainfin midshipman fish, Porichthys notatus. Numerous behavioral, physiological and neuroanatomical studies have made P. notatus a robust model system for studying vocal acoustic communication. The ways in which fish are able to perceive acoustic information varies across species and I will detail the underlying morphological structures, including the swim bladder, that fish have adapted to enhance underwater hearing. I characterize the morphology of the midshipman swim bladder chapter two, in each of the three sexual phenotypes; females, type I and type II males. Using micro-computerized tomography I measure and quantify the swim bladder’s shape and relative distance to the inner ear organs in each midshipman sexual phenotype. In chapter three, using the immediate early gene cFos as a marker for neuronal activation, I quantify the response properties of gravid female midshipman to both conspecific advertisement calls and heterospecific white seabass calls. Specifically, I demonstrate the brain areas differentially activated during the perception of these socially relevant acoustic signals. To assess the role of the swim bladder in the neural processing of acoustic signals, in chapter four I conducted playback of conspecific advertisement calls to reproductive females with their swim bladders experimentally removed. Finally, in chapter five, I summarize the conclusions of my work as well as the broader implications and suggestions for future studies.
Author: Robert Alex Mohr Publisher: ISBN: Category : Languages : en Pages : 100
Book Description
The reception and processing of socially relevant auditory signals is crucial for the reproduction and survival of many species including the plainfin midshipman fish, Porichthys notatus. Numerous behavioral, physiological and neuroanatomical studies have made P. notatus a robust model system for studying vocal acoustic communication. The ways in which fish are able to perceive acoustic information varies across species and I will detail the underlying morphological structures, including the swim bladder, that fish have adapted to enhance underwater hearing. I characterize the morphology of the midshipman swim bladder chapter two, in each of the three sexual phenotypes; females, type I and type II males. Using micro-computerized tomography I measure and quantify the swim bladder’s shape and relative distance to the inner ear organs in each midshipman sexual phenotype. In chapter three, using the immediate early gene cFos as a marker for neuronal activation, I quantify the response properties of gravid female midshipman to both conspecific advertisement calls and heterospecific white seabass calls. Specifically, I demonstrate the brain areas differentially activated during the perception of these socially relevant acoustic signals. To assess the role of the swim bladder in the neural processing of acoustic signals, in chapter four I conducted playback of conspecific advertisement calls to reproductive females with their swim bladders experimentally removed. Finally, in chapter five, I summarize the conclusions of my work as well as the broader implications and suggestions for future studies.
Author: Friedrich Ladich Publisher: Springer ISBN: 3709118468 Category : Science Languages : en Pages : 249
Book Description
This volume examines fish sounds that have a proven signal function, as well as sounds assumed to have evolved for communication purposes. It provides an overview of the mechanisms, evolution and neurobiology behind sound production in fishes, and discusses the role of fish sounds in behavior with a special focus on choice of mate, sex-specific and age-specific signaling. Furthermore, it highlights the ontogenetic development of sound communication and ecoacoustical conditions in fish habitats and the influence of hormones on vocal production and sound detection. Sound Communication in Fishes offers a must-have compendium for lecturers, researchers and students working in the fields of animal communication, fish biology, neurobiology and animal behavior.
Author: Rui F. Oliveira Publisher: Cambridge University Press ISBN: 1139469525 Category : Medical Languages : en Pages : 490
Book Description
The study of alternative reproductive tactics (the behavioural strategies used by individuals to increase their reproductive success) is an evolutionary puzzle, and one of great interest to researchers. For instance, why do some males guard both nest and eggs, while others sneak into nests while pairs are spawning and fertilise those eggs? The field offers a special opportunity to study the evolution and functional causes of phenotypic variation, which is a general problem in the field of evolutionary biology. By integrating both mechanistic (psychological) and evolutionary (behavioural ecology) perspectives and by covering a great diversity of species, Alternative Reproductive Tactics addresses this integrated topic of longstanding interest, bringing together a multitude of otherwise scattered information in an accessible form that is ideal for graduate students and researchers.
Author: Ni Ye Feng Publisher: ISBN: Category : Languages : en Pages : 199
Book Description
Vocalization is a prominent feature of social communication among vertebrates. For energetically costly vocal-acoustic courtship behaviors, timing across seconds, days, and seasons is critical and can enhance sender-receiver coupling, reproductive success, and reproductive isolation. Many species of fish produce sound to communicate in different social contexts, such as courtship. Here, I investigated hormonal, neuronal, and genetic mechanisms underlying the timing of vocal behavior in the plainfin midshipman fish (Porichthys notatus), across timescales spanning milliseconds to seasons. I demonstrated that the robust daily rhythm of midshipman male's nocturnal courtship vocalization is under endogenous, circadian control. Exogenous delivery of melatonin, the nocturnal hormone in vertebrates, rescued the inhibition of courtship vocalization under constant light, which abolishes endogenous melatonin production. Melatonin also rescued the inhibition of neural excitability in the midshipman vocal network under constant light. Furthermore, melatonin receptor 1b mRNA was shown to be expressed in neuroendocrine, sensory (including auditory) and vocal motor pathways. Together, these results support the hypothesis that melatonin plays a central role in timing the nocturnal midshipman courtship vocalization by acting on specific neural pathways. Finally, I used RNA-sequencing to characterize the transcriptome of the vocal motor nucleus (VMN), the final node of the hindbrain vocal pattern generator that directly determines vocalization temporal characteristics such as duration and frequency. I identified a suite of candidate genes, including ion channels, for shaping the precise and synchronous firing of VMN motor neurons. Many candidate genes showed day-night and seasonal changes in expression. Furthermore, enrichment and high expression of cellular respiration genes in VMN compared to the surrounding hindbrain tissue likely enable midshipman courtship calls that can last up to hours, and suggest that the neural patterning of vocal behavior is energetically costly. Finally, high expression of several antioxidant genes in VMN suggested a high capacity for combating cellular respiration-generated oxidative stress, which may also enable long duration courtship call production. Altogether, these chapters identify mechanisms underlying the timing of vocalization that may be applicable across other lineages of vertebrates, including birds and mammals, which exhibit rhythmic production of vocalization across multiple timescales.
Author: Andrew H. Bass Publisher: Springer ISBN: 3319265970 Category : Medical Languages : en Pages : 219
Book Description
This book reviews the growing literature that is consistent with the hypothesis that hormones can regulate auditory physiology and perception across a broad range of animal taxa, including humans. Understanding how hormones modulate auditory function has far reaching implications for advancing our knowledge in the basic biomedical sciences and in understanding the evolution of acoustic communication systems. A fundamental goal of neuroscience is to understand how hormones modulate neural circuits and behavior. For example, steroids such as estrogens and androgens are well-known regulators of vocal motor behaviors used during social acoustic communication. Recent studies have shown that these same hormones can also greatly influence the reception of social acoustic signals, leading to the more efficient exchange of acoustic information.
Author: Robert Alex Mohr
Author: Robert Alex Mohr
Author: Friedrich Ladich
Author: Jessica Ross McKibben
Author: Society for Neuroscience. Meeting
Author: William N. Tavolga
Author: Friedrich Ladich
Author: Rui F. Oliveira
Author: Ni Ye Feng
Author: Elena Choleris
Author: Andrew H. Bass