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Experimental Analysis Of Fish Sensory Systems: From Behavioural Responses To Physiological Extremes, Roselia Ayala-Osorio
Experimental Analysis Of Fish Sensory Systems: From Behavioural Responses To Physiological Extremes, Roselia Ayala-Osorio
Electronic Theses and Dissertations
Fishes are surrounded by various types of stimuli in their habitats which provide important information about their environments. Here, I investigated how various types of stimuli can affect the behaviour and physiology of two freshwater species: the invasive round goby (Neogobius melanostomus) and the black bullhead (Ameiurus melas). In chapter 2, I tested for a synergistic response in the round goby to multimodal stimuli, by presenting acoustic, visual, and olfactory stimuli separately and simultaneously. The results showed a significant decrease in the average respiration rate during multimodal stimuli suggesting that a synergistic response to multimodal stimuli …
Studies Of Chemosensory Responses In The Pharynx Of The Sea Lamprey (Petromyzon Marinus), Hasan Huseyin Polat
Studies Of Chemosensory Responses In The Pharynx Of The Sea Lamprey (Petromyzon Marinus), Hasan Huseyin Polat
Electronic Theses and Dissertations
The sea lamprey is a basal vertebrate, and the oldest extant species with taste buds. The objective of this thesis was to study the chemosensory responses from the sea lamprey’s pharynx, which is located caudal to oral cavity and medial to seven lateral brachiopores. The pharynx contains taste buds that detect and respond to tastants to inform lampreys about gustatory factors in the environment. The location of these taste buds along the lateral surface of the pharynx was first determined using scanning electron microscopy. Then using electrophysiology, our recordings from these pharyngeal regions containing taste buds picked up responses from …
Diversification In The Neotropics – Evolution And Population Genetics Of The Armored Catfish Hypancistrus Sp. From The Xingu River, Marcella Goncalves Santos
Diversification In The Neotropics – Evolution And Population Genetics Of The Armored Catfish Hypancistrus Sp. From The Xingu River, Marcella Goncalves Santos
Electronic Theses and Dissertations
The Xingu River, one of the largest tributaries of the Amazon River, is currently in peril due to the recent construction of hydroelectric dams, but little is known about the numerous fish species it supports. This dissertation focuses on three pleco catfish species belonging to the genus Hypancistrus from the Xingu River with partially overlapping distributions: H. zebra, H. sp. (L174), and H. sp. (L66/333). Chapter 1 is a bibliographic review of Amazonian freshwater fish diversity, with the goal of discussing the hypotheses of speciation mechanisms that can be tested in this system, including the relative importance of ecological adaptation …
The Fresh-Water Fishes Of Maine, Flavia Lucile Richardson
The Fresh-Water Fishes Of Maine, Flavia Lucile Richardson
Electronic Theses and Dissertations
The purpose of this investigation is to determine the present status of the fish fauna of Maine. Data assembled during the course of this study includes descriptions of native and introduced species, records concerning their present distribution, and the extent of the official introduction of non-indigenous species. From this material may be derived conclusions respecting the survival of the introduced species and the probable capacity of the native species to successfully compete with them. Through the use of descriptive material assembled during the investigation of species it has been possible to construct a key as an aid in identifying any …