Download Sensory Physiology of Aquatic Lower Vertebrates. Satellite by T. Szabó, G. Czéh PDF

By T. Szabó, G. Czéh

Advances in Physiological Sciences, quantity 31: Sensory body structure of Aquatic decrease Vertebrates covers the lawsuits of the symposia of the twenty eighth foreign Congress of body structure. The e-book provides 17 papers that element boost findings within the sensory body structure of aquatic reduce vertebrates.
The insurance of the textual content comprises electroreceptors in Indian catfish teleosts; electroreceptive microampulla within the African mudfish Clarias lazera; and species specificity of electrical organ discharges in a sympatric workforce of gymnotoid fish from Manaus. The booklet additionally offers comparative reviews, resembling the intercourse alterations within the electrical organ discharge of Eigenmannia virescens and the impact of gonadal maturation; and behavioral experiences, equivalent to social habit in mormyrid fish.
The publication may be of serious curiosity to marine biologists, ethologists, and zoologists.

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Sensory Physiology of Aquatic Lower Vertebrates. Satellite Symposium of the 28th International Congress of Physiological Sciences, Keszthely, Hungary, 1980

Advances in Physiological Sciences, quantity 31: Sensory body structure of Aquatic reduce Vertebrates covers the lawsuits of the symposia of the twenty eighth overseas Congress of body structure. The booklet offers 17 papers that element develop findings within the sensory body structure of aquatic reduce vertebrates. The assurance of the textual content comprises electroreceptors in Indian catfish teleosts; electroreceptive microampulla within the African mudfish Clarias lazera; and species specificity of electrical organ discharges in a sympatric team of gymnotoid fish from Manaus.

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Sample text

Microelectrode experiments demonstrated that a change in salinity of sea water to the opening of ampullary canal caused a potential between the jelly and medium. The value of this potential depended on the change in sea water salinity level. 2 mV. The present results confirmed the previous suggestion (16) that the sensitivity of the ampullae of Lorenzini to small changes in sea water salinity is mediated through the electroreceptor mechanism.

Temperature was constantly measured with a thermistor. The junctional potential between the jelly and the medium was measured with a microelectrode inserted into the canal. The experiments on the effect of Ca , Mg + + , L-GLU and GDEE were performed on isolated ampullae of the mandibular group. The preparation was placed in a perfusion bath situated on a thermoelectric cooling plate. Thermal stimuli were made by changes in the temperature of the perfusion. 4. Magnesium-rich solution was obtained by substituting in normal solution NaCl by MgCl.

In EMG a single afferent terminal is shown often to make en passant synaptic contacts with a receptor cell, or with neighboring cells. So that, a large number of synaptic inputs can be assumed to converge onto a single myelinated afferent, potentiating their effects. 55 Experimental evidences appear to support the presence of integrative processes based on this large convergence. References Sugawara, Y. and Kanaseki, T. (1976) A combined physiological and electron microscope study of the electroreceptor of marine catfish, Plotosus anguillaris (Lacépède), with special reference to the mechanism of afferent transmissions.

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