Olfactory processing of sex and alarm cues in the crucian carp Carassius carassius
نویسنده
چکیده
.................................................................................................................................... 2 Introduction .............................................................................................................................. 4 The fish olfactory system ....................................................................................................... 4 The sensory neurons........................................................................................................... 4 Odorant receptors .............................................................................................................. 5 The secondary neurons....................................................................................................... 6 Other neurons in the fish olfactory bulb ............................................................................ 7 The functional organization of the olfactory organ................................................................ 8 Morphology – function relationship................................................................................... 8 Spatial specificity of secondary neurons............................................................................ 9 Higher brain centers ........................................................................................................ 10 The fright reaction................................................................................................................ 10 Neural pathways............................................................................................................... 11 Species specificity............................................................................................................. 12 The skin extract as odor stimuli ....................................................................................... 12 Hormones as pheromones – inducers of sexual behaviors................................................... 12 Sensitivity towards sex pheromones................................................................................. 13 Effect of sex hormones on non-reproductive physiology and behavior ........................... 14 Aim of thesis............................................................................................................................ 15 Methods ................................................................................................................................... 17 Experimental animals........................................................................................................... 17 Single unit recordings of odor-induced activity in the olfactory bulb ................................. 17 Neurotracing......................................................................................................................... 18 Behavioral studies ................................................................................................................ 18 Measurement of sex steroid hormones................................................................................. 19 Synopsis of results .................................................................................................................. 20 Paper I .................................................................................................................................. 20 Paper II ................................................................................................................................. 20 Paper III................................................................................................................................ 21 Paper IV................................................................................................................................ 21 Paper V................................................................................................................................. 22 Discussion................................................................................................................................ 23 Distinction between functionally related odorants............................................................... 23 Deciphering complex odors ................................................................................................. 24 The activation of olfactory bulb neurons ............................................................................. 25 Variations in the olfactory system........................................................................................ 27 Conclusion............................................................................................................................... 29 References ............................................................................................................................... 30 Papers I -V .............................................................................................................................. 41
منابع مشابه
Single unit responses to skin odorants from conspecifics and heterospecifics in the olfactory bulb of crucian carp Carassius carassius.
Injured fish skin leaks alarm substances that induce the fright reaction upon olfactory detection. The skin also contains a multitude of other odorants traditionally related to other behaviors, but to what extent they are detected upon injury is unknown. We have performed single unit recordings in the olfactory bulb (OB) of crucian carp while exposing the olfactory epithelium to skin extracts f...
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