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Park, Daesik;Propper, Catherine R.
- Animal cells and systems
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- v.6 no.3
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- pp.233-237
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- 2002
The pheromonal repelling response occurs when a combination of female and male pheromones is found to be less attractive to courting males than are female pheromones alone. This repelling response may act to conserve a courting males’reproductive fitness by minimizing ma1e-male competition within a courting group. Recently, a Pheromonal repelling response was first reported for vertebrates in the red-spotted newt, Notophthalmus viride-scens. A male cloacal pheromone, a ∼33 kDa protein, was identified as a repelling pheromone. In this study, to determine whether both the main olfactory epithelium (MOE) and/or the vomeronasal organ (VNO) are activated by the repelling pheromone, we recorded electrical field potentials from both olfactory epithelia while applying the repelling pheromone. The repelling pheromone induced electrical responses from both olfactory organs, and the magnitude of the response was greater in the VNO than in the MOE. Our results suggest that both the VNO and MOE may be involved in the pheromonal repelling response.
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김학훈
- Journal of the Korean Regional Science Association
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- v.9 no.2
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- pp.27-40
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- 1993
Most studies on regional economic impact have utilized employment or employment income data. Recently, a few scholars have noticed the importance of nonemployment income sources in urban economies. Using decennial census data on Arizona towns from 1970 to 1990, this paper first examines the increasing importance of nonempolyment income sources in urban economies and the associations of nonemployment income sources with elderly population and metropolitan location. Then, this paper investigates the impact of nonemployment income on urban growth in the framework of economic base model. The regression results show that the impact of nonemployment income is significant in the increase of nonbasic income and becomes greater over time, and that the impact of transfer over time, and that the impact of transfer income on nonbasic income of transfer income on nonbasic income is stronger in smaller towns and the impact of investment income is stronger in larger towns.
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