Behavioral and neuronal responses of two mouse species, Mus musculus and Mus spicilegus, to con- and heterospecific olfactory signals
The behavioral and neuronal responses of the males of two closely related species of mice (Mus musculus wagneri, M. spicilegus) to the urine odors of estrus con- and heterospecific females were studied. In two-choice odor tests males significantly longer investigated odor of conspecific females in...
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Siberian Branch of the Russian Academy of Sciences, Federal Research Center Institute of Cytology and Genetics, The Vavilov Society of Geneticists and Breeders
2017-12-01
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| Series: | Вавиловский журнал генетики и селекции |
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| Online Access: | https://vavilov.elpub.ru/jour/article/view/1226 |
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| author | E. V. Kotenkova A. V. Romashchenko A. N. Maltsev |
| author_facet | E. V. Kotenkova A. V. Romashchenko A. N. Maltsev |
| author_sort | E. V. Kotenkova |
| collection | DOAJ |
| description | The behavioral and neuronal responses of the males of two closely related species of mice (Mus musculus wagneri, M. spicilegus) to the urine odors of estrus con- and heterospecific females were studied. In two-choice odor tests males significantly longer investigated odor of conspecific females in comparison with heterospecific ones. To investigate neuronal activation in the main and accessory olfactory bulbs (MOB and AOB), one of the methods of functional tomography – manganese-enhanced MRI ( ME-MRI) – was used. There was a significant increase in Mn2+ accumulation in the dorsal section of the posterior part of the MOB in male M. m. wagneri and M. spicilegus exposed to odor of conspecific females compared with the control group males (odor not exposed). There was a local significant increase in manganese accumulation in the dorsal region of the anterior part of the MOB in the case of the exposure of odor of a heterospecific female. The exposure of heptanone-2 to mice resulted not only in an increase in Mn2+ accumulation in certain zones, but also in a significant decrease in the accumulation of Mn2+ in the rest of the olfactory bulbs. A significant increase in the accumulation of MRI contrast in AOB was observed in males only in the case of female urine-conspecific odor exposure. The results support the previously stated assumption of a significant difference in chemical communication systems in two species of mice. A comparison of these results and results obtained previously demonstrated the absence of any differences in behavioral and neuronal responses to con- and heterospecific odors of the house mouse subspecies allopatric (M. m. wagneri) and sympatric (M. m. musculus) to M. spicilegus. This fact does not allow us to assume the effect of the mechanism of “reinforcement” in the process of evolution in the formation of precopulatory reproductive isolation between the sympatric species M. spicilegus and M. musculus. |
| format | Article |
| id | doaj-art-e9a655f012e74dd59fd2697c112441ea |
| institution | Kabale University |
| issn | 2500-3259 |
| language | English |
| publishDate | 2017-12-01 |
| publisher | Siberian Branch of the Russian Academy of Sciences, Federal Research Center Institute of Cytology and Genetics, The Vavilov Society of Geneticists and Breeders |
| record_format | Article |
| series | Вавиловский журнал генетики и селекции |
| spelling | doaj-art-e9a655f012e74dd59fd2697c112441ea2025-02-01T09:58:05ZengSiberian Branch of the Russian Academy of Sciences, Federal Research Center Institute of Cytology and Genetics, The Vavilov Society of Geneticists and BreedersВавиловский журнал генетики и селекции2500-32592017-12-0121778879410.18699/VJ17.294684Behavioral and neuronal responses of two mouse species, Mus musculus and Mus spicilegus, to con- and heterospecific olfactory signalsE. V. Kotenkova0A. V. Romashchenko1A. N. Maltsev2Severtsov Institute of Ecology and Evolution RAS.Institute of Cytology and Genetics SB RAS; Institute of Computational Technologies SB RAS.Severtsov Institute of Ecology and Evolution RAS.The behavioral and neuronal responses of the males of two closely related species of mice (Mus musculus wagneri, M. spicilegus) to the urine odors of estrus con- and heterospecific females were studied. In two-choice odor tests males significantly longer investigated odor of conspecific females in comparison with heterospecific ones. To investigate neuronal activation in the main and accessory olfactory bulbs (MOB and AOB), one of the methods of functional tomography – manganese-enhanced MRI ( ME-MRI) – was used. There was a significant increase in Mn2+ accumulation in the dorsal section of the posterior part of the MOB in male M. m. wagneri and M. spicilegus exposed to odor of conspecific females compared with the control group males (odor not exposed). There was a local significant increase in manganese accumulation in the dorsal region of the anterior part of the MOB in the case of the exposure of odor of a heterospecific female. The exposure of heptanone-2 to mice resulted not only in an increase in Mn2+ accumulation in certain zones, but also in a significant decrease in the accumulation of Mn2+ in the rest of the olfactory bulbs. A significant increase in the accumulation of MRI contrast in AOB was observed in males only in the case of female urine-conspecific odor exposure. The results support the previously stated assumption of a significant difference in chemical communication systems in two species of mice. A comparison of these results and results obtained previously demonstrated the absence of any differences in behavioral and neuronal responses to con- and heterospecific odors of the house mouse subspecies allopatric (M. m. wagneri) and sympatric (M. m. musculus) to M. spicilegus. This fact does not allow us to assume the effect of the mechanism of “reinforcement” in the process of evolution in the formation of precopulatory reproductive isolation between the sympatric species M. spicilegus and M. musculus.https://vavilov.elpub.ru/jour/article/view/1226house micem. spicilegusm. musculusolfactory signalsmanganese-enhanced tomographyadditional olfactory systemmain olfactory system |
| spellingShingle | E. V. Kotenkova A. V. Romashchenko A. N. Maltsev Behavioral and neuronal responses of two mouse species, Mus musculus and Mus spicilegus, to con- and heterospecific olfactory signals Вавиловский журнал генетики и селекции house mice m. spicilegus m. musculus olfactory signals manganese-enhanced tomography additional olfactory system main olfactory system |
| title | Behavioral and neuronal responses of two mouse species, Mus musculus and Mus spicilegus, to con- and heterospecific olfactory signals |
| title_full | Behavioral and neuronal responses of two mouse species, Mus musculus and Mus spicilegus, to con- and heterospecific olfactory signals |
| title_fullStr | Behavioral and neuronal responses of two mouse species, Mus musculus and Mus spicilegus, to con- and heterospecific olfactory signals |
| title_full_unstemmed | Behavioral and neuronal responses of two mouse species, Mus musculus and Mus spicilegus, to con- and heterospecific olfactory signals |
| title_short | Behavioral and neuronal responses of two mouse species, Mus musculus and Mus spicilegus, to con- and heterospecific olfactory signals |
| title_sort | behavioral and neuronal responses of two mouse species mus musculus and mus spicilegus to con and heterospecific olfactory signals |
| topic | house mice m. spicilegus m. musculus olfactory signals manganese-enhanced tomography additional olfactory system main olfactory system |
| url | https://vavilov.elpub.ru/jour/article/view/1226 |
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