Affiliation: Gunma University
- Circadian rhythms of female mating activity governed by clock genes in DrosophilaT Sakai
Clock Cell Biology, National Institute of Advanced Industrial Science and Technology AIST, Institute of Molecular and Cell Biology IMCB, 1 1 Higashi, Tsukuba 305 8566, Japan
Proc Natl Acad Sci U S A 98:9221-5. 2001..melanogaster and its sibling species Drosophila simulans. Female- and species-specific circadian rhythms in the mating activity of Drosophila seem to cause reproductive isolation...
- Time, love and speciesT Sakai
Institute for Behavioral Sciences, Gunma University School of Medicine, 339 22, Maebashi, 371 8511, Japan
Neuro Endocrinol Lett 22:222-8. 2001..simulans. The Queensland fruit flies or wild gypsy moth also show species-specific mating rhythm, suggesting that species-specific circadian rhythms in mating activity of insect appear to cause a reproductive isolation...
- Light wavelength dependency of mating activity in the Drosophila melanogaster species subgroupTakaomi Sakai
Institute of Biological Sciences, University of Tsukuba, Tsukuba, Ibaraki 305 8572, Japan
Genes Genet Syst 77:187-95. 2002..Mating inhibition under UV was conserved in evolution among these species. Furthermore we clarified that D. melanogaster showed low mating activity under UV because males courted less under UV...
- Overexpression of a CREB repressor isoform enhances the female sexual receptivity in DrosophilaTakaomi Sakai
Institute for Behavioral Sciences, Gunma University School of Medicine, 3 39 22, Maebashi, 371 8511, Japan
Behav Genet 32:413-22. 2002..CREB might be involved in female sexual behavior of animals...
- Highly conserved Drosophila ananassae timeless gene functions as a clock component in Drosophila melanogasterIzumi Nishinokubi
Clock Cell Biology Group, Institute for Biological Resource and Functions, National Institute of Advanced Industrial Science and Technology, Central 6, 1 1 1 Higashi, Tsukuba 305 8566, Japan
Gene 307:183-90. 2003..At the molecular level, hs-tim introduced not only TIM but PER oscillation in transgenic flies. These results indicate that the tim gene in D. ananassae functions as a component of the circadian clock in D. melanogaster...
- Repetitive exposures to nicotine induce a hyper-responsiveness via the cAMP/PKA/CREB signal pathway in DrosophilaJiamei Hou
Institute for Behavioral Sciences, Gunma University School of Medicine, 3 39 22, Showa machi, Maebashi 371 8511, Japan
J Neurobiol 60:249-61. 2004..Induction of a dominant negative CREB transgene also blocked the enhancement, suggesting that CREB-mediated gene transcription is required for the hyper-responsiveness...
- Search for species-specific mating signal in courtship songs of sympatric sibling species, Drosophila ananassae and D. pallidosaHirokazu Yamada
Institute of Biological Sciences, University of Tsukuba, Tsukuba, Japan
Genes Genet Syst 77:97-106. 2002..We discussed the possibility that the specific frequency spectra of bursts are recognized by females as the species-specific signal rather than each parameter individually...
- A clock gene, period, plays a key role in long-term memory formation in DrosophilaTakaomi Sakai
Gunma University Graduate School of Medicine, 3 39 22 Showa machi, Maebashi 371 8511, Japan
Proc Natl Acad Sci U S A 101:16058-63. 2004..In contrast, mutations in other clock genes (timeless, dClock, and cycle) did not affect LTM formation. Thus, independent of the core oscillator of circadian clock, per plays a key role in LTM formation...
- [Recent development of research on long-term memory in Drosophila]Takaomi Sakai
The University of Iowa, Carver College of Medicine, Department of Anesthesia, 1 316 BSB, 51 Newton Road, Iowa City, IA 52242, USA
Seikagaku 78:38-41. 2006
- Differential roles of two major brain structures, mushroom bodies and central complex, for Drosophila male courtship behaviorTakaomi Sakai
Department of Anesthesia, University of Iowa Carver College of Medicine, Iowa City, 52242, USA
J Neurobiol 66:821-34. 2006....