Takashi Haramura

Takashi with lizard

Position: Post-Doc 2011-2012

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Location: Kyoto University, Department of Zoology

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Previous Research

As a PhD student in Japan, I studied oviposition site selection of a rhacophorid frog on Okinawa Island. The Ryukyu Kajika frog (Buergeria japonica) is a unique amphibian as they live and breed in coastal environments. Salinity is a significant environmental stressor for amphibians due to their poor osmoregulatory abilities, and amphibian eggs especially, do not survive in high salinity. How then, does this frog breed successfully in coastal areas? From my research I found that females assess habitat quality prior to oviposition, and can distinguish the difference in salinity levels of waterbodies. In an area of mostly high-salinity waterbodies, female Buergeria japonica select low-salinity waterbodies for their eggs. This type of maternal oviposition behaviour is important for reducing egg mortality and maintaining frog species distributions in coastal areas.

field site

Australian Research

Cane toads (Rhinella marina) are causing major ecological disruption to Australian ecosystems. Therefore, we must devise novel ways to control the cane toad. As a post-doc in the Shine Lab, I am studying oviposition site selection of cane toads at Fogg Dam in the Northern Territory.

In general, female frogs can identify the chemical cues of a waterbody that make it a suitable oviposition site (my previous research on Japanese frogs found that females could select oviposition sites in this way). I think female cane toads also may use chemical cues for selecting oviposition sites. Because a cane toad female can deposit more than 20,000 eggs in a single clutch, controlling the oviposition behaviour of female toads might provide new and powerful opportunities for cane toad control. So currently, I am conducting field and laboratory experiments and enjoying the beautiful nature of Fogg Dam.


Publications

# Publication
1. Haramura, T. (2004). Salinity and other abiotic characteristics of oviposition sites of the Rhacophorid frog, Buergeria japonica, in coastal habitat. Current Herpetology 23(2):81-84.
2. Haramura, T. (2005). Buergeria japonica (Ryukyu Kajika Frog). Oviposition behavior. Herpetological Review 36(4):429-430.
3. Toda, M., Yamaoto, R. and Haramura, T. (2006). The first record of the Ryukyu-legged skink, Ateuchosaurus pellopleurus, from Kojima island of the Tokara Group, Japan. Akamata 17(1):13-14. (only in Japanese)
4. Haramura, T. (2006). Social system of feral cats (Felis catus) inhabiting a small area with many feeding sites. Memoirs of the Faculty of Science Kyoto University (Series of Biology) 18(1):87-91.
5. Haramura, T. (2007). Microhabitat selection by tadpoles of Buergeria japonica inhabiting the coastal area. Journal of Ethology 25(1):3-7.
6. Haramura, T. (2007). Movement pattern of breeding individuals of Buergeria japonica found near the sea coast. Akamata 18(1):3-6. (only in Japanese)
7. Haramura, T. (2007). Salinity tolerance of eggs of Buergeria japonica (Amphibia, Anura) inhabiting coastal area. Zoological Science 24(8):820-823.
8. Haramura, T. (2008). Experimental test of spawning site selection by Buergeria japonica (Anura: Rhacophoridae) in response to salinity level. Copeia 2008(1):64-67.
9. Haramura, T., Yamane, M. and Mori, A. (2008). Preliminary survey on a turtle community in a lotic environment in the Kizu River. Current Herpetology 27(2):101-108.
10. Haramura, T., Yamane, M. and Mori, A. (2010). Radiotelemetric study on movement pattern of freshwater turtles inhabiting river environment during breeding and hibernation seasons. Journal of Freshwater Ecology 25(2):251-259.
11. Imahuku, M. and Haramura, T. (2011). Activity rhythm of Drosophila kept in complete darkness for 1300 generations. Zoological Science 28(3):195-198.
12. Haramura, T., Tabata, R. and Takarada, K. (2011). Observation of air breathing behavior in tadpoles – transition from branchial respiration to pulmonary respiration. Japanese Journal of Biological Education 51(3):25-31. (only in Japanese).
13. Haramura, T. (2011). Oviposition site use by a Rhacophorid frog inhabiting a coastal area. Journal of Herpetology 45:432-437.
14. Crossland, M. R., T. Haramura, A. A. Salim, R. J. Capon and R. Shine.  2012.  Exploiting intraspecific competitive mechanisms to control invasive cane toads (Rhinella marina). Proceedings of the Royal Society B 279:3436-3442.

Education

Year Qualification
2000 B. Sc. Faculty of Science, University of Ryukyus
2003 M. A. Department of Zoology, Graduate School of Science, Kyoto University
2006 Ph. D. Department of Zoology, Graduate School of Science, Kyoto University
Thesis: Oviposition site selection of a frog (Buergeria japonica) inhabiting the maritime area

Employment and Research History

Year Details
2006-2007 Post-Doctoral Researcher, 21st Century COE program: Graduate School of Science, Kyoto University
2007-2008 Post-Doctoral Researcher, 21st Century G-COE program: Graduate School of Science, Kyoto University
2008-2011 Research Fellow, Graduate School of Science, Kyoto University
2011-2012 JSPS Post-Doctoral Fellow for Research Abroad
2013- Assistant Professor, Kyoto University