Junho (June) Eom

Ph.D. student

In order to understand the role of fish gill ventilation in ammonia excretion, in my Ph. D. study, ventilation and plasma ammonia levels will be manipulated experimentally by several different approaches in order to increase or decrease gill water flow while simultaneously measuring ammonia excretion, both before (control) and after ammonia-loading (treatment). Recently I have collected some preliminary data indicating that the hypothesis is correct, at least in rainbow trout. The first goal of my Ph.D. will be to conduct further experiments to confirm the hypothesis in trout. A second goal will be to understand at the whole animal level how ammonia signals are integrated with the O2 and CO2 signals which also control ventilation, especially under natural circumstances (e.g. post-feeding, post-exercise) where all the signals may change. A third goal will be to use neurophysiological and molecular approaches to examine the mechanisms by which ammonia might be sensed in the NECs and in the brain, the relative importance of these two receptor sites, and interactions with the O2 and CO2 pathways. A final goal will be to broaden the study to other fish, such as air-breathing lungfish, primitive lamprey and hagfish, and urea producing elasmobranch (which produce mainly urea rather than ammonia) to try to understand the phylogeny of ventilatory ammonia sensitivity.

Korea Ocean Research & Development Institute (KORDI) travel award

2012
/
For Other

$3,000 USD

Faculty of Science Graduate Award

2012
/
For Research

$1,480.24

International Partial Tuition Scholarship

2012
/
For Research

$1.066.66 CAD

Faculty of Science Graduate Award

2011
/
For Research

$2,860.58 CAD

International Partial Tuition Scholarship

2011
/
For Research

$2,133.34 CAD

F-series prostaglandin function as sex pheromones in the Korean salamander, Hynobius leechii
Comparative Biochemistry and Physiology, Part A 61-69
Junho Eom, Young Rim Jung, Daesik Park
2009
Reproductive Function of the Body and Tail Undulations of Hynobius leechii (Amphibia: Hynobiidae): A Quantitative Approach
Ja-Kyeong Kim, Jung-Hyun Lee, Nam-Yong Ra, Heon-Ju Lee, Junho Eom, and Daesik Park
2009
Habitat Use and Home Range of the EndangeredGold-Spotted Pond Frog (Rana chosenica)
Nam-Yong Ra, Ha-Cheol Sung, Seokwan Cheong, Jung-Hyun Lee, Junho Eom and Daesik Park
2008
Male Salamanders Hynobius leechii Respond to Water Vibrations via the Mechanosensory Lateral Line System
Daesik Park, Jung-Hyun Lee, Nam-Yong Ra, and Junho Eom
2008
Population Dynamics of the Long-Tailed Clawed Salamander Larva, Onychodactylus fischeri, and Its Age Structure in Korea
Lee, Jung-Hyun, Nam-Yong Ra, Junho Eom and Daesik Park
2008
Preferred Feeding Sites and Prey of the Adult Gold-spotted Frog, Rana plancyi chosenica
J. Ecol. Field Biol. 30: 357-361
Eom Junho, Jung-Hyun Lee, Nam-Yong Ra and Daesik Park
2007
MORPHOLOGICAL OBSERVATIONS OF ECHINOCHASMUS JAPONICUS CERCARIAE AND THE IN VITRO MAINTENANCE OF ITS LIFE CYCLE FROM CERCARIAE TO ADULTS
Min-Ho Choi, Sae Hoon Kim, Jong-Hoon Chung, Hye-Jin Jang, Joon-Ho Eom, Byung-Suk Chung, Woon-Mok Sohn*,Jong-Yil Chai, and Sung-Tae Hong
2006