Mr Meng-Han (Joseph) Chung

Postdoctoral Research Fellow
ANU College of Science

Areas of expertise

  • Behavioural Ecology 310301
  • Ecological Physiology 310303
  • Evolutionary Ecology 310405
  • Life Histories 310408

Research interests

My research primarily focuses on fish, including:

(1) Short-term reproductive plasticity

  • Can males increase their sperm production when more females are present in their vicinity?
  • Can males control the timing of sperm release using their intermittent organ?
  • Do animals modify their nest design (location, structure, material) and nest-building behaviors based on ambient conditions such as water velocity?

(2) Long-term reproductive costs

  • Do mated individuals experience accelerated aging and reduced lifespan compared to virgins?
  • Which reproductive components are more costly for males: mating behaviors (courtship, male-male fights) or gamete production (ejaculation, sperm traits)? 

(3) Effects of environmental stress on life-history trajectory

  • How do freshwater fish adjust their life-history strategies when living in a salinized aquatic environment?
  • When adaptive plasticity relies on stable environmental cues, how do animals adjust their growth, body condition, and reproductive investments in response to fluctuating environmental conditions such as salinity?
  • Does reduced food availability impact an individual's ability to cope with other environmental stresses, such as high temperatures?


I am a behavioral ecologist and ecophysiologist specializing in studying the plasticity of reproductive behavior and life-history strategies in animals in response to a changing world, encompassing both social contexts and physical environments. I completed my PhD at the Australian National University in 2023, investigating the short-term plasticity and long-term costs of male reproduction and the effects of early-life environment stress on subsequent adult behaviour, growth, reproductive output and lifespan. During my doctoral studies, I received support from the Australian Government Research Training Program International Scholarship, the Fee-Offset Scholarship, and a Taiwanese Government Scholarship to Study Abroad.

Currently, I hold a postdoctoral research position at ANU, where I collaborate with Prof. Michael Jennions and Dr. Megan Head.

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Updated:  19 April 2024 / Responsible Officer:  Director (Research Services Division) / Page Contact:  Researchers