Dr Line Bay
Senior Research Fellow
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Smart State Innovation Fellow, ARC Centre of Excellence for Coral Reef studies James Cook University and Australian Institute of Marine Science (2008 - ). Inaugural Isobel Bennett Marine Biology Fellow (2008) Research Interests
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Research Interests
My research interests span the areas of ecological and evolutionary genetics and genomics in a range of marine organisms including coral reef fishes, mangroves, corals, and their symbiotic communities of bacteria and dinoflagellate algae (zooxanthellae).
My current research focus is on the ecological and evolutionary genetics and genomics of coral symbioses. In particular, I am interested in gene expression variation in natural and stressed coral populations with the view of identifying key genes and pathways associated with coral bleaching. This research further aims to quantify variation in gene expression of reef building corals at a range of scales including within and among genotypes of coral host and zooxanthellae, times of day, and populations.
In collaboration with colleagues and students I use molecular tools to examine the population structure, patterns of connectivity and effective population sizes of zooxanthellae, corals and reef fishes in natural and disturbed systems. This research involves the development of molecular markers to compare populations and/or species with different ecological attributes such as level of temperature tolerance, ecological specialization, dispersal potential, range size, etc.
Research supervision:
David Jones (BSc Hons 2007 – 2008). Effective population sizes in a coral reef fish Pomacentrus amboinensis on the Great Barrier Reef. James Cook University.
Allison Paley (M Sc 2007 – 2009). Genetic diversity, bleaching sensitivity and colour polymorphism of a common reef-building coral, Acropora millepora, from the Great Barrier Reef, Australia. James Cook University.
Rebecca Lawton (PhD 2008 – ). Ecological specialization versus susceptibility to disturbance among coral-feeding butterflyfishes. James Cook University
Emily Howells (PhD 2008 –) Genetic resilience of Symbiodinium populations: the role of coral endosymbionts in reef adaptation to climate change.
My research combines field based experiments and lab investigations to understand gene expression in natural and stressed coral populations (left: coral transplant experiment; right: microarray scan)

A.millepora red morph at Lizard Island
I examine the factors determining population structure at local and regional scales in a range of coral reef organisms.

Pomacentrus ambionensis (left), a benthic spawner and Acanthochromis polyacanthus (right) a brooder both display strong genetic structure at local spatial scales on the GBR.
Publications online
Select Publications
- Jones DB, Jerry DR, McCormick MI, and Bay LK (Accepted) Development of nine microsatellite markers for Pomacentrus amboinensis. Molecular Ecology Resources.
- Bay LK, Crozier YC, Crozier RH (2007) Isolation and characterisation of eight microsatellite loci in the mangrove mud-nesting ant Polyrhachis sokolova. Molecular Ecology Notes 7: 1239 – link to journal article
- Munkres KP, Bay LK, Jerry DR, McCormick MI, van Herwerden L (2007). Development and characterisation of microsatellite markers for parentage analysis of the coral reef fish Pomacentrus amboinensis (Pomacentridae). Conservation Genetics 8: 987 – 990. link to journal article
- Bay LK, Crozier RH and Caley MJ (2006). The relationship between genetic structure and pelagic larval duration in coral reef fishes on the Great Barrier Reef. Marine Biology 149: 1247-1256.. link to journal article
- Bay LK, Buechler K, Gagliano M and Caley MJ (2006). Intraspecific variation in the pelagic larval duration of tropical reef fishes. J Fish Biol 68: 1206-1214. link to journal article
- Bay LK, Choat JH, van Herwerden L and Robertson DR (2004). High genetic diversities and complex genetic structure in an Indo-Pacific tropical reef fish (Chlorurus sordidus) evidence of an unstable evolutionary past? Marine Biology 14: 4757-768.
- Bay LK, Jones GP and McCormick MI (2001). Habitat selection and aggression as determinants of spatial segregation among damselfishes on coral reefs. Coral Reefs 20: 289 – 298.
- Bay LK, Caley MJ and Crozier RH (In Review) Metapopulation structure in a coral reef fish demonstrated by genetic data on patterns of migration, extinction and re-colonisation. BMC Evolutionary Biology Submitted March 2008



