Mariko YOSHIDA（Hiroshima University/The Australian National University）

□日時　2021年6月21日（月）18：15〜
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□発表言語：英語

□要旨
　Oyster culture forms a landscape of risks, marked by the escalating rise in intense ecological upheaval and social precariousness. These risks are exemplified as everyday encounters with and responses to unforeseen impacts caused by climate crisis on oyster larval mortality, depopulation and aging in the fisheries sector, as well as continuity and change in seafood consumption. As such, the simultaneous proliferation of these risks has given rise to new uncertainties including: ocean modeling based on climate scenarios; biotechnologies that achieve optimization for cost efficiency and high value-added products; and techno-scientific innovations in seafood safety. In my dissertation, I tackle the knowledge practices incorporated into the modes of production, circulation, and consumption of the Pacific oyster, a species endemic from Japan that presently accounts for 80% of the total world production of edible oysters. Attentive to the temporalities, materialities, and relationalities of human-nonhuman-environment interactions, I grapple with the contingent practices and multifarious ways of interspecies entanglement that constitute contemporary Japanese aquaculture. I examine how these unevenly distributed risks have been dealt with by various epistemic communities including oyster producers, marine biologists, market authorities, biotechnological venture, and how values and meanings of contemporary Japanese aquaculture have been reformulated in its trajectory of environmental and sociopolitical uncertainty.