Environmental surveys to support the farming of the scallop Patinopecten yessoensis in Lake Saroma, Hokkaido × SDGs
In order to achieve sustainable use of fishery resources, we will contribute to the SDGs by understanding the basic production process and the nutrient environment that supports it.
The United Nations has designated the decade starting in 2021 as the "Decade of Ocean Science," with the aim of contributing to SDGs. Ocean science, as defined by the UN, includes the field of fisheries.
· Environmental monitoring has been conducted to estimate the scallopPatinopecten
capacity in Lake Saroma.
· Estimating the amount of food needed
for scallop requires investigating the process of phytoplankton production, which is their main source of food, and the process of
food consumption by various herbivores.
· Understanding the functions
and structures of the ecosystem involved in scallop
farming requires understandings on primary production, chemistry, and
biology; this is the perfect research site for utilizing the skills of our
Sunset at Lake Saroma
· Lake Saroma is a typical area for scallop aquacultures, and approximately 7,000 tons are produced every
· It is also an area
for the production of scallop juveniles to be released into the Okhotsk sea, and the lake supports
approximately 70,000 tons of scallop production
in the open sea.
· Fishermen set up scallop aquaculture allowances and manage the fishing grounds of Lake
Saroma to comprehensively manage and permanently use the fishery
· Our laboratory is conducting
environmental monitoring in collaboration with the Lake Saroma Aquaculture
Fisheries Cooperative since June 2018 to estimate the aquaculture
allowances under the current environmental status.
• Estimation of scallop aquaculture allowance
Determining the food amount required by scallop
· Scallops filter and feed on particulate organic matter
suspended in water such as phytoplankton.
· Farmed scallops，oysters, organisms attached to them such as Mytilus
and Ascidiacea, and zooplankton share similar food sources.
· Estimating the amount of food
that scallops consume requires knowing the amount
of food consumed by other food competitors.