Abstract: A microorganism observation device capable of continuously culturing and observing microorganisms is provided. A microorganism observation device includes: a main body including a vessel having a hollow structure and a partition wall provided in the vessel and partitioning an internal space of the vessel into compartments, the vessel having one or more inlets and an outlet each communicating the internal space to an external space, the vessel including a light-transmitting portion having light-transmitting properties at positions of the compartments, and the wall allowing transfer of liquid between the compartments and the inlet and between the compartments and the outlet; a medium filling the compartments; and a plurality of types of microorganisms located in the internal space, in which at least one of the compartments includes two or more of the plurality of types of microorganisms and is free from one or more of the plurality of types of microorganisms.

Abstract: A device for observing microorganisms includes a laminate of a first board and a second board. The second board is provided with a recess, a first groove, and a second groove on a surface facing the first board. The first board or the second board is provided with an inlet hole, an outlet hole, and a reagent feed hole. The recess is connected to the first groove and constitutes a culturing section for culturing microorganisms. The first groove has one end connected to the inlet hole and the other end connected to the outlet hole. The second groove has one end connected to the reagent feed hole and the other end connected to the first groove. At least one of the first board and the second board has light permeability in an observation area corresponding to a part of the first groove.

Abstract: A technology for enabling efficient growing or breed improvement is provided. A predictive model generating system includes a genome-editing apparatus, a growing system, and a processing apparatus. The processing apparatus acquires genome-editing data from the genome-editing apparatus, acquires growth environment data and growth situation data in each growing apparatus from the growing system, generate teaching data from these data, causes a machine-learning model for predicting a growth situation or mutagenesis situation of a living body from the genome mutation and the growth environment or predicting the genome mutation from the growth environment and the growth situation of the living body, to perform learning with the teacher data, and obtains the machine-learning model that has completed the learning as a predictive model.

Abstract: A technology for enhancing ingestion efficiency of algae-eating fish and shellfish is provided. A method of determining feed for algae-eating fish and shellfish includes: feeding algae-eating fish or shellfish with a plurality of samples, the samples each containing algal cells and being different from each other in a stage of growth or division of the algal cells; and selecting, as a feed for giving to the algae-eating fish or shellfish, the algal cells whose stage of growth or division is the same as that of the algal cells contained in the sample most preferably eaten by the algae-eating fish or shellfish.

Abstract: A technique capable of achieving production of a biological material using photosynthetic microorganisms at low cost is provided. A method of producing a biological material includes culturing photosynthetic microorganisms in a culture medium containing dimethyl 2-oxoglutarate while the photosynthetic microorganisms are irradiated with light to cause the photosynthetic microorganisms to proliferate, and then collecting a substance produced by or accumulated in the photosynthetic microorganisms.

Abstract: A technique capable of achieving production of a biological material using photosynthetic microorganisms at low cost is provided. A method of producing a biological material includes culturing a photosynthetic microorganism in a culture medium containing dimethyl 2-oxoglutarate, and then collecting a substance produced by or accumulated in the photosynthetic microorganism.