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Aquaculture Biology Lab
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The lab explores the diversity of fishes and algae through fieldwork and genomics.
AboutAbout the lab
Exploring fish and algal diversity through fieldwork and genomics
The Aquaculture Biology Lab studies aquatic biodiversity science for fishes and algae, combining field science with advanced techniques from genomics, genetics, and the life sciences.
The lab clarifies the ecology and genetic characteristics of aquatic animals and plants, and investigates the mechanisms by which their diversity arises, is maintained, and changes.
The lab has an unusual structure in which ichthyology and phycology have been handled within the same lab.
For research on fishes and algae, the lab can accept undergraduates, graduate students, and postdocs; it does not accept students for Japanese eel research because that work is commissioned research.
Key terms
- Ecological genomics
- A research approach that combines field study of ecology with analysis of the genome (the full set of genetic information)
- Speciation
- The process by which a single species splits and becomes separate species
- Phenotype
- Characteristics of an organism that can be observed from the outside, such as body shape, color, and behavior
NewsLab news
Paper by Prof. Kokita and colleagues published in Ecology and Evolution
Paper by Prof. Kokita and colleagues published in Molecular Ecology
Paper by Prof. Kokita and colleagues published in Ichthyological Research
ResearchResearch themes
The lab investigates how the diversity of fishes and algae, the animals and plants of aquatic environments, arises, is maintained, and changes. It conducts research on ecological genomics and evolutionary behavioral ecology for fishes, and on systematics and conservation biology for algae.
*Illustrative imageDiversification of reproductive behavior in fishes
Reproductive behavior strategies differ greatly even among closely related species and populations. Using sticklebacks (Gasterosteidae) and filefishes (Monacanthidae) as subjects, the lab combines behavioral ecology observations with methods from behavioral endocrinology and evolutionary genetics to investigate the mechanisms of diversification.
*Illustrative imageOrigins of diversity in shallow-water fishes
Using ecological genomics approaches, the lab investigates why shallow-water areas host so many species and the processes by which that diversity arises. The subjects are population differentiation in anemonefish and the sapphire damselfish (Pomacentrus coelestis), species diversification in anemonefishes, and speciation in three species of Sebastes rockfish.
*Illustrative imageMechanisms of phenotypic adaptation in fishes
The lab investigates the mechanisms behind the adaptive evolution of diverse phenotypes seen in wild fishes, from both ecological and genetic perspectives. It studies color polymorphism in the countershading of Sarcocheilichthys gudgeons in Lake Biwa, and the diversity of female egg shape and ovipositor length in bitterlings.
*Illustrative imagePopulation maintenance of a large freshwater red alga
For the rare freshwater red alga Thorea okadae, the lab investigates the management of environments suited to maintaining its populations, and the actual state of its genetic diversity. Using a river on the Ito Campus as a model, it measures the relationship between growth and habitat conditions such as the light environment.
MembersFaculty
The members of the Aquaculture Biology Lab consist of faculty, doctoral, master's, and undergraduate students, and students granted access to the lab.As of 2024
- ProfessorTomoyuki Kokita
- Assistant ProfessorAkira Kurihara
- Assistant ProfessorTappei Mishina
- Project ProfessorNoritaka Mochioka
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Marine algae in Gullmarsfjorden at Sämstad 4” W.carter / CC0 (cropped)
- Diversification of reproductive behavior in fishes: “Astronotus ocellatus” Jón Helgi Jónsson (Amything) / CC BY-SA 3.0 (cropped)
- Origins of diversity in shallow-water fishes: “Fish and coral in Tumon Bay Marine Preserve, Guam” Curt Storlazzi, USGS Pacific Coastal and Marine Science Center / Public domain (cropped)
- Mechanisms of phenotypic adaptation in fishes: “Preserved Tripletail Black Grunt Fish Specimen” Aliva Sahoo / CC BY-SA 4.0 (cropped)
- Population maintenance of a large freshwater red alga: “Greenish-colored Cyanidium caldarium red algae in South Fork of Tantalus Creek near Porkchop Geyser (10 August 2011) 3” James St. John / CC BY 2.0 (cropped)
- Related lab (Entomology Lab): “Collection drawer - Bohart Museum of Entomology - University of California, Davis - DSC03332” Daderot / CC0 (cropped)
- Related lab (Aqua Field Science Lab): “Erizo de mar violáceo (Sphaerechinus granularis), Madeira, Portugal, , DD 40” Diego Delso / CC BY-SA 4.0 (cropped)
- Related lab (Zoology Lab): “IVF laboratory” Galina Fomina / CC BY 4.0 (cropped)
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