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Flatfish metamorphosis
Developmental biology is the study of growth, development, regeneration, sexual and asexual reproduction, metamorphosis, and the growth and differentiation of stem cells in the adult organism. Such studies used to be carried out by using morphological, anatomical, and microscopic approaches, and the scope of understanding was mostly limited to answering what happens with each of these processes. The advances in molecular biology, especially the emergence and advances of genomic sciences in the last 30 years have revolutionized the levels of understanding: From understanding what happened, to understanding why things happened the way they did and how things happen, allowing the understanding of the sequence of events and the mechanisms of events. It is these advances that made it possible to publish the book Flatfish Metamorphosis by Dr. Baolong Bao published by Springer Nature Press.
Flatfish are members of the order Pleuronectiformes. Many flatfish species are important fish food such as flounders, soles, turbot, plaice, and halibut. Not only they are important as nutritious seafood, so are they for the study of developmental biology. In many flatfish species, both eyes lie on one side of the head, one or the other migrating through or around the head during development. Associated with the eye migration are cranial deformation, cranial asymmetry, changes in body swim-posture, lateralized behavior, dorsal fin development, elongation and regression of dorsal fin, left/right asymmetrical pigmentation, body depth changes, among other developmental changes. These developmental changes and processes offer excellent research models for the understanding of development, growth, and metamorphosis.
Dr. Bao’s laboratory produced a large body of knowledge and data, from photographs and drawings to morphological and performance data, from molecular markers and sequence information to genome expression and gene pathways, and from genomic basis to sequence of events leading to such fascinating metamorphosis processes.
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